1 % (c) The GRASP/AQUA Project, Glasgow University, 1992-1997
4 This is the driver script for the Glasgow Haskell compilation system.
5 It is written in \tr{perl}. The first section includes a long
6 ``usage'' message that describes how the driver is supposed to work.
8 %************************************************************************
10 \section[Driver-usage]{Usage message}
12 %************************************************************************
15 ($Pgm = $0) =~ s|.*/||;
16 $ShortUsage = "\nUsage: For basic information, try the `-help' option.\n";
17 $LongUsage = "\n" . <<EOUSAGE;
18 Use of the Glorious Haskell Compilation System driver:
20 $Pgm [command-line-options-and-input-files]
22 ------------------------------------------------------------------------
23 This driver ($Pgm) guides each input file through (some of the)
24 possible phases of a compilation:
26 - unlit: extract code from a "literate program"
27 - hscpp: run code through the C pre-processor (if -cpp flag given)
28 - hsc: run the Haskell compiler proper
29 - gcc: run the C compiler (if compiling via C)
30 - as: run the assembler
33 For each input file, the phase to START with is determined by the
35 - .lhs literate Haskell: unlit
36 - .hs illiterate Haskell: hsc
37 - .hc C from the Haskell compiler: gcc
38 - .c C not from the Haskell compiler: gcc
39 - .s assembly language: as
40 - other passed directly to the linker: ld
42 If no files are given on the command line, input is taken from
43 standard input, and processing is as for an .hs file. (All output is
44 to stdout or stderr, however).
46 The phase at which to STOP processing is determined by a command-line
48 -E stop after generating preprocessed, de-litted Haskell (used in conjunction with -cpp)
49 -C stop after generating C (.hc output)
50 -S stop after generating assembler (.s output)
51 -c stop after generating object files (.o output)
53 Other commonly-used options are:
55 -O An `optimising' package of compiler flags, for faster code
57 -prof Compile for cost-centre profiling
58 (add -auto for automagic cost-centres on top-level functions)
60 -fglasgow-exts Allow Glasgow extensions (unboxed types, etc.)
62 -H14m Increase compiler's heap size
64 -M Output the Makefile rules recording the
65 dependencies of a list of Haskell files.
66 (ghc driver script calls upon the help of a
67 compatible mkdependHS script to do the actual
70 The User's Guide has more information about GHC's *many* options.
72 Given the above, here are some TYPICAL invocations of $Pgm:
74 # compile a Haskell module to a .o file, optimising:
76 # link three .o files into an executable called "test":
77 % $Pgm -o test Foo.o Bar.o Baz.o
78 # compile a Haskell module to C (a .hc file), using a bigger heap:
79 % $Pgm -C -H16m Foo.hs
80 # compile Haskell-produced C (.hc) to assembly language:
82 ------------------------------------------------------------------------
86 %************************************************************************
88 \section[Driver-init]{Initialisation}
90 %************************************************************************
92 The driver script need to be told where to find these executables, so
93 in the course of building the driver `executable', make-variables holding
94 these are prepended to the de-litted version of this file. The variables are:
99 HOSTPLATFORM TARGETPLATFORM
101 ProjectName ProjectVersion ProjectVersionInt ProjectPatchLevel
103 HscMajorVersion HscMinorVersion CcMajorVersion CcMinorVersion
107 bindir libdir libexecdir datadir
111 GHC_LIB_DIR GHC_RUNTIME_DIR GHC_UTILS_DIR GHC_INCLUDE_DIR
113 GHC_OPT_HILEV_ASM GhcWithNativeCodeGen
115 GHC_UNLIT GHC_HSCPP GHC_HSC GHC_SYSMAN
119 WAY_*_NAME WAY_*_HC_OPTS
125 Establish what executables to run for the various phases, what the
126 default options are for those phases, and other similar boring stuff.
129 select(STDERR); $| = 1; select(STDOUT); # no STDERR buffering, please.
131 $TargetPlatform = $TARGETPLATFORM;
133 $TopPwd = "${TOP_PWD}";
134 $InstBinDirGhc = "${bindir}";
135 $InstLibDirGhc = "${libdir}";
137 # Normally the same as InstLibDirGhc, but we accommodate
138 # for it being separate.
140 $InstLibExecDirGhc = "${libexecdir}";
141 $InstDataDirGhc = "${datadir}";
143 $Status = 0; # just used for exit() status
146 # set up signal handler
147 sub quit_upon_signal { &tidy_up_and_die(1, ''); }
148 $SIG{'INT'} = 'quit_upon_signal';
149 $SIG{'QUIT'} = 'quit_upon_signal';
151 # where to get "require"d .prl files at runtime (poor man's dynamic loading)
152 # (use LIB, not DATA, because we can't be sure of arch-independence)
153 @INC = ( ( $INSTALLING ) ? $InstLibDirGhc
154 : "$TopPwd/${CURRENT_DIR}" );
156 if ( $ENV{'TMPDIR'} ) { # where to make tmp file names
157 $Tmp_prefix = ($ENV{'TMPDIR'} . "/ghc$$");
159 print STDERR "TMPDIR has not been set to anything useful!\n" if (${TMPDIR} eq '');
160 $Tmp_prefix ="${TMPDIR}/ghc$$"; # TMPDIR set via Makefile when booting..
161 $ENV{'TMPDIR'} = ${TMPDIR}; # set the env var as well
164 # Some shells run into real trouble when command line and environment
165 # gets big (e.g., cmd lines of >4K to /bin/sh causes havoc on our
166 # Solaris-2.5.1 boxes - even though sysconf(_SC_ARG_MAX) reports 1M ...).
167 # To work around any such */bin/sh* problems, we will scribble such
168 # awfully long command lines into a temp file and exec that temp file
169 # with $(REAL_SHELL) (don't use the SHELL variable directly as this
170 # will normally get you the wrong thing when the driver is invoked
171 # from within `make'). If the REAL_SHELL variable isn't set, you'll
172 # get SHELL. This is all a terrible hack. (in case you hadn't reached
173 # the same conclusion by now :-)
177 if ( ! $ENV{'REAL_SHELL'} ) {
178 $ENV{'REAL_SHELL'} = $ENV{'SHELL'};
181 @Files_to_tidy = (); # files we nuke in the case of abnormal termination
183 $Unlit = ( $INSTALLING ) ? "$InstLibExecDirGhc/unlit"
184 : "$TopPwd/${CURRENT_DIR}/${GHC_UNLIT}";
188 $Diff = $CONTEXT_DIFF;
193 $HsCpp = # but this is re-set to "cat" (after options) if -cpp not seen
194 ( $INSTALLING ) ? "$InstLibExecDirGhc/hscpp"
195 : "$TopPwd/${CURRENT_DIR}/${GHC_HSCPP}";
198 $HsC = ( $INSTALLING ) ? "$InstLibExecDirGhc/hsc"
199 : "$TopPwd/${CURRENT_DIR}/${GHC_HSC}";
201 # For PVM fiends only
202 $SysMan = ( $INSTALLING ) ? "$InstLibExecDirGhc/SysMan"
203 : "$TopPwd/${CURRENT_DIR}/${GHC_SYSMAN}";
208 # HsC_rts_flags: if we want to talk to the LML runtime system
209 # NB: we don't use powers-of-2 sizes, because this may do
210 # terrible things to cache behavior.
212 $Specific_heap_size = 6 * 1000 * 1000;
213 $Specific_stk_size = 1000 * 1000;
214 $Scale_sizes_by = 1.0;
218 The variables set by @setupOptFlags@ represent parts of the
219 -O/-O2/etc ``templates,'' which are filled in later, using these.
220 These are the default values, which may be changed by user flags.
224 $Oopt_MaxSimplifierIterations = '-fmax-simplifier-iterations4';
225 $Oopt_PedanticBottoms = '-fpedantic-bottoms'; # ON by default
226 $Oopt_MonadEtaExpansion = '';
227 $Oopt_FinalStgProfilingMassage = '';
229 $Oopt_DoSpecialise = '-fspecialise';
230 $Oopt_FoldrBuild = 0; # *Off* by default!
231 $Oopt_FB_Support = ''; # was '-fdo-arity-expand';
232 # $Oopt_FoldrBuildWW = 0; # Off by default
233 $Oopt_FoldrBuildInline = ''; # was '-fdo-inline-foldr-build';
234 $Oopt_ShowSimplifierProgress = '';
235 } # end of setupOptFlags
237 # Assign defaults to these right away.
241 Things to do with C compilers/etc:
243 (added -Wimplicit: implicit prototypes cause very hard-to-find
244 problems, so I'm turing on the warnings -- SDM 4/5/98)
247 $CcRegd = $GHC_OPT_HILEV_ASM;
248 @CcBoth_flags = ('-S','-Wimplicit'); # flags for *any* C compilation
252 # those for all files,
253 # those only for .c files;
254 # those only for .hc files
257 @CcRegd_flags_c = ();
258 @CcRegd_flags_hc = ();
260 $As = ''; # "assembler" is normally GCC
263 $Lnkr = ''; # "linker" is normally GCC
266 # 'nm' is used for consistency checking (ToDo: mk-world-ify)
267 # ToDo: check the OS or something ("alpha" is surely not the crucial question)
268 $Nm = ($TargetPlatform =~ /^alpha-/) ? 'nm -B' : 'nm';
271 Warning packages that are controlled by -W and -Wall. The 'standard'
272 warnings that you get all the time are
274 -fwarn-overlapping-patterns
275 -fwarn-missing-methods
276 -fwarn-duplicate-exports
278 these are turned off by -Wnot.
281 @StandardWarnings = ('-fwarn-overlapping-patterns',
282 '-fwarn-missing-methods',
283 '-fwarn-duplicate-exports');
284 @MinusWOpts = (@StandardWarnings,
285 '-fwarn-incomplete-patterns',
286 '-fwarn-unused-binds',
287 '-fwarn-unused-imports');
288 @MinusWallOpts = (@MinusWOpts,
289 '-fwarn-unused-matches',
290 '-fwarn-type-defaults',
291 '-fwarn-name-shadowing',
292 '-fwarn-missing-signatures');
295 What options \tr{-user-setup-a} turn into (user-defined ``packages''
297 of options). Note that a particular user-setup implies a particular
298 Prelude ({\em including} its interface file(s)).
300 $BuildTag = ''; # default is sequential build w/ Appel-style GC
302 %BuildDescr = (# system ways begin
303 '', 'normal sequential',
307 '_mp', "$WAY_mp_NAME",
308 '_mg', "$WAY_mg_NAME",
326 '_B', "$WAY_B_NAME" );
328 # these are options that are "fed back" through the option processing loop
332 '_a', "$WAY_a_HC_OPTS",
333 '_b', "$WAY_b_HC_OPTS",
334 '_c', "$WAY_c_HC_OPTS",
335 '_d', "$WAY_d_HC_OPTS",
336 '_e', "$WAY_e_HC_OPTS",
337 '_f', "$WAY_f_HC_OPTS",
338 '_g', "$WAY_g_HC_OPTS",
339 '_h', "$WAY_h_HC_OPTS",
340 '_i', "$WAY_i_HC_OPTS",
341 '_j', "$WAY_j_HC_OPTS",
342 '_k', "$WAY_k_HC_OPTS",
343 '_l', "$WAY_l_HC_OPTS",
344 '_m', "$WAY_m_HC_OPTS",
345 '_n', "$WAY_n_HC_OPTS",
346 '_o', "$WAY_o_HC_OPTS",
347 '_A', "$WAY_A_HC_OPTS",
348 '_B', "$WAY_B_HC_OPTS",
351 '_p', "$WAY_p_HC_OPTS",
352 '_t', "$WAY_t_HC_OPTS",
353 '_u', "$WAY_u_HC_OPTS",
354 '_mp', "$WAY_mp_HC_OPTS",
355 '_mg', "$WAY_mg_HC_OPTS");
359 Import/include directories (\tr{-I} options) are sufficiently weird to
360 require special handling.
363 @Import_dir = ('.'); #-i things
364 @Include_dir = ('.'); #-I things; other default(s) stuck on AFTER option processing
366 # where to look for interface files (system hi's, i.e., prelude and syslibs)
367 @SysImport_dir = ( $INSTALLING )
368 ? ( "$InstLibDirGhc/imports/std" )
369 : ( "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/std" );
371 # We need to look in ghc/ and glaExts/ when searching for implicitly needed .hi files, but
372 # we should really *not* look there for explicitly imported modules.
374 $Haskell1Version = 5; # i.e., Haskell 1.4
377 # Cpp symbols defined when we're processing Haskell source.
380 ( "-D__HASKELL1__=$Haskell1Version"
381 , "-D__GLASGOW_HASKELL__=$ProjectVersionInt"
383 , "-D__CONCURRENT_HASKELL__"
386 @UserLibrary_dir= (); #-L things;...
387 @UserLibrary = (); #-l things asked for by the user
389 @SysLibrary_dir = ( ( $INSTALLING ) #-syslib things supplied by the system
391 : ( "$TopPwd/$CURRENT_DIR/$GHC_RUNTIME_DIR"
392 , "$TopPwd/$CURRENT_DIR/$GHC_RUNTIME_DIR/gmp"
393 , "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/std"
394 , "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/std/cbits"
397 @SysLibrary = (); # will be built up as we go along
399 $TopClosureFile # defaults to 1.2 one; will be mangled later
401 # ( $INSTALLING) ? "$InstLibDirGhc/TopClosureXXXX.o"
402 # : "$TopPwd/$CURRENT_DIR/$GHC_RUNTIME_DIR/main/TopClosureXXXX.o";
404 # make depend for Haskell
406 = ( $INSTALLING ) ? "$InstLibExecDirGhc/mkdependHS"
407 : "$TopPwd/$CURRENT_DIR/$GHC_UTILS_DIR/mkdependHS/mkdependHS";
409 @MkDependHS_flags = ();
411 # do_link flag should not be reset while rescanning the cmd-line.
413 $Specific_output_dir = ''; # set by -odir <dir>
414 $Specific_output_file = ''; # set by -o <file>; "-" for stdout
417 Function to initialise the per-compilation-unit globals that
418 are used to guide and control the invocation of the different phases.
421 sub initDriverGlobals {
423 # reset the following options:
424 # RTS flags to use while compiling
426 @HsP_flags = (); # these are the flags destined solely for
427 # the flex/yacc parser
432 The optimisations/etc to be done by the compiler are {\em normally}
433 expressed with a \tr{-O} (or \tr{-O2}) flag, or by its absence.
436 $OptLevel = 0; # no -O == 0; -O == 1; -O2 == 2; -Ofile == 3
437 $MinusO2ForC = 0; # set to 1 if -O2 should be given to C compiler
438 $StolenX86Regs = 4; # **HACK*** of the very worst sort
442 @Import_dir = ('.'); #-i things
443 @Include_dir = ('.'); #-I things; other default(s) stuck on AFTER option processing
448 We are given a list of files with various presumably-known suffixes
449 (unknown-suffix files go straight to the linker). For each file, we
450 begin by assuming that we'll run every phase over it. However: (1)
451 global flags (\tr{-c}, \tr{-S}, etc.) tell us not to run any phase
452 past a certain point; and (2) the file's suffix tells us what phase to
453 start with. Linking is weird and kept track of separately.
455 Here are the initial defaults applied to all files:
457 $Cpp_flag_set = 0; # (hack)
458 $Only_preprocess_C = 0; # pretty hackish
459 $Only_preprocess_hc = 0; # ditto
460 $Only_generate_deps = 0; # "
461 $PostprocessCcOutput = 0;
464 # static /= 0 => produce code for DLLs (when compiling/linking.)
466 $Static = 0 if ($TargetPlatform =~ /-mingw32$/);
468 # native code-gen or via C?
469 $HaveNativeCodeGen = $GhcWithNativeCodeGen;
470 $HscOut = '-C='; # '-C=' ==> .hc output; '-S=' ==> .s output; '-N=' ==> neither
472 if $HaveNativeCodeGen && $TargetPlatform =~ /^(alpha)-/;
473 # TEMP: disable x86 & Sparc if $HaveNativeCodeGen && $TargetPlatform =~ /^(i386|alpha|sparc)-/;
474 $ProduceHi = '-hifile=';
480 $CollectingGCstats = 0;
481 $CollectGhcTimings = 0;
482 $DEBUGging = ''; # -DDEBUG and all that it entails (um... not really)
483 $PROFing = ''; # set to p or e if profiling
484 $PROFgroup = ''; # set to group if an explicit -Ggroup specified
485 $PROFauto = ''; # set to relevant hsc flag if -auto or -auto-all
486 $PROFcaf = ''; # set to relevant hsc flag if -caf-all
487 $PROFdict = ''; # set to relevant hsc flag if -auto-dicts
488 $PROFignore_scc = ''; # set to relevant parser flag if explicit sccs ignored
489 $UNPROFscc_auto = ''; # set to relevant hsc flag if forcing auto sccs without profiling
490 $TICKYing = ''; # set to t if compiling for ticky-ticky profiling
491 $PARing = ''; # set to p if compiling for PAR
492 $GRANing = ''; # set to g if compiling for GRAN
493 $Specific_hi_file = ''; # set by -ohi <file>; "-" for stdout
494 $Specific_dump_file = ''; # set by -odump <file>; "-" for stdout
495 $Using_dump_file = 0;
497 $Osuffix = ''; # default: use the normal suffix for that kind of output
499 $HiSuffix_prelude = '';
500 $Do_recomp_chkr = 0; # don't use the recompilatio checker unless asked
501 $Do_cc = -1; # a MAGIC indeterminate value; will be set to 1 or 0.
504 $Keep_hc_file_too = 0;
505 $Keep_s_file_too = 0;
506 $UseGhcInternals = 0; # if 1, may use GHC* modules
508 $DoAsmMangling = 1; # on by default, off by -fno-asm-mangling
510 $Dump_parser_output = 0;
512 $Dump_asm_splitting_info = 0;
513 $NoImplicitPrelude = 0;
514 # 1 => don't tell the linker to hoist in PrelMain.Main, as an
515 # external main is provided instead.
518 } # end of initDriverGlobals (Sigh)
520 # we split the argv passed to the driver into three:
525 # and files to be linked...
531 # cmd line options prefixing the unit we're compiling
536 We inject consistency-checking information into \tr{.hc} files (both
537 when created by the Haskell compiler and when compiled by the C
538 compiler), so that we can check that an executable is made from
539 consistently-built pieces. (The check is normally done just after
540 linking.) The checking is done by introducing/munging
541 \tr{what(1)}-style strings. Anyway, here are the relevant global
542 variables and their defaults:
544 $LinkChk = 0; # set to 0 if the link check should *not* be done
546 # major & minor version numbers; major numbers must always agree;
547 # minor disagreements yield a warning.
548 $HsC_major_version = $HscMajorVersion;
549 $HsC_minor_version = $HscMinorVersion;
550 $Cc_major_version = $CcMajorVersion;
551 $Cc_minor_version = $CcMinorVersion;
553 # options: these must always agree
554 $HsC_consist_options = ''; # we record, in this order:
555 # Build tag; debugging?
556 $Cc_consist_options = ''; # we record, in this order:
557 # Build tag; debugging?
560 %************************************************************************
562 \section[Driver-parse-argv]{Munge the command-line options}
564 %************************************************************************
566 Now slurp through the arguments.
569 &initDriverGlobals();
570 &splitCmdLine(@ARGV);
571 # Run through the cmd-line first time.
572 &processArgs(@Cmd_opts);
574 # Check to see if driver is only in the business
575 # to generate dependencies
576 if ( $Status == 0 && $Only_generate_deps ) {
578 push (@MkDependHS_flags, "-o$Osuffix") if $Osuffix;
579 push (@MkDependHS_flags, "-s$BuildTag") if $BuildTag;
580 # They're not (currently) needed, but we need to quote any -#include options
581 foreach (@Cmd_opts) {
582 s/-#include.*$/'$&'/g;
584 local($to_do) = "$MkDependHS @MkDependHS_flags @HsSourceCppOpts -- @Cmd_opts -- @Input_file" ;
585 &run_something($to_do, 'Haskell dependencies');
589 # if there are several input files,
590 # we don't allow \tr{-o <file>} or \tr{-ohi <file>} options...
591 # (except if linking, of course)
593 if ($#Input_file > 0 && ( ! $Do_lnkr )) {
594 if ( ($Specific_output_file ne '' && $Specific_output_file ne '-')
595 || ($Specific_hi_file ne '' && $Specific_hi_file ne '-') ) {
596 print STDERR "$Pgm: You can't use -o or -ohi options if you have multiple input files.\n";
597 print STDERR "\tPerhaps the -odir option will do what you want.\n";
602 # check for various pathological -o and -odir combinations...
603 if ($Specific_output_dir ne '' && $Specific_output_file ne '') {
604 if ($Specific_output_file eq '-') {
605 print STDERR "$Pgm: can't set output directory with -ohi AND have output to stdout\n";
607 } else { # amalgamate...
608 $Specific_output_file = "$Specific_output_dir/$Specific_output_file";
609 # ToDo: check we haven't got a junk name now...
610 $Specific_output_dir = ''; # reset
614 # crash and burn if there were errors
616 print STDERR $ShortUsage;
621 %************************************************************************
623 \section[Driver-post-argv-mangling]{Setup after reading options}
625 %************************************************************************
627 %************************************************************************
629 \subsection{Set up for optimisation level (\tr{-O} or whatever)}
631 %************************************************************************
633 We come now to the default ``wads of options'' that are turned on by
634 \tr{-O0} (do min optimisation), \tr{-O} (ordinary optimisation),
635 \tr{-O2} (aggressive optimisation), or no O-ish flag (compile speed is
638 The user can also specify his/her own list of options in a file; in
639 that case, the work is already done (see stuff about @minusO3@,
642 GHC allows very precise control of what happens during a compilation.
643 Core-to-Core and STG-to-STG passes can be run in any order, as many
644 times as you like. Individual transformations can be turned on or
647 Sadly, however, there are some interdependencies \& Things You Must
648 Not Do. Here is the list.
652 \item[\tr{-fspecialise}:]
653 The specialiser must have dependency-analysed input; but if you run
654 the simplifier to do this, you must not let it toss away unused
655 bindings! (The typechecker conveys some specialisation info via
656 ``unused'' bindings...)
658 \item[\tr{-ffloat-inwards}:]
659 Floating inwards should be done before strictness analysis, because
660 the latter will give better results.
662 \item[\tr{-fstatic-args}:]
663 The static-arguments-transformation pass {\em must} have the
664 simplifier run right after it.
666 \item[\tr{-fcalc-inlinings[12]}:]
667 Not required, but there may be slight gains by re-simplifying after
668 this is done. (You could then \tr{-fcalc-inlinings} again, just for
671 \item[\tr{-ffull-laziness}:]
672 The (outwards-)let-floater should be the {\em last} Core-to-Core pass
673 that's run. (Um, well, howzabout the simplifier just once more...)
678 \item[\tr{-fupdate-analysis}:]
679 It really really wants to be the last STG-to-STG pass that is run.
684 sub setupOptimiseFlags {
690 '-ffloat-lets-exposing-whnf',
691 '-ffloat-primops-ok',
694 # '-fdo-lambda-eta-expansion', # too complicated
696 # '-flet-to-case', # no strictness analysis, so...
697 $Oopt_PedanticBottoms,
698 # $Oopt_MonadEtaExpansion, # no thanks
700 # These two work fine, if you really want no simplification at all,
701 # for bizarre test reasons. But you get really terrible code if you use them,
702 # for example: let x = e in x
703 # with dozens of redundant thunks etc. So I'm leaving them out.
705 # '-fsimpl-uf-use-threshold0',
706 # '-fessential-unfoldings-only',
709 # The presence of -fclone-binds is *temporary* to work around
710 # the fact that the desugarer in 3.0{2.3} does generate
711 # bindings with identical ids, and the type checker doesn't perform
712 # properly cloned type substitutions. Instead, we make sure that all
713 # binders are cloned first time through the simplifier.
715 # Will be properly fixed in the `new compiler` I hear, at which point
716 # the cloning can be turned off here.
721 $Oopt_MaxSimplifierIterations,
722 $Oopt_ShowSimplifierProgress,
725 # '-ffull-laziness', # removed 95/04 WDP following Andr\'e's lead
727 $Oopt_FinalStgProfilingMassage
730 @HsC_minusO_flags # NOTE: used for *both* -O and -O2 (some conditional bits)
732 '-fdo-eta-reduction',
734 # initial simplify: mk specialiser happy: minimum effort please
738 '-fkeep-spec-pragma-ids', # required before specialisation
740 # I don't understand why we want -fessential-unfoldings-only here
741 # If we have it, the following nasty thing happens:
745 # where "*" means exported.
746 # In the essential-unfoldings pass we still substitute f for g
747 # but we don't substitute E for f first. So we get
751 # The g=f will get reverse-substituted later, but it's untidy. --SLPJ
753 # SDM: Here's why it's necessary.
755 # If we unfold in the first pass before the specialiser is run
756 # we miss opportunities for specialisation because eg. wrappers
757 # have been inlined for specialisable functions.
759 # This shows up in PrelArr.lhs - the specialised instance for newArray
760 # calls the generic rangeSize, because rangeSize is strict and is
761 # replaced by its wrapper by the simplifier.
763 '-fessential-unfoldings-only',
764 '-fsimpl-uf-use-threshold0',
766 # See remark re: cloning in defn of minusnotO
770 '-fmax-simplifier-iterations1',
771 $Oopt_PedanticBottoms,
774 ($Oopt_DoSpecialise) ? (
778 '-fsimplify', # need dependency anal after specialiser ...
779 '[', # need tossing before calc-inlinings ...
781 '-ffloat-lets-exposing-whnf',
782 '-ffloat-primops-ok',
786 # '-fdo-eta-reduction',
787 '-fdo-lambda-eta-expansion',
789 $Oopt_PedanticBottoms,
790 $Oopt_MonadEtaExpansion,
791 $Oopt_MaxSimplifierIterations,
792 $Oopt_ShowSimplifierProgress,
794 # The presence of -fclone-binds is *crucial* here as
795 # -ffull-laziness (which we're about to do next) floats
796 # bindings outwards, so we better make sure that this
797 # doesn't result in the floating out of bindings
798 # with identical uniques, i.e., -ffull-laziness needs
799 # to be preceeded by a simplifier pass with -fclone-binds
804 # ($Oopt_FoldrBuildWW) ? (
805 # '-ffoldr-build-ww-anal',
806 # '-ffoldr-build-worker-wrapper',
810 # '-ffloat-lets-exposing-whnf',
811 # '-ffloat-primops-ok',
815 # '-fdo-eta-reduction',
816 # '-fdo-lambda-eta-expansion',
818 # $Oopt_PedanticBottoms,
819 # $Oopt_MonadEtaExpansion,
820 # $Oopt_MaxSimplifierIterations,
821 # $Oopt_ShowSimplifierProgress,
825 # this pass-ordering sequence was agreed by Simon and Andr\'e
826 # (WDP 94/07, 94/11).
829 ($Oopt_FoldrBuild) ? (
830 '-ffoldr-build-on', # desugar list comprehensions for foldr/build
834 '-fignore-inline-pragma', # **** NB!
835 '-fdo-foldr-build', # NB
837 '-ffloat-lets-exposing-whnf',
838 '-ffloat-primops-ok',
842 # '-fdo-eta-reduction',
843 '-fdo-lambda-eta-expansion', # After full laziness
845 $Oopt_PedanticBottoms,
846 $Oopt_MonadEtaExpansion,
847 $Oopt_MaxSimplifierIterations,
848 $Oopt_ShowSimplifierProgress,
857 '-ffloat-lets-exposing-whnf',
858 '-ffloat-primops-ok',
862 '-fdo-eta-reduction',
863 '-fdo-lambda-eta-expansion',
865 ($Oopt_FoldrBuildInline),
866 # you need to inline foldr and build
867 ($Oopt_FoldrBuild) ? ('-fdo-foldr-build') : (),
868 # but do reductions if you see them!
869 $Oopt_PedanticBottoms,
870 $Oopt_MonadEtaExpansion,
871 $Oopt_MaxSimplifierIterations,
872 $Oopt_ShowSimplifierProgress,
881 '-ffloat-lets-exposing-whnf',
882 '-ffloat-primops-ok',
886 # '-fdo-eta-reduction',
887 '-fdo-lambda-eta-expansion',
889 '-flet-to-case', # Aha! Only done after strictness analysis
890 $Oopt_PedanticBottoms,
891 $Oopt_MonadEtaExpansion,
892 $Oopt_MaxSimplifierIterations,
893 $Oopt_ShowSimplifierProgress,
898 # Case-liberation for -O2. This should be after
899 # strictness analysis and the simplification which follows it.
903 # : "-fliberate-case -fsimplify [ $Oopt_FB_Support -ffloat-lets-exposing-whnf -ffloat-primops-ok -fcase-of-case -fdo-case-elim -fcase-merge -fdo-eta-reduction -fdo-lambda-eta-expansion -freuse-con -flet-to-case $Oopt_PedanticBottoms $Oopt_MonadEtaExpansion $Oopt_MaxSimplifierIterations $Oopt_ShowSimplifierProgress ]" ),
905 # Final clean-up simplification:
910 '-ffloat-lets-exposing-whnf',
911 '-ffloat-primops-ok',
915 # '-fdo-eta-reduction',
916 '-fdo-lambda-eta-expansion',
919 '-fignore-inline-pragma', # **** NB!
920 $Oopt_FoldrBuildInline,
921 ($Oopt_FoldrBuild) ? ('-fdo-foldr-build') : (),
922 # but still do reductions if you see them!
923 $Oopt_PedanticBottoms,
924 $Oopt_MonadEtaExpansion,
925 $Oopt_MaxSimplifierIterations,
926 $Oopt_ShowSimplifierProgress,
931 #LATER: '-fcalc-inlinings2', -- pointless for 2.01
935 $Oopt_FinalStgProfilingMassage,
941 # SPECIAL FLAGS for -O2
943 '-fupdate-analysis', # virtually useless; relegated to -O2
950 Sort out what we're going to do about optimising. First, the @hsc@
951 flags and regular @cc@ flags to worry about:
953 if ( $OptLevel <= 0 ) {
955 # for this level, we tell the parser -fignore-interface-pragmas
956 push(@HsC_flags, '-fignore-interface-pragmas');
957 # and tell the compiler not to produce them
958 push(@HsC_flags, '-fomit-interface-pragmas');
960 &add_Hsc_flags( @HsC_minusNoO_flags );
961 push(@CcBoth_flags, ($MinusO2ForC) ? '-O2' : '-O'); # not optional!
963 } elsif ( $OptLevel == 1 || $OptLevel == 2 ) {
965 &add_Hsc_flags( @HsC_minusO_flags );
966 push(@CcBoth_flags, ($MinusO2ForC || $OptLevel == 2) ? '-O2' : '-O'); # not optional!
967 # -O? to GCC is not optional! -O2 probably isn't worth it generally,
968 # but it *is* useful in compiling the garbage collector.
970 } else { # -Ofile, then...
972 &add_Hsc_flags( @HsC_minusO3_flags );
973 push(@HsC_flags, $Oopt_FinalStgProfilingMassage) if $Oopt_FinalStgProfilingMassage;
975 push(@CcBoth_flags, ($MinusO2ForC) ? '-O2' : '-O'); # possibly to be elaborated...
978 } # setupOptimiseFlags
982 %************************************************************************
984 \subsection{Check for consistency, etc.}
986 %************************************************************************
988 Sort out @$BuildTag@, @$PROFing@, @$PARing@,
989 @$GRANing@, @$TICKYing@:
991 sub setupBuildFlags {
994 # PROFILING stuff after argv mangling:
996 # warn about any scc exprs found (in case scc used as identifier)
997 push(@HsP_flags, '-W');
999 # add -auto sccs even if not profiling !
1000 push(@HsC_flags, $UNPROFscc_auto) if $UNPROFscc_auto;
1003 push(@HsC_flags, $PROFauto) if $PROFauto;
1004 push(@HsC_flags, $PROFcaf) if $PROFcaf;
1005 push(@HsC_flags, $PROFdict) if $PROFdict;
1007 $Oopt_FinalStgProfilingMassage = '-fmassage-stg-for-profiling';
1009 # Ignore user sccs when auto annotating, but warn when doing so.
1010 $PROFignore_scc = '-W' if $PROFauto;
1012 push(@HsP_flags, (($PROFignore_scc) ? $PROFignore_scc : '-S'));
1014 #if ( $BuildTag ne '' ) {
1015 # local($b) = $BuildDescr{$BuildTag};
1016 # if ($PARing eq 'p') { print STDERR "$Pgm: Can't mix $b with -parallel.\n"; exit 1; }
1017 # if ($GRANing eq 'g') { print STDERR "$Pgm: Can't mix $b with -gransim.\n"; exit 1; }
1018 # if ($TICKYing eq 't') { print STDERR "$Pgm: Can't mix $b with -ticky.\n"; exit 1; }
1020 # # ok to have a user-way profiling build
1021 # # eval the profiling opts ... but leave user-way BuildTag
1022 # if ($PROFing eq 'p') { &processArgs(split(' ', $SetupOpts{'_p'})); } # eval($EvaldSetupOpts{'_p'}); }
1024 if ( $PROFing eq 'p' ) {
1025 if ($PARing eq 'p') { print STDERR "$Pgm: Can't do profiling with -parallel.\n"; exit 1; }
1026 if ($GRANing eq 'g') { print STDERR "$Pgm: Can't do profiling with -gransim.\n"; exit 1; }
1027 if ($TICKYing eq 't') { print STDERR "$Pgm: Can't do profiling with -ticky.\n"; exit 1; }
1030 } elsif ( $PARing eq 'p' ) {
1031 if ($GRANing eq 'g') { print STDERR "$Pgm: Can't mix -parallel with -gransim.\n"; exit 1; }
1032 if ($TICKYing eq 't') { print STDERR "$Pgm: Can't mix -parallel with -ticky.\n"; exit 1; }
1035 if ( $Do_lnkr && ( ! $ENV{'PVM_ROOT'} || ! $ENV{'PVM_ARCH'} )) {
1036 print STDERR "$Pgm: both your PVM_ROOT and PVM_ARCH environment variables must be set for linking under -parallel.\n";
1040 } elsif ( $GRANing eq 'g' ) {
1041 if ($TICKYing eq 't') { print STDERR "$Pgm: Can't mix -gransim with -ticky.\n"; exit 1; }
1044 } elsif ( $TICKYing eq 't' ) {
1050 After the sanity checks, add flags to the necessary parts of the driver pipeline:
1053 if ( $BuildTag ne '' ) { # something other than normal sequential...
1055 local($Tag) = "${BuildTag}";
1056 $Tag =~ s/_//; # move the underscore to the back
1058 $HscOut = '-C='; # must go via C
1059 &processArgs(split(' ', $SetupOpts{$BuildTag}));
1060 # eval($EvaldSetupOpts{$BuildTag});
1064 Decide what the consistency-checking options are in force for this run:
1067 $HsC_consist_options = "${BuildTag},${DEBUGging}";
1068 $Cc_consist_options = "${BuildTag},${DEBUGging}";
1071 # Funny place to put it, but why not.
1073 if ( $HiSuffix_prelude eq '' ) {
1074 local($Tag) = "${BuildTag}";
1076 $Tag = "${Tag}_" if $Tag ne '';
1077 $HiSuffix_prelude="${Tag}hi";
1082 %************************************************************************
1084 \subsection{Add on machine-specific C-compiler flags}
1086 %************************************************************************
1088 Shove on magical machine-specific options. We use \tr{unshift} to
1089 stick them on the {\em front} of the arrays, so that ``later''
1090 user-specified flags can clobber them (e.g., \tr{-U__STG_REV_TBLS__}).
1092 Note: a few ``always apply'' flags were set at the very beginning.
1097 if ($TargetPlatform =~ /^alpha-/) {
1098 unshift(@CcBoth_flags, ('-static'));
1100 } elsif ($TargetPlatform =~ /^hppa/) {
1101 unshift(@CcBoth_flags, ('-static'));
1103 # We don't put in '-mlong-calls', because it's only
1104 # needed for very big modules (sigh), and we don't want
1105 # to hobble ourselves further on all the other modules
1108 # [Dated comment (gcc-2.6.x?), -mlong-calls is no longer
1109 # a supported gcc HPPA flag]
1110 unshift(@CcBoth_flags, ('-D_HPUX_SOURCE'));
1111 # ___HPUX_SOURCE, not _HPUX_SOURCE, is #defined if -ansi!
1112 # (very nice, but too bad the HP /usr/include files don't agree.)
1114 } elsif ($TargetPlatform =~ /^i386-/) {
1115 # -fno-defer-pop : basically the same game as for m68k
1117 # -fomit-frame-pointer : *must* in .hc files; because we're stealing
1118 # the fp (%ebp) for our register maps.
1120 unshift(@CcRegd_flags_hc, '-fno-defer-pop');
1121 unshift(@CcRegd_flags_hc, '-fomit-frame-pointer');
1122 unshift(@CcRegd_flags, "-DSTOLEN_X86_REGS=$StolenX86Regs");
1124 } elsif ($TargetPlatform =~ /^m68k-/) {
1125 # -fno-defer-pop : for the .hc files, we want all the pushing/
1126 # popping of args to routines to be explicit; if we let things
1127 # be deferred 'til after an STGJUMP, imminent death is certain!
1129 # -fomit-frame-pointer : *don't*
1130 # It's better to have a6 completely tied up being a frame pointer
1131 # rather than let GCC pick random things to do with it.
1132 # (If we want to steal a6, then we would try to do things
1133 # as on iX86, where we *do* steal the frame pointer [%ebp].)
1135 unshift(@CcRegd_flags_hc, '-fno-defer-pop');
1136 unshift(@CcRegd_flags, '-fno-omit-frame-pointer');
1137 # maybe gives reg alloc a better time
1138 # also: -fno-defer-pop is not sufficiently well-behaved without it
1140 } elsif ($TargetPlatform =~ /^mips-/) {
1141 unshift(@CcBoth_flags, ('-static'));
1143 } elsif ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
1144 unshift(@CcBoth_flags, ('-static')); # always easier to start with
1145 unshift(@CcRegd_flags, ('-finhibit-size-directive')); # avoids traceback tables
1146 } elsif ($TargetPlatform =~ /^sparc-/) {
1148 } # end of setupMachOpts
1151 %************************************************************************
1153 \subsection{Set up for warnings}
1155 %************************************************************************
1157 Several warnings are turned on by default. These are supposed to be
1158 the 'I'm pretty sure you've made a mistake here' kind of warnings.
1159 The rest are turned on by the -W and -Wall options, or individually
1160 via their -fwarn and -fno-warn flags.
1163 sub setupWarningFlags {
1164 &add_Hsc_flags( @StandardWarnings );
1168 Same unshifting magic, but for special linker flags.
1170 The configure script determines whether the object file symbol tables
1171 have a leading underscore, and sets @LeadingUnderscore@ accordingly.
1172 (The driver script `sees' the setting of the @LeadingUnderscore@
1173 by having the Makefile prepend it).
1177 local($uscore) = ( ${LeadingUnderscore} eq 'YES' ) ? '_' : '';
1180 (($Ld_main) ? ( '-u', "${uscore}Main_" . $Ld_main . '_closure' ) : ()));
1182 # things that are referenced by the RTS - make sure that we pull 'em in
1184 ( '-u', "${uscore}PrelBase_Izh_static_info"
1185 ,'-u', "${uscore}PrelBase_Czh_static_info"
1186 ,'-u', "${uscore}PrelBase_Fzh_static_info"
1187 ,'-u', "${uscore}PrelBase_Dzh_static_info"
1188 ,'-u', "${uscore}PrelAddr_Azh_static_info"
1189 ,'-u', "${uscore}PrelAddr_Wzh_static_info"
1190 ,'-u', "${uscore}PrelAddr_I64zh_static_info"
1191 ,'-u', "${uscore}PrelAddr_W64zh_static_info"
1192 ,'-u', "${uscore}PrelStable_StablePtr_static_info"
1193 ,'-u', "${uscore}PrelBase_Izh_con_info"
1194 ,'-u', "${uscore}PrelBase_Czh_con_info"
1195 ,'-u', "${uscore}PrelBase_Fzh_con_info"
1196 ,'-u', "${uscore}PrelBase_Dzh_con_info"
1197 ,'-u', "${uscore}PrelAddr_Azh_con_info"
1198 ,'-u', "${uscore}PrelAddr_Wzh_con_info"
1199 ,'-u', "${uscore}PrelAddr_I64zh_con_info"
1200 ,'-u', "${uscore}PrelAddr_W64zh_con_info"
1201 ,'-u', "${uscore}PrelStable_StablePtr_con_info"
1202 ,'-u', "${uscore}PrelBase_False_static_closure"
1203 ,'-u', "${uscore}PrelBase_True_static_closure"
1204 ,'-u', "${uscore}PrelPack_unpackCString_closure"
1205 ,'-u', "${uscore}PrelException_stackOverflow_closure"
1206 ,'-u', "${uscore}PrelException_heapOverflow_closure"
1208 if (!$NoHaskellMain) {
1209 unshift (@Ld_flags,'-u', "${uscore}PrelMain_mainIO_closure");
1211 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
1212 # sometimes we have lots of toc entries...
1213 # unshift(@Ld_flags, ('-Xlinker -bbigtoc -Xlinker -bnoquiet'));
1214 unshift(@Ld_flags, ('-Xlinker -bbigtoc'));
1218 } # end of setupLinkOpts
1222 %************************************************************************
1224 \subsection{Set up include paths and system-library enslurpment}
1226 %************************************************************************
1228 Now that we know what garbage-collector, etc., are required, we can
1229 finalise our list of libraries to slurp through, and generally Get
1234 # default includes must be added AFTER option processing
1235 if ( ! $INSTALLING ) {
1236 push (@Include_dir, "$TopPwd/${CURRENT_DIR}/${GHC_INCLUDE_DIR}");
1238 push (@Include_dir, "$InstLibDirGhc/includes");
1239 push (@Include_dir, "$InstLibDirGhc/includes");
1241 } # end of setupIncPaths
1246 push(@SysLibrary, ( '-lHS', '-lHS_cbits' )); # basic I/O and prelude stuff
1249 foreach $f (@SysLibrary) {
1250 next if $f =~ /_cbits/;
1251 $f .= $BuildTag if $f =~ /^-lHS/;
1254 # Push library HSrts, plus boring clib bit
1255 push(@SysLibrary, "-lHSrts${BuildTag}");
1258 # RTS compiled with cygwin32, uses the WinMM API
1259 # to implement the itimers, since cygwin.dll does not
1260 # support it. Only reqd. for `ways' that use itimers.
1262 push(@SysLibrary, '-lwinmm') if $TargetPlatform eq 'i386-unknown-cygwin32';
1264 # Push the pvm libraries
1265 if ($BuildTag eq '_mp') {
1266 $pvmlib = "$ENV{'PVM_ROOT'}/lib/$ENV{'PVM_ARCH'}";
1267 push(@SysLibrary, "-L$pvmlib", '-lgpvm3', '-lpvm3');
1268 if ( $ENV{'PVM_ARCH'} eq 'SUNMP' ) {
1269 push(@SysLibrary, '-lthread', '-lsocket', '-lnsl');
1270 } elsif ( $ENV{'PVM_ARCH'} eq 'SUN4SOL2' ) {
1271 push(@SysLibrary, '-lsocket', '-lnsl');
1275 # Push the GNU multi-precision arith lib; and the math library
1277 # If this machine has GMP already installed, then we'll get the installed
1278 # lib here, because presumably the one in the tree won't have been built.
1280 if ($LibGmp eq 'not-installed') {
1281 push(@SysLibrary, "-lgmp");
1283 push(@SysLibrary, "-l$LibGmp");
1286 push(@SysLibrary, '-lm') if !( $TargetPlatform =~ /^.*(cygwin32|mingw32)$/ );
1289 %************************************************************************
1291 \subsection{Check that this system was built to do what we are asking}
1293 %************************************************************************
1295 Before continuing we check that the appropriate build is available.
1298 #die "$Pgm: no BuildAvail?? $BuildTag\n" if $BuildDescr{$BuildTag} eq '' ; # sanity
1300 if ( $BuildDescr{$BuildTag} eq '' ) {
1301 print STDERR "$Pgm: a `", $BuildDescr{$BuildTag},
1302 "' \"build\" is not available with your GHC setup.\n";
1303 print STDERR "(It was not configured for it at your site.)\n";
1304 print STDERR $ShortUsage;
1308 } # end of setupSyslibs
1312 %************************************************************************
1314 \subsection{Final miscellaneous setup bits before we start going}
1316 %************************************************************************
1318 Record largest specific heapsize, if any.
1320 sub setupHeapStackSize {
1321 $Specific_heap_size = $Specific_heap_size * $Scale_sizes_by;
1322 push(@HsC_rts_flags, '-H'.$Specific_heap_size);
1323 $Specific_stk_size = $Specific_stk_size * $Scale_sizes_by;
1324 push(@HsC_rts_flags, "-K$Specific_stk_size");
1328 If no input or link files seen, then we let 'em feed in stdin; this is
1329 mainly for debugging.
1333 if ($#Input_file < 0 && $#Link_file < 0) {
1334 @Input_file = ( '-' );
1336 open(INF, "> $Tmp_prefix.hs") || &tidy_up_and_die(1,"Can't open $Tmp_prefix.hs\n");
1337 print STDERR "Enter your Haskell program, end with ^D (on a line of its own):\n" if -t;
1338 while (<STDIN>) { print INF $_; }
1339 close(INF) || &tidy_up_and_die(1,"Failed writing to $Tmp_prefix.hs\n");
1344 Tell the world who we are, if they asked.
1346 print STDERR "${ProjectName}, version ${ProjectVersion}, patchlevel ${ProjectPatchLevel}\n"
1350 %************************************************************************
1352 \section[Driver-main-loop]{Main loop: Process input files, and link if required}
1354 %************************************************************************
1356 Process the input files; don't continue with linking if there are
1357 problems (global variable @$Status@ non-zero).
1359 foreach $ifile (@Input_file) {
1360 &ProcessInputFile($ifile);
1363 if ( $Status > 0 ) { # don't link if there were errors...
1364 print STDERR $ShortUsage;
1369 # append last minute flags linker and consistency flags
1376 Link if appropriate.
1379 local($libdirs) = '';
1381 # glue them together:
1382 push(@UserLibrary_dir, @SysLibrary_dir);
1384 $libdirs = '-L' . join(' -L',@UserLibrary_dir) if $#UserLibrary_dir >= 0;
1386 # for a linker, use an explicitly given one, or the going C compiler ...
1387 local($lnkr) = ( $Lnkr ) ? $Lnkr : $CcRegd;
1389 if ( ($Specific_output_file eq '') &&
1390 ($TargetPlatform eq 'i386-unknown-cygwin32') ) {
1391 $Specific_output_file = 'main.exe';
1392 print STDERR "Output file not specified, defaulting to \"main.exe\"\n";
1395 local($output) = ($Specific_output_file ne '') ? "-o $Specific_output_file" : '';
1396 @Files_to_tidy = ($Specific_output_file ne '') ? $Specific_output_file : 'a.out';
1399 # Win32 DLLs - link with import libraries, not the real archives.
1401 if ( $TargetPlatform =~ /-mingw32$/ && !$Static ) {
1402 foreach $a ( @SysLibrary ) {
1403 next if ($a eq '-lm');
1404 $a = "${a}_imp" if ($a =~ /^-l/);
1406 push(@Link_file, ( $INSTALLING ) ? "$InstLibDirGhc/Main.o"
1407 : "$TopPwd/$CURRENT_DIR/$GHC_RUNTIME_DIR/Main.o");
1408 push(@Link_file, ( $INSTALLING ) ? "$InstLibDirGhc/PrelMain.o"
1409 : "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/PrelMain.o");
1410 push(@Ld_flags, "-mno-cygwin");
1412 local($to_do) = "$lnkr $Verbose @Ld_flags $output @Link_file $TopClosureFile $libdirs @UserLibrary @SysLibrary";
1413 &run_something($to_do, 'Linker');
1415 # finally, check the consistency info in the binary
1416 local($executable) = $Files_to_tidy[0];
1417 @Files_to_tidy = (); # reset; we don't want to nuke it if it's inconsistent
1420 # dynamically load consistency-chking code; then do it.
1421 require('ghc-consist.prl')
1422 || &tidy_up_and_die(1,"$Pgm: panic: can't load ghc-consist.prl!\n");
1424 &chk_consistency_info ( $executable );
1427 # if PVM parallel stuff, we do truly weird things.
1428 # Essentially: (1) move the executable over to where PVM expects
1429 # to find it. (2) create a script in place of the executable
1430 # which will cause the program to be run, via SysMan.
1431 if ( $PARing eq 'p' ) {
1432 local($pvm_executable) = $executable;
1433 local($pvm_executable_base);
1435 if ( $pvm_executable !~ /^\// ) { # a relative path name: make absolute
1436 local($pwd) = `pwd`;
1438 $pwd =~ s/^\/tmp_mnt//;
1439 $pvm_executable = "$pwd/$pvm_executable";
1442 $pvm_executable =~ s|/|=|g; # make /s into =s
1443 $pvm_executable_base = $pvm_executable;
1445 $pvm_executable = $ENV{'PVM_ROOT'} . '/bin/' . $ENV{'PVM_ARCH'}
1446 . "/$pvm_executable";
1448 &run_something("$Rm -f $pvm_executable; $Cp -p $executable $pvm_executable && $Rm -f $executable", 'Moving binary to PVM land');
1450 # OK, now create the magic script for "$executable"
1451 open(EXEC, "> $executable") || &tidy_up_and_die(1,"$Pgm: couldn't open $executable to write!\n");
1452 print EXEC <<EOSCRIPT1;
1453 eval 'exec perl -S \$0 \${1+"\$@"}'
1454 if \$running_under_some_shell;
1455 # =!=!=!=!=!=!=!=!=!=!=!
1456 # This script is automatically generated: DO NOT EDIT!!!
1457 # Generated by Glasgow Haskell, version ${ProjectVersion} ${ProjectPatchLevel}
1459 \$pvm_executable = '$pvm_executable';
1460 \$pvm_executable_base = '$pvm_executable_base';
1461 \$SysMan = '$SysMan';
1464 print EXEC <<\EOSCRIPT2;
1465 # first, some magical shortcuts to run "commands" on the binary
1467 if ($#ARGV == 1 && $ARGV[0] eq '+RTS' && $ARGV[1] =~ /^--((size|file|strip|rm|nm).*)/ ) {
1469 system("$cmd $pvm_executable");
1473 # OK, really run it; process the args first
1474 $ENV{'PE'} = $pvm_executable_base;
1476 $nprocessors = 2; # the default
1480 # ToDo: handle --RTS
1481 args: while ($a = shift(@ARGV)) {
1482 if ( $a eq '+RTS' ) {
1484 } elsif ( $a eq '-RTS' ) {
1487 if ( $a eq '-d' && $in_RTS_args ) {
1489 } elsif ( $a =~ /^-N(\d+)/ && $in_RTS_args ) {
1492 push(@nonPVM_args, $a);
1496 local($return_val) = 0;
1497 system("$SysMan $debug $pvm_executable $nprocessors @nonPVM_args");
1499 system("mv $ENV{'HOME'}/$pvm_executable_base.???.gr .") if -f "$ENV{'HOME'}/$pvm_executable_base.001.gr";
1502 close(EXEC) || die "Failed closing $executable\n";
1503 chmod 0755, $executable;
1507 # that... that's all, folks!
1509 exit $Status; # will still be 0 if all went well
1512 %************************************************************************
1514 \section[Driver-do-one-file]{How to process a single input file}
1516 %************************************************************************
1519 sub ProcessInputFile {
1520 local($ifile) = @_; # input file name
1521 local($ifile_root); # root of or basename of input file
1522 local($ofile_target); # ultimate output file we hope to produce
1523 # from input file (need to know for recomp
1524 # checking purposes)
1525 local($hifile_target);# ditto (but .hi file)
1526 local($ofile_c_stub_target);
1527 local($ofile_h_stub_target);
1530 Handle the weirdity of input from stdin.
1532 if ($ifile ne '-') {
1533 ($ifile_root = $ifile) =~ s/\.[^\.\/]+$//;
1534 $ofile_target = # may be reset later...
1535 ($Specific_output_file ne '' && ! $Do_lnkr)
1536 ? $Specific_output_file
1537 : &odir_ify($ifile_root, 'o');
1538 $hifile_target= ($Specific_hi_file ne '')
1540 : "$ifile_root.$HiSuffix"; # ToDo: odirify?
1541 # NB: may change if $ifile_root isn't module name (??)
1542 ($ofile_c_stub_target = $ifile) =~s/\.[^\.\/]+$/_stub.c/;
1543 ($ofile_h_stub_target = $ifile) =~s/\.[^\.\/]+$/_stub.h/;
1545 $ifile = "$Tmp_prefix.hs"; # we know that's where we put the input
1546 $ifile_root = '_stdin';
1547 $ofile_target = '_stdout'; # gratuitous?
1548 $hifile_target= '_stdout'; # ditto?
1552 We need to decide what phases of the compilation system we will run
1553 over this file. The defaults are the ones established when processing
1554 flags. (That established what the last phase run for all files is.)
1556 We do the pre-recompilation-checker phases here; the rest later.
1560 Look at the suffix and decide what initial phases of compilation may
1561 be dropped off for this file. Also the rather boring business of
1562 which files are coming-in/going-out.
1564 Again, we'll do the post-recompilation-checker parts of this later.
1566 local($do_lit2pgm) = ($ifile =~ /\.lhs$/) ? 1 : 0;
1567 local($do_hscpp) = 1; # but "hscpp" might really be "cat"
1570 # names of the files to stuff between phases
1571 # defaults are temporaries
1572 local($in_lit2pgm) = $ifile;
1573 local($lit2pgm_hscpp) = "$Tmp_prefix.lpp";
1574 local($hscpp_hsc) = "$Tmp_prefix.cpp";
1575 local($hsc_hi) = "$Tmp_prefix.hi";
1576 local($cc_as_o) = "${Tmp_prefix}_o.s"; # temporary for raw .s file if opt C
1577 local($cc_as) = "$Tmp_prefix.s"; # mangled or hsc-produced .s code
1578 local($as_out) = $ofile_target;
1580 local($is_hc_file) = 1; #Is the C code .hc or .c? Assume .hc for now
1582 # OK, let's strip off some literate junk..
1584 &runLit2pgm($in_lit2pgm, $lit2pgm_hscpp)
1586 $lit2pgm_hscpp = $ifile;
1592 # Scan the top of the de-litted file for {-# OPTIONS #-} pragmas
1593 &check_for_source_options($lit2pgm_hscpp,$ifile);
1595 # Options found in the source file take a back seat, i.e., we scan
1596 # them first. Only process the command line again if source file
1597 # contained anything of interest *or* there's more than one
1598 # input file (we have to reset the options).
1600 if ( $#Input_file >= 0 || $#File_options >= 0) {
1601 #@File_options = (@File_options, @Cmd_opts);
1603 # Now process the command line
1604 &initDriverGlobals();
1605 &processArgs((@File_options,@Cmd_opts));
1606 print STDERR "\nEffective command line: " .
1607 join(' ',(@File_options,@Cmd_opts)) . "\n" if $Verbose;
1610 # Having got the effective command line scanned, set up
1611 # the various options in prep for some real work.
1613 # check the sanity of the BuildTag we're about to use,
1614 # and if needs be, add some more flags and setup to
1615 # the different phases.
1618 &setupOptimiseFlags();
1621 &setupWarningFlags();
1622 &setupHeapStackSize();
1625 # These two variables need to be set after the
1626 # command-line has been processed and the build options
1627 # have be seen set up. This is because command-line options
1628 # can control whether to compile vias C or not.
1630 local($do_cc) = ( $Do_cc != -1) # i.e., it was set explicitly
1632 : ( ($HscOut eq '-C=') ? 1 : 0 );
1633 local($do_as) = $Do_as;
1634 local($hsc_out) = ( $HscOut eq '-C=' ) ? "$Tmp_prefix.hc" : "$Tmp_prefix.s" ;
1635 local($hsc_out_c_stub) = ( $HscOut eq '-C=' ) ? "${Tmp_prefix}_stb.c" : "";
1636 local($hsc_out_h_stub) = ( $HscOut eq '-C=' ) ? "${Tmp_prefix}_stb.h" : "";
1638 if ($Only_preprocess_hc) { # stop after having run $Cc -E
1641 if ($Only_preprocess_C) { # stop after having run $hscpp
1642 $do_hsc=0; $do_cc = 0; $do_as=0;
1643 } elsif ($ifile =~ /.lhs$/ || $ifile =~ /.hs$/ ) {
1645 } elsif ($ifile =~ /\.hc$/ || $ifile =~ /_hc$/ ) { # || $ifile =~ /\.$Isuffix$/o) # ToDo: better
1646 $do_hscpp = 0; $do_hsc = 0; $do_cc = 1;
1648 $hsc_out_c_stub = '';
1649 $hsc_out_h_stub = '';
1650 } elsif ($ifile =~ /\.c$/) {
1651 $do_hscpp = 0; $do_hsc = 0; $do_cc = 1;
1652 $hsc_out = $ifile; $is_hc_file = 0;
1653 $hsc_out_c_stub = '';
1654 $hsc_out_h_stub = '';
1655 } elsif ($ifile =~ /\.[sS]$/) {
1656 $do_hscpp = 0; $do_hsc = 0; $do_cc = 0;
1658 } else { # don't know what it is, but nothing to do herein...
1659 $do_hscpp = 0; $do_hsc = 0; $do_cc = 0; $do_as = 0;
1662 # hack to avoid running hscpp
1663 $HsCpp = $Cat if ! $Cpp_flag_set;
1665 &runHscpp($in_lit2pgm, $lit2pgm_hscpp, $hscpp_hsc) if $do_hscpp;
1669 We now think about whether to run hsc/cc or not (when hsc produces .s
1670 stuff, it effectively takes the place of both phases).
1671 To get the output file name right: for each phase that we are {\em
1672 not} going to run, set its input (i.e., the output of its preceding
1673 phase) to @"$ifile_root.<suffix>"@.
1676 local($going_interactive) = $HscOut eq '-N=' || $ifile_root eq '_stdin';
1679 # Warning issued if -keep-hc-file-too is used without
1680 # -fvia-C (or the equivalent)
1682 if ( $HscOut ne '-C=' && $Keep_hc_file_too ) {
1683 print STDERR "$Pgm: warning: Native code generator to be used, -keep-hc-file-too will be ignored\n";
1686 if (! $do_cc && ! $do_as) { # stopping after hsc
1687 $hsc_out = ($Specific_output_file ne '')
1688 ? $Specific_output_file
1689 : &odir_ify($ifile_root, ($HscOut eq '-C=') ? 'hc' : 's');
1691 $ofile_target = $hsc_out; # reset
1694 if (! $do_as) { # stopping after gcc (or hsc)
1695 $cc_as = ($Specific_output_file ne '')
1696 ? $Specific_output_file
1697 : &odir_ify($ifile_root, ( $Only_preprocess_hc ) ? 'i' : 's');
1699 $ofile_target = $cc_as; # reset
1705 Now the Haskell compiler, C compiler, and assembler
1709 &runHscAndProcessInterfaces( $ifile, $hscpp_hsc, $ifile_root,
1710 $ofile_target, $hifile_target,
1711 $going_interactive);
1714 if (-f $hsc_out_h_stub) {
1715 &run_something("cp $hsc_out_h_stub $ofile_h_stub_target", 'Copy foreign export header file');
1718 if (-f $hsc_out_c_stub) {
1719 &run_something("cp $hsc_out_c_stub $ofile_c_stub_target", 'Copy foreign export C stubs');
1720 local ($hsc_out_s_stub);
1721 local ($hsc_out_o_stub);
1722 ($ofile_s_stub_target = $ofile_c_stub_target) =~ s/\.(.*)$/\.s/;
1723 ($ofile_o_stub_target = $ofile_c_stub_target) =~ s/\.(.*)$/\.o/;
1724 &runGcc (0, $ofile_c_stub_target, $ofile_s_stub_target);
1725 &runAs ($ofile_o_stub_target, $ofile_s_stub_target);
1727 # Bring the C stub protos into scope when compiling the .hc file.
1729 push (@CcInjects, "#include \"${hsc_out_h_stub}\"\n");
1730 # Hack - ensure that the stub .h file is included in the OPTIONS section
1731 # if the .hc file is saved.
1732 push (@File_options, "-#include \"${ofile_h_stub_target}\"\n");
1737 &runGcc ($is_hc_file, $hsc_out, $cc_as_o);
1738 &runMangler($is_hc_file, $cc_as_o, $cc_as, $ifile_root) if ! $Only_preprocess_hc;
1741 &split_asm_file($cc_as) if $do_as && $SplitObjFiles;
1743 # save a copy of the .s file..
1744 &saveIntermediate($ifile_root , "s" , $cc_as) if ($do_as && $Keep_s_file_too);
1745 &runAs($as_out, $ifile_root) if $do_as;
1748 Finally, decide what to queue up for linker input.
1750 # tentatively assume we will eventually produce linker input:
1751 push(@Link_file, &odir_ify($ifile_root, 'o'));
1753 #ToDo: local($or_isuf) = ($Isuffix eq '') ? '' : "|$Isuffix";
1755 if ( $ifile !~ /\.(lhs|hs|hc|c|s|a|S)$/ && $ifile !~ /_hc$/ ) {
1756 # There's sometimes confusion regarding .hi files; users
1757 # supplying them on the command line.
1758 if ( $ifile =~ /\.hi$/ ) {
1759 print STDERR "$Pgm: warning: found `$ifile' on command line; interface files should not be supplied here - ignoring it.\n";
1761 print STDERR "$Pgm: don't recognise suffix on `$ifile'; passing it through to linker\n";
1763 # oops; we tentatively pushed the wrong thing; fix & do the right thing
1764 pop(@Link_file); push(@Link_file, $ifile);
1768 } # end of ProcessInputFile
1771 %************************************************************************
1773 \section[Driver-run-phases]{Routines to run the various phases}
1775 %************************************************************************
1779 local($in_lit2pgm, $lit2pgm_hscpp) = @_;
1783 # Only add #line pragma if we're going to need it.
1784 $to_do = "echo '#line 1 \"$in_lit2pgm\"' > $lit2pgm_hscpp && " if ($Cpp_flag_set);
1785 $to_do .= "$Unlit @Unlit_flags $in_lit2pgm - >> $lit2pgm_hscpp";
1787 push(@Files_to_tidy, $lit2pgm_hscpp );
1789 &run_something($to_do, 'literate pre-processor');
1795 local($in_lit2pgm, $lit2pgm_hscpp, $hscpp_hsc) = @_;
1799 # Strictly speaking, echoing of the following line pragma is only required
1800 # on non-delit'ed input, as we've already added it during de-lit. However,
1801 # hscpp will then add a {-# LINE 1 "$lit2pgm_hsc" -} to the top of the file,
1802 # which is not very informative (but harmless). Hence, we uniformly have
1803 # {-# LINE 1 "$in_lit2pgm" #-} as the first line to all cpp'ed hsc input.
1805 $to_do = "echo '{-# LINE 1 \"$in_lit2pgm\" -}' > $hscpp_hsc && ";
1807 if ($HsCpp eq $Cat) {
1808 $to_do .= "$HsCpp $lit2pgm_hscpp >> $hscpp_hsc";
1809 push(@Files_to_tidy, $hscpp_hsc );
1810 &run_something($to_do, 'Ineffective C pre-processor');
1812 local($includes) = '-I' . join(' -I',@Include_dir);
1813 $to_do .= "$HsCpp $Verbose @HsCpp_flags @HsSourceCppOpts $includes $lit2pgm_hscpp >> $hscpp_hsc";
1814 push(@Files_to_tidy, $hscpp_hsc );
1815 &run_something($to_do, 'Haskellised C pre-processor');
1818 if ( $Only_preprocess_C ) {
1819 $to_do = "$Cat $hscpp_hsc";
1820 &run_something($to_do, '');
1828 sub runHscAndProcessInterfaces {
1829 local($ifile, $hscpp_hsc, $ifile_root,
1830 $ofile_target, $hifile_target,
1831 $going_interactive) = @_;
1833 # $ifile is the original input file
1834 # $hscpp_hsc post-unlit, post-cpp, etc., input file
1835 # $ifile_root input filename minus suffix
1836 # $ofile_target the output file that we ultimately hope to produce
1837 # $hifile_target the .hi file ... (ditto)
1839 local($source_unchanged) = 1;
1841 # Check if the source file is up to date relative to the target; in
1842 # that case we say "source is unchanged" and let the compiler bail out
1843 # early if the import usage information allows it.
1845 ($i_dev,$i_ino,$i_mode,$i_nlink,$i_uid,$i_gid,$i_rdev,$i_size,
1846 $i_atime,$i_mtime,$i_ctime,$i_blksize,$i_blocks) = stat($ifile);
1848 # The informational messages below are now conditional on -v being set -- SOF
1849 if ( $ofile_target ne "_stdin.s" && ! -f $ofile_target ) {
1850 print STDERR "$Pgm:compile:Output file $ofile_target doesn't exist\n" if $Verbose;
1851 $source_unchanged = 0;
1854 ($o_dev,$o_ino,$o_mode,$o_nlink,$o_uid,$o_gid,$o_rdev,$o_size,
1855 $o_atime,$o_mtime,$o_ctime,$o_blksize,$o_blocks) = stat(_); # stat info from -f test
1857 if ( $hifile_target ne "_stdout" && ! -f $hifile_target ) {
1858 print STDERR "$Pgm:compile:Interface file $hifile_target doesn't exist\n" if $Verbose;
1859 $source_unchanged = 0;
1862 ($hi_dev,$hi_ino,$hi_mode,$hi_nlink,$hi_uid,$hi_gid,$hi_rdev,$hi_size,
1863 $hi_atime,$hi_mtime,$hi_ctime,$hi_blksize,$hi_blocks) = stat(_); # stat info from -f test
1865 if ( $ofile_target ne "_stdin.s" && $i_mtime > $o_mtime) {
1866 print STDERR "$Pgm:recompile:Input file $ifile newer than $ofile_target\n" if $Verbose;
1867 $source_unchanged = 0;
1870 # Tell the compiler which version we're using
1871 push(@HsC_flags, "-fhi-version=${ProjectVersionInt}");
1873 # So if source_unchanged is still "1", we pass on the good news to the compiler
1874 # The -recomp flag can disable this, forcing recompilation
1875 if ($Do_recomp_chkr && $source_unchanged) {
1876 push(@HsC_flags, '-fsource-unchanged');
1879 # Indicate whether we're static or not.
1880 # This will only ever
1881 push(@HsC_flags, '-static') if $Static;
1885 &runHsc($ifile_root, $hsc_out, $hsc_hi, $hsc_out_c_stub, $hsc_out_h_stub, $going_interactive);
1887 # See if it bailed out early, saying nothing needed doing.
1888 # We work this out by seeing if it created an output .hi file
1890 if ( ! -f $hsc_hi && $ProduceHi !~ /-nohifile=/ ) {
1891 # Doesn't exist, so we bailed out early.
1892 # Tell the C compiler and assembler not to run
1893 $do_cc = 0; $do_as = 0;
1895 # Update dependency info, touch both object file and
1896 # interface file, so that the following invariant is
1899 # a dependent module's interface file should after recompilation
1900 # checking be newer than the interface files of its imports.
1902 # That is, if module A's interface file changes, then module B
1903 # (which import from A) needs to be checked.
1904 # If A's change does not affect B, which causes the compiler to bail
1905 # out early, we still need to touch the interface file of B. The reason
1906 # for this is that B may export A's interface.
1908 &run_something("touch $ofile_target",
1909 "Touch $ofile_target, to propagate dependencies") if $HscOut ne '-N=';
1910 &run_something("touch $hifile_target",
1911 "Touch $hifile_target, to propagate dependencies") if $ProduceHi =~ /-nohifile=/ ;
1915 # Didn't bail out early (new .hi file) so we thunder on
1917 # If non-interactive, heave in the consistency info at the end
1918 # NB: pretty hackish (depends on how $output is set)
1919 if ( ! $going_interactive ) {
1920 if ( $HscOut eq '-C=' ) {
1921 $to_do = "echo 'static char ghc_hsc_ID[] = \"\@(#)hsc $ifile\t$HsC_major_version.$HsC_minor_version,$HsC_consist_options\";' >> $hsc_out";
1923 } elsif ( $HscOut eq '-S=' ) {
1924 local($consist) = "hsc.$ifile.$HsC_major_version.$HsC_minor_version.$HsC_consist_options";
1925 $consist =~ s/,/./g;
1926 $consist =~ s/\//./g;
1927 $consist =~ s/-/_/g;
1928 $consist =~ s/[^A-Za-z0-9_.]/ZZ/g; # ToDo: properly?
1929 $to_do = "echo '\n\t.text\n$consist:' >> $hsc_out";
1931 &run_something($to_do, 'Pin on Haskell consistency info');
1935 # Interface-handling is important enough to live off by itself
1936 if ( $ProduceHi !~ /-nohifile=/ ) { # If we've produced one, process it.
1937 require('ghc-iface.prl') || &tidy_up_and_die(1,"$Pgm: panic: can't load ghc-iface.prl!\n");
1938 &postprocessHiFile($hsc_hi, $hifile_target, $going_interactive);
1940 # if we're going to split up object files,
1941 # we inject split markers into the .hc file now
1942 if ( $HscOut eq '-C=' && $SplitObjFiles ) {
1943 &inject_split_markers ( $hsc_out );
1946 # save a copy of the .hc file, even if we are carrying on...
1947 if ($HscOut eq '-C=' && $do_cc && $Keep_hc_file_too) {
1948 &saveIntermediate($ifile_root , "hc" , $hsc_out);
1958 local($ifile_root, $hsc_out, $hsc_hi, $hsc_out_c_stub, $hsc_out_h_stub, $going_interactive) = @_;
1960 # prepend comma to HsP flags (so hsc can tell them apart...)
1961 foreach $a ( @HsP_flags ) { $a = ",$a" unless $a =~ /^,/; }
1963 &makeHiMap() unless $HiMapDone;
1964 push(@HsC_flags, "-himap=$HiIncludeString");
1966 # here, we may produce .hc/.s and/or .hi files
1967 local($output) = '';
1968 #@Files_to_tidy = ();
1970 if ( $going_interactive ) {
1971 # don't need .hi unless we're going to show it on stdout:
1972 $ProduceHi = '-nohifile=' if ! ($HiOnStdout || $Specific_hi_file ne '' );
1973 $do_cc = 0; $do_as = 0; $Do_lnkr = 0; # and we won't go any further...
1976 # set up for producing output/.hi; note that flag twiddling
1977 # may mean that nothing will actually be produced:
1978 $output = "$ProduceHi$hsc_hi $HscOut$hsc_out -F=$hsc_out_c_stub -FH=$hsc_out_h_stub";
1979 push(@Files_to_tidy, $hsc_hi, $hsc_out, $hsc_out_c_stub, $hsc_out_h_stub );
1981 # if we're compiling foo.hs, we want the GC stats to end up in foo.stat
1982 if ( $CollectingGCstats ) {
1983 push(@HsC_rts_flags, "-S$ifile_root.stat");
1984 push(@Files_to_tidy, "$ifile_root.stat");
1987 if ( $CollectGhcTimings ) { # assume $RTS_style eq 'ghc'
1988 # emit nofibbish time/bytes-alloc stats to stderr;
1989 # see later .stat file post-processing
1990 print STDERR "warning: both -Rgc-stats and -Rghc-timing used, -Rghc-timing wins." if $CollectingGCstats;
1991 push(@HsC_rts_flags, "-s$Tmp_prefix.stat");
1992 push(@Files_to_tidy, "$Tmp_prefix.stat");
1996 if ($Specific_dump_file ne '') {
1997 $dump = "2>> $Specific_dump_file";
1998 $Using_dump_file = 1;
2002 # Win32 only: If the command processor used by system()
2003 # exec()s the application as an ordinary Win32 executable,
2004 # we're in trouble here, since the command line is likely
2005 # to be > 255 chars long. To work around this situation,
2006 # $HsC also understands `at-files', i.e., `@file' on the
2007 # command line will cause $HsC to add the contents of `file'
2008 # to the command line.
2010 # [ Note: support for `at-files' is not compiled in by default ]
2011 $cmd_line_opts_via_at_file=0;
2012 if ($cmd_line_opts_via_at_file) {
2014 local($to_do_opts) = "$Tmp_prefix.opts";
2015 open(OPTS, "> $Tmp_prefix.opts") || &tidy_up_and_die(1,"Can't open $Tmp_prefix.opts\n");
2016 print OPTS "$dump @HsC_flags $CoreLint $StgLint $Verbose";
2018 $to_do = "$HsC @HsP_flags ,$hscpp_hsc \@$Tmp_prefix.opts $output +RTS @HsC_rts_flags";
2022 $to_do = "$HsC @HsP_flags ,$hscpp_hsc $dump @HsC_flags $CoreLint $StgLint $Verbose $output +RTS @HsC_rts_flags";
2024 &run_something($to_do, 'Haskell compiler');
2026 # finish business w/ nofibbish time/bytes-alloc stats
2027 &process_ghc_timings() if $CollectGhcTimings;
2031 Use \tr{@Import_dir} and \tr{@SysImport_dir} to make a tmp file
2032 of (module-name, pathname) pairs, one per line, separated by a space.
2035 $HiIncludeString = (); # dir1:dir2:dir3, to pass to GHC
2039 # collect in %HiMap; write later; also used elsewhere in driver
2041 local($mod, $path, $d, $e);
2043 # reset the global variables:
2045 $HiIncludeString = (); # dir1:dir2:dir3, to pass to GHC
2047 foreach $d ( @Import_dir ) {
2048 if ($HiIncludeString) {
2049 $HiIncludeString = "$HiIncludeString:${d}%.${HiSuffix}";
2051 $HiIncludeString = "$d%.${HiSuffix}";
2056 foreach $d ( @SysImport_dir ) {
2057 if ($HiIncludeString) {
2058 $HiIncludeString = "$HiIncludeString:${d}%.${HiSuffix_prelude}";
2060 $HiIncludeString = "${d}%.${HiSuffix_prelude}";
2069 %************************************************************************
2071 \section[Driver-misc-utils]{Miscellaneous utilities}
2073 %************************************************************************
2075 %************************************************************************
2077 \subsection[Driver-odir-ify]{@odir_ify@: Mangle filename if \tr{-odir} set}
2079 %************************************************************************
2083 local($ofile,$def_suffix) = @_;
2085 return(($Osuffix eq '') ? "$ofile.$def_suffix" : "$ofile.$Osuffix" );
2089 local($orig_file, $def_suffix) = @_;
2090 if ($Specific_output_dir eq '') { # do nothing
2091 &osuf_ify($orig_file, $def_suffix);
2093 local ($orig_file_only);
2094 ($orig_file_only = $orig_file) =~ s|.*/||;
2095 &osuf_ify("$Specific_output_dir/$orig_file_only",$def_suffix);
2102 local($is_hc_file, $hsc_out, $cc_as_o) = @_;
2104 local($includes) = '-I' . join(' -I', @Include_dir);
2107 local($c_flags) = "@CcBoth_flags";
2108 local($ddebug_flag) = ( $DEBUGging ) ? '-DDEBUG' : '';
2110 $c_flags .= " -mno-cygwin" if ( $TargetPlatform =~ /-mingw32$/ );
2112 # "input" files to use that are not in some weird directory;
2113 # to help C compilers grok .hc files [ToDo: de-hackify]
2114 local($cc_help) = "ghc$$.c";
2115 local($cc_help_s) = "ghc$$.s";
2118 $s_output = (($is_hc_file && $DoAsmMangling) || $TargetPlatform =~ /^(powerpc|rs6000|hppa)/) ? $cc_as_o : $cc_as;
2119 $c_flags .= " @CcRegd_flags";
2120 $c_flags .= ($is_hc_file) ? " @CcRegd_flags_hc" : " @CcRegd_flags_c";
2122 # C compiler won't like the .hc extension. So we create
2123 # a tmp .c file which #include's the needful.
2124 open(TMP, "> $cc_help") || &tidy_up_and_die(1,"$Pgm: failed to open `$cc_help' (to write)\n");
2125 if ( $is_hc_file ) {
2129 # user may have asked for #includes to be injected...
2130 print TMP @CcInjects if $#CcInjects >= 0;
2132 # Straight .c files may want to know that they're being used
2133 # with a particular version of GHC, so we define __GLASGOW_HASKELL__ for their benefit.
2134 print TMP "#define __GLASGOW_HASKELL__ ${ProjectVersionInt}\n";
2136 # heave in the consistency info
2137 print TMP "static char ghc_cc_ID[] = \"\@(#)cc $ifile\t$Cc_major_version.$Cc_minor_version,$Cc_consist_options\";\n";
2139 print TMP "#include \"$hsc_out\"\n";
2140 close(TMP) || &tidy_up_and_die(1,"Failed writing to $cc_help\n");
2142 # Don't redirect stderr into intermediate file if slamming output onto stdout (e.g., with -E)
2143 local($fuse_stderr) = "2>&1" if ! $Only_preprocess_hc;
2144 local($to_do) = "$cc $Verbose $ddebug_flag $c_flags @Cpp_define $includes $cc_help > $Tmp_prefix.ccout $fuse_stderr && ( if [ $cc_help_s != $s_output ] ; then mv $cc_help_s $s_output ; else exit 0 ; fi )";
2146 if ( $Only_preprocess_hc ) { # HACK ALERT!
2147 $to_do =~ s/ -S\b//g;
2149 push(@Files_to_tidy, $cc_help, $cc_help_s, $s_output );
2150 $PostprocessCcOutput = 1 if ! $Only_preprocess_hc; # hack, dear hack...
2151 &run_something($to_do, 'C compiler');
2152 $PostprocessCcOutput = 0;
2153 if ( $Only_preprocess_hc ) {
2154 system("$Cat $Tmp_prefix.ccout");
2156 unlink($cc_help, $cc_help_s);
2162 local($is_hc_file, $cc_as_o, $cc_as, $ifile_root) = @_;
2164 print STDERR `cat $cc_as_o` if $Dump_raw_asm; # to stderr, before mangling
2166 if ($is_hc_file && $DoAsmMangling) {
2167 # dynamically load assembler-fiddling code, which we are about to use:
2168 require('ghc-asm.prl')
2169 || &tidy_up_and_die(1,"$Pgm: panic: can't load ghc-asm.prl!\n");
2170 # post-process the assembler [.hc files only]
2171 &mangle_asm($cc_as_o, $cc_as);
2173 } elsif ($TargetPlatform =~ /^hppa/) {
2174 # minor mangling of non-threaded files for hp-pa only
2175 require('ghc-asm.prl')
2176 || &tidy_up_and_die(1,"$Pgm: panic: can't load ghc-asm-hppa.prl!\n");
2177 &mini_mangle_asm_hppa($cc_as_o, $cc_as);
2179 } elsif ($TargetPlatform =~ /^powerpc|^rs6000/) {
2180 # minor mangling of non-threaded files for powerpcs and rs6000s
2181 require('ghc-asm.prl')
2182 || &tidy_up_and_die(1,"$Pgm: panic: can't load ghc-asm-powerpc.prl!\n");
2183 &mini_mangle_asm_powerpc($cc_as_o, $cc_as);
2186 # save a copy of the .s file, even if we are carrying on...
2187 #if ($do_as && $Keep_s_file_too) {
2188 # &saveIntermediate($ifile_root , "s" , $cc_as);
2195 local($as_out, $ifile_root) = @_;
2197 local($asmblr) = ( $As ) ? $As : $CcRegd;
2199 # need to add the -I flags in case the file is going through cpp (.S files)
2200 local($includes) = '-I' . join(' -I', @Include_dir);
2202 if ( ! $SplitObjFiles ) {
2203 local($to_do) = "$asmblr -o $as_out -c @As_flags $includes $cc_as";
2204 push(@Files_to_tidy, $as_out );
2205 &run_something($to_do, 'Unix assembler');
2207 } else { # more complicated split-ification...
2209 # must assemble files $Tmp_prefix__[1 .. $NoOfSplitFiles].s
2211 # If -odir is used, great, just pin it in front of the
2212 # generated split file names. If it hasn't been set, we
2213 # snatch it from the ifile_root.
2217 if ( $Specific_output_dir eq '' ) {
2218 $Specific_output_dir = ${ifile_root};
2221 for ($f = 1; $f <= $NoOfSplitFiles; $f++ ) {
2222 local($split_out) = &odir_ify("${ifile_root}__${f}",'o');
2223 local($to_do) = "$asmblr -o $split_out -c @As_flags ${Tmp_prefix}__${f}.s";
2224 push(@Files_to_tidy, $split_out );
2226 &run_something($to_do, 'Unix assembler');
2232 %************************************************************************
2234 \subsection[Driver-run-something]{@run_something@: Run a phase}
2236 %************************************************************************
2240 local($str_to_do, $tidy_name) = @_;
2242 print STDERR "\n$tidy_name:\n\t" if $Verbose;
2243 print STDERR "$str_to_do\n" if $Verbose;
2245 if ($Using_dump_file) {
2246 open(DUMP, ">> $Specific_dump_file")
2247 || &tidy_up_and_die(1,"$Pgm: failed to open `$Specific_dump_file'\n");
2248 print DUMP "\nCompilation Dump for: $str_to_do\n\n";
2250 || &tidy_up_and_die(1,"$Pgm: failed closing `$Specific_dump_file'\n");
2253 local($return_val) = 0;
2255 if ( length($str_to_do) > 4000) {
2256 # 4000 - on the random side, just like the *real* ARG_MAX
2259 # With some shells, command lines of this length may
2260 # very well cause trouble. To safeguard against this, we squirrel the
2261 # command into a file and exec that.
2262 local ($sh) = $ENV{'REAL_SHELL'};
2263 print STDERR "Backup plan A: saving cmd line in ${Tmp_prefix}.sh and executing that with $sh\n" if $Verbose;
2264 open (TEMP, "> ${Tmp_prefix}.sh") ||
2265 &tidy_up_and_die(1,"$Pgm: failed to open `$Tmp_prefix.sh'\n");
2266 print TEMP "$Time $str_to_do\n";
2268 &tidy_up_and_die(1,"$Pgm: failed closing `$Tmp_prefix.sh'\n");
2269 system("$sh $Tmp_prefix.sh");
2272 unlink "${Tmp_prefix}.sh";
2274 system("$Time $str_to_do");
2278 if ( $PostprocessCcOutput ) { # hack, continued
2279 open(CCOUT, "< $Tmp_prefix.ccout")
2280 || &tidy_up_and_die(1,"$Pgm: failed to open `$Tmp_prefix.ccout'\n");
2282 next if /call-clobbered/;
2283 next if /control reaches end/;
2284 next if /from .*Stg\.h:/;
2285 next if /from ghc\d+.c:\d+:/;
2286 next if /: At top level:$/;
2287 next if /: In function \`.*\':$/;
2288 next if /\`ghc_cc_ID\' defined but not used/;
2291 close(CCOUT) || &tidy_up_and_die(1,"$Pgm: failed closing `$Tmp_prefix.ccout'\n");
2294 if ($return_val != 0) {
2295 if ($Using_dump_file) {
2296 print STDERR "Compilation Errors dumped in $Specific_dump_file\n";
2298 &tidy_up_and_die($return_val, '');
2300 $Using_dump_file = 0;
2304 %************************************************************************
2306 \subsection[Driver-ghc-timing]{Emit nofibbish GHC timings}
2308 %************************************************************************
2310 NB: nearly the same as in @runstdtest@ script.
2313 sub process_ghc_timings {
2314 local($StatsFile) = "$Tmp_prefix.stat";
2315 local($SysSpecificTiming) = 'ghc';
2317 open(STATS, $StatsFile) || die "Failed when opening $StatsFile\n";
2318 local($max_live) = 0;
2319 local($tot_live) = 0; # for calculating residency stuff
2320 local($tot_samples) = 0;
2323 if (! /Gen:\s+0/ && ! /Minor/ && /^\s*\d+\s+\d+\s+(\d+)\s+\d+\.\d+/ ) {
2324 $max_live = $1 if $max_live < $1;
2328 $BytesAlloc = $1 if /^\s*([0-9,]+) bytes allocated in the heap/;
2330 if ( /^\s*([0-9,]+) bytes maximum residency .* (\d+) sample/ ) {
2331 $MaxResidency = $1; $ResidencySamples = $2;
2334 $GCs = $1 if /^\s*([0-9,]+) (collections? in generation 0|garbage collections? performed)/;
2336 if ( /^\s+([0-9]+)\s+Mb total memory/ ) {
2340 # The presence of -? in the following pattern is only there to
2341 # accommodate 0.29 && <= 2.05 RTS'
2342 if ( /^\s*INIT\s+time\s*(\d+\.\d\d)s\s*\(\s*-?(\d+\.\d\d)s elapsed\)/ ) {
2343 $InitTime = $1; $InitElapsed = $2;
2344 } elsif ( /^\s*MUT\s+time\s*(\d+\.\d\d)s\s*\(\s*(\d+\.\d\d)s elapsed\)/ ) {
2345 $MutTime = $1; $MutElapsed = $2;
2346 } elsif ( /^\s*GC\s+time\s*(\d+\.\d\d)s\s*\(\s*(\d+\.\d\d)s elapsed\)/ ) {
2347 $GcTime = $1; $GcElapsed = $2;
2350 close(STATS) || die "Failed when closing $StatsFile\n";
2351 if ( $tot_samples > 0 ) {
2352 $ResidencySamples = $tot_samples;
2353 $MaxResidency = $max_live;
2354 $AvgResidency = int ($tot_live / $tot_samples) ;
2357 # warn about what we didn't find
2358 print STDERR "Warning: BytesAlloc not found in stats file\n" unless defined($BytesAlloc);
2359 print STDERR "Warning: GCs not found in stats file\n" unless defined($GCs);
2360 print STDERR "Warning: InitTime not found in stats file\n" unless defined($InitTime);
2361 print STDERR "Warning: InitElapsed not found in stats file\n" unless defined($InitElapsed);
2362 print STDERR "Warning: MutTime not found in stats file\n" unless defined($MutTime);
2363 print STDERR "Warning: MutElapsed not found in stats file\n" unless defined($MutElapsed);
2364 print STDERR "Warning: GcTime inot found in stats file\n" unless defined($GcTime);
2365 print STDERR "Warning: GcElapsed not found in stats file\n" unless defined($GcElapsed);
2367 # things we didn't necessarily expect to find
2368 $MaxResidency = 0 unless defined($MaxResidency);
2369 $AvgResidency = 0 unless defined($AvgResidency);
2370 $ResidencySamples = 0 unless defined($ResidencySamples);
2373 $BytesAlloc =~ s/,//g;
2374 $MaxResidency =~ s/,//g;
2376 $InitTime =~ s/,//g;
2377 $InitElapsed =~ s/,//g;
2379 $MutElapsed =~ s/,//g;
2381 $GcElapsed =~ s/,//g;
2383 # print out what we found
2384 print STDERR "<<$SysSpecificTiming: ",
2385 "$BytesAlloc bytes, $GCs GCs, $AvgResidency/$MaxResidency avg/max bytes residency ($ResidencySamples samples), ${TotMem}M in use, $InitTime INIT ($InitElapsed elapsed), $MutTime MUT ($MutElapsed elapsed), $GcTime GC ($GcElapsed elapsed)",
2386 " :$SysSpecificTiming>>\n";
2393 %************************************************************************
2395 \subsection[Driver-dying]{@tidy_up@ and @tidy_up_and_die@: Dying gracefully}
2397 %************************************************************************
2401 local($to_do) = "\n$Rm $Tmp_prefix*";
2402 if ( $Tmp_prefix !~ /^\s*$/ ) {
2403 print STDERR "$to_do\n" if $Verbose;
2408 sub tidy_up_and_die {
2409 local($return_val, $msg) = @_;
2411 # delete any files to tidy
2412 print STDERR "deleting... @Files_to_tidy\n" if $Verbose && $#Files_to_tidy >= 0;
2413 unlink @Files_to_tidy if $#Files_to_tidy >= 0;
2417 exit (($return_val == 0) ? 0 : 1);
2421 %************************************************************************
2423 \subsection[Driver-arg-with-arg]{@grab_arg_arg@: Do an argument with an argument}
2425 %************************************************************************
2427 Some command-line arguments take an argument, e.g.,
2428 \tr{-Rmax-heapsize} expects a number to follow. This can either be
2429 given a part of the same argument (\tr{-Rmax-heapsize8M}) or as the
2430 next argument (\tr{-Rmax-heapsize 8M}). We allow both cases.
2432 Note: no error-checking; \tr{-Rmax-heapsize -Rgc-stats} will silently
2433 gobble the second argument (and probably set the heapsize to something
2437 local(*Args, $option, $rest_of_arg) = @_;
2439 if ($rest_of_arg ne '') {
2440 return($rest_of_arg);
2441 } elsif ($#Args >= 0) {
2442 local($temp) = $Args[0]; shift(@Args);
2445 print STDERR "$Pgm: no argument following $option option\n";
2456 #Not in HsC_antiflag ## NO!: and not already in HsC_flags
2458 foreach $f ( @HsC_antiflags ) {
2459 return(0) if $flag eq $f;
2461 # foreach $f ( @HsC_flags ) {
2462 # return(0) if $flag eq $f;
2467 sub squashHscFlag { # pretty terrible
2471 foreach $f ( @HsC_flags ) {
2472 if ($flag eq $f) { $f = ''; }
2480 foreach $f ( @flags ) {
2481 push( @HsC_flags, $f ) if &isntAntiFlag($f);
2486 To add another system library, you'll need to augment the
2487 Supported_syslibs variable with name and info on your addition
2488 to the syslib family. The info bit consist of the following:
2490 - interface file directory
2491 see the misc or posix entry for how to distinguish
2492 between using installed and build tree directories.
2494 - directory location of archives
2496 - location of (way-independent) C support libs.
2497 not all libraries need this - if you don't, just
2498 give the empty string.
2499 - list of syslibs you depend on.
2501 - additional ghc command line flags that should be used.
2502 - additional C compiler command line flags that should be used.
2508 # Hash to keep track of
2509 %Syslibs_added = ();
2512 local($syslib) = @_;
2514 # Lifting this out of this sub brings it out of scope - why??
2515 %Supported_syslibs =
2517 [ # where to slurp interface files from
2519 ? "$InstLibDirGhc/imports/exts"
2520 : "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/exts"
2522 , # where to find the archive to use when linking
2525 : "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/exts"
2528 , '' # Syslib dependencies
2529 , '' # extra ghc opts
2530 , '' # extra cc opts
2531 , '' # extra ld opts
2535 [ # where to slurp interface files from
2537 ? "$InstLibDirGhc/imports/misc"
2538 : "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/misc"
2540 , # where to find the archive to use when linking
2543 : "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/misc"
2545 , # where to find the cbits archive to use when linking
2548 : "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/misc/cbits"
2550 , 'exts' # Syslib dependencies
2551 , '' # extra ghc opts
2552 , '' # extra cc opts
2553 , ( $TargetPlatform =~ /-solaris2$/ ? '-lnsl -lsocket' : '')
2556 [ # where to slurp interface files from
2558 ? "$InstLibDirGhc/imports/hbc"
2559 : "$TopPwd/CONTRIB/libraries/hbc/src"
2561 , # where to find the archive to use when linking
2564 : "$TopPwd/CONTRIB/libraries/src/hbc"
2566 , # where to find the cbits archive to use when linking
2569 : "$TopPwd/CONTRIB/libraries/hbc/cbits"
2571 , 'exts' # Syslib dependencies
2572 , '' # extra ghc opts
2573 , '' # extra cc opts
2577 [ # where to slurp interface files from
2579 ? "$InstLibDirGhc/imports/posix"
2580 : "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/posix"
2582 , # where to find the archive to use when linking
2585 : "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/posix"
2587 , # where to find the cbits archive to use when linking
2590 : "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/posix/cbits"
2592 , 'misc' # Syslib dependencies
2593 , '' # extra ghc opts
2594 , '' # extra cc opts
2595 , '' # extra ld opts
2598 [ # where to slurp interface files from
2600 ? "$InstLibDirGhc/imports/concurrent"
2601 : "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/concurrent"
2603 , # where to find the archive to use when linking
2606 : "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/concurrent"
2608 , '' # where to find the cbits archive to use when linking
2609 , '' # Syslib dependencies
2610 , '' # extra ghc opts
2611 , '' # extra cc opts
2612 , '' # extra ld opts
2615 [ # where to slurp interface files from
2617 ? "$InstLibDirGhc/imports/win32"
2618 : "$TopPwd/hslibs/win32/src"
2620 , # where to find the archive to use when linking
2623 : "$TopPwd/hslibs/win32/src"
2626 , 'exts' # Syslib dependencies
2627 , '' # extra ghc opts
2628 , '' # extra cc opts
2629 , '-luser32 -lgdi32' # extra ld opts
2633 # check if it's supported..
2635 if ( !exists $Supported_syslibs{$syslib} ) {
2636 print STDERR "$Pgm: no such system library (-syslib): $syslib\n";
2641 # This check is here to avoid syslib loops from
2642 # spoiling the party. A side-effect of it is that
2643 # it disallows multiple mentions of a syslib on a command-line,
2644 # explicit *and* implicit ones (i.e., "-syslib exts -syslib misc"
2645 # is not equal to "-syslib exts -syslib misc -syslib exts",
2646 # which it needs to be)
2648 # Since our current collection of syslibs don't have any
2649 # loops, this test is disabled.
2651 # ToDo: loop avoidance scheme when the need arises
2653 #return if ( exists $Syslibs_added{$syslib} );
2655 $Syslibs_added{$syslib} = 1;
2657 local ($hi_dir, $lib_dir, $lib_cbits_dir,
2658 $syslib_deps, $syslib_ghc_opts,
2659 $syslib_cc_opts, $syslib_ld_opts) = @{ $Supported_syslibs{$syslib} };
2662 unshift(@SysImport_dir, $hi_dir);
2663 push(@SysLibrary_dir, $lib_dir);
2664 push(@SysLibrary_dir, $lib_cbits_dir) if ( $lib_cbits_dir ne '');
2666 push(@SysLibrary, "-lHS$syslib");
2667 push(@SysLibrary, "-lHS${syslib}_cbits") if ( $lib_cbits_dir ne '');
2668 push(@SysLibrary, $syslib_ld_opts) if ($syslib_ld_opts ne '');
2670 # Add on any extra dependencies.
2671 foreach $lib (split(' ',$syslib_deps)) {
2677 Source files may have {-# OPTIONS ... #-} pragmas at the top, containing
2678 command line options we want to append to collection of commands specified
2679 directly. @check_for_source_options@ looks at the top of a de-lit'ified Haskell
2680 file for any such pragmas:
2683 sub check_for_source_options {
2684 local($file,$ifile) = @_;
2685 local($comment_start,$comment_end);
2687 if ($ifile =~ /\.hc$/ ||
2690 $ifile =~ /_s$/ ) { # `Real' C intermediate
2691 $comment_start = "/\\*";
2692 $comment_end = "\\*/";
2693 } else { # Assume it is a file containing Haskell source
2694 $comment_start = "{-#";
2695 $comment_end = "#-}";
2698 open(FILE,$file) || return(1); # No big loss
2701 if ( /^${comment_start} OPTIONS (.*)${comment_end}$/ ) {
2702 # add the options found at the back of the command line.
2703 local(@entries) = split(/\s+/,$1);
2704 print STDERR "Found OPTIONS " . join(' ',@entries) . " in $file\n" if $Verbose;
2705 push(@File_options, @entries);
2707 elsif ( /^$/ ) { # ignore empty lines
2710 elsif ( /^#line.+$/ ) { # ignore comment lines (unused..ToDo: rm )
2713 elsif ( /^{-# LINE.+$/ ) { # ignore line pragmas
2716 else { # stop looking, something non-empty / not
2717 # ${comment_start} OPTIONS .. ${comment_end} encountered.
2718 close(FILE);return(0);
2727 We split the initial argv up into three arrays:
2733 the reason for doing so is to be able to deal
2734 with {-# OPTIONS #-} pragma in source files properly.
2740 arg: while($_ = $args[0]) {
2742 # sigh, we have to deal with these -option arg specially here.
2743 /^-(tmpdir|odir|ohi|o|isuf|osuf|hisuf|odump|syslib)$/ &&
2744 do { push(@Cmd_opts, $_); push(@Cmd_opts,$args[0]); shift(@args); next arg; };
2745 /^--?./ && do { push(@Cmd_opts, $_); next arg; };
2747 if (/\.([^_]+_)?[oa]$/) {
2748 push(@Link_file, $_);
2750 push(@Input_file, $_);
2753 # input files must exist:
2755 print STDERR "$Pgm: input file doesn't exist: $_\n";
2763 When saving an intermediate file (.hc or .s) away, we
2764 have to prefix any OPTIONS found in the original source file.
2767 sub saveIntermediate {
2768 local ($final,$suffix,$tmp)= @_ ;
2771 # $final -- root of where to park ${final}.${suffix}
2772 # $tmp -- temporary file where hsc put the intermediate file.
2774 # Delete the old file
2775 $to_do = "$Rm ${final}.${suffix}"; &run_something($to_do, "Removing old .${suffix} file");
2777 if ( $#File_options >= 0 ) { # OPTIONS found in Haskell source unit
2778 # Add OPTION comment to the top of the generated .${suffix} file
2779 open(TEMP, "> ${final}.${suffix}") || &tidy_up_and_die(1,"Can't open ${final}.${suffix}\n");
2780 print TEMP "/* OPTIONS " . join(' ',@File_options) . " */\n";
2782 print STDERR "Prepending OPTIONS: " . join(' ',@File_options) . " to ${final}.${suffix}\n" if $Verbose;
2784 $to_do = "$Cat $tmp >> ${final}.${suffix}";
2785 &run_something($to_do, "Saving copy of .${suffix} file");
2792 Command-line processor
2798 # can't use getopt(s); what we want is too complicated
2800 arg: while($_ = $Args[0]) {
2803 #---------- help -------------------------------------------------------
2804 if (/^-\?$/ || /^--?help$/) { print $LongUsage; exit $Status; }
2806 #-----------version ----------------------------------------------------
2807 /^--version$/ && do { print STDERR "${ProjectName}, version ${ProjectVersion}, patchlevel ${ProjectPatchLevel}\n"; exit $Status; };
2809 #---------- verbosity and such -----------------------------------------
2810 /^-v$/ && do { $Verbose = '-v'; $Time = 'time'; next arg; };
2812 #---------- what phases are to be run ----------------------------------
2813 /^-(no-)?recomp/ && do { $Do_recomp_chkr = ($1 eq '') ? 1 : 0; next arg; };
2815 /^-cpp$/ && do { $Cpp_flag_set = 1; next arg; };
2816 # change the global default:
2817 # we won't run cat; we'll run the real thing
2819 /^-C$/ && do { $Do_cc = 0; $Do_as = 0; $Do_lnkr = 0; $HscOut = '-C=';
2821 # stop after generating C
2823 /^-noC$/ && do { $HscOut = '-N='; $ProduceHi = '-nohifile=';
2824 $Do_cc = 0; $Do_as = 0; $Do_lnkr = 0;
2826 # leave out actual C generation (debugging) [also turns off interface gen]
2829 /^-hi$/ && do { $HiOnStdout = 1; $ProduceHi = '-hifile='; next arg; };
2830 # _do_ generate an interface; usually used as: -noC -hi
2831 /^-hi-with-(.*)$/ && do { $HiOnStdout = 1; $HiWith .= " $1" ; $ProduceHi = '-hifile='; next arg; };
2832 # limit ourselves to outputting a particular section.
2834 /^-nohi$/ && do { $ProduceHi = '-nohifile='; next arg; };
2835 # don't generate an interface (even if generating C)
2837 /^-hi-diffs$/ && do { $HiDiff_flag = 'normal'; next arg; };
2838 /^-hi-diffs-with-usages$/ && do { $HiDiff_flag = 'usages'; next arg; };
2839 /^-no-hi-diffs$/ && do { $HiDiff_flag = ''; next arg; };
2840 /^-keep-hi-diffs$/ && do { $Keep_HiDiffs = 1; next arg; };
2842 # show/disable diffs if the interface file changes
2844 /^-E$/ && do { push(@CcBoth_flags, '-E');
2845 $Only_preprocess_C = 1;
2846 $Do_as = 0; $Do_lnkr = 0; next arg; };
2847 # stop after preprocessing C
2848 /^-M$/ && do { $Only_generate_deps = 1; $Do_as = 0; $Do_lnkr = 0; next arg; };
2849 # only generate dependency information.
2850 /^-S$/ && do { $Do_as = 0; $Do_lnkr = 0; next arg; };
2851 # stop after generating assembler
2853 /^-c$/ && do { $Do_lnkr = 0; next arg; };
2854 # stop after generating .o files
2856 /^-link-chk$/ && do { $LinkChk = 1; next arg; };
2857 # don't do consistency-checking after a link
2858 /^-no-link-chk$/ && do { $LinkChk = 0; next arg; };
2860 /^-tmpdir$/ && do { $Tmp_prefix = &grab_arg_arg(*Args,'-tmpdir', '');
2861 $Tmp_prefix = "$Tmp_prefix/ghc$$";
2862 $ENV{'TMPDIR'} = $Tmp_prefix; # for those who use it...
2864 # use an alternate directory for temp files
2866 #---------- redirect output --------------------------------------------
2868 # -o <file>; applies to the last phase, whatever it is
2869 # "-o -" sends it to stdout
2870 # if <file> has a directory component, that dir must already exist
2872 /^-odir$/ && do { $Specific_output_dir = &grab_arg_arg(*Args,'-odir', '');
2874 # Hack, of the worst sort: don't do validation of
2875 # odir argument if you're using -M (dependency generation).
2877 if ( ! $Only_generate_deps && ! -d $Specific_output_dir) {
2878 print STDERR "$Pgm: -odir: no such directory: $Specific_output_dir\n";
2883 /^-o$/ && do { $Specific_output_file = &grab_arg_arg(*Args,'-o', '');
2884 if ($Specific_output_file ne '-'
2885 && $Specific_output_file =~ /(.*)\/[^\/]*$/) {
2886 local($dir_part) = $1;
2887 if (! -d $dir_part) {
2888 print STDERR "$Pgm: no such directory: $dir_part\n";
2894 # NB: -isuf not documented yet (because it doesn't work yet)
2895 /^-isuf$/ && do { $Isuffix = &grab_arg_arg(*Args,'-isuf', '');
2896 if ($Isuffix =~ /\./ ) {
2897 print STDERR "$Pgm: -isuf suffix shouldn't contain a .\n";
2902 /^-osuf$/ && do { $Osuffix = &grab_arg_arg(*Args,'-osuf', '');
2903 if ($Osuffix =~ /\./ ) {
2904 print STDERR "$Pgm: -osuf suffix shouldn't contain a .\n";
2909 # -ohi <file>; send the interface to <file>; "-ohi -" to send to stdout
2910 /^-ohi$/ && do { $Specific_hi_file = &grab_arg_arg(*Args,'-ohi', '');
2911 if ($Specific_hi_file ne '-'
2912 && $Specific_hi_file =~ /(.*)\/[^\/]*$/) {
2913 local($dir_part) = $1;
2914 if (! -d $dir_part) {
2915 print STDERR "$Pgm: no such directory: $dir_part\n";
2919 $ProduceHi='-hifile=';
2922 # The suffix to use when looking for interface files
2923 /^-hisuf$/ && do { $HiSuffix = &grab_arg_arg(*Args,'-hisuf', '');
2924 if ($HiSuffix =~ /\./ ) {
2925 print STDERR "$Pgm: -hisuf suffix shouldn't contain a .\n";
2929 /^-odump$/ && do { $Specific_dump_file = &grab_arg_arg(*Args,'-odump', '');
2930 if ($Specific_dump_file =~ /(.*)\/[^\/]*$/) {
2931 local($dir_part) = $1;
2932 if (! -d $dir_part) {
2933 print STDERR "$Pgm: no such directory: $dir_part\n";
2939 #-------------- scc & Profiling Stuff ----------------------------------
2941 /^-prof$/ && do { $PROFing = 'p'; next arg; }; # profiling -- details later!
2943 /^-auto-dicts$/ && do {
2944 $PROFdicts = '-fauto-sccs-on-dicts';
2946 /^-auto-all$/ && do {
2947 $PROFauto = '-fauto-sccs-on-all-toplevs';
2950 $PROFauto = '-fauto-sccs-on-exported-toplevs';
2953 /^-caf-all/ && do { # generate individual CAF SCC annotations
2954 $PROFcaf = '-fauto-sccs-on-individual-cafs';
2957 /^-ignore-scc$/ && do {
2958 # forces ignore of scc annotations even if profiling
2959 $PROFignore_scc = '-W';
2962 /^-G(.*)$/ && do { push(@HsC_flags, "-G=$1"); # set group for cost centres
2965 /^-unprof-scc-auto/ && do {
2966 # generate auto SCCs on top level bindings when not profiling.
2967 # Used to measure optimisation effects of presence of sccs.
2968 $UNPROFscc_auto = ( /-all/ )
2969 ? '-fauto-sccs-on-all-toplevs'
2970 : '-fauto-sccs-on-exported-toplevs';
2973 #--------- ticky/parallel ----------------------------------------------
2974 # we sort out the details a bit later on
2976 /^-gransim$/ && do { $GRANing = 'g'; &add_syslib('concurrent'); next arg; }; # GranSim
2977 /^-ticky$/ && do { $TICKYing = 't'; next arg; }; # ticky-ticky
2978 /^-parallel$/ && do { $PARing = 'p'; &add_syslib('concurrent'); next arg; }; # parallel Haskell
2980 #-------------- "user ways" --------------------------------------------
2982 (/^-user-setup-([a-oA-Z])$/ ) &&
2984 /^-user-setup-([a-oA-Z])$/ && do { $BuildTag = "_$1"; };
2986 local($stuff) = $UserSetupOpts{$BuildTag};
2987 local(@opts) = split(/\s+/, $stuff);
2989 # feed relevant ops into the arg-processing loop (if any)
2990 unshift(@Args, @opts) if $#opts >= 0;
2994 #---------- set search paths for libraries and things ------------------
2996 # we do -i just like HBC (-i clears the list; -i<colon-separated-items>
2997 # prepends the items to the list); -I is for including C .h files.
2999 /^-i$/ && do { @Import_dir = (); # import path cleared!
3000 @SysImport_dir = ();
3001 print STDERR "WARNING: import paths cleared by `-i'\n";
3004 /^-i(.*)/ && do { local(@new_items)
3005 = split( /:/, &grab_arg_arg(*Args,'-i', $1));
3006 unshift(@Import_dir, @new_items);
3009 /^-I(.*)/ && do { push(@Include_dir, &grab_arg_arg(*Args,'-I', $1)); next arg; };
3010 /^-L(.*)/ && do { push(@UserLibrary_dir, &grab_arg_arg(*Args,'-L', $1)); next arg; };
3011 /^-l(.*)/ && do { push(@UserLibrary,'-l'.&grab_arg_arg(*Args,'-l', $1)); next arg; };
3013 /^-syslib(.*)/ && do { local($syslib) = &grab_arg_arg(*Args,'-syslib',$1);
3014 &add_syslib($syslib);
3017 #=======================================================================
3018 # various flags that we can harmlessly send to one program or another
3019 # (we will later "reclaim" some of the compiler ones now sent to gcc)
3020 #=======================================================================
3022 #---------- this driver itself (ghc) -----------------------------------
3023 # these change what executable is run for each phase:
3024 /^-pgmL(.*)$/ && do { $Unlit = $1; next arg; };
3025 /^-pgmP(.*)$/ && do { $HsCpp = $1; next arg; };
3026 /^-pgmC(.*)$/ && do { $HsC = $1; next arg; };
3027 /^-pgmcO?(.*)$/ && do { $CcRegd = $1; next arg; }; # the O? for back compat
3028 /^-pgma(.*)$/ && do { $As = $1; next arg; };
3029 /^-pgml(.*)$/ && do { $Lnkr = $1; next arg; };
3030 /^-pgmdep(.*)$/ && do { $MkDependHS = $1; next arg; };
3032 #---------- the get-anything-through opts (all pgms) -------------------
3033 # these allow arbitrary option-strings to go to any phase:
3034 /^-optL(.*)$/ && do { push(@Unlit_flags, $1); next arg; };
3035 /^-optP(.*)$/ && do { push(@HsCpp_flags, $1); next arg; };
3036 /^-optCrts(.*)$/&& do { push(@HsC_rts_flags, $1); next arg; };
3037 /^-optC(.*)$/ && do { push(@HsC_flags, $1); next arg; };
3038 /^-optp(.*)$/ && do { push(@HsP_flags, $1); next arg; };
3039 /^-optcpp(.*)$/ && do { push(@Cpp_define, $1); $Only_preprocess_hc = ($1 eq "-E"); next arg; };
3040 /^-optc(.*)$/ && do { push(@CcBoth_flags, $1); next arg; };
3041 /^-opta(.*)$/ && do { push(@As_flags, $1); next arg; };
3042 /^-optl(.*)$/ && do { push(@Ld_flags, $1); next arg; };
3043 /^-optdep(.*)$/ && do { push(@MkDependHS_flags, $1); next arg; };
3045 #---------- Haskell C pre-processor (hscpp) ----------------------------
3046 /^-D(.*)/ && do { push(@HsCpp_flags, "'-D".&grab_arg_arg(*Args,'-D',$1)."'"); next arg; };
3047 /^-U(.*)/ && do { push(@HsCpp_flags, "'-U".&grab_arg_arg(*Args,'-U',$1)."'"); next arg; };
3049 #---------- post-Haskell "assembler"------------------------------------
3050 /^-ddump-raw-asm$/ && do { $Dump_raw_asm = 1; next arg; };
3051 /^-ddump-asm-splitting-info$/ && do { $Dump_asm_splitting_info = 1; next arg; };
3053 #---------- Haskell compiler (hsc) -------------------------------------
3055 /^-keep-hc-files?-too$/ && do { $Keep_hc_file_too = 1; next arg; };
3056 /^-keep-s-files?-too$/ && do { $Keep_s_file_too = 1; next arg; };
3058 /^-fignore-interface-pragmas$/ && do { push(@HsC_flags, $_); next arg; };
3059 /^-fignore-asserts$/ && do { push(@HsC_flags, $_); next arg; };
3061 /^-fno-implicit-prelude$/ && do { $NoImplicitPrelude= 1; push(@HsC_flags, $_); next arg; };
3064 # have the compiler proper generate concurrent code,
3065 # really only used when you want to configure your own
3066 # special user compilation way.
3068 # (ditto for -fgransim, fscc-profiling, -fparallel and -fticky-ticky)
3070 /^-fscc-profiling$/ && do { push(@HsC_flags,$_); next arg; };
3071 /^-fticky-ticky$/ && do { push(@HsC_flags,$_); next arg; };
3072 /^-fgransim$/ && do { push(@HsC_flags,$_); next arg; };
3073 /^-fparallel$/ && do { push(@HsC_flags,$_); next arg; };
3075 /^-split-objs$/ && do {
3076 if ( $TargetPlatform !~ /^(alpha|hppa1\.1|i386|m68k|mips|powerpc|rs6000|sparc)-/ ) {
3078 print STDERR "WARNING: don't know how to split objects on this platform: $TargetPlatform\n`-split-objs' option ignored\n";
3083 push(@HsC_flags, "-fglobalise-toplev-names");
3084 push(@CcBoth_flags, '-DUSE_SPLIT_MARKERS');
3086 require('ghc-split.prl')
3087 || &tidy_up_and_die(1,"$Pgm: panic: can't load ghc-split.prl!\n");
3091 /^-fno-asm-mangling$/ && do { $DoAsmMangling = 0; next arg; };
3093 /^-fallow-overlapping-instances$/ && do { push(@HsC_flags, $_); next arg; };
3094 /^-fallow-undecidable-instances$/ && do { push(@HsC_flags, $_); next arg; };
3096 && do { push(@HsC_flags, $_);
3097 push(@HsP_flags, '-N');
3099 # -fglasgow-exts implies -syslib exts
3100 &add_syslib('exts');
3105 && do { $Oopt_DoSpecialise = '-fspecialise'; next arg; };
3106 /^-fno-speciali[sz]e$/
3107 && do { $Oopt_DoSpecialise = ''; next arg; };
3109 /^-fcompiling-prelude$/ && do { push(@HsC_flags, $_); next arg; };
3111 # Now the foldr/build options, which are *on* by default (for -O).
3114 && do { $Oopt_FoldrBuild = 1;
3115 $Oopt_FB_Support = '-fdo-arity-expand';
3119 /^-fno-foldr-build$/
3120 && do { $Oopt_FoldrBuild = 0;
3121 $Oopt_FB_Support = '';
3124 /^-fno-foldr-build-rule$/
3125 && do { $Oopt_FoldrBuild = 0;
3128 /^-fno-enable-tech$/
3129 && do { $Oopt_FB_Support = '';
3132 /^-fno-snapback-to-append$/
3133 && do { $Oopt_FoldrBuildInline .= ' -fdo-not-fold-back-append ';
3136 # --------------- Renamer -------------
3139 /^-fno-prune-tydecls$/ && do { push(@HsC_flags, $_); next arg; };
3140 /^-fno-prune-instdecls$/ && do { push(@HsC_flags, $_); next arg; };
3144 /^-fasm-(.*)$/ && do { $HscOut = '-S='; next arg; }; # force using nativeGen
3145 /^-fvia-[cC]$/ && do { $HscOut = '-C='; next arg; }; # force using C compiler
3150 && do { push(@HsC_flags, $_); next arg };
3152 /^-funfold-casms-in-hi-file$/
3153 && do { push(@HsC_flags, $_); next arg };
3155 /^(-fmax-simplifier-iterations)(.*)$/
3156 && do { $Oopt_MaxSimplifierIterations = $1 . &grab_arg_arg(*Args,$1, $2);
3159 /^-fno-pedantic-bottoms$/
3160 && do { $Oopt_PedanticBottoms = ''; next arg; };
3162 /^-fno-pre-inlining$/
3163 && do { push(@HsC_flags, $_); next arg };
3165 /^-fdo-monad-eta-expansion$/
3166 && do { $Oopt_MonadEtaExpansion = $_; next arg; };
3168 /^-fno-let-from-(case|app|strict-let)$/ # experimental, really (WDP 95/10)
3169 && do { push(@HsC_flags, $_); next arg; };
3171 /^-funbox-strict-fields$/
3172 && do { push(@HsC_flags, $_); next arg; };
3174 # --------------- Warnings etc. ------
3176 /^-fwarn-(.*)$/ && do { push(@HsC_flags, $_); next arg; };
3178 /^-fno-(.*)$/ && do { push(@HsC_antiflags, "-f$1");
3179 &squashHscFlag("-f$1");
3182 /^-W$/ && do { push(@HsC_flags, @MinusWOpts); next arg; };
3183 /^-Wall$/ && do { push(@HsC_flags, @MinusWallOpts); next arg; };
3184 /^(-Wnot|w)$/ && do { foreach (@Hsc_flags) {
3185 /^-fwarn-(.*)$/ && do { $_=''; };
3187 push(@HsC_antiflags, @StandardWarnings);
3190 # --------------- fun stuff ----------------
3192 /^-freport-compile$/ && do { push(@HsC_flags, $_); next arg; };
3194 # --------------- platform specific flags (for gcc mostly) ----------------
3196 /^-mlong-calls$/ && do { # for GCC for HP-PA boxes,
3197 # for 2.6.x..?, does not apply for 2.7.2
3199 unshift(@CcBoth_flags, ( $_ ));
3202 /^-m(v8|sparclite|cypress|supersparc|cpu=(cypress|supersparc))$/
3203 && do { # for GCC for SPARCs
3204 unshift(@CcBoth_flags, ( $_ ));
3207 /^-monly-([432])-regs/ && do { # for iX86 boxes only; no effect otherwise
3208 $StolenX86Regs = $1;
3211 #*************** ... and lots of debugging ones (form: -d* )
3213 # -d(no-)core-lint is done this way so it is turn-off-able.
3214 /^-dcore-lint/ && do { $CoreLint = '-dcore-lint'; next arg; };
3215 /^-dno-core-lint/ && do { $CoreLint = ''; next arg; };
3216 # Ditto for STG lint
3217 /^-dstg-lint/ && do { $StgLint = '-dstg-lint'; next arg; };
3218 /^-dno-stg-lint/ && do { $StgLint = ''; next arg; };
3220 /^-d(dump|ppr)-/ && do { push(@HsC_flags, $_); next arg; };
3221 /^-dverbose-(simpl|stg)/ && do { push(@HsC_flags, $_); next arg; };
3222 /^-dshow-passes/ && do { push(@HsC_flags, $_); next arg; };
3223 /^-dshow-rn-stats/ && do { push(@HsC_flags, $_); next arg; };
3224 /^-dshow-rn-trace/ && do { push(@HsC_flags, $_); next arg; };
3225 /^-dsource-stats/ && do { push(@HsC_flags, $_); next arg; };
3226 /^-dsimplifier-stats/ && do { push(@HsC_flags, $_); next arg; };
3227 /^-dstg-stats/ && do { $Oopt_StgStats = $_; next arg; };
3229 #*************** ... and now all these -R* ones for its runtime system...
3231 /^-Rscale-sizes?(.*)/ && do {
3232 $Scale_sizes_by = &grab_arg_arg(*Args,'-Rscale-sizes', $1);
3235 /^(-H|-Rmax-heapsize)(.*)/ && do {
3236 local($heap_size) = &grab_arg_arg(*Args,$1, $2);
3237 if ($heap_size =~ /(\d+)[Kk]$/) {
3238 $heap_size = $1 * 1000;
3239 } elsif ($heap_size =~ /(\d+)[Mm]$/) {
3240 $heap_size = $1 * 1000 * 1000;
3241 } elsif ($heap_size =~ /(\d+)[Gg]$/) {
3242 $heap_size = $1 * 1000 * 1000 * 1000;
3244 if ($heap_size <= 0) {
3245 print STDERR "$Pgm: resetting heap-size to zero!!! $heap_size\n";
3246 $Specific_heap_size = 0;
3248 # if several heap sizes given, take the largest...
3249 } elsif ($heap_size >= $Specific_heap_size) {
3250 $Specific_heap_size = $heap_size;
3252 print STDERR "$Pgm: ignoring heap-size-setting option ($_)...not the largest seen\n";
3256 /^(-K|Rmax-(stk|stack)size)(.*)/ && do {
3258 local($stk_size) = &grab_arg_arg(*Args,'-Rmax-stksize', $3);
3259 if ($stk_size =~ /(\d+)[Kk]$/) {
3260 $stk_size = $1 * 1000;
3261 } elsif ($stk_size =~ /(\d+)[Mm]$/) {
3262 $stk_size = $1 * 1000 * 1000;
3263 } elsif ($stk_size =~ /(\d+)[Gg]$/) {
3264 $stk_size = $1 * 1000 * 1000 * 1000;
3266 if ($stk_size <= 0) {
3267 print STDERR "$Pgm: resetting stack-size to zero!!! $stk_size\n";
3268 $Specific_stk_size = 0;
3270 # if several stack sizes given, take the largest...
3271 } elsif ($stk_size >= $Specific_stk_size) {
3272 $Specific_stk_size = $stk_size;
3274 print STDERR "$Pgm: ignoring stack-size-setting option ($flag $stk_size)...not the largest seen\n";
3278 /^-Rgc-stats$/ && do { $CollectingGCstats++;
3279 # the two RTSs do this diff ways; we will try to compensate
3282 /^-Rghc-timing/ && do { $CollectGhcTimings = 1; next arg; };
3284 #---------- C high-level assembler (gcc) -------------------------------
3285 /^-(Wall|ansi|pedantic)$/ && do { push(@CcBoth_flags, $_); next arg; };
3287 # -dgcc-lint is a useful way of making GCC very fussy.
3288 # From alan@spri.levels.unisa.edu.au (Alan Modra).
3289 /^-dgcc-lint$/ && do { push(@CcBoth_flags, '-Wall -Wpointer-arith -Wbad-function-cast -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -Wnested-externs'); next arg; };
3290 # An alternate set, from mark@sgcs.com (Mark W. Snitily)
3291 # -Wall -Wstrict-prototypes -Wmissing-prototypes -Wcast-align -Wshadow
3293 # inject "#include <wurble>" into the compiler's C output!
3295 /^-#include(.*)/ && do {
3296 local($to_include) = &grab_arg_arg(*Args,'-#include', $1);
3297 push(@CcInjects, "#include $to_include\n");
3300 #---------- Linker (gcc, really) ---------------------------------------
3302 /^-static$/ && do { $Static=1; push(@Ld_flags, $_); next arg; };
3303 /^-no-hs-main$/ && do { $NoHaskellMain=1; next arg; };
3305 #---------- mixed cc and linker magic ----------------------------------
3306 # this optimisation stuff is finally sorted out later on...
3308 /^-O2-for-C$/ && do { $MinusO2ForC = 1; next arg; };
3310 /^-O[1-2]?$/ && do {
3311 local($opt_lev) = ( /^-O2$/ ) ? 2 : 1; # max 'em
3312 $OptLevel = ( $opt_lev > $OptLevel ) ? $opt_lev : $OptLevel;
3314 $HscOut = '-C=' if $OptLevel == 2; # force use of C compiler
3317 /^-Onot$/ && do { $OptLevel = 0; next arg; }; # # set it to <no opt>
3319 /^-Ofile(.*)/ && do {
3321 local($ofile) = &grab_arg_arg(*Args,'-Ofile', $1);
3322 @HsC_minusO3_flags = ();
3324 open(OFILE, "< $ofile") || die "Can't open $ofile!\n";
3327 s/\#.*//; # death to comments
3328 s/[ \t]+//g; # death to whitespace
3329 next if /^$/; # ditto, blank lines
3330 s/([()*{}])/\\$1/g; # protect shell metacharacters
3332 push(@CcBoth_flags, $1);
3334 push(@HsC_minusO3_flags, $_);
3340 /^-debug$/ && do { # all this does is mark a .hc/.o as "debugging"
3341 # in the consistency info
3345 #---------- linking .a file --------------------------------------------
3347 /^-Main(.*)/ && do {
3348 # specifies main or mainPrimIO to be linked
3352 #---------- catch unrecognized flags -----------------------------------
3355 print STDERR "$Pgm: unrecognised option: $_\n";
3361 } # end of processArgs