2 % (c) The GRASP/AQUA Project, Glasgow University, 1992-1997
5 This is the driver script for the Glasgow Haskell compilation system.
6 It is written in \tr{perl}. The first section includes a long
7 ``usage'' message that describes how the driver is supposed to work.
9 %************************************************************************
11 \section[Driver-usage]{Usage message}
13 %************************************************************************
16 ($Pgm = $0) =~ s|.*/||;
17 $ShortUsage = "\nUsage: For basic information, try the `-help' option.\n";
18 $LongUsage = "\n" . <<EOUSAGE;
19 Use of the Glorious Haskell Compilation System driver:
21 $Pgm [command-line-options-and-input-files]
23 ------------------------------------------------------------------------
24 This driver ($Pgm) guides each input file through (some of the)
25 possible phases of a compilation:
27 - unlit: extract code from a "literate program"
28 - hscpp: run code through the C pre-processor (if -cpp flag given)
29 - hsc: run the Haskell compiler proper
30 - gcc: run the C compiler (if compiling via C)
31 - as: run the assembler
34 For each input file, the phase to START with is determined by the
36 - .lhs literate Haskell: unlit
37 - .hs illiterate Haskell: hsc
38 - .hc C from the Haskell compiler: gcc
39 - .c C not from the Haskell compiler: gcc
40 - .s assembly language: as
41 - other passed directly to the linker: ld
43 If no files are given on the command line, input is taken from
44 standard input, and processing is as for an .hs file. (All output is
45 to stdout or stderr, however).
47 The phase at which to STOP processing is determined by a command-line
49 -E stop after generating preprocessed, de-litted Haskell (used in conjunction with -cpp)
50 -C stop after generating C (.hc output)
51 -S stop after generating assembler (.s output)
52 -c stop after generating object files (.o output)
54 Other commonly-used options are:
56 -O An `optimising' package of compiler flags, for faster code
58 -prof Compile for cost-centre profiling
59 (add -auto for automagic cost-centres on top-level functions)
61 -fglasgow-exts Allow Glasgow extensions (unboxed types, etc.)
63 -H14m Increase compiler's heap size
65 -M Output the Makefile rules recording the
66 dependencies of a list of Haskell files.
67 (ghc driver script calls upon the help of a
68 compatible mkdependHS script to do the actual
71 The User's Guide has more information about GHC's *many* options.
73 Given the above, here are some TYPICAL invocations of $Pgm:
75 # compile a Haskell module to a .o file, optimising:
77 # link three .o files into an executable called "test":
78 % $Pgm -o test Foo.o Bar.o Baz.o
79 # compile a Haskell module to C (a .hc file), using a bigger heap:
80 % $Pgm -C -H16m Foo.hs
81 # compile Haskell-produced C (.hc) to assembly language:
83 ------------------------------------------------------------------------
87 %************************************************************************
89 \section[Driver-init]{Initialisation}
91 %************************************************************************
93 The driver script need to be told where to find these executables, so
94 in the course of building the driver `executable', make-variables holding
95 these are prepended to the de-litted version of this file. The variables are:
100 HOSTPLATFORM TARGETPLATFORM
102 ProjectName ProjectVersion ProjectVersionInt ProjectPatchLevel
104 HscMajorVersion HscMinorVersion CcMajorVersion CcMinorVersion
108 bindir libdir libexecdir datadir
112 GHC_LIB_DIR GHC_RUNTIME_DIR GHC_UTILS_DIR GHC_INCLUDE_DIR
114 GHC_OPT_HILEV_ASM GhcWithNativeCodeGen
116 GHC_UNLIT GHC_HSCPP GHC_HSC GHC_SYSMAN
120 WAY_*_NAME WAY_*_HC_OPTS
126 Establish what executables to run for the various phases, what the
127 default options are for those phases, and other similar boring stuff.
130 select(STDERR); $| = 1; select(STDOUT); # no STDERR buffering, please.
132 $TargetPlatform = $TARGETPLATFORM;
134 $TopPwd = "${TOP_PWD}";
135 $InstBinDirGhc = "${bindir}";
136 $InstLibDirGhc = "${libdir}";
138 # Normally the same as InstLibDirGhc, but we accommodate
139 # for it being separate.
141 $InstLibExecDirGhc = "${libexecdir}";
142 $InstDataDirGhc = "${datadir}";
144 $Status = 0; # just used for exit() status
147 # set up signal handler
148 sub quit_upon_signal { &tidy_up_and_die(1, ''); }
149 $SIG{'INT'} = 'quit_upon_signal';
150 $SIG{'QUIT'} = 'quit_upon_signal';
152 # where to get "require"d .prl files at runtime (poor man's dynamic loading)
153 # (use LIB, not DATA, because we can't be sure of arch-independence)
154 @INC = ( ( $INSTALLING ) ? $InstLibDirGhc
155 : "$TopPwd/${CURRENT_DIR}" );
157 if ( $ENV{'TMPDIR'} ) { # where to make tmp file names
158 $Tmp_prefix = ($ENV{'TMPDIR'} . "/ghc$$");
160 print STDERR "TMPDIR has not been set to anything useful!\n" if (${TMPDIR} eq '');
161 $Tmp_prefix ="${TMPDIR}/ghc$$"; # TMPDIR set via Makefile when booting..
162 $ENV{'TMPDIR'} = ${TMPDIR}; # set the env var as well
165 # Some shells run into real trouble when command line and environment
166 # gets big (e.g., cmd lines of >4K to /bin/sh causes havoc on our
167 # Solaris-2.5.1 boxes - even though sysconf(_SC_ARG_MAX) reports 1M ...).
168 # To work around any such */bin/sh* problems, we will scribble such
169 # awfully long command lines into a temp file and exec that temp file
170 # with $(REAL_SHELL) (don't use the SHELL variable directly as this
171 # will normally get you the wrong thing when the driver is invoked
172 # from within `make'). If the REAL_SHELL variable isn't set, you'll
173 # get SHELL. This is all a terrible hack. (in case you hadn't reached
174 # the same conclusion by now :-)
178 if ( ! $ENV{'REAL_SHELL'} ) {
179 $ENV{'REAL_SHELL'} = $ENV{'SHELL'};
182 @Files_to_tidy = (); # files we nuke in the case of abnormal termination
184 $Unlit = ( $INSTALLING ) ? "$InstLibExecDirGhc/unlit"
185 : "$TopPwd/${CURRENT_DIR}/${GHC_UNLIT}";
189 $Diff = $CONTEXT_DIFF;
194 $HsCpp = # but this is re-set to "cat" (after options) if -cpp not seen
195 ( $INSTALLING ) ? "$InstLibExecDirGhc/hscpp"
196 : "$TopPwd/${CURRENT_DIR}/${GHC_HSCPP}";
199 $HsC = ( $INSTALLING ) ? "$InstLibExecDirGhc/hsc"
200 : "$TopPwd/${CURRENT_DIR}/${GHC_HSC}";
202 # For PVM fiends only
203 $SysMan = ( $INSTALLING ) ? "$InstLibExecDirGhc/SysMan"
204 : "$TopPwd/${CURRENT_DIR}/${GHC_SYSMAN}";
209 # HsC_rts_flags: if we want to talk to the LML runtime system
210 # NB: we don't use powers-of-2 sizes, because this may do
211 # terrible things to cache behavior.
213 $Specific_heap_size = 6 * 1000 * 1000;
214 $Specific_stk_size = 1000 * 1000;
215 $Scale_sizes_by = 1.0;
219 The variables set by @setupOptFlags@ represent parts of the
220 -O/-O2/etc ``templates,'' which are filled in later, using these.
221 These are the default values, which may be changed by user flags.
225 $Oopt_MaxSimplifierIterations = '-fmax-simplifier-iterations4';
226 $Oopt_PedanticBottoms = '-fpedantic-bottoms'; # ON by default
227 $Oopt_MonadEtaExpansion = '';
228 $Oopt_FinalStgProfilingMassage = '';
230 $Oopt_SpecialiseUnboxed = '';
231 $Oopt_DoSpecialise = '-fspecialise';
232 $Oopt_FoldrBuild = 0; # *Off* by default!
233 $Oopt_FB_Support = ''; # was '-fdo-arity-expand';
234 # $Oopt_FoldrBuildWW = 0; # Off by default
235 $Oopt_FoldrBuildInline = ''; # was '-fdo-inline-foldr-build';
236 $Oopt_ShowSimplifierProgress = '';
237 } # end of setupOptFlags
239 # Assign defaults to these right away.
243 Things to do with C compilers/etc:
245 $CcRegd = $GHC_OPT_HILEV_ASM;
246 @CcBoth_flags = ('-S'); # flags for *any* C compilation
250 # those for all files,
251 # those only for .c files;
252 # those only for .hc files
254 @CcRegd_flags = ('-ansi', '-D__STG_GCC_REGS__', '-D__STG_TAILJUMPS__');
255 @CcRegd_flags_c = ();
256 @CcRegd_flags_hc = ();
258 $As = ''; # "assembler" is normally GCC
261 $Lnkr = ''; # "linker" is normally GCC
264 # 'nm' is used for consistency checking (ToDo: mk-world-ify)
265 # ToDo: check the OS or something ("alpha" is surely not the crucial question)
266 $Nm = ($TargetPlatform =~ /^alpha-/) ? 'nm -B' : 'nm';
269 Warning packages that are controlled by -W and -Wall. The 'standard'
270 warnings that you get all the time are
272 -fwarn-overlapping-patterns
273 -fwarn-missing-methods
274 -fwarn-duplicate-exports
276 these are turned off by -Wnot.
279 @StandardWarnings = ('-fwarn-overlapping-patterns',
280 '-fwarn-missing-methods',
281 '-fwarn-duplicate-exports');
282 @MinusWOpts = (@StandardWarnings,
283 '-fwarn-incomplete-patterns',
284 '-fwarn-unused-binds',
285 '-fwarn-unused-imports');
286 @MinusWallOpts = (@MinusWOpts,
287 '-fwarn-unused-matches',
288 '-fwarn-name-shadowing');
291 What options \tr{-user-setup-a} turn into (user-defined ``packages''
293 of options). Note that a particular user-setup implies a particular
294 Prelude ({\em including} its interface file(s)).
296 $BuildTag = ''; # default is sequential build w/ Appel-style GC
298 %BuildDescr = (# system ways begin
299 '', 'normal sequential',
303 '_mc', "$WAY_mc_NAME",
304 '_mr', "$WAY_mr_NAME",
305 '_mt', "$WAY_mt_NAME",
306 '_mp', "$WAY_mp_NAME",
307 '_mg', "$WAY_mg_NAME",
308 '_2s', "$WAY_2s_NAME",
309 '_1s', "$WAY_1s_NAME",
310 '_du', "$WAY_du_NAME",
328 '_B', "$WAY_B_NAME" );
330 # these are options that are "fed back" through the option processing loop
334 '_a', "$WAY_a_HC_OPTS",
335 '_b', "$WAY_b_HC_OPTS",
336 '_c', "$WAY_c_HC_OPTS",
337 '_d', "$WAY_d_HC_OPTS",
338 '_e', "$WAY_e_HC_OPTS",
339 '_f', "$WAY_f_HC_OPTS",
340 '_g', "$WAY_g_HC_OPTS",
341 '_h', "$WAY_h_HC_OPTS",
342 '_i', "$WAY_i_HC_OPTS",
343 '_j', "$WAY_j_HC_OPTS",
344 '_k', "$WAY_k_HC_OPTS",
345 '_l', "$WAY_l_HC_OPTS",
346 '_m', "$WAY_m_HC_OPTS",
347 '_n', "$WAY_n_HC_OPTS",
348 '_o', "$WAY_o_HC_OPTS",
349 '_A', "$WAY_A_HC_OPTS",
350 '_B', "$WAY_B_HC_OPTS",
353 '_p', "$WAY_p_HC_OPTS",
354 '_t', "$WAY_t_HC_OPTS",
355 '_u', "$WAY_u_HC_OPTS",
356 '_mc', "$WAY_mc_HC_OPTS",
357 '_mr', "$WAY_mr_HC_OPTS",
358 '_mt', "$WAY_mt_HC_OPTS",
359 '_mp', "$WAY_mp_HC_OPTS",
360 '_mg', "$WAY_mg_HC_OPTS",
361 '_2s', "$WAY_2s_HC_OPTS",
362 '_1s', "$WAY_1s_HC_OPTS",
363 '_du', "$WAY_B_HC_OPTS" );
367 Import/include directories (\tr{-I} options) are sufficiently weird to
368 require special handling.
371 @Import_dir = ('.'); #-i things
372 @Include_dir = ('.'); #-I things; other default(s) stuck on AFTER option processing
374 # where to look for interface files (system hi's, i.e., prelude and syslibs)
375 @SysImport_dir = ( $INSTALLING )
376 ? ( "$InstLibDirGhc/imports/std" )
377 : ( "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/std" );
379 # We need to look in ghc/ and glaExts/ when searching for implicitly needed .hi files, but
380 # we should really *not* look there for explicitly imported modules.
382 $Haskell1Version = 4; # i.e., Haskell 1.4
385 @UserLibrary_dir= (); #-L things;...
386 @UserLibrary = (); #-l things asked for by the user
388 @SysLibrary_dir = ( ( $INSTALLING ) #-syslib things supplied by the system
390 : ( "$TopPwd/$CURRENT_DIR/$GHC_RUNTIME_DIR"
391 , "$TopPwd/$CURRENT_DIR/$GHC_RUNTIME_DIR/gmp"
392 , "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/std"
393 , "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/std/cbits"
396 @SysLibrary = (); # will be built up as we go along
398 $TopClosureFile # defaults to 1.2 one; will be mangled later
399 = ( $INSTALLING) ? "$InstLibDirGhc/TopClosureXXXX.o"
400 : "$TopPwd/$CURRENT_DIR/$GHC_RUNTIME_DIR/main/TopClosureXXXX.o";
402 # make depend for Haskell
404 = ( $INSTALLING ) ? "$InstBinDirGhc/mkdependHS"
405 : "$TopPwd/$CURRENT_DIR/$GHC_UTILS_DIR/mkdependHS/mkdependHS";
407 @MkDependHS_flags = ();
409 # do_link flag should not be reset while rescanning the cmd-line.
411 $Specific_output_dir = ''; # set by -odir <dir>
412 $Specific_output_file = ''; # set by -o <file>; "-" for stdout
415 Function to initialise the per-compilation-unit globals that
416 are used to guide and control the invocation of the different phases.
419 sub initDriverGlobals {
421 # reset the following options:
422 # RTS flags to use while compiling
424 @HsP_flags = (); # these are the flags destined solely for
425 # the flex/yacc parser
430 The optimisations/etc to be done by the compiler are {\em normally}
431 expressed with a \tr{-O} (or \tr{-O2}) flag, or by its absence.
434 $OptLevel = 0; # no -O == 0; -O == 1; -O2 == 2; -Ofile == 3
435 $MinusO2ForC = 0; # set to 1 if -O2 should be given to C compiler
436 $StolenX86Regs = 4; # **HACK*** of the very worst sort
440 @CcBoth_flags = ('-S'); # flags for *any* C compilation
443 # GCC flags: those for all files, those only for .c files; those only for .hc files
444 @CcRegd_flags = ('-ansi', '-D__STG_GCC_REGS__', '-D__STG_TAILJUMPS__');
445 @CcRegd_flags_c = ();
446 @CcRegd_flags_hc = ();
448 @Import_dir = ('.'); #-i things
449 @Include_dir = ('.'); #-I things; other default(s) stuck on AFTER option processing
454 We are given a list of files with various presumably-known suffixes
455 (unknown-suffix files go straight to the linker). For each file, we
456 begin by assuming that we'll run every phase over it. However: (1)
457 global flags (\tr{-c}, \tr{-S}, etc.) tell us not to run any phase
458 past a certain point; and (2) the file's suffix tells us what phase to
459 start with. Linking is weird and kept track of separately.
461 Here are the initial defaults applied to all files:
463 $Cpp_flag_set = 0; # (hack)
464 $Only_preprocess_C = 0; # pretty hackish
465 $Only_preprocess_hc = 0; # ditto
466 $Only_generate_deps = 0; # "
467 $PostprocessCcOutput = 0;
469 # native code-gen or via C?
470 $HaveNativeCodeGen = $GhcWithNativeCodeGen;
471 $HscOut = '-C='; # '-C=' ==> .hc output; '-S=' ==> .s output; '-N=' ==> neither
473 if $HaveNativeCodeGen && $TargetPlatform =~ /^(alpha|sparc)-/;
474 # TEMP: disable x86 if $HaveNativeCodeGen && $TargetPlatform =~ /^(i386|alpha|sparc)-/;
475 $ProduceHi = '-hifile=';
481 $CollectingGCstats = 0;
482 $CollectGhcTimings = 0;
483 $DEBUGging = ''; # -DDEBUG and all that it entails (um... not really)
484 $PROFing = ''; # set to p or e if profiling
485 $PROFgroup = ''; # set to group if an explicit -Ggroup specified
486 $PROFauto = ''; # set to relevant hsc flag if -auto or -auto-all
487 $PROFcaf = ''; # set to relevant hsc flag if -caf-all
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 $CONCURing = ''; # set to c if compiling for CONCURRENT
493 $GRANing = ''; # set to g if compiling for GRAN
494 $StkChkByPageFaultOK = 1; # may be set to 0 (false) for some builds
495 $Specific_hi_file = ''; # set by -ohi <file>; "-" for stdout
496 $Specific_dump_file = ''; # set by -odump <file>; "-" for stdout
497 $Using_dump_file = 0;
499 $Osuffix = ''; # default: use the normal suffix for that kind of output
501 $HiSuffix_prelude = '';
502 $Do_recomp_chkr = 0; # don't use the recompilatio checker unless asked
503 $Do_cc = -1; # a MAGIC indeterminate value; will be set to 1 or 0.
506 $Keep_hc_file_too = 0;
507 $Keep_s_file_too = 0;
508 $UseGhcInternals = 0; # if 1, may use GHC* modules
511 $Dump_parser_output = 0;
513 $Dump_asm_splitting_info = 0;
514 $NoImplicitPrelude = 0;
517 } # end of initDriverGlobals (Sigh)
519 # we split the argv passed to the driver into three:
524 # and files to be linked...
530 # cmd line options prefixing the unit we're compiling
535 We inject consistency-checking information into \tr{.hc} files (both
536 when created by the Haskell compiler and when compiled by the C
537 compiler), so that we can check that an executable is made from
538 consistently-built pieces. (The check is normally done just after
539 linking.) The checking is done by introducing/munging
540 \tr{what(1)}-style strings. Anyway, here are the relevant global
541 variables and their defaults:
543 $LinkChk = 1; # set to 0 if the link check should *not* be done
545 # major & minor version numbers; major numbers must always agree;
546 # minor disagreements yield a warning.
547 $HsC_major_version = $HscMajorVersion;
548 $HsC_minor_version = $HscMinorVersion;
549 $Cc_major_version = $CcMajorVersion;
550 $Cc_minor_version = $CcMinorVersion;
552 # options: these must always agree
553 $HsC_consist_options = ''; # we record, in this order:
554 # Build tag; debugging?
555 $Cc_consist_options = ''; # we record, in this order:
556 # Build tag; debugging?
559 %************************************************************************
561 \section[Driver-parse-argv]{Munge the command-line options}
563 %************************************************************************
565 Now slurp through the arguments.
568 &initDriverGlobals();
569 &splitCmdLine(@ARGV);
570 # Run through the cmd-line first time.
571 &processArgs(@Cmd_opts);
573 # Check to see if driver is only in the business
574 # to generate dependencies
575 if ( $Status == 0 && $Only_generate_deps ) {
577 push (@MkDependHS_flags, "-o$Osuffix") if $Osuffix;
578 push (@MkDependHS_flags, "-s$BuildTag") if $BuildTag;
579 push (@MkDependHS_flags, "-D__HASKELL1__=$Haskell1Version");
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 -- @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.
719 $Oopt_MaxSimplifierIterations,
720 $Oopt_ShowSimplifierProgress,
723 # '-ffull-laziness', # removed 95/04 WDP following Andr\'e's lead
725 $Oopt_FinalStgProfilingMassage
728 @HsC_minusO_flags # NOTE: used for *both* -O and -O2 (some conditional bits)
730 '-fdo-eta-reduction',
732 # initial simplify: mk specialiser happy: minimum effort please
736 '-fkeep-spec-pragma-ids', # required before specialisation
738 # I don't understand why we want -fessential-unfoldings-only here
739 # If we have it, the following nasty thing happens:
743 # where "*" means exported.
744 # In the essential-unfoldings pass we still substitute f for g
745 # but we don't substitute E for f first. So we get
749 # The g=f will get reverse-substituted later, but it's untidy.
751 # '-fessential-unfoldings-only',
752 # '-fsimpl-uf-use-threshold0',
754 # See remark re: cloning in defn of minusnotO
757 '-fmax-simplifier-iterations1',
758 $Oopt_PedanticBottoms,
761 ($Oopt_DoSpecialise) ? (
762 '-fspecialise-overloaded',
763 $Oopt_SpecialiseUnboxed,
767 '-fsimplify', # need dependency anal after specialiser ...
768 '[', # need tossing before calc-inlinings ...
770 '-ffloat-lets-exposing-whnf',
771 '-ffloat-primops-ok',
775 # '-fdo-eta-reduction',
776 '-fdo-lambda-eta-expansion',
778 $Oopt_PedanticBottoms,
779 $Oopt_MonadEtaExpansion,
780 $Oopt_MaxSimplifierIterations,
781 $Oopt_ShowSimplifierProgress,
783 # The presence of -fclone-binds is *crucial* here as
784 # -ffull-laziness (which we're about to do next) floats
785 # bindings outwards, so we better make sure that this
786 # doesn't result in the floating out of bindings
787 # with identical uniques, i.e., -ffull-laziness needs
788 # to be preceeded by a simplifier pass with -fclone-binds
793 #LATER: '-fcalc-inlinings1', -- pointless for 2.01
795 # ($Oopt_FoldrBuildWW) ? (
796 # '-ffoldr-build-ww-anal',
797 # '-ffoldr-build-worker-wrapper',
801 # '-ffloat-lets-exposing-whnf',
802 # '-ffloat-primops-ok',
806 # '-fdo-eta-reduction',
807 # '-fdo-lambda-eta-expansion',
809 # $Oopt_PedanticBottoms,
810 # $Oopt_MonadEtaExpansion,
811 # $Oopt_MaxSimplifierIterations,
812 # $Oopt_ShowSimplifierProgress,
816 # this pass-ordering sequence was agreed by Simon and Andr\'e
817 # (WDP 94/07, 94/11).
820 ($Oopt_FoldrBuild) ? (
821 '-ffoldr-build-on', # desugar list comprehensions for foldr/build
825 '-fignore-inline-pragma', # **** NB!
826 '-fdo-foldr-build', # NB
828 '-ffloat-lets-exposing-whnf',
829 '-ffloat-primops-ok',
833 # '-fdo-eta-reduction',
834 '-fdo-lambda-eta-expansion', # After full laziness
836 $Oopt_PedanticBottoms,
837 $Oopt_MonadEtaExpansion,
838 $Oopt_MaxSimplifierIterations,
839 $Oopt_ShowSimplifierProgress,
848 '-ffloat-lets-exposing-whnf',
849 '-ffloat-primops-ok',
853 '-fdo-eta-reduction',
854 '-fdo-lambda-eta-expansion',
856 ($Oopt_FoldrBuildInline),
857 # you need to inline foldr and build
858 ($Oopt_FoldrBuild) ? ('-fdo-foldr-build') : (),
859 # but do reductions if you see them!
860 $Oopt_PedanticBottoms,
861 $Oopt_MonadEtaExpansion,
862 $Oopt_MaxSimplifierIterations,
863 $Oopt_ShowSimplifierProgress,
871 '-ffloat-lets-exposing-whnf',
872 '-ffloat-primops-ok',
876 # '-fdo-eta-reduction',
877 '-fdo-lambda-eta-expansion',
879 '-flet-to-case', # Aha! Only done after strictness analysis
880 $Oopt_PedanticBottoms,
881 $Oopt_MonadEtaExpansion,
882 $Oopt_MaxSimplifierIterations,
883 $Oopt_ShowSimplifierProgress,
888 # Case-liberation for -O2. This should be after
889 # strictness analysis and the simplification which follows it.
893 # : "-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 ]" ),
895 # Final clean-up simplification:
900 '-ffloat-lets-exposing-whnf',
901 '-ffloat-primops-ok',
905 # '-fdo-eta-reduction',
906 '-fdo-lambda-eta-expansion',
909 '-fignore-inline-pragma', # **** NB!
910 $Oopt_FoldrBuildInline,
911 ($Oopt_FoldrBuild) ? ('-fdo-foldr-build') : (),
912 # but still do reductions if you see them!
913 $Oopt_PedanticBottoms,
914 $Oopt_MonadEtaExpansion,
915 $Oopt_MaxSimplifierIterations,
916 $Oopt_ShowSimplifierProgress,
921 #LATER: '-fcalc-inlinings2', -- pointless for 2.01
925 $Oopt_FinalStgProfilingMassage,
931 # SPECIAL FLAGS for -O2
933 '-fupdate-analysis', # virtually useless; relegated to -O2
940 Sort out what we're going to do about optimising. First, the @hsc@
941 flags and regular @cc@ flags to worry about:
943 if ( $OptLevel <= 0 ) {
945 # for this level, we tell the parser -fignore-interface-pragmas
946 push(@HsC_flags, '-fignore-interface-pragmas');
947 # and tell the compiler not to produce them
948 push(@HsC_flags, '-fomit-interface-pragmas');
950 &add_Hsc_flags( @HsC_minusNoO_flags );
951 push(@CcBoth_flags, ($MinusO2ForC) ? '-O2' : '-O'); # not optional!
953 } elsif ( $OptLevel == 1 || $OptLevel == 2 ) {
955 &add_Hsc_flags( @HsC_minusO_flags );
956 push(@CcBoth_flags, ($MinusO2ForC || $OptLevel == 2) ? '-O2' : '-O'); # not optional!
957 # -O? to GCC is not optional! -O2 probably isn't worth it generally,
958 # but it *is* useful in compiling the garbage collectors (so said
959 # Patrick many moons ago...).
961 } else { # -Ofile, then...
963 &add_Hsc_flags( @HsC_minusO3_flags );
964 push(@HsC_flags, $Oopt_FinalStgProfilingMassage) if $Oopt_FinalStgProfilingMassage;
966 push(@CcBoth_flags, ($MinusO2ForC) ? '-O2' : '-O'); # possibly to be elaborated...
969 } # setupOptimiseFlags
973 %************************************************************************
975 \subsection{Check for consistency, etc.}
977 %************************************************************************
979 Sort out @$BuildTag@, @$PROFing@, @$CONCURing@, @$PARing@,
980 @$GRANing@, @$TICKYing@:
982 sub setupBuildFlags {
985 # PROFILING stuff after argv mangling:
987 # warn about any scc exprs found (in case scc used as identifier)
988 push(@HsP_flags, '-W');
990 # add -auto sccs even if not profiling !
991 push(@HsC_flags, $UNPROFscc_auto) if $UNPROFscc_auto;
994 push(@HsC_flags, $PROFauto) if $PROFauto;
995 push(@HsC_flags, $PROFcaf) if $PROFcaf;
996 #push(@HsC_flags, $PROFdict) if $PROFdict;
998 $Oopt_FinalStgProfilingMassage = '-fmassage-stg-for-profiling';
1000 # Ignore user sccs when auto annotating, but warn when doing so.
1001 $PROFignore_scc = '-W' if $PROFauto;
1003 push(@HsP_flags, (($PROFignore_scc) ? $PROFignore_scc : '-S'));
1005 if ( $SplitObjFiles ) {
1006 # can't split with cost centres -- would need global and externs
1007 print STDERR "$Pgm: WARNING: splitting objects when profiling will *BREAK* if any _scc_s are present!\n";
1008 # (but it's fine if there aren't any _scc_s around...)
1009 # $SplitObjFiles = 0; # unset
1010 #not an error: for now: $Status++;
1013 #if ( $BuildTag ne '' ) {
1014 # local($b) = $BuildDescr{$BuildTag};
1015 # if ($CONCURing eq 'c') { print STDERR "$Pgm: Can't mix $b with -concurrent.\n"; exit 1; }
1016 # if ($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; }
1028 $BuildTag = ($CONCURing eq 'c') ? '_mr' : '_p' ; # possibly "profiled concurrent"...
1030 } elsif ( $CONCURing eq 'c' ) {
1031 if ($PARing eq 'p') { print STDERR "$Pgm: Can't mix -concurrent with -parallel.\n"; exit 1; }
1032 if ($GRANing eq 'g') { print STDERR "$Pgm: Can't mix -concurrent with -gransim.\n"; exit 1; }
1033 $BuildTag = ($TICKYing eq 't') ? '_mt' : '_mc' ; # possibly "ticky concurrent"...
1034 # "profiled concurrent" already acct'd for...
1036 } elsif ( $PARing eq 'p' ) {
1037 if ($GRANing eq 'g') { print STDERR "$Pgm: Can't mix -parallel with -gransim.\n"; exit 1; }
1038 if ($TICKYing eq 't') { print STDERR "$Pgm: Can't mix -parallel with -ticky.\n"; exit 1; }
1041 if ( $Do_lnkr && ( ! $ENV{'PVM_ROOT'} || ! $ENV{'PVM_ARCH'} )) {
1042 print STDERR "$Pgm: both your PVM_ROOT and PVM_ARCH environment variables must be set for linking under -parallel.\n";
1046 } elsif ( $GRANing eq 'g' ) {
1047 if ($TICKYing eq 't') { print STDERR "$Pgm: Can't mix -gransim with -ticky.\n"; exit 1; }
1050 } elsif ( $TICKYing eq 't' ) {
1056 After the sanity checks, add flags to the necessary parts of the driver pipeline:
1059 if ( $BuildTag ne '' ) { # something other than normal sequential...
1061 local($Tag) = "${BuildTag}";
1062 $Tag =~ s/_//; # move the underscore to the back
1064 $HscOut = '-C='; # must go via C
1065 &processArgs(split(' ', $SetupOpts{$BuildTag}));
1066 # eval($EvaldSetupOpts{$BuildTag});
1070 Decide what the consistency-checking options are in force for this run:
1073 $HsC_consist_options = "${BuildTag},${DEBUGging}";
1074 $Cc_consist_options = "${BuildTag},${DEBUGging}";
1077 # Funny place to put it, but why not.
1079 if ( $HiSuffix_prelude eq '' ) {
1080 local($Tag) = "${BuildTag}";
1082 $Tag = "${Tag}_" if $Tag ne '';
1083 $HiSuffix_prelude="${Tag}hi";
1085 #push(@HsC_flags, "-hisuf-prelude=.${HiSuffix_prelude}"); # use appropriate Prelude .hi files
1086 #push(@HsC_flags, "-hisuf=.${HiSuffix}");
1091 %************************************************************************
1093 \subsection{Add on machine-specific C-compiler flags}
1095 %************************************************************************
1097 Shove on magical machine-specific options. We use \tr{unshift} to
1098 stick them on the {\em front} of the arrays, so that ``later''
1099 user-specified flags can clobber them (e.g., \tr{-U__STG_REV_TBLS__}).
1101 Note: a few ``always apply'' flags were set at the very beginning.
1106 if ($TargetPlatform =~ /^alpha-/) {
1107 # we know how to *mangle* asm for alpha
1108 unshift(@CcRegd_flags, ('-D__STG_REV_TBLS__'));
1109 unshift(@CcRegd_flags, ('-DSTACK_CHECK_BY_PAGE_FAULT=1')) if $StkChkByPageFaultOK;
1110 unshift(@CcBoth_flags, ('-static'));
1112 } elsif ($TargetPlatform =~ /^hppa/) {
1113 # we know how to *mangle* asm for hppa
1114 unshift(@CcRegd_flags, ('-D__STG_REV_TBLS__'));
1115 unshift(@CcBoth_flags, ('-static'));
1117 # We don't put in '-mlong-calls', because it's only
1118 # needed for very big modules (sigh), and we don't want
1119 # to hobble ourselves further on all the other modules
1122 # [Dated comment (gcc-2.6.x?), -mlong-calls is no longer
1123 # a supported gcc HPPA flag]
1124 unshift(@CcBoth_flags, ('-D_HPUX_SOURCE'));
1125 # ___HPUX_SOURCE, not _HPUX_SOURCE, is #defined if -ansi!
1126 # (very nice, but too bad the HP /usr/include files don't agree.)
1128 } elsif ($TargetPlatform =~ /^i386-/) {
1129 # we know how to *mangle* asm for X86
1130 unshift(@CcRegd_flags, ('-D__STG_REV_TBLS__'));
1131 unshift(@CcRegd_flags, ('-DSTACK_CHECK_BY_PAGE_FAULT=1')) if $StkChkByPageFaultOK && $TargetPlatform !~ /nextstep/;
1132 # I do not know how to do STACK_CHECK_BY_PAGE_FAULT
1133 # on NeXTs (my fault, not theirs), so I don't.
1136 # -fno-defer-pop : basically the same game as for m68k
1138 # -fomit-frame-pointer : *must* ; because we're stealing
1139 # the fp (%ebp) for our register maps. *All* register
1140 # maps (in MachRegs.lh) must steal it.
1142 unshift(@CcRegd_flags_hc, '-fno-defer-pop');
1143 unshift(@CcRegd_flags, '-fomit-frame-pointer');
1144 unshift(@CcRegd_flags, "-DSTOLEN_X86_REGS=$StolenX86Regs");
1146 } elsif ($TargetPlatform =~ /^m68k-/) {
1147 # we know how to *mangle* asm for m68k
1148 unshift (@CcRegd_flags, ('-D__STG_REV_TBLS__'));
1149 unshift (@CcRegd_flags, ('-DSTACK_CHECK_BY_PAGE_FAULT=1')) if $StkChkByPageFaultOK && $TargetPlatform !~ /nextstep/;
1150 # I do not know how to do STACK_CHECK_BY_PAGE_FAULT
1151 # on NeXTs (my fault, not theirs), so I don't.
1154 # -fno-defer-pop : for the .hc files, we want all the pushing/
1155 # popping of args to routines to be explicit; if we let things
1156 # be deferred 'til after an STGJUMP, imminent death is certain!
1158 # -fomit-frame-pointer : *don't*
1159 # It's better to have a6 completely tied up being a frame pointer
1160 # rather than let GCC pick random things to do with it.
1161 # (If we want to steal a6, then we would try to do things
1162 # as on iX86, where we *do* steal the frame pointer [%ebp].)
1164 unshift(@CcRegd_flags_hc, '-fno-defer-pop');
1165 unshift(@CcRegd_flags, '-fno-omit-frame-pointer');
1166 # maybe gives reg alloc a better time
1167 # also: -fno-defer-pop is not sufficiently well-behaved without it
1169 } elsif ($TargetPlatform =~ /^mips-/) {
1170 # we (hope to) know how to *mangle* asm for MIPSen
1171 unshift(@CcRegd_flags, ('-D__STG_REV_TBLS__'));
1172 unshift(@CcRegd_flags, ('-DSTACK_CHECK_BY_PAGE_FAULT=1')) if $StkChkByPageFaultOK;
1173 unshift(@CcBoth_flags, ('-static'));
1175 } elsif ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
1176 # we know how to *mangle* asm for PowerPC
1177 # :-( unshift(@CcRegd_flags, ('-D__STG_REV_TBLS__'));
1178 unshift(@CcRegd_flags, ('-DSTACK_CHECK_BY_PAGE_FAULT=1')) if $StkChkByPageFaultOK;
1179 unshift(@CcBoth_flags, ('-static')); # always easier to start with
1180 unshift(@CcRegd_flags, ('-finhibit-size-directive')); # avoids traceback tables
1181 } elsif ($TargetPlatform =~ /^sparc-/) {
1182 # we know how to *mangle* asm for SPARC
1183 unshift(@CcRegd_flags, ('-D__STG_REV_TBLS__'));
1184 unshift(@CcRegd_flags, ('-DSTACK_CHECK_BY_PAGE_FAULT=1')) if $StkChkByPageFaultOK;
1187 } # end of setupMachOpts
1190 %************************************************************************
1192 \subsection{Set up for warnings}
1194 %************************************************************************
1196 Several warnings are turned on by default. These are supposed to be
1197 the 'I'm pretty sure you've made a mistake here' kind of warnings.
1198 The rest are turned on by the -W and -Wall options, or individually
1199 via their -fwarn and -fno-warn flags.
1202 sub setupWarningFlags {
1203 &add_Hsc_flags( @StandardWarnings );
1207 Same unshifting magic, but for special linker flags.
1209 The configure script determines whether the object file symbol tables
1210 have a leading underscore, and sets @LeadingUnderscore@ accordingly.
1211 (The driver script `sees' the setting of the @LeadingUnderscore@
1212 by having the Makefile prepend it).
1216 local($uscore) = ( ${LeadingUnderscore} eq 'YES' ) ? '_' : '';
1219 (($Ld_main) ? ( '-u', "${uscore}Main_" . $Ld_main . '_closure' ) : ()));
1221 ( '-u', "${uscore}PrelBase_Z91Z93_closure" # i.e., []
1222 ,'-u', "${uscore}PrelBase_IZh_static_info"
1223 ,'-u', "${uscore}PrelBase_CZh_static_info"
1224 ,'-u', "${uscore}PrelBase_False_inregs_info"
1225 ,'-u', "${uscore}PrelBase_True_inregs_info"
1226 ,'-u', "${uscore}DEBUG_REGS"
1228 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
1229 # sometimes we have lots of toc entries...
1230 # unshift(@Ld_flags, ('-Xlinker -bbigtoc -Xlinker -bnoquiet'));
1231 unshift(@Ld_flags, ('-Xlinker -bbigtoc'));
1234 } # end of setupLinkOpts
1238 %************************************************************************
1240 \subsection{Set up include paths and system-library enslurpment}
1242 %************************************************************************
1244 Now that we know what garbage-collector, etc., are required, we can
1245 finalise our list of libraries to slurp through, and generally Get
1250 # default includes must be added AFTER option processing
1251 if ( ! $INSTALLING ) {
1252 push (@Include_dir, "$TopPwd/${CURRENT_DIR}/${GHC_INCLUDE_DIR}");
1254 push (@Include_dir, "$InstLibDirGhc/includes");
1255 push (@Include_dir, "$InstLibDirGhc/includes");
1257 } # end of setupIncPaths
1262 push(@SysLibrary, ( '-lHS', '-lHS_cbits' )); # basic I/O and prelude stuff
1265 foreach $f (@SysLibrary) {
1266 next if $f =~ /_cbits/;
1267 $f .= $BuildTag if $f =~ /^-lHS/;
1270 # fiddle the TopClosure file name...
1271 $TopClosureFile =~ s/XXXX//;
1273 # Push library HSrts, plus boring clib bit
1274 push(@SysLibrary, "-lHSrts${BuildTag}");
1275 push(@SysLibrary, '-lHSclib');
1277 # RTS compiled with cygwin32, uses the WinMM API
1278 # to implement the itimers, since cygwin.dll does not
1279 # support it. Only reqd. for `ways' that use itimers.
1281 push(@SysLibrary, '-lwinmm') if $BuildTag ne '' && $TargetPlatform eq 'i386-unknown-cygwin32';
1283 # Push the pvm libraries
1284 if ($BuildTag eq '_mp') {
1285 $pvmlib = "$ENV{'PVM_ROOT'}/lib/$ENV{'PVM_ARCH'}";
1286 push(@SysLibrary, "-L$pvmlib", '-lpvm3', '-lgpvm3');
1287 if ( $ENV{'PVM_ARCH'} eq 'SUNMP' ) {
1288 push(@SysLibrary, '-lthread', '-lsocket', '-lnsl');
1289 } elsif ( $ENV{'PVM_ARCH'} eq 'SUN4SOL2' ) {
1290 push(@SysLibrary, '-lsocket', '-lnsl');
1294 # Push the GNU multi-precision arith lib; and the math library
1295 push(@SysLibrary, '-lgmp');
1296 push(@SysLibrary, '-lm');
1299 %************************************************************************
1301 \subsection{Check that this system was built to do what we are asking}
1303 %************************************************************************
1305 Before continuing we check that the appropriate build is available.
1308 #die "$Pgm: no BuildAvail?? $BuildTag\n" if $BuildDescr{$BuildTag} eq '' ; # sanity
1310 if ( $BuildDescr{$BuildTag} eq '' ) {
1311 print STDERR "$Pgm: a `", $BuildDescr{$BuildTag},
1312 "' \"build\" is not available with your GHC setup.\n";
1313 print STDERR "(It was not configured for it at your site.)\n";
1314 print STDERR $ShortUsage;
1318 } # end of setupSyslibs
1322 %************************************************************************
1324 \subsection{Final miscellaneous setup bits before we start going}
1326 %************************************************************************
1328 Record largest specific heapsize, if any.
1330 sub setupHeapStackSize {
1331 $Specific_heap_size = $Specific_heap_size * $Scale_sizes_by;
1332 push(@HsC_rts_flags, '-H'.$Specific_heap_size);
1333 $Specific_stk_size = $Specific_stk_size * $Scale_sizes_by;
1334 push(@HsC_rts_flags, "-K$Specific_stk_size");
1338 If no input or link files seen, then we let 'em feed in stdin; this is
1339 mainly for debugging.
1343 if ($#Input_file < 0 && $#Link_file < 0) {
1344 @Input_file = ( '-' );
1346 open(INF, "> $Tmp_prefix.hs") || &tidy_up_and_die(1,"Can't open $Tmp_prefix.hs\n");
1347 print STDERR "Enter your Haskell program, end with ^D (on a line of its own):\n" if -t;
1348 while (<STDIN>) { print INF $_; }
1349 close(INF) || &tidy_up_and_die(1,"Failed writing to $Tmp_prefix.hs\n");
1354 Tell the world who we are, if they asked.
1356 print STDERR "${ProjectName}, version ${ProjectVersion}, patchlevel ${ProjectPatchLevel}\n"
1360 %************************************************************************
1362 \section[Driver-main-loop]{Main loop: Process input files, and link if required}
1364 %************************************************************************
1366 Process the input files; don't continue with linking if there are
1367 problems (global variable @$Status@ non-zero).
1369 foreach $ifile (@Input_file) {
1370 &ProcessInputFile($ifile);
1373 if ( $Status > 0 ) { # don't link if there were errors...
1374 print STDERR $ShortUsage;
1379 # append last minute flags linker and consistency flags
1386 Link if appropriate.
1389 local($libdirs) = '';
1391 # glue them together:
1392 push(@UserLibrary_dir, @SysLibrary_dir);
1394 $libdirs = '-L' . join(' -L',@UserLibrary_dir) if $#UserLibrary_dir >= 0;
1396 # for a linker, use an explicitly given one, or the going C compiler ...
1397 local($lnkr) = ( $Lnkr ) ? $Lnkr : $CcRegd;
1399 if ( ($Specific_output_file eq '') &&
1400 ($TargetPlatform eq 'i386-unknown-cygwin32') ) {
1401 $Specific_output_file = 'main.exe';
1402 print STDERR "Output file not specified, defaulting to \"main.exe\"\n";
1405 local($output) = ($Specific_output_file ne '') ? "-o $Specific_output_file" : '';
1406 @Files_to_tidy = ($Specific_output_file ne '') ? $Specific_output_file : 'a.out';
1408 local($to_do) = "$lnkr $Verbose @Ld_flags $output @Link_file $TopClosureFile $libdirs @UserLibrary @SysLibrary";
1409 &run_something($to_do, 'Linker');
1411 # finally, check the consistency info in the binary
1412 local($executable) = $Files_to_tidy[0];
1413 @Files_to_tidy = (); # reset; we don't want to nuke it if it's inconsistent
1416 # dynamically load consistency-chking code; then do it.
1417 require('ghc-consist.prl')
1418 || &tidy_up_and_die(1,"$Pgm: panic: can't load ghc-consist.prl!\n");
1420 &chk_consistency_info ( $executable );
1423 # if PVM parallel stuff, we do truly weird things.
1424 # Essentially: (1) move the executable over to where PVM expects
1425 # to find it. (2) create a script in place of the executable
1426 # which will cause the program to be run, via SysMan.
1427 if ( $PARing eq 'p' ) {
1428 local($pvm_executable) = $executable;
1429 local($pvm_executable_base);
1431 if ( $pvm_executable !~ /^\// ) { # a relative path name: make absolute
1432 local($pwd) = `pwd`;
1434 $pwd =~ s/^\/tmp_mnt//;
1435 $pvm_executable = "$pwd/$pvm_executable";
1438 $pvm_executable =~ s|/|=|g; # make /s into =s
1439 $pvm_executable_base = $pvm_executable;
1441 $pvm_executable = $ENV{'PVM_ROOT'} . '/bin/' . $ENV{'PVM_ARCH'}
1442 . "/$pvm_executable";
1444 &run_something("$Rm -f $pvm_executable; $Cp -p $executable $pvm_executable && $Rm -f $executable", 'Moving binary to PVM land');
1446 # OK, now create the magic script for "$executable"
1447 open(EXEC, "> $executable") || &tidy_up_and_die(1,"$Pgm: couldn't open $executable to write!\n");
1448 print EXEC <<EOSCRIPT1;
1449 eval 'exec perl -S \$0 \${1+"\$@"}'
1450 if \$running_under_some_shell;
1451 # =!=!=!=!=!=!=!=!=!=!=!
1452 # This script is automatically generated: DO NOT EDIT!!!
1453 # Generated by Glasgow Haskell, version ${ProjectVersion} ${ProjectPatchLevel}
1455 \$pvm_executable = '$pvm_executable';
1456 \$pvm_executable_base = '$pvm_executable_base';
1457 \$SysMan = '$SysMan';
1460 print EXEC <<\EOSCRIPT2;
1461 # first, some magical shortcuts to run "commands" on the binary
1463 if ($#ARGV == 1 && $ARGV[0] eq '+RTS' && $ARGV[1] =~ /^--((size|file|strip|rm|nm).*)/ ) {
1465 system("$cmd $pvm_executable");
1469 # OK, really run it; process the args first
1470 $ENV{'PE'} = $pvm_executable_base;
1472 $nprocessors = 2; # the default
1476 # ToDo: handle --RTS
1477 args: while ($a = shift(@ARGV)) {
1478 if ( $a eq '+RTS' ) {
1480 } elsif ( $a eq '-RTS' ) {
1483 if ( $a eq '-d' && $in_RTS_args ) {
1485 } elsif ( $a =~ /^-N(\d+)/ && $in_RTS_args ) {
1488 push(@nonPVM_args, $a);
1492 local($return_val) = 0;
1493 system("$SysMan $debug $pvm_executable $nprocessors @nonPVM_args");
1495 system("mv $ENV{'HOME'}/$pvm_executable_base.???.gr .") if -f "$ENV{'HOME'}/$pvm_executable_base.001.gr";
1498 close(EXEC) || die "Failed closing $executable\n";
1499 chmod 0755, $executable;
1503 # that... that's all, folks!
1505 exit $Status; # will still be 0 if all went well
1508 %************************************************************************
1510 \section[Driver-do-one-file]{How to process a single input file}
1512 %************************************************************************
1515 sub ProcessInputFile {
1516 local($ifile) = @_; # input file name
1517 local($ifile_root); # root of or basename of input file
1518 local($ofile_target); # ultimate output file we hope to produce
1519 # from input file (need to know for recomp
1520 # checking purposes)
1521 local($hifile_target);# ditto (but .hi file)
1522 local($ofile_c_stub_target);
1523 local($ofile_h_stub_target);
1526 Handle the weirdity of input from stdin.
1528 if ($ifile ne '-') {
1529 ($ifile_root = $ifile) =~ s/\.[^\.\/]+$//;
1530 $ofile_target = # may be reset later...
1531 ($Specific_output_file ne '' && ! $Do_lnkr)
1532 ? $Specific_output_file
1533 : &odir_ify($ifile_root, 'o');
1534 $hifile_target= ($Specific_hi_file ne '')
1536 : "$ifile_root.$HiSuffix"; # ToDo: odirify?
1537 # NB: may change if $ifile_root isn't module name (??)
1538 ($ofile_c_stub_target = $ifile) =~s/\.[^\.\/]+$/_stub.c/;
1539 ($ofile_h_stub_target = $ifile) =~s/\.[^\.\/]+$/_stub.h/;
1541 $ifile = "$Tmp_prefix.hs"; # we know that's where we put the input
1542 $ifile_root = '_stdin';
1543 $ofile_target = '_stdout'; # gratuitous?
1544 $hifile_target= '_stdout'; # ditto?
1548 We need to decide what phases of the compilation system we will run
1549 over this file. The defaults are the ones established when processing
1550 flags. (That established what the last phase run for all files is.)
1552 We do the pre-recompilation-checker phases here; the rest later.
1556 Look at the suffix and decide what initial phases of compilation may
1557 be dropped off for this file. Also the rather boring business of
1558 which files are coming-in/going-out.
1560 Again, we'll do the post-recompilation-checker parts of this later.
1562 local($do_lit2pgm) = ($ifile =~ /\.lhs$/) ? 1 : 0;
1563 local($do_hscpp) = 1; # but "hscpp" might really be "cat"
1566 # names of the files to stuff between phases
1567 # defaults are temporaries
1568 local($in_lit2pgm) = $ifile;
1569 local($lit2pgm_hscpp) = "$Tmp_prefix.lpp";
1570 local($hscpp_hsc) = "$Tmp_prefix.cpp";
1571 local($hsc_hi) = "$Tmp_prefix.hi";
1572 local($cc_as_o) = "${Tmp_prefix}_o.s"; # temporary for raw .s file if opt C
1573 local($cc_as) = "$Tmp_prefix.s"; # mangled or hsc-produced .s code
1574 local($as_out) = $ofile_target;
1576 local($is_hc_file) = 1; #Is the C code .hc or .c? Assume .hc for now
1578 # OK, let's strip off some literate junk..
1580 &runLit2pgm($in_lit2pgm, $lit2pgm_hscpp)
1582 $lit2pgm_hscpp = $ifile;
1588 # Scan the top of the de-litted file for {-# OPTIONS #-} pragmas
1589 &check_for_source_options($lit2pgm_hscpp,$ifile);
1591 # Options found in the source file take a back seat, i.e., we scan
1592 # them first. Only process the command line again if source file
1593 # contained anything of interest *or* there's more than one
1594 # input file (we have to reset the options).
1596 if ( $#Input_file >= 0 || $#File_options >= 0) {
1597 #@File_options = (@File_options, @Cmd_opts);
1599 # Now process the command line
1600 &initDriverGlobals();
1601 &processArgs((@File_options,@Cmd_opts));
1602 print STDERR "\nEffective command line: " .
1603 join(' ',(@File_options,@Cmd_opts)) . "\n" if $Verbose;
1606 # Having got the effective command line scanned, set up
1607 # the various options in prep for some real work.
1609 # check the sanity of the BuildTag we're about to use,
1610 # and if needs be, add some more flags and setup to
1611 # the different phases.
1614 &setupOptimiseFlags();
1617 &setupWarningFlags();
1618 &setupHeapStackSize();
1621 # These two variables need to be set after the
1622 # command-line has been processed and the build options
1623 # have be seen set up. This is because command-line options
1624 # can control whether to compile vias C or not.
1626 local($do_cc) = ( $Do_cc != -1) # i.e., it was set explicitly
1628 : ( ($HscOut eq '-C=') ? 1 : 0 );
1629 local($do_as) = $Do_as;
1630 local($hsc_out) = ( $HscOut eq '-C=' ) ? "$Tmp_prefix.hc" : "$Tmp_prefix.s" ;
1631 local($hsc_out_c_stub) = ( $HscOut eq '-C=' ) ? "${Tmp_prefix}_stb.c" : "";
1632 local($hsc_out_h_stub) = ( $HscOut eq '-C=' ) ? "${Tmp_prefix}_stb.h" : "";
1634 if ($Only_preprocess_hc) { # stop after having run $Cc -E
1637 if ($Only_preprocess_C) { # stop after having run $hscpp
1638 $do_hsc=0; $do_cc = 0; $do_as=0;
1639 } elsif ($ifile =~ /.lhs$/ || $ifile =~ /.hs$/ ) {
1641 } elsif ($ifile =~ /\.hc$/ || $ifile =~ /_hc$/ ) { # || $ifile =~ /\.$Isuffix$/o) # ToDo: better
1642 $do_hscpp = 0; $do_hsc = 0; $do_cc = 1;
1644 $hsc_out_c_stub = '';
1645 $hsc_out_h_stub = '';
1646 } elsif ($ifile =~ /\.c$/) {
1647 $do_hscpp = 0; $do_hsc = 0; $do_cc = 1;
1648 $hsc_out = $ifile; $is_hc_file = 0;
1649 $hsc_out_c_stub = '';
1650 $hsc_out_h_stub = '';
1651 } elsif ($ifile =~ /\.s$/) {
1652 $do_hscpp = 0; $do_hsc = 0; $do_cc = 0;
1654 } else { # don't know what it is, but nothing to do herein...
1655 $do_hscpp = 0; $do_hsc = 0; $do_cc = 0; $do_as = 0;
1658 # hack to avoid running hscpp
1659 $HsCpp = $Cat if ! $Cpp_flag_set;
1661 &runHscpp($in_lit2pgm, $lit2pgm_hscpp, $hscpp_hsc) if $do_hscpp;
1665 We now think about whether to run hsc/cc or not (when hsc produces .s
1666 stuff, it effectively takes the place of both phases).
1668 To get the output file name right: for each phase that we are {\em
1669 not} going to run, set its input (i.e., the output of its preceding
1670 phase) to @"$ifile_root.<suffix>"@.
1673 local($going_interactive) = $HscOut eq '-N=' || $ifile_root eq '_stdin';
1676 # Warning issued if -keep-hc-file-too is used without
1677 # -fvia-C (or the equivalent)
1679 if ( $HscOut ne '-C=' && $Keep_hc_file_too ) {
1680 print STDERR "$Pgm: warning: Native code generator to be used, -keep-hc-file-too will be ignored\n";
1683 if (! $do_cc && ! $do_as) { # stopping after hsc
1684 $hsc_out = ($Specific_output_file ne '')
1685 ? $Specific_output_file
1686 : &odir_ify($ifile_root, ($HscOut eq '-C=') ? 'hc' : 's');
1688 $ofile_target = $hsc_out; # reset
1691 if (! $do_as) { # stopping after gcc (or hsc)
1692 $cc_as = ($Specific_output_file ne '')
1693 ? $Specific_output_file
1694 : &odir_ify($ifile_root, ( $Only_preprocess_hc ) ? 'i' : 's');
1696 $ofile_target = $cc_as; # reset
1702 Now the Haskell compiler, C compiler, and assembler
1706 &runHscAndProcessInterfaces( $ifile, $hscpp_hsc, $ifile_root,
1707 $ofile_target, $hifile_target,
1708 $going_interactive);
1711 if (-f $hsc_out_c_stub) {
1712 &run_something("cp $hsc_out_c_stub $ofile_c_stub_target", 'Copy foreign export C stubs');
1715 if (-f $hsc_out_h_stub) {
1716 &run_something("cp $hsc_out_h_stub $ofile_h_stub_target", 'Copy foreign export header file');
1720 &runGcc ($is_hc_file, $hsc_out, $cc_as_o);
1721 &runMangler($is_hc_file, $cc_as_o, $cc_as, $ifile_root) if ! $Only_preprocess_hc;
1724 &split_asm_file($cc_as) if $do_as && $SplitObjFiles;
1726 # save a copy of the .s file..
1727 &saveIntermediate($ifile_root , "s" , $cc_as) if ($do_as && $Keep_s_file_too);
1728 &runAs($as_out, $ifile_root) if $do_as;
1731 Finally, decide what to queue up for linker input.
1733 # tentatively assume we will eventually produce linker input:
1734 push(@Link_file, &odir_ify($ifile_root, 'o'));
1736 #ToDo: local($or_isuf) = ($Isuffix eq '') ? '' : "|$Isuffix";
1739 if ( $ifile !~ /\.(lhs|hs|hc|c|s|a)$/ && $ifile !~ /_hc$/ ) {
1740 # There's sometimes confusion regarding .hi files; users
1741 # supplying them on the command line.
1742 if ( $ifile =~ /\.hi$/ ) {
1743 print STDERR "$Pgm: warning: found `$ifile' on command line; interface files should not be supplied here - ignoring it.\n";
1745 print STDERR "$Pgm: don't recognise suffix on `$ifile'; passing it through to linker\n";
1747 # oops; we tentatively pushed the wrong thing; fix & do the right thing
1748 pop(@Link_file); push(@Link_file, $ifile);
1752 } # end of ProcessInputFile
1755 %************************************************************************
1757 \section[Driver-run-phases]{Routines to run the various phases}
1759 %************************************************************************
1763 local($in_lit2pgm, $lit2pgm_hscpp) = @_;
1767 # Only add #line pragma if we're going to need it.
1768 $to_do = "echo '#line 1 \"$in_lit2pgm\"' > $lit2pgm_hscpp && " if ($Cpp_flag_set);
1769 $to_do .= "$Unlit @Unlit_flags $in_lit2pgm - >> $lit2pgm_hscpp";
1771 push(@Files_to_tidy, $lit2pgm_hscpp );
1773 &run_something($to_do, 'literate pre-processor');
1779 local($in_lit2pgm, $lit2pgm_hscpp, $hscpp_hsc) = @_;
1783 # Strictly speaking, echoing of the following line pragma is only required
1784 # on non-delit'ed input, as we've already added it during de-lit. However,
1785 # hscpp will then add a {-# LINE 1 "$lit2pgm_hsc" -} to the top of the file,
1786 # which is not very informative (but harmless). Hence, we uniformly have
1787 # {-# LINE 1 "$in_lit2pgm" #-} as the first line to all cpp'ed hsc input.
1789 $to_do = "echo '{-# LINE 1 \"$in_lit2pgm\" -}' > $hscpp_hsc && ";
1791 if ($HsCpp eq $Cat) {
1792 $to_do .= "$HsCpp $lit2pgm_hscpp >> $hscpp_hsc";
1793 push(@Files_to_tidy, $hscpp_hsc );
1794 &run_something($to_do, 'Ineffective C pre-processor');
1796 local($includes) = '-I' . join(' -I',@Include_dir);
1797 $to_do .= "$HsCpp $Verbose @HsCpp_flags -D__HASKELL1__=$Haskell1Version -D__GLASGOW_HASKELL__=$ProjectVersionInt $includes $lit2pgm_hscpp >> $hscpp_hsc";
1798 push(@Files_to_tidy, $hscpp_hsc );
1799 &run_something($to_do, 'Haskellised C pre-processor');
1802 if ( $Only_preprocess_C ) {
1803 $to_do = "$Cat $hscpp_hsc";
1804 &run_something($to_do, '');
1812 sub runHscAndProcessInterfaces {
1813 local($ifile, $hscpp_hsc, $ifile_root,
1814 $ofile_target, $hifile_target,
1815 $going_interactive) = @_;
1817 # $ifile is the original input file
1818 # $hscpp_hsc post-unlit, post-cpp, etc., input file
1819 # $ifile_root input filename minus suffix
1820 # $ofile_target the output file that we ultimately hope to produce
1821 # $hifile_target the .hi file ... (ditto)
1823 local($source_unchanged) = 1;
1825 # Check if the source file is up to date relative to the target; in
1826 # that case we say "source is unchanged" and let the compiler bail out
1827 # early if the import usage information allows it.
1829 ($i_dev,$i_ino,$i_mode,$i_nlink,$i_uid,$i_gid,$i_rdev,$i_size,
1830 $i_atime,$i_mtime,$i_ctime,$i_blksize,$i_blocks) = stat($ifile);
1832 # The informational messages below are now conditional on -v being set -- SOF
1833 if ( $ofile_target ne "_stdin.s" && ! -f $ofile_target ) {
1834 print STDERR "$Pgm:compile:Output file $ofile_target doesn't exist\n" if $Verbose;
1835 $source_unchanged = 0;
1838 ($o_dev,$o_ino,$o_mode,$o_nlink,$o_uid,$o_gid,$o_rdev,$o_size,
1839 $o_atime,$o_mtime,$o_ctime,$o_blksize,$o_blocks) = stat(_); # stat info from -f test
1841 if ( $hifile_target ne "_stdout" && ! -f $hifile_target ) {
1842 print STDERR "$Pgm:compile:Interface file $hifile_target doesn't exist\n" if $Verbose;
1843 $source_unchanged = 0;
1846 ($hi_dev,$hi_ino,$hi_mode,$hi_nlink,$hi_uid,$hi_gid,$hi_rdev,$hi_size,
1847 $hi_atime,$hi_mtime,$hi_ctime,$hi_blksize,$hi_blocks) = stat(_); # stat info from -f test
1849 if ( $ofile_target ne "_stdin.s" && $i_mtime > $o_mtime) {
1850 print STDERR "$Pgm:recompile:Input file $ifile newer than $ofile_target\n" if $Verbose;
1851 $source_unchanged = 0;
1854 # Tell the compiler which version we're using
1855 push(@HsC_flags, "-fhi-version=${ProjectVersionInt}");
1857 # So if source_unchanged is still "1", we pass on the good news to the compiler
1858 # The -recomp flag can disable this, forcing recompilation
1859 if ($Do_recomp_chkr && $source_unchanged) {
1860 push(@HsC_flags, '-fsource-unchanged');
1865 &runHsc($ifile_root, $hsc_out, $hsc_hi, $hsc_out_c_stub, $hsc_out_h_stub, $going_interactive);
1867 # See if it bailed out early, saying nothing needed doing.
1868 # We work this out by seeing if it created an output .hi file
1870 if ( ! -f $hsc_hi && $ProduceHi !~ /-nohifile=/ ) {
1871 # Doesn't exist, so we bailed out early.
1872 # Tell the C compiler and assembler not to run
1873 $do_cc = 0; $do_as = 0;
1875 # Update dependency info, touch both object file and
1876 # interface file, so that the following invariant is
1879 # a dependent module's interface file should after recompilation
1880 # checking be newer than the interface files of its imports.
1882 # That is, if module A's interface file changes, then module B
1883 # (which import from A) needs to be checked.
1884 # If A's change does not affect B, which causes the compiler to bail
1885 # out early, we still need to touch the interface file of B. The reason
1886 # for this is that B may export A's interface.
1888 &run_something("touch $ofile_target",
1889 "Touch $ofile_target, to propagate dependencies") if $HscOut ne '-N=';
1890 &run_something("touch $hifile_target",
1891 "Touch $hifile_target, to propagate dependencies") if $ProduceHi =~ /-nohifile=/ ;
1895 # Didn't bail out early (new .hi file) so we thunder on
1897 # If non-interactive, heave in the consistency info at the end
1898 # NB: pretty hackish (depends on how $output is set)
1899 if ( ! $going_interactive ) {
1900 if ( $HscOut eq '-C=' ) {
1901 $to_do = "echo 'static char ghc_hsc_ID[] = \"\@(#)hsc $ifile\t$HsC_major_version.$HsC_minor_version,$HsC_consist_options\";' >> $hsc_out";
1903 } elsif ( $HscOut eq '-S=' ) {
1904 local($consist) = "hsc.$ifile.$HsC_major_version.$HsC_minor_version.$HsC_consist_options";
1905 $consist =~ s/,/./g;
1906 $consist =~ s/\//./g;
1907 $consist =~ s/-/_/g;
1908 $consist =~ s/[^A-Za-z0-9_.]/ZZ/g; # ToDo: properly?
1909 $to_do = "echo '\n\t.text\n$consist:' >> $hsc_out";
1911 &run_something($to_do, 'Pin on Haskell consistency info');
1915 # Interface-handling is important enough to live off by itself
1916 if ( $ProduceHi !~ /-nohifile=/ ) { # If we've produced one, process it.
1917 require('ghc-iface.prl') || &tidy_up_and_die(1,"$Pgm: panic: can't load ghc-iface.prl!\n");
1918 &postprocessHiFile($hsc_hi, $hifile_target, $going_interactive);
1920 # if we're going to split up object files,
1921 # we inject split markers into the .hc file now
1922 if ( $HscOut eq '-C=' && $SplitObjFiles ) {
1923 &inject_split_markers ( $hsc_out );
1926 # save a copy of the .hc file, even if we are carrying on...
1927 if ($HscOut eq '-C=' && $do_cc && $Keep_hc_file_too) {
1928 &saveIntermediate($ifile_root , "hc" , $hsc_out);
1938 local($ifile_root, $hsc_out, $hsc_hi, $hsc_out_c_stub, $hsc_out_h_stub, $going_interactive) = @_;
1940 # prepend comma to HsP flags (so hsc can tell them apart...)
1941 foreach $a ( @HsP_flags ) { $a = ",$a" unless $a =~ /^,/; }
1943 &makeHiMap() unless $HiMapDone;
1944 push(@HsC_flags, "-himap=$HiIncludeString");
1946 # here, we may produce .hc/.s and/or .hi files
1947 local($output) = '';
1948 #@Files_to_tidy = ();
1950 if ( $going_interactive ) {
1951 # don't need .hi unless we're going to show it on stdout:
1952 $ProduceHi = '-nohifile=' if ! $HiOnStdout;
1953 $do_cc = 0; $do_as = 0; $Do_lnkr = 0; # and we won't go any further...
1956 # set up for producing output/.hi; note that flag twiddling
1957 # may mean that nothing will actually be produced:
1958 $output = "$ProduceHi$hsc_hi $HscOut$hsc_out -F=$hsc_out_c_stub -FH=$hsc_out_h_stub";
1959 push(@Files_to_tidy, $hsc_hi, $hsc_out, $hsc_out_c_stub, $hsc_out_h_stub );
1961 # if we're compiling foo.hs, we want the GC stats to end up in foo.stat
1962 if ( $CollectingGCstats ) {
1963 push(@HsC_rts_flags, "-S$ifile_root.stat");
1964 push(@Files_to_tidy, "$ifile_root.stat");
1967 if ( $CollectGhcTimings ) { # assume $RTS_style eq 'ghc'
1968 # emit nofibbish time/bytes-alloc stats to stderr;
1969 # see later .stat file post-processing
1970 print STDERR "warning: both -Rgc-stats and -Rghc-timing used, -Rghc-timing wins." if $CollectingGCstats;
1971 push(@HsC_rts_flags, "-s$Tmp_prefix.stat");
1972 push(@Files_to_tidy, "$Tmp_prefix.stat");
1976 if ($Specific_dump_file ne '') {
1977 $dump = "2>> $Specific_dump_file";
1978 $Using_dump_file = 1;
1982 # Win32 only: If the command processor used by system()
1983 # exec()s the application as an ordinary Win32 executable,
1984 # we're in trouble here, since the command line is likely
1985 # to be > 255 chars long. To work around this situation,
1986 # $HsC also understands `at-files', i.e., `@file' on the
1987 # command line will cause $HsC to add the contents of `file'
1988 # to the command line.
1990 # [ Note: support for `at-files' is not compiled in by default ]
1991 $cmd_line_opts_via_at_file=0;
1992 if ($cmd_line_opts_via_at_file) {
1994 local($to_do_opts) = "$Tmp_prefix.opts";
1995 open(OPTS, "> $Tmp_prefix.opts") || &tidy_up_and_die(1,"Can't open $Tmp_prefix.opts\n");
1996 print OPTS "$dump @HsC_flags $CoreLint $StgLint $Verbose";
1998 $to_do = "$HsC @HsP_flags ,$hscpp_hsc \@$Tmp_prefix.opts $output +RTS @HsC_rts_flags";
2002 $to_do = "$HsC @HsP_flags ,$hscpp_hsc $dump @HsC_flags $CoreLint $StgLint $Verbose $output +RTS @HsC_rts_flags";
2004 &run_something($to_do, 'Haskell compiler');
2006 # finish business w/ nofibbish time/bytes-alloc stats
2007 &process_ghc_timings() if $CollectGhcTimings;
2011 Use \tr{@Import_dir} and \tr{@SysImport_dir} to make a tmp file
2012 of (module-name, pathname) pairs, one per line, separated by a space.
2015 $HiIncludeString = (); # dir1:dir2:dir3, to pass to GHC
2019 # collect in %HiMap; write later; also used elsewhere in driver
2021 local($mod, $path, $d, $e);
2023 # reset the global variables:
2025 $HiIncludeString = (); # dir1:dir2:dir3, to pass to GHC
2027 foreach $d ( @Import_dir ) {
2028 if ($HiIncludeString) {
2029 $HiIncludeString = "$HiIncludeString:${d}%.${HiSuffix}";
2031 $HiIncludeString = "$d%.${HiSuffix}";
2036 foreach $d ( @SysImport_dir ) {
2037 if ($HiIncludeString) {
2038 $HiIncludeString = "$HiIncludeString:${d}%.${HiSuffix_prelude}";
2040 $HiIncludeString = "${d}%.${HiSuffix_prelude}";
2049 %************************************************************************
2051 \section[Driver-misc-utils]{Miscellaneous utilities}
2053 %************************************************************************
2055 %************************************************************************
2057 \subsection[Driver-odir-ify]{@odir_ify@: Mangle filename if \tr{-odir} set}
2059 %************************************************************************
2063 local($ofile,$def_suffix) = @_;
2065 return(($Osuffix eq '') ? "$ofile.$def_suffix" : "$ofile.$Osuffix" );
2069 local($orig_file, $def_suffix) = @_;
2070 if ($Specific_output_dir eq '') { # do nothing
2071 &osuf_ify($orig_file, $def_suffix);
2073 local ($orig_file_only);
2074 ($orig_file_only = $orig_file) =~ s|.*/||;
2075 &osuf_ify("$Specific_output_dir/$orig_file_only",$def_suffix);
2082 local($is_hc_file, $hsc_out, $cc_as_o) = @_;
2084 local($includes) = '-I' . join(' -I', @Include_dir);
2087 local($c_flags) = "@CcBoth_flags";
2088 local($ddebug_flag) = ( $DEBUGging ) ? '-DDEBUG' : '';
2090 # "input" files to use that are not in some weird directory;
2091 # to help C compilers grok .hc files [ToDo: de-hackify]
2092 local($cc_help) = "ghc$$.c";
2093 local($cc_help_s) = "ghc$$.s";
2096 $s_output = ($is_hc_file || $TargetPlatform =~ /^(powerpc|rs6000|hppa|i386)/) ? $cc_as_o : $cc_as;
2097 $c_flags .= " @CcRegd_flags";
2098 $c_flags .= ($is_hc_file) ? " @CcRegd_flags_hc" : " @CcRegd_flags_c";
2100 # C compiler won't like the .hc extension. So we create
2101 # a tmp .c file which #include's the needful.
2102 open(TMP, "> $cc_help") || &tidy_up_and_die(1,"$Pgm: failed to open `$cc_help' (to write)\n");
2103 if ( $is_hc_file ) {
2105 #ifdef __STG_GCC_REGS__
2106 # if ! (defined(MAIN_REG_MAP) || defined(MARK_REG_MAP) || defined(SCAN_REG_MAP) || defined(SCAV_REG_MAP) || defined(FLUSH_REG_MAP))
2107 # define MAIN_REG_MAP
2110 #include "stgdefs.h"
2112 # user may have asked for #includes to be injected...
2113 print TMP @CcInjects if $#CcInjects >= 0;
2115 # Straight .c files may want to know that they're being used
2116 # with a particular version of GHC, so we define __GLASGOW_HASKELL__ for their benefit.
2117 print TMP "#define __GLASGOW_HASKELL__ ${ProjectVersionInt}\n";
2119 # heave in the consistency info
2120 print TMP "static char ghc_cc_ID[] = \"\@(#)cc $ifile\t$Cc_major_version.$Cc_minor_version,$Cc_consist_options\";\n";
2122 print TMP "#include \"$hsc_out\"\n";
2123 close(TMP) || &tidy_up_and_die(1,"Failed writing to $cc_help\n");
2125 # Don't redirect stderr into intermediate file if slamming output onto stdout (e.g., with -E)
2126 local($fuse_stderr) = "2>&1" if ! $Only_preprocess_hc;
2127 local($to_do) = "$cc $Verbose $ddebug_flag $c_flags @Cpp_define -D__HASKELL1__=$Haskell1Version $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 )";
2128 # note: __GLASGOW_HASKELL__ is pointedly *not* #defined at the C level.
2130 if ( $Only_preprocess_hc ) { # HACK ALERT!
2131 $to_do =~ s/ -S\b//g;
2133 push(@Files_to_tidy, $cc_help, $cc_help_s, $s_output );
2134 $PostprocessCcOutput = 1 if ! $Only_preprocess_hc; # hack, dear hack...
2135 &run_something($to_do, 'C compiler');
2136 $PostprocessCcOutput = 0;
2137 if ( $Only_preprocess_hc ) {
2138 system("$Cat $Tmp_prefix.ccout");
2140 unlink($cc_help, $cc_help_s);
2146 local($is_hc_file, $cc_as_o, $cc_as, $ifile_root) = @_;
2148 if ( $is_hc_file ) {
2149 # dynamically load assembler-fiddling code, which we are about to use:
2150 require('ghc-asm.prl')
2151 || &tidy_up_and_die(1,"$Pgm: panic: can't load ghc-asm.prl!\n");
2154 print STDERR `cat $cc_as_o` if $Dump_raw_asm; # to stderr, before mangling
2157 # post-process the assembler [.hc files only]
2158 &mangle_asm($cc_as_o, $cc_as);
2162 #OLD: local($target) = 'oops';
2163 #OLD: $target = '-alpha' if $TargetPlatform =~ /^alpha-/;
2164 #OLD: $target = '-hppa' if $TargetPlatform =~ /^hppa/;
2165 #OLD: $target = '-old-asm' if $TargetPlatform =~ /^i386-/;
2166 #OLD: $target = '-m68k' if $TargetPlatform =~ /^m68k-/;
2167 #OLD: $target = '-mips' if $TargetPlatform =~ /^mips-/;
2168 #OLD: $target = '' if $TargetPlatform =~ /^powerpc-/;
2169 #OLD: $target = '-solaris' if $TargetPlatform =~ /^sparc-sun-solaris2/;
2170 #OLD: $target = '-sparc' if $TargetPlatform =~ /^sparc-sun-sunos4/;
2172 #OLD: if ( $target ne '' ) {
2173 #OLD: require("ghc-asm$target.prl")
2174 #OLD: || &tidy_up_and_die(1,"$Pgm: panic: can't load ghc-asm$target.prl!\n");
2175 #OLD: &mangle_asm($cc_as_o, "$cc_as-2"); # the OLD one!
2176 #OLD: &run_something("$Cmp -s $cc_as-2 $cc_as || $Diff $cc_as-2 $cc_as 1>&2 || exit 0",
2177 #OLD: "Diff'ing old and new mangled .s files"); # NB: to stderr
2180 } elsif ($TargetPlatform =~ /^hppa/) {
2181 # minor mangling of non-threaded files for hp-pa only
2182 require('ghc-asm.prl')
2183 || &tidy_up_and_die(1,"$Pgm: panic: can't load ghc-asm-hppa.prl!\n");
2184 &mini_mangle_asm_hppa($cc_as_o, $cc_as);
2186 } elsif ($TargetPlatform =~ /^powerpc|^rs6000/) {
2187 # minor mangling of non-threaded files for powerpcs and rs6000s
2188 require('ghc-asm.prl')
2189 || &tidy_up_and_die(1,"$Pgm: panic: can't load ghc-asm-powerpc.prl!\n");
2190 &mini_mangle_asm_powerpc($cc_as_o, $cc_as);
2191 } elsif ($TargetPlatform =~ /^i386/) {
2192 # extremely-minor OFFENSIVE mangling of non-threaded just one file
2193 require('ghc-asm.prl')
2194 || &tidy_up_and_die(1,"$Pgm: panic: can't load ghc-asm.prl!\n");
2195 &mini_mangle_asm_i386($cc_as_o, $cc_as);
2198 # save a copy of the .s file, even if we are carrying on...
2199 #if ($do_as && $Keep_s_file_too) {
2200 # &saveIntermediate($ifile_root , "s" , $cc_as);
2207 local($as_out, $ifile_root) = @_;
2209 local($asmblr) = ( $As ) ? $As : $CcRegd;
2211 if ( ! $SplitObjFiles ) {
2212 local($to_do) = "$asmblr -o $as_out -c @As_flags $cc_as";
2213 push(@Files_to_tidy, $as_out );
2214 &run_something($to_do, 'Unix assembler');
2216 } else { # more complicated split-ification...
2218 # must assemble files $Tmp_prefix__[1 .. $NoOfSplitFiles].s
2220 # If -odir is used, great, just pin it in front of the
2221 # generated split file names. If it hasn't been set, we
2222 # snatch it from the ifile_root.
2226 if ( $Specific_output_dir eq '' ) {
2227 $Specific_output_dir = ${ifile_root};
2230 for ($f = 1; $f <= $NoOfSplitFiles; $f++ ) {
2231 local($split_out) = &odir_ify("${ifile_root}__${f}",'o');
2232 local($to_do) = "$asmblr -o $split_out -c @As_flags ${Tmp_prefix}__${f}.s";
2233 push(@Files_to_tidy, $split_out );
2235 &run_something($to_do, 'Unix assembler');
2241 %************************************************************************
2243 \subsection[Driver-run-something]{@run_something@: Run a phase}
2245 %************************************************************************
2249 local($str_to_do, $tidy_name) = @_;
2251 print STDERR "\n$tidy_name:\n\t" if $Verbose;
2252 print STDERR "$str_to_do\n" if $Verbose;
2254 if ($Using_dump_file) {
2255 open(DUMP, ">> $Specific_dump_file")
2256 || &tidy_up_and_die(1,"$Pgm: failed to open `$Specific_dump_file'\n");
2257 print DUMP "\nCompilation Dump for: $str_to_do\n\n";
2259 || &tidy_up_and_die(1,"$Pgm: failed closing `$Specific_dump_file'\n");
2262 local($return_val) = 0;
2264 if ( length($str_to_do) > 4000) {
2265 # 4000 - on the random side, just like the *real* ARG_MAX
2268 # With some shells, command lines of this length may
2269 # very well cause trouble. To safeguard against this, we squirrel the
2270 # command into a file and exec that.
2271 local ($sh) = $ENV{'REAL_SHELL'};
2272 print STDERR "Backup plan A: saving cmd line in ${Tmp_prefix}.sh and executing that with $sh\n" if $Verbose;
2273 open (TEMP, "> ${Tmp_prefix}.sh") ||
2274 &tidy_up_and_die(1,"$Pgm: failed to open `$Tmp_prefix.sh'\n");
2275 print TEMP "$Time $str_to_do\n";
2277 &tidy_up_and_die(1,"$Pgm: failed closing `$Tmp_prefix.sh'\n");
2278 system("$sh $Tmp_prefix.sh");
2281 unlink "${Tmp_prefix}.sh";
2283 system("$Time $str_to_do");
2287 if ( $PostprocessCcOutput ) { # hack, continued
2288 open(CCOUT, "< $Tmp_prefix.ccout")
2289 || &tidy_up_and_die(1,"$Pgm: failed to open `$Tmp_prefix.ccout'\n");
2291 next if /attribute directive ignored/;
2292 next if /call-clobbered/;
2293 next if /from .*COptRegs\.lh/;
2294 next if /from .*(stg|rts)defs\.h:/;
2295 next if /from ghc\d+.c:\d+:/;
2296 next if /from .*\.lc/;
2297 next if /from .*SMinternal\.l?h/;
2298 next if /ANSI C does not support \`long long\'/;
2299 next if /warning:.*was declared \`extern\' and later \`static\'/;
2300 next if /warning: assignment discards \`const\' from pointer target type/;
2301 next if /: At top level:$/;
2302 next if /: In function \`.*\':$/;
2303 next if /\`ghc_cc_ID\' defined but not used/;
2306 close(CCOUT) || &tidy_up_and_die(1,"$Pgm: failed closing `$Tmp_prefix.ccout'\n");
2309 if ($return_val != 0) {
2310 if ($Using_dump_file) {
2311 print STDERR "Compilation Errors dumped in $Specific_dump_file\n";
2313 &tidy_up_and_die($return_val, '');
2315 $Using_dump_file = 0;
2319 %************************************************************************
2321 \subsection[Driver-ghc-timing]{Emit nofibbish GHC timings}
2323 %************************************************************************
2325 NB: nearly the same as in @runstdtest@ script.
2328 sub process_ghc_timings {
2329 local($StatsFile) = "$Tmp_prefix.stat";
2330 local($SysSpecificTiming) = 'ghc';
2332 open(STATS, $StatsFile) || die "Failed when opening $StatsFile\n";
2333 local($max_live) = 0;
2334 local($tot_live) = 0; # for calculating residency stuff
2335 local($tot_samples) = 0;
2338 if (! /Minor/ && /^\s*\d+\s+\d+\s+(\d+)\s+\d+\.\d+\%/ ) {
2339 $max_live = $1 if $max_live < $1;
2343 $BytesAlloc = $1 if /^\s*([0-9,]+) bytes allocated in the heap/;
2345 if ( /^\s*([0-9,]+) bytes maximum residency .* (\d+) sample/ ) {
2346 $MaxResidency = $1; $ResidencySamples = $2;
2349 $GCs = $1 if /^\s*([0-9,]+) garbage collections? performed/;
2351 # The presence of -? in the following pattern is only there to
2352 # accommodate 0.29 && <= 2.05 RTS'
2353 if ( /^\s*INIT\s+time\s*(\d+\.\d\d)s\s*\(\s*-?(\d+\.\d\d)s elapsed\)/ ) {
2354 $InitTime = $1; $InitElapsed = $2;
2355 } elsif ( /^\s*MUT\s+time\s*(\d+\.\d\d)s\s*\(\s*(\d+\.\d\d)s elapsed\)/ ) {
2356 $MutTime = $1; $MutElapsed = $2;
2357 } elsif ( /^\s*GC\s+time\s*(\d+\.\d\d)s\s*\(\s*(\d+\.\d\d)s elapsed\)/ ) {
2358 $GcTime = $1; $GcElapsed = $2;
2361 close(STATS) || die "Failed when closing $StatsFile\n";
2362 if ( $tot_samples > 0 ) {
2363 $ResidencySamples = $tot_samples;
2364 $MaxResidency = $max_live;
2365 $AvgResidency = int ($tot_live / $tot_samples) ;
2368 # warn about what we didn't find
2369 print STDERR "Warning: BytesAlloc not found in stats file\n" unless defined($BytesAlloc);
2370 print STDERR "Warning: GCs not found in stats file\n" unless defined($GCs);
2371 print STDERR "Warning: InitTime not found in stats file\n" unless defined($InitTime);
2372 print STDERR "Warning: InitElapsed not found in stats file\n" unless defined($InitElapsed);
2373 print STDERR "Warning: MutTime not found in stats file\n" unless defined($MutTime);
2374 print STDERR "Warning: MutElapsed not found in stats file\n" unless defined($MutElapsed);
2375 print STDERR "Warning: GcTime inot found in stats file\n" unless defined($GcTime);
2376 print STDERR "Warning: GcElapsed not found in stats file\n" unless defined($GcElapsed);
2378 # things we didn't necessarily expect to find
2379 $MaxResidency = 0 unless defined($MaxResidency);
2380 $AvgResidency = 0 unless defined($AvgResidency);
2381 $ResidencySamples = 0 unless defined($ResidencySamples);
2384 $BytesAlloc =~ s/,//g;
2385 $MaxResidency =~ s/,//g;
2387 $InitTime =~ s/,//g;
2388 $InitElapsed =~ s/,//g;
2390 $MutElapsed =~ s/,//g;
2392 $GcElapsed =~ s/,//g;
2394 # print out what we found
2395 print STDERR "<<$SysSpecificTiming: ",
2396 "$BytesAlloc bytes, $GCs GCs, $AvgResidency/$MaxResidency avg/max bytes residency ($ResidencySamples samples), $InitTime INIT ($InitElapsed elapsed), $MutTime MUT ($MutElapsed elapsed), $GcTime GC ($GcElapsed elapsed)",
2397 " :$SysSpecificTiming>>\n";
2404 %************************************************************************
2406 \subsection[Driver-dying]{@tidy_up@ and @tidy_up_and_die@: Dying gracefully}
2408 %************************************************************************
2412 local($to_do) = "\n$Rm $Tmp_prefix*";
2413 if ( $Tmp_prefix !~ /^\s*$/ ) {
2414 print STDERR "$to_do\n" if $Verbose;
2419 sub tidy_up_and_die {
2420 local($return_val, $msg) = @_;
2422 # delete any files to tidy
2423 print STDERR "deleting... @Files_to_tidy\n" if $Verbose && $#Files_to_tidy >= 0;
2424 unlink @Files_to_tidy if $#Files_to_tidy >= 0;
2428 exit (($return_val == 0) ? 0 : 1);
2432 %************************************************************************
2434 \subsection[Driver-arg-with-arg]{@grab_arg_arg@: Do an argument with an argument}
2436 %************************************************************************
2438 Some command-line arguments take an argument, e.g.,
2439 \tr{-Rmax-heapsize} expects a number to follow. This can either be
2440 given a part of the same argument (\tr{-Rmax-heapsize8M}) or as the
2441 next argument (\tr{-Rmax-heapsize 8M}). We allow both cases.
2443 Note: no error-checking; \tr{-Rmax-heapsize -Rgc-stats} will silently
2444 gobble the second argument (and probably set the heapsize to something
2448 local(*Args, $option, $rest_of_arg) = @_;
2450 if ($rest_of_arg ne '') {
2451 return($rest_of_arg);
2452 } elsif ($#Args >= 0) {
2453 local($temp) = $Args[0]; shift(@Args);
2456 print STDERR "$Pgm: no argument following $option option\n";
2467 #Not in HsC_antiflag ## NO!: and not already in HsC_flags
2469 foreach $f ( @HsC_antiflags ) {
2470 return(0) if $flag eq $f;
2472 # foreach $f ( @HsC_flags ) {
2473 # return(0) if $flag eq $f;
2478 sub squashHscFlag { # pretty terrible
2482 foreach $f ( @HsC_flags ) {
2483 if ($flag eq $f) { $f = ''; }
2491 foreach $f ( @flags ) {
2492 push( @HsC_flags, $f ) if &isntAntiFlag($f);
2499 local($syslib) = @_;
2501 # The Win32 lib sources live in hslibs/
2502 if ( $syslib eq 'win32' && ! $INSTALLING ) {
2503 unshift(@SysImport_dir, "$TopPwd/hslibs/$syslib/src");
2504 push(@SysLibrary_dir, "$TopPwd/hslibs/$syslib/src");
2506 unshift(@SysImport_dir,
2507 $INSTALLING ? "$InstLibDirGhc/imports/$syslib"
2508 : "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/$syslib");
2510 push(@SysLibrary_dir,
2511 $INSTALLING ? ("$InstLibDirGhc")
2512 : ("$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/$syslib",
2513 "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/$syslib/cbits"));
2515 push(@SysLibrary, "-lHS$syslib");
2516 push(@SysLibrary, "-lHS${syslib}_cbits")
2517 unless $syslib =~ /^(contrib|exts|concurrent|win32)$/; #HACK! have no cbits
2521 Source files may have {-# OPTIONS ... #-} pragmas at the top, containing
2522 command line options we want to append to collection of commands specified
2523 directly. @check_for_source_options@ looks at the top of a de-lit'ified Haskell
2524 file for any such pragmas:
2527 sub check_for_source_options {
2528 local($file,$ifile) = @_;
2529 local($comment_start,$comment_end);
2531 if ($ifile =~ /\.hc$/ ||
2534 $ifile =~ /_s$/ ) { # `Real' C intermediate
2535 $comment_start = "/\\*";
2536 $comment_end = "\\*/";
2537 } else { # Assume it is a file containing Haskell source
2538 $comment_start = "{-#";
2539 $comment_end = "#-}";
2542 open(FILE,$file) || return(1); # No big loss
2545 if ( /^${comment_start} OPTIONS (.*)${comment_end}$/ ) {
2546 # add the options found at the back of the command line.
2547 local(@entries) = split(/\s+/,$1);
2548 print STDERR "Found OPTIONS " . join(' ',@entries) . " in $file\n" if $Verbose;
2549 push(@File_options, @entries);
2551 elsif ( /^$/ ) { # ignore empty lines
2554 elsif ( /^#line.+$/ ) { # ignore comment lines (unused..ToDo: rm )
2557 elsif ( /^{-# LINE.+$/ ) { # ignore line pragmas
2560 else { # stop looking, something non-empty / not
2561 # ${comment_start} OPTIONS .. ${comment_end} encountered.
2562 close(FILE);return(0);
2571 We split the initial argv up into three arrays:
2577 the reason for doing so is to be able to deal
2578 with {-# OPTIONS #-} pragma in source files properly.
2584 arg: while($_ = $args[0]) {
2586 # sigh, we have to deal with these -option arg specially here.
2587 /^-(tmpdir|odir|ohi|o|isuf|osuf|hisuf|hisuf-prelude|odump|syslib)$/ &&
2588 do { push(@Cmd_opts, $_); push(@Cmd_opts,$args[0]); shift(@args); next arg; };
2589 /^--?./ && do { push(@Cmd_opts, $_); next arg; };
2591 if (/\.([^_]+_)?[oa]$/) {
2592 push(@Link_file, $_);
2594 push(@Input_file, $_);
2597 # input files must exist:
2599 print STDERR "$Pgm: input file doesn't exist: $_\n";
2607 When saving an intermediate file (.hc or .s) away, we
2608 have to prefix any OPTIONS found in the original source file.
2611 sub saveIntermediate {
2612 local ($final,$suffix,$tmp)= @_ ;
2615 # $final -- root of where to park ${final}.${suffix}
2616 # $tmp -- temporary file where hsc put the intermediate file.
2618 # Delete the old file
2619 $to_do = "$Rm ${final}.${suffix}"; &run_something($to_do, "Removing old .${suffix} file");
2621 if ( $#File_options >= 0 ) { # OPTIONS found in Haskell source unit
2622 # Add OPTION comment to the top of the generated .${suffix} file
2623 open(TEMP, "> ${final}.${suffix}") || &tidy_up_and_die(1,"Can't open ${final}.${suffix}\n");
2624 print TEMP "/* OPTIONS " . join(' ',@File_options) . " */\n";
2626 print STDERR "Prepending OPTIONS: " . join(' ',@File_options) . " to ${final}.${suffix}\n" if $Verbose;
2628 $to_do = "$Cat $tmp >> ${final}.${suffix}";
2629 &run_something($to_do, "Saving copy of .${suffix} file");
2636 Command-line processor
2642 # can't use getopt(s); what we want is too complicated
2644 arg: while($_ = $Args[0]) {
2647 #---------- help -------------------------------------------------------
2648 if (/^-\?$/ || /^--?help$/) { print $LongUsage; exit $Status; }
2650 #-----------version ----------------------------------------------------
2651 /^--version$/ && do { print STDERR "${ProjectName}, version ${ProjectVersion}, patchlevel ${ProjectPatchLevel}\n"; exit $Status; };
2653 #---------- verbosity and such -----------------------------------------
2654 /^-v$/ && do { $Verbose = '-v'; $Time = 'time'; next arg; };
2656 #---------- what phases are to be run ----------------------------------
2657 /^-(no-)?recomp/ && do { $Do_recomp_chkr = ($1 eq '') ? 1 : 0; next arg; };
2659 /^-cpp$/ && do { $Cpp_flag_set = 1; next arg; };
2660 # change the global default:
2661 # we won't run cat; we'll run the real thing
2663 /^-C$/ && do { $Do_cc = 0; $Do_as = 0; $Do_lnkr = 0; $HscOut = '-C=';
2665 # stop after generating C
2667 /^-noC$/ && do { $HscOut = '-N='; $ProduceHi = '-nohifile=';
2668 $Do_cc = 0; $Do_as = 0; $Do_lnkr = 0;
2670 # leave out actual C generation (debugging) [also turns off interface gen]
2673 /^-hi$/ && do { $HiOnStdout = 1; $ProduceHi = '-hifile='; next arg; };
2674 # _do_ generate an interface; usually used as: -noC -hi
2675 /^-hi-with-(.*)$/ && do { $HiOnStdout = 1; $HiWith .= " $1" ; $ProduceHi = '-hifile='; next arg; };
2676 # limit ourselves to outputting a particular section.
2678 /^-nohi$/ && do { $ProduceHi = '-nohifile='; next arg; };
2679 # don't generate an interface (even if generating C)
2681 /^-hi-diffs$/ && do { $HiDiff_flag = 'normal'; next arg; };
2682 /^-hi-diffs-with-usages$/ && do { $HiDiff_flag = 'usages'; next arg; };
2683 /^-no-hi-diffs$/ && do { $HiDiff_flag = ''; next arg; };
2684 /^-keep-hi-diffs$/ && do { $Keep_HiDiffs = 1; next arg; };
2686 # show/disable diffs if the interface file changes
2688 /^-E$/ && do { push(@CcBoth_flags, '-E');
2689 $Only_preprocess_C = 1;
2690 $Do_as = 0; $Do_lnkr = 0; next arg; };
2691 # stop after preprocessing C
2692 /^-M$/ && do { $Only_generate_deps = 1; $Do_as = 0; $Do_lnkr = 0; next arg; };
2693 # only generate dependency information.
2694 /^-S$/ && do { $Do_as = 0; $Do_lnkr = 0; next arg; };
2695 # stop after generating assembler
2697 /^-c$/ && do { $Do_lnkr = 0; next arg; };
2698 # stop after generating .o files
2700 /^-link-chk$/ && do { $LinkChk = 1; next arg; };
2701 /^-no-link-chk$/ && do { $LinkChk = 0; next arg; };
2702 # don't do consistency-checking after a link
2704 /^-tmpdir$/ && do { $Tmp_prefix = &grab_arg_arg(*Args,'-tmpdir', '');
2705 $Tmp_prefix = "$Tmp_prefix/ghc$$";
2706 $ENV{'TMPDIR'} = $Tmp_prefix; # for those who use it...
2708 # use an alternate directory for temp files
2710 #---------- redirect output --------------------------------------------
2712 # -o <file>; applies to the last phase, whatever it is
2713 # "-o -" sends it to stdout
2714 # if <file> has a directory component, that dir must already exist
2716 /^-odir$/ && do { $Specific_output_dir = &grab_arg_arg(*Args,'-odir', '');
2718 # Hack, of the worst sort: don't do validation of
2719 # odir argument if you're using -M (dependency generation).
2721 if ( ! $Only_generate_deps && ! -d $Specific_output_dir) {
2722 print STDERR "$Pgm: -odir: no such directory: $Specific_output_dir\n";
2727 /^-o$/ && do { $Specific_output_file = &grab_arg_arg(*Args,'-o', '');
2728 if ($Specific_output_file ne '-'
2729 && $Specific_output_file =~ /(.*)\/[^\/]*$/) {
2730 local($dir_part) = $1;
2731 if (! -d $dir_part) {
2732 print STDERR "$Pgm: no such directory: $dir_part\n";
2738 # NB: -isuf not documented yet (because it doesn't work yet)
2739 /^-isuf$/ && do { $Isuffix = &grab_arg_arg(*Args,'-isuf', '');
2740 if ($Isuffix =~ /\./ ) {
2741 print STDERR "$Pgm: -isuf suffix shouldn't contain a .\n";
2746 /^-osuf$/ && do { $Osuffix = &grab_arg_arg(*Args,'-osuf', '');
2747 if ($Osuffix =~ /\./ ) {
2748 print STDERR "$Pgm: -osuf suffix shouldn't contain a .\n";
2753 # -ohi <file>; send the interface to <file>; "-ohi -" to send to stdout
2754 /^-ohi$/ && do { $Specific_hi_file = &grab_arg_arg(*Args,'-ohi', '');
2755 if ($Specific_hi_file ne '-'
2756 && $Specific_hi_file =~ /(.*)\/[^\/]*$/) {
2757 local($dir_part) = $1;
2758 if (! -d $dir_part) {
2759 print STDERR "$Pgm: no such directory: $dir_part\n";
2765 # The suffix to use when looking for interface files
2766 /^-hisuf$/ && do { $HiSuffix = &grab_arg_arg(*Args,'-hisuf', '');
2767 if ($HiSuffix =~ /\./ ) {
2768 print STDERR "$Pgm: -hisuf suffix shouldn't contain a .\n";
2772 # ToDo: remove, not a `normal' user thing to do (should be automatic)
2773 /^-hisuf-prelude$/ && do { $HiSuffix_prelude = &grab_arg_arg(*Args,'-hisuf-prelude', '');
2774 if ($HiSuffix =~ /\./ ) {
2775 print STDERR "$Pgm: -hisuf-prelude suffix shouldn't contain a .\n";
2779 /^-odump$/ && do { $Specific_dump_file = &grab_arg_arg(*Args,'-odump', '');
2780 if ($Specific_dump_file =~ /(.*)\/[^\/]*$/) {
2781 local($dir_part) = $1;
2782 if (! -d $dir_part) {
2783 print STDERR "$Pgm: no such directory: $dir_part\n";
2789 #-------------- scc & Profiling Stuff ----------------------------------
2791 /^-prof$/ && do { $PROFing = 'p'; next arg; }; # profiling -- details later!
2794 # generate auto SCCs on top level bindings
2795 # -auto-all = all top level bindings
2796 # -auto = only top level exported bindings
2797 $PROFauto = ( /-all/ )
2798 ? '-fauto-sccs-on-all-toplevs'
2799 : '-fauto-sccs-on-exported-toplevs';
2802 /^-caf-all/ && do { # generate individual CAF SCC annotations
2803 $PROFcaf = '-fauto-sccs-on-individual-cafs';
2806 /^-ignore-scc$/ && do {
2807 # forces ignore of scc annotations even if profiling
2808 $PROFignore_scc = '-W';
2811 /^-G(.*)$/ && do { push(@HsC_flags, "-G=$1"); # set group for cost centres
2814 /^-unprof-scc-auto/ && do {
2815 # generate auto SCCs on top level bindings when not profiling.
2816 # Used to measure optimisation effects of presence of sccs.
2817 $UNPROFscc_auto = ( /-all/ )
2818 ? '-fauto-sccs-on-all-toplevs'
2819 : '-fauto-sccs-on-exported-toplevs';
2822 #--------- ticky/concurrent/parallel -----------------------------------
2823 # we sort out the details a bit later on
2825 /^-concurrent$/ && do { $CONCURing = 'c'; &add_syslib('concurrent'); next arg; };
2826 # concurrent Haskell; implies -syslib conc
2827 /^-gransim$/ && do { $GRANing = 'g'; &add_syslib('concurrent'); next arg; }; # GranSim
2828 /^-ticky$/ && do { $TICKYing = 't'; next arg; }; # ticky-ticky
2829 /^-parallel$/ && do { $PARing = 'p'; &add_syslib('concurrent'); next arg; }; # parallel Haskell
2831 #-------------- "user ways" --------------------------------------------
2833 (/^-user-setup-([a-oA-Z])$/ ) &&
2835 /^-user-setup-([a-oA-Z])$/ && do { $BuildTag = "_$1"; };
2837 local($stuff) = $UserSetupOpts{$BuildTag};
2838 local(@opts) = split(/\s+/, $stuff);
2840 # feed relevant ops into the arg-processing loop (if any)
2841 unshift(@Args, @opts) if $#opts >= 0;
2845 #---------- set search paths for libraries and things ------------------
2847 # we do -i just like HBC (-i clears the list; -i<colon-separated-items>
2848 # prepends the items to the list); -I is for including C .h files.
2850 /^-i$/ && do { @Import_dir = (); # import path cleared!
2851 @SysImport_dir = ();
2852 print STDERR "WARNING: import paths cleared by `-i'\n";
2855 /^-i(.*)/ && do { local(@new_items)
2856 = split( /:/, &grab_arg_arg(*Args,'-i', $1));
2857 unshift(@Import_dir, @new_items);
2860 /^-I(.*)/ && do { push(@Include_dir, &grab_arg_arg(*Args,'-I', $1)); next arg; };
2861 /^-L(.*)/ && do { push(@UserLibrary_dir, &grab_arg_arg(*Args,'-L', $1)); next arg; };
2862 /^-l(.*)/ && do { push(@UserLibrary,'-l'.&grab_arg_arg(*Args,'-l', $1)); next arg; };
2864 /^-syslib(.*)/ && do { local($syslib) = &grab_arg_arg(*Args,'-syslib',$1);
2865 print STDERR "$Pgm: no such system library (-syslib): $syslib\n",
2866 $Status++ unless $syslib =~ /^(exts|misc|posix|concurrent|win32)$/;
2869 # The posix library is a `special' in that it relies on
2870 # the ghc system library (packed strings). Wielding our
2871 # sledgehammer, the problem is solved by silently including
2872 # the ghc system library as well.
2873 # (ToDo: `nub' -syslib list)
2875 &add_syslib($syslib);
2876 if ( $syslib eq 'posix' ) {
2877 &add_syslib('misc');
2878 } elsif ( $syslib eq 'misc' &&
2879 $TargetPlatform =~ /-solaris2$/ ) {
2880 # needed for Berkeley socket/nwork stuff.
2881 push(@SysLibrary, '-lnsl -lsocket');
2882 } elsif ( $syslib eq 'win32' &&
2883 $TargetPlatform =~ /-cygwin32$/ ) {
2884 # need to get at UI/Graphics functionality.
2885 push(@SysLibrary, '-luser32 -lgdi32');
2889 #=======================================================================
2890 # various flags that we can harmlessly send to one program or another
2891 # (we will later "reclaim" some of the compiler ones now sent to gcc)
2892 #=======================================================================
2894 #---------- this driver itself (ghc) -----------------------------------
2895 # these change what executable is run for each phase:
2896 /^-pgmL(.*)$/ && do { $Unlit = $1; next arg; };
2897 /^-pgmP(.*)$/ && do { $HsCpp = $1; next arg; };
2898 /^-pgmC(.*)$/ && do { $HsC = $1; next arg; };
2899 /^-pgmcO?(.*)$/ && do { $CcRegd = $1; next arg; }; # the O? for back compat
2900 /^-pgma(.*)$/ && do { $As = $1; next arg; };
2901 /^-pgml(.*)$/ && do { $Lnkr = $1; next arg; };
2902 /^-pgmdep(.*)$/ && do { $MkDependHS = $1; next arg; };
2904 #---------- the get-anything-through opts (all pgms) -------------------
2905 # these allow arbitrary option-strings to go to any phase:
2906 /^-optL(.*)$/ && do { push(@Unlit_flags, $1); next arg; };
2907 /^-optP(.*)$/ && do { push(@HsCpp_flags, $1); next arg; };
2908 /^-optCrts(.*)$/&& do { push(@HsC_rts_flags, $1); next arg; };
2909 /^-optC(.*)$/ && do { push(@HsC_flags, $1); next arg; };
2910 /^-optp(.*)$/ && do { push(@HsP_flags, $1); next arg; };
2911 /^-optcpp(.*)$/ && do { push(@Cpp_define, $1); $Only_preprocess_hc = ($1 eq "-E"); next arg; };
2912 /^-optc(.*)$/ && do { push(@CcBoth_flags, $1); next arg; };
2913 /^-opta(.*)$/ && do { push(@As_flags, $1); next arg; };
2914 /^-optl(.*)$/ && do { push(@Ld_flags, $1); next arg; };
2915 /^-optdep(.*)$/ && do { push(@MkDependHS_flags, $1); next arg; };
2917 #---------- Haskell C pre-processor (hscpp) ----------------------------
2918 /^-D(.*)/ && do { push(@HsCpp_flags, "'-D".&grab_arg_arg(*Args,'-D',$1)."'"); next arg; };
2919 /^-U(.*)/ && do { push(@HsCpp_flags, "'-U".&grab_arg_arg(*Args,'-U',$1)."'"); next arg; };
2921 #---------- post-Haskell "assembler"------------------------------------
2922 /^-ddump-raw-asm$/ && do { $Dump_raw_asm = 1; next arg; };
2923 /^-ddump-asm-splitting-info$/ && do { $Dump_asm_splitting_info = 1; next arg; };
2925 #---------- Haskell compiler (hsc) -------------------------------------
2927 /^-keep-hc-files?-too$/ && do { $Keep_hc_file_too = 1; next arg; };
2928 /^-keep-s-files?-too$/ && do { $Keep_s_file_too = 1; next arg; };
2930 /^-fhaskell-1\.3$/ && do { next arg; }; # a no-op right now
2932 /^-fignore-interface-pragmas$/ && do { push(@HsC_flags, $_); next arg; };
2934 /^-fno-implicit-prelude$/ && do { $NoImplicitPrelude= 1; push(@HsC_flags, $_); next arg; };
2935 # don't do stack checking using page fault `trick'.
2937 /^-fstack-check$/ && do { $StkChkByPageFaultOK = 0; next arg; };
2939 # have the compiler proper generate concurrent code,
2940 # really only used when you want to configure your own
2941 # special user compilation way. (Use -concurrent when
2942 # compiling `Concurrent Haskell' programs).
2944 # (ditto for -fgransim, fscc-profiling and -fticky-ticky)
2946 /^-fconcurrent$/ && do { push(@HsC_flags,$_); next arg; };
2947 /^-fscc-profiling$/ && do { push(@HsC_flags,$_); next arg; };
2948 /^-fticky-ticky$/ && do { push(@HsC_flags,$_); next arg; };
2949 /^-fgransim$/ && do { push(@HsC_flags,$_); next arg; };
2951 /^-split-objs/ && do {
2952 if ( $TargetPlatform !~ /^(alpha|hppa1\.1|i386|m68k|mips|powerpc|rs6000|sparc)-/ ) {
2954 print STDERR "WARNING: don't know how to split objects on this platform: $TargetPlatform\n`-split-objs' option ignored\n";
2959 push(@HsC_flags, "-fglobalise-toplev-names");
2960 push(@CcBoth_flags, '-DUSE_SPLIT_MARKERS');
2962 require('ghc-split.prl')
2963 || &tidy_up_and_die(1,"$Pgm: panic: can't load ghc-split.prl!\n");
2967 /^-fallow-overlapping-instances$/ && do { push(@HsC_flags, $_);
2970 && do { push(@HsC_flags, $_);
2971 push(@HsP_flags, '-N');
2973 # push(@HsC_flags, '-fshow-import-specs');
2975 # -fglasgow-exts implies -syslib exts
2976 &add_syslib('exts');
2980 /^-fspeciali[sz]e-unboxed$/
2981 && do { $Oopt_DoSpecialise = '-fspecialise';
2982 $Oopt_SpecialiseUnboxed = '-fspecialise-unboxed';
2985 && do { $Oopt_DoSpecialise = '-fspecialise'; next arg; };
2986 /^-fno-speciali[sz]e$/
2987 && do { $Oopt_DoSpecialise = ''; next arg; };
2990 # Now the foldr/build options, which are *on* by default (for -O).
2993 && do { $Oopt_FoldrBuild = 1;
2994 $Oopt_FB_Support = '-fdo-arity-expand';
2998 /^-fno-foldr-build$/
2999 && do { $Oopt_FoldrBuild = 0;
3000 $Oopt_FB_Support = '';
3003 /^-fno-foldr-build-rule$/
3004 && do { $Oopt_FoldrBuild = 0;
3007 /^-fno-enable-tech$/
3008 && do { $Oopt_FB_Support = '';
3011 /^-fno-snapback-to-append$/
3012 && do { $Oopt_FoldrBuildInline .= ' -fdo-not-fold-back-append ';
3015 # --------------- Renamer -------------
3018 /^-fno-prune-tydecls$/ && do { push(@HsC_flags, $_); next arg; };
3019 /^-fno-prune-instdecls$/ && do { push(@HsC_flags, $_); next arg; };
3023 /^-fasm-(.*)$/ && do { $HscOut = '-S='; next arg; }; # force using nativeGen
3024 /^-fvia-[cC]$/ && do { $HscOut = '-C='; next arg; }; # force using C compiler
3029 && do { push(@HsC_flags, $_); next arg };
3031 /^-funfold-casms-in-hi-file$/
3032 && do { push(@HsC_flags, $_); next arg };
3034 /^(-fmax-simplifier-iterations)(.*)$/
3035 && do { $Oopt_MaxSimplifierIterations = $1 . &grab_arg_arg(*Args,$1, $2);
3037 /^(-fshow-simplifier-progress)/
3038 && do { $Oopt_ShowSimplifierProgress = $1;
3041 /^-fno-pedantic-bottoms$/
3042 && do { $Oopt_PedanticBottoms = ''; next arg; };
3044 /^-fdo-monad-eta-expansion$/
3045 && do { $Oopt_MonadEtaExpansion = $_; next arg; };
3047 /^-fno-let-from-(case|app|strict-let)$/ # experimental, really (WDP 95/10)
3048 && do { push(@HsC_flags, $_); next arg; };
3050 /^(-freturn-in-regs-threshold)(.*)$/
3051 && do { local($what) = $1;
3052 local($num) = &grab_arg_arg(*Args,$what, $2);
3053 if ($num < 2 || $num > 8) {
3054 die "Bad experimental flag: $_\n";
3056 $HscOut = '-C='; # force using C compiler
3057 push(@HsC_flags, "$what$num");
3058 push(@CcRegd_flags, "-D__STG_REGS_AVAIL__=$num");
3062 # --------------- Warnings etc. ------
3064 /^-fshow-import-specs/
3065 && do { push(@HsC_flags, $_); next arg; };
3067 /^-fsignatures-required/
3068 && do { push(@HsC_flags, $_); next arg; };
3070 /^-fwarn-(.*)$/ && do { push(@HsC_flags, $_); next arg; };
3072 /^-fno-(.*)$/ && do { push(@HsC_antiflags, "-f$1");
3073 &squashHscFlag("-f$1");
3076 /^-W$/ && do { push(@HsC_flags, @MinusWOpts); next arg; };
3077 /^-Wall$/ && do { push(@HsC_flags, @MinusWallOpts); next arg; };
3078 /^(-Wnot|w)$/ && do { foreach (@Hsc_flags) {
3079 /^-fwarn-(.*)$/ && do { $_=''; };
3081 push(@HsC_antiflags, @StandardWarnings);
3084 # --------------- fun stuff ----------------
3086 /^-freport-compile$/ && do { push(@HsC_flags, $_); next arg; };
3088 # --------------- platform specific flags (for gcc mostly) ----------------
3090 /^-mlong-calls$/ && do { # for GCC for HP-PA boxes,
3091 # for 2.6.x..?, does not apply for 2.7.2
3093 unshift(@CcBoth_flags, ( $_ ));
3096 /^-m(v8|sparclite|cypress|supersparc|cpu=(cypress|supersparc))$/
3097 && do { # for GCC for SPARCs
3098 unshift(@CcBoth_flags, ( $_ ));
3101 /^-monly-([432])-regs/ && do { # for iX86 boxes only; no effect otherwise
3102 $StolenX86Regs = $1;
3105 #*************** ... and lots of debugging ones (form: -d* )
3107 # -d(no-)core-lint is done this way so it is turn-off-able.
3108 /^-dcore-lint/ && do { $CoreLint = '-dcore-lint'; next arg; };
3109 /^-dno-core-lint/ && do { $CoreLint = ''; next arg; };
3110 # Ditto for STG lint
3111 /^-dstg-lint/ && do { $StgLint = '-dstg-lint'; next arg; };
3112 /^-dno-stg-lint/ && do { $StgLint = ''; next arg; };
3114 /^-d(dump|ppr)-/ && do { push(@HsC_flags, $_); next arg; };
3115 /^-dverbose-(simpl|stg)/ && do { push(@HsC_flags, $_); next arg; };
3116 /^-dshow-passes/ && do { push(@HsC_flags, $_); next arg; };
3117 /^-dshow-rn-stats/ && do { push(@HsC_flags, $_); next arg; };
3118 /^-dshow-rn-trace/ && do { push(@HsC_flags, $_); next arg; };
3119 /^-dsource-stats/ && do { push(@HsC_flags, $_); next arg; };
3120 /^-dsimplifier-stats/ && do { push(@HsC_flags, $_); next arg; };
3121 /^-dstg-stats/ && do { $Oopt_StgStats = $_; next arg; };
3123 #*************** ... and now all these -R* ones for its runtime system...
3125 /^-Rscale-sizes?(.*)/ && do {
3126 $Scale_sizes_by = &grab_arg_arg(*Args,'-Rscale-sizes', $1);
3129 /^(-H|-Rmax-heapsize)(.*)/ && do {
3130 local($heap_size) = &grab_arg_arg(*Args,$1, $2);
3131 if ($heap_size =~ /(\d+)[Kk]$/) {
3132 $heap_size = $1 * 1000;
3133 } elsif ($heap_size =~ /(\d+)[Mm]$/) {
3134 $heap_size = $1 * 1000 * 1000;
3135 } elsif ($heap_size =~ /(\d+)[Gg]$/) {
3136 $heap_size = $1 * 1000 * 1000 * 1000;
3138 if ($heap_size <= 0) {
3139 print STDERR "$Pgm: resetting heap-size to zero!!! $heap_size\n";
3140 $Specific_heap_size = 0;
3142 # if several heap sizes given, take the largest...
3143 } elsif ($heap_size >= $Specific_heap_size) {
3144 $Specific_heap_size = $heap_size;
3146 print STDERR "$Pgm: ignoring heap-size-setting option ($_)...not the largest seen\n";
3150 /^(-K|Rmax-(stk|stack)size)(.*)/ && do {
3152 local($stk_size) = &grab_arg_arg(*Args,'-Rmax-stksize', $3);
3153 if ($stk_size =~ /(\d+)[Kk]$/) {
3154 $stk_size = $1 * 1000;
3155 } elsif ($stk_size =~ /(\d+)[Mm]$/) {
3156 $stk_size = $1 * 1000 * 1000;
3157 } elsif ($stk_size =~ /(\d+)[Gg]$/) {
3158 $stk_size = $1 * 1000 * 1000 * 1000;
3160 if ($stk_size <= 0) {
3161 print STDERR "$Pgm: resetting stack-size to zero!!! $stk_size\n";
3162 $Specific_stk_size = 0;
3164 # if several stack sizes given, take the largest...
3165 } elsif ($stk_size >= $Specific_stk_size) {
3166 $Specific_stk_size = $stk_size;
3168 print STDERR "$Pgm: ignoring stack-size-setting option ($flag $stk_size)...not the largest seen\n";
3172 /^-Rgc-stats$/ && do { $CollectingGCstats++;
3173 # the two RTSs do this diff ways; we will try to compensate
3176 /^-Rghc-timing/ && do { $CollectGhcTimings = 1; next arg; };
3178 #---------- C high-level assembler (gcc) -------------------------------
3179 /^-(Wall|ansi|pedantic)$/ && do { push(@CcBoth_flags, $_); next arg; };
3181 # -dgcc-lint is a useful way of making GCC very fussy.
3182 # From alan@spri.levels.unisa.edu.au (Alan Modra).
3183 /^-dgcc-lint$/ && do { push(@CcBoth_flags, '-Wall -Wpointer-arith -Wbad-function-cast -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -Wnested-externs'); next arg; };
3184 # An alternate set, from mark@sgcs.com (Mark W. Snitily)
3185 # -Wall -Wstrict-prototypes -Wmissing-prototypes -Wcast-align -Wshadow
3187 # inject "#include <wurble>" into the compiler's C output!
3189 /^-#include(.*)/ && do {
3190 local($to_include) = &grab_arg_arg(*Args,'-#include', $1);
3191 push(@CcInjects, "#include $to_include\n");
3194 #---------- Linker (gcc, really) ---------------------------------------
3196 /^-static$/ && do { push(@Ld_flags, $_); next arg; };
3198 #---------- mixed cc and linker magic ----------------------------------
3199 # this optimisation stuff is finally sorted out later on...
3201 /^-O2-for-C$/ && do { $MinusO2ForC = 1; next arg; };
3203 /^-O[1-2]?$/ && do {
3204 local($opt_lev) = ( /^-O2$/ ) ? 2 : 1; # max 'em
3205 $OptLevel = ( $opt_lev > $OptLevel ) ? $opt_lev : $OptLevel;
3207 $HscOut = '-C=' if $OptLevel == 2; # force use of C compiler
3210 /^-Onot$/ && do { $OptLevel = 0; next arg; }; # # set it to <no opt>
3212 /^-Ofile(.*)/ && do {
3214 local($ofile) = &grab_arg_arg(*Args,'-Ofile', $1);
3215 @HsC_minusO3_flags = ();
3217 open(OFILE, "< $ofile") || die "Can't open $ofile!\n";
3220 s/\#.*//; # death to comments
3221 s/[ \t]+//g; # death to whitespace
3222 next if /^$/; # ditto, blank lines
3223 s/([()*{}])/\\$1/g; # protect shell metacharacters
3225 push(@CcBoth_flags, $1);
3227 push(@HsC_minusO3_flags, $_);
3233 /^-debug$/ && do { # all this does is mark a .hc/.o as "debugging"
3234 # in the consistency info
3238 #---------- linking .a file --------------------------------------------
3240 /^-Main(.*)/ && do {
3241 # specifies main or mainPrimIO to be linked
3245 #---------- catch unrecognized flags -----------------------------------
3248 print STDERR "$Pgm: unrecognised option: $_\n";
3254 } # end of processArgs