2 # perl script expect the following variables to be prepended:
4 # RAWCPP TMPDIR TOP_PWD
5 # INSTALL_LIB_DIR INSTALL_DATA_DIR INSTALL_HSLIBS_DIR INSTALLING
8 # tries to work like mkdependC - capable of dealing with:
10 # -literate Haskell code (Bird tracks or Glasgow literate style) (.lhs)
11 # -straight Haskell source (.hs)
12 # -literate or straight Happy specs (.ly)
14 # ToDo: strip out all the .h junk
16 ($Pgm = $0) =~ s/.*\/([^\/]+)$/\1/;
18 Usage: $Pgm [mkdependHS options] [-- GHC options --] srcfile1 [srcfile2 ...]
20 Options recognised wherever they occur (mkdependHS or GHC):
22 -D<blah> A cpp #define; usual meaning
23 -i<dirs> Add <dirs> (colon-separated) to list of directories
24 to search for "import"ed modules
25 -I<dir> Add <dir> to list of directories to search for
26 .h files (i.e., usual meaning)
27 -syslib <blah> This program uses this GHC system library; take
28 appropriate action (e.g., recognise when they are
29 "import"ing a module from that library).
30 -fhaskell1.[2-9] Deal with the oddities associated with a
31 particular version of Haskell 1.
33 mkdependHS-specific options (not between --'s):
36 -v -v Be very verbose.
37 -f blah Use "blah" as the makefile, rather than "makefile"
39 -o <osuf> Use <osuf> as the "object file" suffix ( default: .o)
40 -s <suf> Make extra dependencies for files with
41 suffix <suf><osuf>; thus, "-o .hc -s _a" will
42 make dependencies both for .hc files and for _a.hc
43 files. (Useful in conjunction with NoFib "ways".)
44 --exclude-module=<file>
45 Regard <file> as "stable"; i.e., eXclude it from having
47 -x same as --exclude-module
48 --exclude-directory=<dirs>
49 Regard : separated list of directories as containing stable,
50 don't generate any dependencies on modules therein.
51 -Xdirs same as --exclude-directory
52 --include-module=<file>
53 Regard <file> as not "stable"; i.e., generate dependencies
54 on it (if any). This option is normally used in conjunction
55 with the --exclude-directory option.
59 $Status = 0; # just used for exit() status
60 $Verbose = 0; # 1 => verbose, 2 => very verbose
63 # Try to guess how to run gcc's CPP directly -------------
66 if ( $OrigCpp !~ /(\S+)\s+(.*)/ ) {
71 if ( -x $cmd ) { # cool
73 } else { # oops; try to guess
74 $GccV = `gcc -v 2>&1`;
75 if ( $GccV =~ /Reading specs from (.*)\/specs/ ) {
76 $Cpp = "$1/cpp $rest";
78 die "hscpp: don't know how to run cpp: $OrigCpp\n";
83 if ( $ENV{'TMPDIR'} ) { # where to make tmp file names
84 $Tmp_prefix = $ENV{'TMPDIR'} . "/mkdependHS$$";
86 $Tmp_prefix ="${TMPDIR}/mkdependHS$$";
87 $ENV{'TMPDIR'} = "${TMPDIR}"; # set the env var as well
90 #------------------------------------------------------------------------
91 # If you are adjusting paths by hand for a binary GHC distribution,
92 # de-commenting the line to set GLASGOW_HASKELL_ROOT should do.
93 # Or you can leave it as is, and set the environment variable externally.
94 #------------------------------------------------------------------------
95 # $ENV{'GLASGOW_HASKELL_ROOT'} = '/some/absolute/path/name';
97 if (! $ENV{'GLASGOW_HASKELL_ROOT'}) { # good -- death to environment variables
99 $InstLibDirGhc = ${INSTALL_LIB_DIR};
100 $InstDataDirGhc = ${INSTALL_DATA_DIR};
102 $TopPwd = $ENV{'GLASGOW_HASKELL_ROOT'};
104 if (${INSTALL_LIB_DIR} =~ /.*(\/lib\/ghc\/\d\.\d\d\/[^-]+-[^-]+-[^-]+\/.*)/) {
105 $InstLibDirGhc = $ENV{'GLASGOW_HASKELL_ROOT'} . $1;
107 print STDERR "GLASGOW_HASKELL_ROOT environment variable is set;\nBut can't untangle ${INSTALL_LIB_DIR}.\n(Installation error)\n";
111 if (${INSTAL_DATA_DIR} =~ /.*(\/lib\/ghc\/\d\.\d\d\/.*)/) {
112 $InstDataDirGhc = $ENV{'GLASGOW_HASKELL_ROOT'} . $2;
114 print STDERR "GLASGOW_HASKELL_ROOT environment variable is set;\nBut can't untangle ${INSTALL_DATA_DIR}.\n(Installation error)\n";
119 $Unlit = ${UNLIT_PROG};
121 $Begin_magic_str = "# DO NOT DELETE: Beginning of Haskell dependencies\n";
122 $End_magic_str = "# DO NOT DELETE: End of Haskell dependencies\n";
124 $ghc_version_info = int ( ${PROJECTVERSION} * 100 );
128 %LibIfaces = (); # known prelude/syslib ifaces; read from a file
131 # directories to considered stable.
132 @Ignore_dirs = split(/:/,${PRELUDE_DIRS});
134 # ($INSTALLING) ? ("$InstLibDirGhc/imports")
135 # : ("$TopPwd/ghc/lib/ghc",
136 # "$TopPwd/ghc/lib/required",
137 # "$TopPwd/ghc/lib/glaExts",
138 # "$TopPwd/ghc/lib/concurrent");
140 $Haskell_1 = 3; # assume Haskell 1.3. Changed by -fhaskell-1.?
141 $Include_dirs = '-I.';
145 &mangle_command_line_args();
147 # set up array of ignored modules
148 foreach $lib ( @Syslibs ) {
150 ($INSTALLING) ? "${INSTALL_HSLIBS_DIR}/${lib}/imports"
151 : "$TopPwd/hslibs/${lib}/src";
152 push(@Ignore_dirs,$dir);
161 ("-D__HASKELL1__=$Haskell_1",
162 "-D__GLASGOW_HASKELL__=$ghc_version_info"));
164 @Import_dirs = split(/:/,$Import_dirs);
165 @Include_dirs = split(/\s+/,$Include_dirs); # still has -I's in it
166 # NB: We keep the scalar-variable equivalents to use in error messages
168 if ( ! $Makefile && -f 'makefile' ) {
169 $Makefile = 'makefile';
170 } elsif ( ! $Makefile && -f 'Makefile') {
171 $Makefile = 'Makefile';
172 } elsif ( ! $Makefile) {
173 die "$Pgm: no makefile or Makefile found\n";
176 print STDERR "CPP defines=@Defines\n" if $Verbose;
177 print STDERR "Import_dirs=@Import_dirs\n" if $Verbose;
178 print STDERR "Include_dirs=@Include_dirs\n" if $Verbose;
180 &preprocess_import_dirs();
184 foreach $sf (@Src_files) {
185 # just like lit-inputter
186 # except it puts each file through CPP and
187 # a de-commenter (not implemented);
188 # builds up @Depend_lines
189 print STDERR "Here we go for source file: $sf\n" if $Verbose;
190 ($bf = $sf) =~ s/\.l?(hs|y)$//;
191 #push(@Depend_lines, "$bf.$Obj_suffix $bf.hi : $sf\n");
192 push(@Depend_lines, "$bf.$Obj_suffix : $sf\n");
193 foreach $suff (@File_suffix) {
194 push(@Depend_lines, "$bf.${suff}_$Obj_suffix : $sf\n");
197 # if it's a literate file, .lhs or .ly? (happy specs), then we de-literatize it:
198 if ( $sf !~ /\.l(hs|y)$/ ) {
201 $file_to_read = "$Tmp_prefix.hs";
202 local($to_do) = "$Unlit $sf $file_to_read";
203 &run_something($to_do, 'unlit');
205 &slurp_file_for_imports($file_to_read, $sf);
207 if ( $sf =~ /\.l(hs|y)$/ ) {
208 unlink "$Tmp_prefix.hs";
212 # OK, mangle the Makefile
213 unlink("$Makefile.bak");
216 # If no output file exist as yet, create one.
218 if ( ! -f $Makefile.bak ) {
219 system("touch $Makefile.bak");
221 rename($Makefile,"$Makefile.bak");
223 # now copy Makefile.bak into Makefile, rm'ing old dependencies
225 open(OMKF,"< $Makefile.bak") || die "$Pgm: can't open $Makefile.bak: $!\n";
226 open(NMKF,"> $Makefile") || die "$Pgm: can't open $Makefile: $!\n";
229 while ($_ && $_ ne $Begin_magic_str) { # copy through, 'til Begin_magic_str
233 while ($_ && $_ ne $End_magic_str) { # delete 'til End_magic_str
236 # insert dependencies
237 print $Begin_magic_str;
239 print $End_magic_str;
240 while (<OMKF>) { # copy the rest through
243 close(NMKF) || exit(1);
244 close(OMKF) || exit(1);
247 sub mangle_command_line_args {
248 while($_ = $ARGV[0]) {
254 } elsif ( /^-D(.*)/ ) { # recognized wherever they occur
256 } elsif ( /^-i(.*)/ ) {
257 $Import_dirs .= ":$1";
259 $Include_dirs .= " $_";
260 } elsif ( /^-syslib$/ ) {
261 push(@Syslibs, &grab_arg_arg($_,''));
262 } elsif ( /^-fhaskell-1\.([2-9])/ ) {
264 } elsif ($Dashdashes_seen != 1) { # not between -- ... --
267 } elsif ( /^-f(.*)/ ) {
268 $Makefile = &grab_arg_arg('-f',$1);
269 } elsif ( /^-o(.*)/ ) {
270 $Obj_suffix = &grab_arg_arg('-o',$1);
272 # --exclude-module=mod => it's stable, trust me!
274 } elsif ( /^-(x|-exclude-module=)(.*)/ ) {
275 local($thing) = &grab_arg_arg($1,$2);
276 $IgnoreMe{$thing} = 'y';
277 } elsif ( /^-(X|-exclude-directory=)(.*)/ ) {
278 foreach $d ( split(/:/,&grab_arg_arg($1, $2)) ) {
279 push(@Ignore_dirs,"$d");
281 } elsif ( /^--include-module=(.*)/ ) {
282 local($thing) = &grab_arg_arg($1,$2);
283 $IgnoreMe{$thing} = 'n';
284 } elsif ( /^-s(.*)/ ) {
285 local($suff) = &grab_arg_arg('-s',$1);
286 push(@File_suffix, $suff);
288 print STDERR "$Pgm: unknown option ignored: $_\n";
291 push(@Src_files, $_);
294 } elsif ($Dashdashes_seen == 1) { # where we ignore unknown options
295 push(@Src_files, $_) if ! /^-/;
298 @File_suffix = sort (@File_suffix);
302 local($option, $rest_of_arg) = @_;
305 return($rest_of_arg);
306 } elsif ($#ARGV >= 0) {
307 local($temp) = $ARGV[0]; shift(@ARGV);
310 print STDERR "$Pgm: no argument following $option option\n";
315 sub preprocess_import_dirs {
316 # it's probably cheaper to find out what's in all
317 # the @Import_dirs before we start processing.
322 foreach $d ( @Import_dirs ) {
323 # Check to see if it can be ignored
324 #print STDERR "Ignore imports from $d\n" if $Verbose && $Ignore_dirs{$d};
325 #next if $Ignore_dirs{$d};
327 opendir(DIR, $d) || die "$Pgm: can't open directory $d\n";
329 for ($_ = readdir(DIR); $_; $_ = readdir(DIR)) {
330 next unless /(.*)\.hi$/;
332 if ($ModuleIn{$thing} && $ModuleIn{$thing} ne $d) {
333 print STDERR "$Pgm: warning: $thing.hi appears in both $ModuleIn{$thing} and $d!\n";
335 $ModuleIn{$thing} = $d;
338 closedir(DIR); # No, don't check the error code
341 # Add all the modules
342 # to the IgnoreMe array before we start scanning for imports.
343 foreach $d (@Ignore_dirs) {
345 opendir(DIR, $d) || die "$Pgm: can't open directory $d\n";
347 for ($_ = readdir(DIR); $_; $_ = readdir(DIR)) {
348 next unless /(.*)\.(hi|l?hs|l?y)$/;
349 #don't tag it twice or overwrite it with a diff. value
350 next if $IgnoreMe{$1};
351 print STDERR "Module $d/$1.$2 will be ignored\n" if $Verbose;
355 closedir(DIR); # No, don't check the error code
359 sub slurp_file_for_imports {
360 local($file_to_read, $orig_src_file) = @_;
363 local($last_seen_dir) = $orig_src_file;
364 $last_seen_dir =~ s/\/[^\/]+$//; # strip to dir name
365 $last_seen_dir = '.' if ($last_seen_dir eq $orig_src_file);
367 # we mangle #include's so they will also leave something
368 # behind to indicate the dependency on _them_
370 print STDERR "${SED} -e '/^# *include/{p;s/^# *include/!include/;};s/'\\''//g;s/\"//g' $file_to_read | $Cpp $Include_dirs -I$last_seen_dir @Defines |\n" if $Verbose;
372 open(SRCFILE, "${SED} -e '/^# *include/{p;s/^# *include/!include/;};s/'\\''//g;s/\"//g' $file_to_read | $Cpp $Include_dirs -I$last_seen_dir @Defines |")
373 || die "$Pgm: Can't open $file_to_read: $!\n";
377 # import {-# SOURCE #-} Foo (bar) generates dependencies on the source file only,
378 # the compiler will deal with the absence of Foo.hi by consulting the
379 # source for Foo directly. (for dealing with recursive modules).
381 next unless (/^>?\s*(import)(\s+{-#\s*SOURCE\s*#-})?(\s+qualified)?\s+([A-Z][A-Za-z0-9_']*)/ || /^!(include)(\s+)"(\S+)"/);
383 $source = ( $2 ne '') ? 1 : 0;
386 next if $modname eq '';
387 if ($todo eq 'import') {
388 if ( $ModuleIn{$modname} ) {
389 $follow_file = "$ModuleIn{$modname}/$modname.hi";
392 = &find_in_Import_dirs($orig_src_file, $modname, $last_seen_dir );
396 = &find_in_Include_dirs($orig_src_file, $modname, $last_seen_dir);
399 if (! $follow_file) { # it didnae find anything
400 die "$orig_src_file: Couldn't handle: $_\n";
402 } else { # it found something
403 if ($follow_file ne '__ignore__') {
405 $int_file = $follow_file;
407 if ( $int_file !~ /\.(l?hs|hi|l?y)$/ ) {
408 push(@Depend_lines, "$bf.$Obj_suffix : $int_file\n");
409 foreach $suff (@File_suffix) {
410 push(@Depend_lines, "$bf.${suff}_$Obj_suffix : $int_file\n");
414 $int_file =~ s/\.l?hs$//;
415 $int_file =~ s/\.l?y$//;
416 $int_file =~ s/\.hi$//;
419 if ( $source && -f "$int_file.hs" ) {
420 $source_dep = "$int_file.hs";
421 push(@Depend_lines, "$bf.$Obj_suffix : $source_dep\n");
422 } elsif ( $source && -f "$int_file.lhs" ) {
423 $source_dep = "$int_file.lhs";
424 push(@Depend_lines, "$bf.$Obj_suffix : $source_dep\n");
425 } elsif ( $source && ( -f "$int_file.ly" || -f "$int_file.y" ) ) {
426 $source_dep = "$int_file.hs";
427 push(@Depend_lines, "$bf.$Obj_suffix : $source_dep\n");
430 print STDERR "Warning: could not find source file dependency $int_file.(hs|lhs|y|ly)\n";
432 push(@Depend_lines, "$bf.$Obj_suffix : $int_file.hi\n");
436 foreach $suff (@File_suffix) {
437 push(@Depend_lines, "$bf.${suff}_$Obj_suffix : $int_file.${suff}_hi\n");
440 foreach $suff (@File_suffix) {
441 push(@Depend_lines, "$bf.${suff}_$Obj_suffix : $source_dep\n");
448 close(SRCFILE) || exit(1);
451 # when we see something, we cache that fact ('y').
452 # also, when we get a miss, we cache that (so we don't try later); ('n')
455 sub find_in_Import_dirs {
456 local($orig_src_file, $modname, $last_seen_dir, $source) = @_;
458 local($do_magical_check) = 0;
459 local($name_to_check);
461 # do it the old hard way: hop along Import_dir list
462 foreach $import_dir (@Import_dirs) {
464 if ($import_dir eq '.') {
465 # record that we should do a SPECIAL try for a file in last_seen_dir (LAST)
466 $do_magical_check = 1;
469 $name_to_check = "$import_dir/$modname.hi";
470 if ( $FileExists{$name_to_check} ne 'n' ) { # either 'y' or nothing
471 print STDERR "trying $name_to_check...\n" if $Verbose >= 2; # very verbose
472 return($name_to_check) if $FileExists{$name_to_check} eq 'y';
473 if (-f $name_to_check) {
474 $FileExists{$name_to_check} = 'y';
475 return($name_to_check) ;
477 $FileExists{$name_to_check} = 'n';
481 for $suff ('hs', 'lhs', 'ly', 'y') {
482 $name_to_check = "$import_dir/$modname.$suff";
483 print STDERR "trying... $name_to_check\n" if $Verbose >= 2; # very verbose
484 return($name_to_check) if -f $name_to_check;
487 if ($do_magical_check == 1) {
488 $name_to_check = "$last_seen_dir/$modname.hi";
490 if ( $FileExists{$name_to_check} ne 'n' ) { # either 'y' or nothing
491 print STDERR "trying $name_to_check...\n" if $Verbose >= 2; # very verbose
492 return($name_to_check) if $FileExists{$name_to_check} eq 'y';
493 if (-f $name_to_check) {
494 $FileExists{$name_to_check} = 'y';
495 return($name_to_check) ;
497 $FileExists{$name_to_check} = 'n';
501 for $suff ('lhs', 'hs', 'ly', 'y') {
502 $name_to_check = "$last_seen_dir/$modname.$suff";
503 print STDERR "trying... $name_to_check\n" if $Verbose >= 2; # very verbose
504 return($name_to_check) if -f $name_to_check;
508 # OK, maybe it's referring to something in a system library
509 #foreach $lib ( @Syslibs ) {
510 # return('__ignore__') if $LibIfaces{"$lib:$modname"};
513 # Last hope: referring to a Prelude interface
514 return('__ignore__') if ( $IgnoreMe{$modname} eq 'y' );
516 die "No file `$modname.hi', `$modname.lhs', `$modname.hs' (reqd from file `$orig_src_file')\namong import directories:\n\t$Import_dirs\n";
519 sub find_in_Include_dirs {
520 local($orig_src_file, $name, $last_seen_dir) = @_;
522 local($do_magical_check) = 0;
524 # no funny name guessing here
526 # hop along Include_dir list
527 foreach $include_dir (@Include_dirs) {
528 $include_dir =~ s/^-I//;
531 if ($include_dir eq '.') {
532 # record that we should do a SPECIAL try for a file in last_seen_dir (LAST)
533 $do_magical_check = 1;
535 print STDERR "trying $include_dir/$name...\n" if $Verbose >= 2; # very verbose
536 if (-f "$include_dir/$name") {
537 return("$include_dir/$name");
540 if ($do_magical_check == 1) {
541 print STDERR "trying $last_seen_dir/$name...\n" if $Verbose >= 2; # very verbose
542 if (-f "$last_seen_dir/$name") {
543 return("$last_seen_dir/$name");
546 die "No file `$name' (reqd from file `$orig_src_file') among include directories: $Include_dirs\n";
549 # out of the driver, actually
551 local($str_to_do, $tidy_name) = @_;
553 print STDERR "\n$tidy_name:\n\t" if $Verbose;
554 print STDERR "$str_to_do\n" if $Verbose;
556 local($return_val) = system($str_to_do) >> 8;
558 if ($return_val != 0) {
559 local($die_msg) = "$Pgm: execution of the $tidy_name had trouble";
560 $die_msg .= " (program not found)" if $return_val == 255;
561 $die_msg .= " ($!)" if $Verbose && $! != 0;
563 print STDERR $die_msg;