2 # perl script expect the following variables to be prepended:
4 # RAWCPP TMPDIR TOP_PWD
5 # libdir libexecdir datadir 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).
31 mkdependHS-specific options (not between --'s):
34 -v -v Be very verbose.
35 -f blah Use "blah" as the makefile, rather than "makefile"
37 -o <osuf> Use <osuf> as the "object file" suffix ( default: o)
38 -s <suf> Make extra dependencies for files with
39 suffix <suf><osuf>; thus, "-o hc -s _a" will
40 make dependencies both for .hc files and for .a_hc
41 files. (Useful in conjunction with NoFib "ways".)
42 --exclude-module=<file>
43 Regard <file> as "stable"; i.e., eXclude it from having
45 -x same as --exclude-module
46 --exclude-directory=<dirs>
47 Regard : separated list of directories as containing stable,
48 don't generate any dependencies on modules therein.
49 -Xdirs same as --exclude-directory
50 --include-module=<file>
51 Regard <file> as not "stable"; i.e., generate dependencies
52 on it (if any). This option is normally used in conjunction
53 with the --exclude-directory option.
57 $Status = 0; # just used for exit() status
58 $Verbose = 0; # 1 => verbose, 2 => very verbose
61 # Try to guess how to run gcc's CPP directly -------------
64 if ( $OrigCpp !~ /(\S+)\s+(.*)/ ) {
69 if ( -x $cmd ) { # cool
71 } else { # oops; try to guess
72 $GccV = `gcc -v 2>&1`;
73 if ( $GccV =~ /Reading specs from (.*)\/specs/ ) {
74 $Cpp = "$1/cpp $rest";
76 die "hscpp: don't know how to run cpp: $OrigCpp\n";
81 if ( $ENV{'TMPDIR'} ) { # where to make tmp file names
82 $Tmp_prefix = $ENV{'TMPDIR'} . "/mkdependHS$$";
84 $Tmp_prefix ="${TMPDIR}/mkdependHS$$";
85 $ENV{'TMPDIR'} = "${TMPDIR}"; # set the env var as well
88 $TopPwd = "${TOP_PWD}";
89 $InstLibDirGhc = "${libdir}";
90 $InstLibExecDirGhc = "${libexecdir}";
91 $InstHsLibDirGhc = "${libdir}/hslibs";
92 $InstDataDirGhc = "${datadir}";
94 $Unlit = ($INSTALLING) ? "${InstLibExecDirGhc}/unlit"
95 : "${TopPwd}/ghc/utils/unlit/unlit";
97 $Begin_magic_str = "# DO NOT DELETE: Beginning of Haskell dependencies\n";
98 $End_magic_str = "# DO NOT DELETE: End of Haskell dependencies\n";
101 $ghc_version_info = int ( ${PROJECTVERSION} * 100 );
105 %LibIfaces = (); # known prelude/syslib ifaces; read from a file
108 # directories to considered stable.
109 @Ignore_dirs = ($INSTALLING) ?
110 ("$InstLibDirGhc/imports")
111 : ("$TopPwd/ghc/lib/ghc",
112 "$TopPwd/ghc/lib/required",
113 "$TopPwd/ghc/lib/glaExts",
114 "$TopPwd/ghc/lib/concurrent");
116 $Include_dirs = '-I.';
120 &mangle_command_line_args();
122 # set up array of ignored modules
123 foreach $lib ( @Syslibs ) {
125 ($INSTALLING) ? "${InstHsLibDirGhc}/${lib}/imports"
126 : "${TopPwd}/hslibs/${lib}/src";
127 push(@Ignore_dirs,$dir);
136 ( #OLD: "-D__HASKELL1__=$Haskell_1",
137 "-D__GLASGOW_HASKELL__=$ghc_version_info"));
139 @Import_dirs = split(/:/,$Import_dirs);
140 @Include_dirs = split(/\s+/,$Include_dirs); # still has -I's in it
141 # NB: We keep the scalar-variable equivalents to use in error messages
143 if ( ! $Makefile && -f 'makefile' ) {
144 $Makefile = 'makefile';
145 } elsif ( ! $Makefile && -f 'Makefile') {
146 $Makefile = 'Makefile';
147 } elsif ( ! $Makefile) {
148 die "$Pgm: no makefile or Makefile found\n";
151 print STDERR "CPP defines=@Defines\n" if $Verbose;
152 print STDERR "Import_dirs=@Import_dirs\n" if $Verbose;
153 print STDERR "Include_dirs=@Include_dirs\n" if $Verbose;
155 &preprocess_import_dirs();
159 # Delete temp. file if script is halted.
160 sub quit_upon_signal { print STDERR "Deleting $Tmp_prefix.hs .. \n"; unlink "$Tmp_prefix.hs"; }
161 $SIG{'INT'} = 'quit_upon_signal';
162 $SIG{'QUIT'} = 'quit_upon_signal';
164 foreach $sf (@Src_files) {
166 # just like lit-inputter
167 # except it puts each file through CPP and
168 # a de-commenter (not implemented);
169 # builds up @Depend_lines
170 print STDERR "Here we go for source file: $sf\n" if $Verbose;
171 ($bf = $sf) =~ s/\.l?(hs|y)$//;
174 foreach $obj (@Obj_suffix) {
176 foreach $suff (@File_suffix) {
177 $str .= "$bf.${suff}_$obj ";
180 push(@Depend_lines, "$str: $sf\n");
181 # if it's a literate file, .lhs or .ly? (happy specs), then we de-literatize it:
182 if ( $sf !~ /\.l(hs|y)$/ ) {
185 $file_to_read = "$Tmp_prefix.hs";
186 local($to_do) = "$Unlit $sf $file_to_read";
187 &run_something($to_do, 'unlit');
189 &slurp_file_for_imports($file_to_read, $sf);
191 if ( $sf =~ /\.l(hs|y)$/ ) {
192 unlink "$Tmp_prefix.hs";
197 # OK, mangle the Makefile
198 unlink("$Makefile.bak");
201 # If no output file exist as yet, create one.
203 if ( ! -f $Makefile.bak ) {
204 system("touch $Makefile.bak");
206 if ( -f $Makefile ) {
207 rename($Makefile,"$Makefile.bak");
209 # now copy Makefile.bak into Makefile, rm'ing old dependencies
211 open(OMKF,"< $Makefile.bak") || die "$Pgm: can't open $Makefile.bak: $!\n";
212 open(NMKF,"> $Makefile") || die "$Pgm: can't open $Makefile: $!\n";
215 while ($_ && $_ ne $Begin_magic_str) { # copy through, 'til Begin_magic_str
219 while ($_ && $_ ne $End_magic_str) { # delete 'til End_magic_str
222 # insert dependencies
223 print $Begin_magic_str;
225 print $End_magic_str;
226 while (<OMKF>) { # copy the rest through
229 close(NMKF) || exit(1);
230 close(OMKF) || exit(1);
233 sub mangle_command_line_args {
234 while($_ = $ARGV[0]) {
240 } elsif ( /^-D(.*)/ ) { # recognized wherever they occur
242 } elsif ( /^-i(.*)/ ) {
243 $Import_dirs .= ":$1";
245 $Include_dirs .= " $_";
246 } elsif ( /^-syslib$/ ) {
247 push(@Syslibs, &grab_arg_arg($_,''));
248 } elsif ($Dashdashes_seen != 1) { # not between -- ... --
251 } elsif ( /^-f(.*)/ ) {
252 $Makefile = &grab_arg_arg('-f',$1);
253 } elsif ( /^-o(.*)/ ) {
254 local($suff) = &grab_arg_arg('-o',$1);
255 # Weed out existing entry .. there must be a better way of doing this
256 # with arrays (non-assoc) ! -- sof
257 @Obj_suffix = grep(!/$suff/,@Obj_suffix);
258 push(@Obj_suffix, $suff);
260 # --exclude-module=mod => it's stable, trust me!
262 } elsif ( /^-(x|-exclude-module=)(.*)/ ) {
263 local($thing) = &grab_arg_arg($1,$2);
264 $IgnoreMe{$thing} = 'y';
265 } elsif ( /^-(X|-exclude-directory=)(.*)/ ) {
266 foreach $d ( split(/:/,&grab_arg_arg($1, $2)) ) {
267 push(@Ignore_dirs,"$d");
269 } elsif ( /^--include-module=(.*)/ ) {
270 local($thing) = &grab_arg_arg($1,$2);
271 $IgnoreMe{$thing} = 'n';
272 } elsif ( /^-s(.*)/ ) {
273 local($suff) = &grab_arg_arg('-s',$1);
274 push(@File_suffix, $suff);
276 print STDERR "$Pgm: unknown option ignored: $_\n";
279 push(@Src_files, $_);
282 } elsif ($Dashdashes_seen == 1) { # where we ignore unknown options
283 push(@Src_files, $_) if ! /^-/;
286 @File_suffix = sort (@File_suffix);
290 local($option, $rest_of_arg) = @_;
293 return($rest_of_arg);
294 } elsif ($#ARGV >= 0) {
295 local($temp) = $ARGV[0]; shift(@ARGV);
298 print STDERR "$Pgm: no argument following $option option\n";
303 sub preprocess_import_dirs {
304 # it's probably cheaper to find out what's in all
305 # the @Import_dirs before we start processing.
310 foreach $d ( @Import_dirs ) {
311 # Check to see if it can be ignored
312 #print STDERR "Ignore imports from $d\n" if $Verbose && $Ignore_dirs{$d};
313 #next if $Ignore_dirs{$d};
315 opendir(DIR, $d) || die "$Pgm: can't open directory $d\n";
317 for ($_ = readdir(DIR); $_; $_ = readdir(DIR)) {
318 next unless /(.*)\.hi$/;
320 if ($ModuleIn{$thing} && $ModuleIn{$thing} ne $d) {
321 print STDERR "$Pgm: warning: $thing.hi appears in both $ModuleIn{$thing} and $d!\n";
323 $ModuleIn{$thing} = $d;
326 closedir(DIR); # No, don't check the error code
329 # Add all the modules
330 # to the IgnoreMe array before we start scanning for imports.
331 foreach $d (@Ignore_dirs) {
333 opendir(DIR, $d) || die "$Pgm: can't open directory $d\n";
335 for ($_ = readdir(DIR); $_; $_ = readdir(DIR)) {
336 next unless /(.*)\.(hi|l?hs|l?y)$/;
337 #don't tag it twice or overwrite it with a diff. value
338 next if $IgnoreMe{$1};
339 print STDERR "Module $d/$1.$2 will be ignored\n" if $Verbose;
343 closedir(DIR); # No, don't check the error code
347 sub slurp_file_for_imports {
348 local($file_to_read, $orig_src_file) = @_;
351 local($last_seen_dir) = $orig_src_file;
352 $last_seen_dir =~ s/\/[^\/]+$//; # strip to dir name
353 $last_seen_dir = '.' if ($last_seen_dir eq $orig_src_file);
355 # we mangle #include's so they will also leave something
356 # behind to indicate the dependency on _them_
358 print STDERR "${SED} -e '/^# *include/{p;s/^# *include/!include/;};s/'\\''//g;s/\"//g' $file_to_read | $Cpp $Include_dirs -I$last_seen_dir @Defines |\n" if $Verbose;
360 open(SRCFILE, "${SED} -e '/^# *include/{p;s/^# *include/!include/;};s/'\\''//g;s/\"//g' $file_to_read | $Cpp $Include_dirs -I$last_seen_dir @Defines |")
361 || die "$Pgm: Can't open $file_to_read: $!\n";
365 # import {-# SOURCE #-} Foo (bar) generates dependencies on the source file only,
366 # the compiler will deal with the absence of Foo.hi by consulting the
367 # source for Foo directly. (for dealing with recursive modules).
369 next unless (/^>?\s*(import)(\s+{-#\s*SOURCE\s*#-})?(\s+qualified)?\s+([A-Z][A-Za-z0-9_']*)/ || /^!(include)(\s+)"(\S+)"/);
371 $source = ( $2 ne '') ? 1 : 0;
374 next if $modname eq '';
375 if ($todo eq 'import') {
376 if ( $ModuleIn{$modname} ) {
377 $follow_file = "$ModuleIn{$modname}/$modname.hi";
380 = &find_in_Import_dirs($orig_src_file, $modname, $last_seen_dir, $source );
384 = &find_in_Include_dirs($orig_src_file, $modname, $last_seen_dir);
387 if (! $follow_file) { # it didnae find anything
388 die "$orig_src_file: Couldn't handle: $_\n";
390 } else { # it found something
391 if ($follow_file ne '__ignore__') {
393 $int_file = $follow_file;
395 if ( $int_file !~ /\.(l?hs|hi|l?y)$/ ) {
397 foreach $obj (@Obj_suffix) {
399 foreach $suff (@File_suffix) {
400 $str .= "$bf.${suff}_$obj ";
403 push(@Depend_lines, "$str: $int_file\n");
405 $int_file =~ s/\.l?hs$//;
406 $int_file =~ s/\.l?y$//;
407 $int_file =~ s/\.hi$//;
411 $source_dep = "$int_file.hi-boot";
414 foreach $obj (@Obj_suffix) {
417 push(@Depend_lines, "$str: $int_file.hi\n");
421 foreach $suff (@File_suffix) {
423 foreach $obj (@Obj_suffix) {
424 $str .= "$bf.${suff}_$obj ";
426 push(@Depend_lines, "$str: $int_file.${suff}_hi\n");
430 foreach $obj (@Obj_suffix) {
432 foreach $suff (@File_suffix) {
433 $str .= "$bf.${suff}_$obj ";
436 push(@Depend_lines, "$str: $source_dep\n");
442 close(SRCFILE) || exit(1);
445 # when we see something, we cache that fact ('y').
446 # also, when we get a miss, we cache that (so we don't try later); ('n')
449 sub find_in_Import_dirs {
450 local($orig_src_file, $modname, $last_seen_dir, $source) = @_;
452 local($do_magical_check) = 0;
453 local($name_to_check);
455 # do it the old hard way: hop along Import_dir list
456 foreach $import_dir (@Import_dirs) {
458 if ($import_dir eq '.') {
459 # record that we should do a SPECIAL try for a file in last_seen_dir (LAST)
460 $do_magical_check = 1;
463 $name_to_check = "$import_dir/$modname.hi";
464 if ( $FileExists{$name_to_check} ne 'n' ) { # either 'y' or nothing
465 print STDERR "trying $name_to_check...\n" if $Verbose >= 2; # very verbose
466 return($name_to_check) if $FileExists{$name_to_check} eq 'y';
467 if (-f $name_to_check) {
468 $FileExists{$name_to_check} = 'y';
469 return($name_to_check) ;
471 $FileExists{$name_to_check} = 'n';
475 for $suff ('hs', 'lhs', 'ly', 'y') {
476 $name_to_check = "$import_dir/$modname.$suff";
477 print STDERR "trying... $name_to_check\n" if $Verbose >= 2; # very verbose
478 return($name_to_check) if -f $name_to_check;
482 $name_to_check = "$import_dir/$modname.hi-boot";
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;