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.
36 -f blah Use "blah" as the makefile, rather than "makefile"
38 -o <osuf> Use <osuf> as the "object file" suffix ( default: o)
39 -s <suf> Make extra dependencies for files with
40 suffix <suf><osuf>; thus, "-o hc -s _a" will
41 make dependencies both for .hc files and for .a_hc
42 files. (Useful in conjunction with NoFib "ways".)
43 --exclude-module=<file>
44 Regard <file> as "stable"; i.e., eXclude it from having
46 -x same as --exclude-module
47 --exclude-directory=<dirs>
48 Regard : separated list of directories as containing stable,
49 don't generate any dependencies on modules therein.
50 -Xdirs same as --exclude-directory
52 Regard prelude library as unstable, i.e., generate dependencies
53 on prelude modules. This option is normally only used by the
54 various system libraries. If a -syslib option is used, dependencies
55 will also be generated on the library's interfaces.
56 --include-module=<file>
57 Regard <file> as not "stable"; i.e., generate dependencies
58 on it (if any). This option is normally used in conjunction
59 with the --exclude-directory option.
63 $Status = 0; # just used for exit() status
64 $Verbose = 0; # 1 => verbose, 2 => very verbose
65 $Warnings = 1; # 1 => warn about duplicate interface files
68 # Try to guess how to run gcc's CPP directly -------------
71 if ( $OrigCpp !~ /(\S+)\s+(.*)/ ) {
76 if ( -x $cmd ) { # cool
78 } else { # oops; try to guess
79 $GccV = `gcc -v 2>&1`;
80 if ( $GccV =~ /Reading specs from (.*)\/specs/ ) {
81 $Cpp = "$1/cpp $rest";
83 die "mkdependHS: don't know how to run cpp: $OrigCpp\n";
88 if ( $ENV{'TMPDIR'} ) { # where to make tmp file names
89 $Tmp_prefix = $ENV{'TMPDIR'} . "/mkdependHS$$";
91 $Tmp_prefix ="${TMPDIR}/mkdependHS$$";
92 $ENV{'TMPDIR'} = "${TMPDIR}"; # set the env var as well
95 $TopPwd = "${TOP_PWD}";
96 $InstLibDirGhc = "${libdir}";
97 $InstLibExecDirGhc = "${libexecdir}";
98 $InstHsLibDirGhc = "${libdir}/hslibs";
99 $InstDataDirGhc = "${datadir}";
101 $Unlit = ($INSTALLING) ? "${InstLibExecDirGhc}/unlit"
102 : "${TopPwd}/ghc/utils/unlit/unlit";
104 $Begin_magic_str = "# DO NOT DELETE: Beginning of Haskell dependencies\n";
105 $End_magic_str = "# DO NOT DELETE: End of Haskell dependencies\n";
108 $ghc_version_info = int ( ${PROJECTVERSION} * 100 );
112 %LibIfaces = (); # known prelude/syslib ifaces; read from a file
114 # directories to considered stable.
117 $Include_dirs = '-I.';
120 $Include_prelude = 0;
122 &mangle_command_line_args();
130 ( #OLD: "-D__HASKELL1__=$Haskell_1",
131 "-D__GLASGOW_HASKELL__=$ghc_version_info"));
133 @Import_dirs = split(/:/,$Import_dirs);
134 @Include_dirs = split(/\s+/,$Include_dirs); # still has -I's in it
136 # set up array of ignored modules
137 local(@dirs) = ($INSTALLING) ?
138 ("$InstLibDirGhc/imports")
139 : ("$TopPwd/ghc/lib/ghc",
140 "$TopPwd/ghc/lib/required",
141 "$TopPwd/ghc/lib/glaExts",
142 "$TopPwd/ghc/lib/concurrent");
143 if (!$Include_prelude) {
144 push(@Ignore_dirs, @dirs);
146 push(@Import_dirs, @dirs);
149 foreach $lib ( @Syslibs ) {
151 ($INSTALLING) ? "${InstHsLibDirGhc}/${lib}/imports"
152 : "${TopPwd}/hslibs/${lib}/src";
153 if (!$Include_prelude) {
154 push(@Ignore_dirs,$dir);
156 push(@Import_dirs, @dirs);
161 # NB: We keep the scalar-variable equivalents to use in error messages
163 if ( ! $Makefile && -f 'makefile' ) {
164 $Makefile = 'makefile';
165 } elsif ( ! $Makefile && -f 'Makefile') {
166 $Makefile = 'Makefile';
167 } elsif ( ! $Makefile) {
168 die "$Pgm: no makefile or Makefile found\n";
171 print STDERR "CPP defines=@Defines\n" if $Verbose;
172 print STDERR "Import_dirs=@Import_dirs\n" if $Verbose;
173 print STDERR "Include_dirs=@Include_dirs\n" if $Verbose;
175 &preprocess_import_dirs();
179 # Delete temp. file if script is halted.
180 sub quit_upon_signal { print STDERR "Deleting $Tmp_prefix.hs .. \n"; unlink "$Tmp_prefix.hs"; }
181 $SIG{'INT'} = 'quit_upon_signal';
182 $SIG{'QUIT'} = 'quit_upon_signal';
184 foreach $sf (@Src_files) {
186 # just like lit-inputter
187 # except it puts each file through CPP and
188 # a de-commenter (not implemented);
189 # builds up @Depend_lines
190 print STDERR "Here we go for source file: $sf\n" if $Verbose;
191 ($bf = $sf) =~ s/\.l?(hs|y)$//;
194 foreach $obj (@Obj_suffix) {
196 foreach $suff (@File_suffix) {
197 $str .= "$bf.${suff}_$obj ";
200 push(@Depend_lines, "$str: $sf\n");
201 # if it's a literate file, .lhs or .ly? (happy specs), then we de-literatize it:
202 if ( $sf !~ /\.l(hs|y)$/ ) {
205 $file_to_read = "$Tmp_prefix.hs";
206 local($to_do) = "$Unlit $sf $file_to_read";
207 &run_something($to_do, 'unlit');
209 &slurp_file_for_imports($file_to_read, $sf);
211 if ( $sf =~ /\.l(hs|y)$/ ) {
212 unlink "$Tmp_prefix.hs";
217 # OK, mangle the Makefile
218 unlink("$Makefile.bak");
221 # If no output file exist as yet, create one.
223 if ( ! -f $Makefile.bak ) {
224 system("touch $Makefile.bak");
226 if ( -f $Makefile ) {
227 rename($Makefile,"$Makefile.bak");
229 # now copy Makefile.bak into Makefile, rm'ing old dependencies
231 open(OMKF,"< $Makefile.bak") || die "$Pgm: can't open $Makefile.bak: $!\n";
232 open(NMKF,"> $Makefile") || die "$Pgm: can't open $Makefile: $!\n";
235 while ($_ && $_ ne $Begin_magic_str) { # copy through, 'til Begin_magic_str
239 while ($_ && $_ ne $End_magic_str) { # delete 'til End_magic_str
242 # insert dependencies
243 print $Begin_magic_str, @Depend_lines, $End_magic_str || die "Failed to write out dependencies ($!)";
245 while (<OMKF>) { # copy the rest through
246 print $_ || die "Failed to write out dependencies ($!)";
248 close(NMKF) || exit(1);
249 close(OMKF) || exit(1);
252 sub mangle_command_line_args {
253 while($_ = $ARGV[0]) {
259 } elsif ( /^-D(.*)/ ) { # recognized wherever they occur
261 } elsif ( /^-i(.*)/ ) { # ditto
262 $Import_dirs .= ":$1";
264 $Include_dirs .= " $_";
265 } elsif ( /^-syslib$/ ) {
266 push(@Syslibs, &grab_arg_arg($_,''));
267 } elsif ($Dashdashes_seen != 1) { # not between -- ... --
272 } elsif ( /^-f(.*)/ ) {
273 $Makefile = &grab_arg_arg('-f',$1);
274 } elsif ( /^-o(.*)/ ) {
275 local($suff) = &grab_arg_arg('-o',$1);
276 # Weed out existing entry .. there must be a better way of doing this
277 # with arrays (non-assoc) ! -- sof
278 @Obj_suffix = grep(!/$suff/,@Obj_suffix);
279 push(@Obj_suffix, $suff);
281 # --exclude-module=mod => it's stable, trust me!
283 } elsif ( /^-(x|-exclude-module=)(.*)/ ) {
284 local($thing) = &grab_arg_arg($1,$2);
285 $IgnoreMe{$thing} = 'y';
286 } elsif ( /^-(X|-exclude-directory=)(.*)/ ) {
287 foreach $d ( split(/:/,&grab_arg_arg($1, $2)) ) {
288 push(@Ignore_dirs,"$d");
290 } elsif ( /^--include-module=(.*)/ ) {
291 local($thing) = &grab_arg_arg($1,$2);
292 $IgnoreMe{$thing} = 'n';
293 } elsif ( /^--include-prelude$/ ) {
294 $Include_prelude = 1;
295 } elsif ( /^-s(.*)/ ) {
296 local($suff) = &grab_arg_arg('-s',$1);
297 push(@File_suffix, $suff);
299 print STDERR "$Pgm: unknown option ignored: $_\n";
302 push(@Src_files, $_);
305 } elsif ($Dashdashes_seen == 1) { # where we ignore unknown options
306 push(@Src_files, $_) if ! /^-/;
309 @File_suffix = sort (@File_suffix);
313 local($option, $rest_of_arg) = @_;
316 return($rest_of_arg);
317 } elsif ($#ARGV >= 0) {
318 local($temp) = $ARGV[0]; shift(@ARGV);
321 print STDERR "$Pgm: no argument following $option option\n";
326 sub preprocess_import_dirs {
327 # it's probably cheaper to find out what's in all
328 # the @Import_dirs before we start processing.
333 foreach $d ( @Import_dirs ) {
334 # Check to see if it can be ignored
335 #print STDERR "Ignore imports from $d\n" if $Verbose && $Ignore_dirs{$d};
336 #next if $Ignore_dirs{$d};
338 opendir(DIR, $d) || die "$Pgm: can't open directory $d\n";
340 for ($_ = readdir(DIR); $_; $_ = readdir(DIR)) {
341 next unless /(.*)\.hi$/;
343 if ($ModuleIn{$thing} && $ModuleIn{$thing} ne $d) {
344 print STDERR "$Pgm: warning: $thing.hi appears in both $ModuleIn{$thing} and $d!\n" if ($Warnings);
346 $ModuleIn{$thing} = $d;
349 closedir(DIR); # No, don't check the error code
352 # Add all the modules
353 # to the IgnoreMe array before we start scanning for imports.
354 foreach $d (@Ignore_dirs) {
356 opendir(DIR, $d) || die "$Pgm: can't open directory $d\n";
358 for ($_ = readdir(DIR); $_; $_ = readdir(DIR)) {
359 next unless /(.*)\.(hi|l?hs|l?y)$/;
360 #don't tag it twice or overwrite it with a diff. value
361 next if $IgnoreMe{$1};
362 print STDERR "Module $d/$1.$2 will be ignored\n" if $Verbose;
366 closedir(DIR); # No, don't check the error code
370 sub slurp_file_for_imports {
371 local($file_to_read, $orig_src_file) = @_;
374 local($last_seen_dir) = $orig_src_file;
375 $last_seen_dir =~ s/\/[^\/]+$//; # strip to dir name
376 $last_seen_dir = '.' if ($last_seen_dir eq $orig_src_file);
378 process_dependency('import',0,'Prelude') if ($Include_prelude);
380 # we mangle #include's so they will also leave something
381 # behind to indicate the dependency on _them_
383 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 $Verbose;
385 open(SRCFILE, "${SED} -e '/^# *include/{p;s/^# *include/!include/;};s/'\\''//g;s/\"//g' $file_to_read | $Cpp $Include_dirs -I$last_seen_dir @Defines |")
386 || die "$Pgm: Can't open $file_to_read: $!\n";
390 # import {-# SOURCE #-} Foo (bar) generates dependencies on the source file only,
391 # the compiler will deal with the absence of Foo.hi by consulting the
392 # source for Foo directly. (for dealing with recursive modules).
394 next unless (/^>?\s*(import)(\s+{-#\s*SOURCE\s*#-})?(\s+qualified)?\s+([A-Z][A-Za-z0-9_']*)/ || /^!(include)(\s+)"(\S+)"/);
396 $source = ( $2 ne '') ? 1 : 0;
399 next if $modname eq '';
400 process_dependency($todo,$source,$modname);
402 close(SRCFILE) || exit(1);
407 sub process_dependency {
408 local($todo,$source,$modname) = @_;
410 if ($todo eq 'import') {
411 if ( $ModuleIn{$modname} ) {
412 $follow_file = "$ModuleIn{$modname}/$modname.hi";
415 &find_in_Import_dirs($orig_src_file, $modname, $last_seen_dir, $source );
419 = &find_in_Include_dirs($orig_src_file, $modname, $last_seen_dir);
422 if (! $follow_file) { # it didnae find anything
423 die "$orig_src_file: Couldn't handle: $_\n";
425 } else { # it found something
426 if ($follow_file ne '__ignore__') {
427 local($int_file) = $follow_file;
429 if ( $int_file !~ /\.(l?hs|hi|l?y)$/ ) {
431 foreach $obj (@Obj_suffix) {
433 foreach $suff (@File_suffix) {
434 $str .= "$bf.${suff}_$obj ";
437 push(@Depend_lines, "$str: $int_file\n");
439 $int_file =~ s/\.l?hs$//;
440 $int_file =~ s/\.l?y$//;
441 $int_file =~ s/\.hi$//;
445 $source_dep = "$int_file.hi-boot";
448 foreach $obj (@Obj_suffix) {
451 push(@Depend_lines, "$str: $int_file.hi\n");
455 foreach $suff (@File_suffix) {
457 foreach $obj (@Obj_suffix) {
458 $str .= "$bf.${suff}_$obj ";
460 push(@Depend_lines, "$str: $int_file.${suff}_hi\n");
464 foreach $obj (@Obj_suffix) {
466 foreach $suff (@File_suffix) {
467 $str .= "$bf.${suff}_$obj ";
470 push(@Depend_lines, "$str: $source_dep\n");
477 # when we see something, we cache that fact ('y').
478 # also, when we get a miss, we cache that (so we don't try later); ('n')
481 sub find_in_Import_dirs {
482 local($orig_src_file, $modname, $last_seen_dir, $source) = @_;
484 local($do_magical_check) = 0;
485 local($name_to_check);
487 # do it the old hard way: hop along Import_dir list
488 foreach $import_dir (@Import_dirs) {
490 if ($import_dir eq '.') {
491 # record that we should do a SPECIAL try for a file in last_seen_dir (LAST)
492 $do_magical_check = 1;
495 $name_to_check = "$import_dir/$modname.hi";
496 if ( $FileExists{$name_to_check} ne 'n' ) { # either 'y' or nothing
497 print STDERR "trying $name_to_check...\n" if $Verbose >= 2; # very verbose
498 return($name_to_check) if $FileExists{$name_to_check} eq 'y';
499 if (-f $name_to_check) {
500 $FileExists{$name_to_check} = 'y';
501 return($name_to_check) ;
503 $FileExists{$name_to_check} = 'n';
507 for $suff ('hs', 'lhs', 'ly', 'y') {
508 $name_to_check = "$import_dir/$modname.$suff";
509 print STDERR "trying... $name_to_check\n" if $Verbose >= 2; # very verbose
510 return($name_to_check) if -f $name_to_check;
514 $name_to_check = "$import_dir/$modname.hi-boot";
515 print STDERR "trying... $name_to_check\n" if $Verbose >= 2; # very verbose
516 return($name_to_check) if -f $name_to_check;
519 if ($do_magical_check == 1) {
520 $name_to_check = "$last_seen_dir/$modname.hi";
522 if ( $FileExists{$name_to_check} ne 'n' ) { # either 'y' or nothing
523 print STDERR "trying $name_to_check...\n" if $Verbose >= 2; # very verbose
524 return($name_to_check) if $FileExists{$name_to_check} eq 'y';
525 if (-f $name_to_check) {
526 $FileExists{$name_to_check} = 'y';
527 return($name_to_check) ;
529 $FileExists{$name_to_check} = 'n';
533 for $suff ('lhs', 'hs', 'ly', 'y') {
534 $name_to_check = "$last_seen_dir/$modname.$suff";
535 print STDERR "trying... $name_to_check\n" if $Verbose >= 2; # very verbose
536 return($name_to_check) if -f $name_to_check;
540 # OK, maybe it's referring to something in a system library
541 #foreach $lib ( @Syslibs ) {
542 # return('__ignore__') if $LibIfaces{"$lib:$modname"};
545 # Last hope: referring to a Prelude interface
546 return('__ignore__') if ( $IgnoreMe{$modname} eq 'y' );
548 die "No file `$modname.hi', `$modname.lhs', `$modname.hs' (reqd from file `$orig_src_file')\namong import directories:\n\t$Import_dirs\n";
551 sub find_in_Include_dirs {
552 local($orig_src_file, $name, $last_seen_dir) = @_;
554 local($do_magical_check) = 0;
556 # no funny name guessing here
558 # hop along Include_dir list
559 foreach $include_dir (@Include_dirs) {
560 $include_dir =~ s/^-I//;
563 if ($include_dir eq '.') {
564 # record that we should do a SPECIAL try for a file in last_seen_dir (LAST)
565 $do_magical_check = 1;
567 print STDERR "trying $include_dir/$name...\n" if $Verbose >= 2; # very verbose
568 if (-f "$include_dir/$name") {
569 return("$include_dir/$name");
572 if ($do_magical_check == 1) {
573 print STDERR "trying $last_seen_dir/$name...\n" if $Verbose >= 2; # very verbose
574 if (-f "$last_seen_dir/$name") {
575 return("$last_seen_dir/$name");
578 die "No file `$name' (reqd from file `$orig_src_file') among include directories: $Include_dirs\n";
581 # out of the driver, actually
583 local($str_to_do, $tidy_name) = @_;
585 print STDERR "\n$tidy_name:\n\t" if $Verbose;
586 print STDERR "$str_to_do\n" if $Verbose;
588 local($return_val) = system($str_to_do) >> 8;
590 if ($return_val != 0) {
591 local($die_msg) = "$Pgm: execution of the $tidy_name had trouble";
592 $die_msg .= " (program not found)" if $return_val == 255;
593 $die_msg .= " ($!)" if $Verbose && $! != 0;
595 print STDERR $die_msg;