2 # perl script expect the following variables to be prepended:
4 # RAWCPP TMPDIR TOP_PWD
5 # libdir 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).
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 $TopPwd = "${TOP_PWD}";
91 $InstLibDirGhc = "${libdir}";
92 $InstHsLibDirGhc = "${libdir}/hslibs";
93 $InstDataDirGhc = "${datadir}";
95 $Unlit = ($INSTALLING) ? "${InstLibDirGhc}/unlit" : "${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";
100 $ghc_version_info = int ( ${PROJECTVERSION} * 100 );
104 %LibIfaces = (); # known prelude/syslib ifaces; read from a file
107 # directories to considered stable.
108 @Ignore_dirs = ($INSTALLING) ?
109 ("$InstLibDirGhc/imports")
110 : ("$TopPwd/ghc/lib/ghc",
111 "$TopPwd/ghc/lib/required",
112 "$TopPwd/ghc/lib/glaExts",
113 "$TopPwd/ghc/lib/concurrent");
115 $Haskell_1 = 3; # assume Haskell 1.3. Changed by -fhaskell-1.?
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,$dir);
136 ("-D__HASKELL1__=$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 foreach $sf (@Src_files) {
160 # just like lit-inputter
161 # except it puts each file through CPP and
162 # a de-commenter (not implemented);
163 # builds up @Depend_lines
164 print STDERR "Here we go for source file: $sf\n" if $Verbose;
165 ($bf = $sf) =~ s/\.l?(hs|y)$//;
166 #push(@Depend_lines, "$bf.$Obj_suffix $bf.hi : $sf\n");
167 push(@Depend_lines, "$bf.$Obj_suffix : $sf\n");
168 foreach $suff (@File_suffix) {
169 push(@Depend_lines, "$bf.${suff}_$Obj_suffix : $sf\n");
172 # if it's a literate file, .lhs or .ly? (happy specs), then we de-literatize it:
173 if ( $sf !~ /\.l(hs|y)$/ ) {
176 $file_to_read = "$Tmp_prefix.hs";
177 local($to_do) = "$Unlit $sf $file_to_read";
178 &run_something($to_do, 'unlit');
180 &slurp_file_for_imports($file_to_read, $sf);
182 if ( $sf =~ /\.l(hs|y)$/ ) {
183 unlink "$Tmp_prefix.hs";
187 # OK, mangle the Makefile
188 unlink("$Makefile.bak");
191 # If no output file exist as yet, create one.
193 if ( ! -f $Makefile.bak ) {
194 system("touch $Makefile.bak");
196 if ( -f $Makefile ) {
197 rename($Makefile,"$Makefile.bak");
199 # now copy Makefile.bak into Makefile, rm'ing old dependencies
201 open(OMKF,"< $Makefile.bak") || die "$Pgm: can't open $Makefile.bak: $!\n";
202 open(NMKF,"> $Makefile") || die "$Pgm: can't open $Makefile: $!\n";
205 while ($_ && $_ ne $Begin_magic_str) { # copy through, 'til Begin_magic_str
209 while ($_ && $_ ne $End_magic_str) { # delete 'til End_magic_str
212 # insert dependencies
213 print $Begin_magic_str;
215 print $End_magic_str;
216 while (<OMKF>) { # copy the rest through
219 close(NMKF) || exit(1);
220 close(OMKF) || exit(1);
223 sub mangle_command_line_args {
224 while($_ = $ARGV[0]) {
230 } elsif ( /^-D(.*)/ ) { # recognized wherever they occur
232 } elsif ( /^-i(.*)/ ) {
233 $Import_dirs .= ":$1";
235 $Include_dirs .= " $_";
236 } elsif ( /^-syslib$/ ) {
237 push(@Syslibs, &grab_arg_arg($_,''));
238 } elsif ( /^-fhaskell-1\.([2-9])/ ) {
240 } elsif ($Dashdashes_seen != 1) { # not between -- ... --
243 } elsif ( /^-f(.*)/ ) {
244 $Makefile = &grab_arg_arg('-f',$1);
245 } elsif ( /^-o(.*)/ ) {
246 $Obj_suffix = &grab_arg_arg('-o',$1);
248 # --exclude-module=mod => it's stable, trust me!
250 } elsif ( /^-(x|-exclude-module=)(.*)/ ) {
251 local($thing) = &grab_arg_arg($1,$2);
252 $IgnoreMe{$thing} = 'y';
253 } elsif ( /^-(X|-exclude-directory=)(.*)/ ) {
254 foreach $d ( split(/:/,&grab_arg_arg($1, $2)) ) {
255 push(@Ignore_dirs,"$d");
257 } elsif ( /^--include-module=(.*)/ ) {
258 local($thing) = &grab_arg_arg($1,$2);
259 $IgnoreMe{$thing} = 'n';
260 } elsif ( /^-s(.*)/ ) {
261 local($suff) = &grab_arg_arg('-s',$1);
262 push(@File_suffix, $suff);
264 print STDERR "$Pgm: unknown option ignored: $_\n";
267 push(@Src_files, $_);
270 } elsif ($Dashdashes_seen == 1) { # where we ignore unknown options
271 push(@Src_files, $_) if ! /^-/;
274 @File_suffix = sort (@File_suffix);
278 local($option, $rest_of_arg) = @_;
281 return($rest_of_arg);
282 } elsif ($#ARGV >= 0) {
283 local($temp) = $ARGV[0]; shift(@ARGV);
286 print STDERR "$Pgm: no argument following $option option\n";
291 sub preprocess_import_dirs {
292 # it's probably cheaper to find out what's in all
293 # the @Import_dirs before we start processing.
298 foreach $d ( @Import_dirs ) {
299 # Check to see if it can be ignored
300 #print STDERR "Ignore imports from $d\n" if $Verbose && $Ignore_dirs{$d};
301 #next if $Ignore_dirs{$d};
303 opendir(DIR, $d) || die "$Pgm: can't open directory $d\n";
305 for ($_ = readdir(DIR); $_; $_ = readdir(DIR)) {
306 next unless /(.*)\.hi$/;
308 if ($ModuleIn{$thing} && $ModuleIn{$thing} ne $d) {
309 print STDERR "$Pgm: warning: $thing.hi appears in both $ModuleIn{$thing} and $d!\n";
311 $ModuleIn{$thing} = $d;
314 closedir(DIR); # No, don't check the error code
317 # Add all the modules
318 # to the IgnoreMe array before we start scanning for imports.
319 foreach $d (@Ignore_dirs) {
321 opendir(DIR, $d) || die "$Pgm: can't open directory $d\n";
323 for ($_ = readdir(DIR); $_; $_ = readdir(DIR)) {
324 next unless /(.*)\.(hi|l?hs|l?y)$/;
325 #don't tag it twice or overwrite it with a diff. value
326 next if $IgnoreMe{$1};
327 print STDERR "Module $d/$1.$2 will be ignored\n" if $Verbose;
331 closedir(DIR); # No, don't check the error code
335 sub slurp_file_for_imports {
336 local($file_to_read, $orig_src_file) = @_;
339 local($last_seen_dir) = $orig_src_file;
340 $last_seen_dir =~ s/\/[^\/]+$//; # strip to dir name
341 $last_seen_dir = '.' if ($last_seen_dir eq $orig_src_file);
343 # we mangle #include's so they will also leave something
344 # behind to indicate the dependency on _them_
346 print STDERR "${SED} -e '/^# *include/{p;s/^# *include/!include/;};s/'\\''//g;s/\"//g' $file_to_read | $Cpp $Include_dirs -I$last_seen_dir @Defines |\n" if $Verbose;
348 open(SRCFILE, "${SED} -e '/^# *include/{p;s/^# *include/!include/;};s/'\\''//g;s/\"//g' $file_to_read | $Cpp $Include_dirs -I$last_seen_dir @Defines |")
349 || die "$Pgm: Can't open $file_to_read: $!\n";
353 # import {-# SOURCE #-} Foo (bar) generates dependencies on the source file only,
354 # the compiler will deal with the absence of Foo.hi by consulting the
355 # source for Foo directly. (for dealing with recursive modules).
357 next unless (/^>?\s*(import)(\s+{-#\s*SOURCE\s*#-})?(\s+qualified)?\s+([A-Z][A-Za-z0-9_']*)/ || /^!(include)(\s+)"(\S+)"/);
359 $source = ( $2 ne '') ? 1 : 0;
362 next if $modname eq '';
363 if ($todo eq 'import') {
364 if ( $ModuleIn{$modname} ) {
365 $follow_file = "$ModuleIn{$modname}/$modname.hi";
368 = &find_in_Import_dirs($orig_src_file, $modname, $last_seen_dir );
372 = &find_in_Include_dirs($orig_src_file, $modname, $last_seen_dir);
375 if (! $follow_file) { # it didnae find anything
376 die "$orig_src_file: Couldn't handle: $_\n";
378 } else { # it found something
379 if ($follow_file ne '__ignore__') {
381 $int_file = $follow_file;
383 if ( $int_file !~ /\.(l?hs|hi|l?y)$/ ) {
384 push(@Depend_lines, "$bf.$Obj_suffix : $int_file\n");
385 foreach $suff (@File_suffix) {
386 push(@Depend_lines, "$bf.${suff}_$Obj_suffix : $int_file\n");
390 $int_file =~ s/\.l?hs$//;
391 $int_file =~ s/\.l?y$//;
392 $int_file =~ s/\.hi$//;
395 if ( $source && -f "$int_file.hs" ) {
396 $source_dep = "$int_file.hs";
397 push(@Depend_lines, "$bf.$Obj_suffix : $source_dep\n");
398 } elsif ( $source && -f "$int_file.lhs" ) {
399 $source_dep = "$int_file.lhs";
400 push(@Depend_lines, "$bf.$Obj_suffix : $source_dep\n");
401 } elsif ( $source && ( -f "$int_file.ly" || -f "$int_file.y" ) ) {
402 $source_dep = "$int_file.hs";
403 push(@Depend_lines, "$bf.$Obj_suffix : $source_dep\n");
406 print STDERR "Warning: could not find source file dependency $int_file.(hs|lhs|y|ly)\n";
408 push(@Depend_lines, "$bf.$Obj_suffix : $int_file.hi\n");
412 foreach $suff (@File_suffix) {
413 push(@Depend_lines, "$bf.${suff}_$Obj_suffix : $int_file.${suff}_hi\n");
416 foreach $suff (@File_suffix) {
417 push(@Depend_lines, "$bf.${suff}_$Obj_suffix : $source_dep\n");
424 close(SRCFILE) || exit(1);
427 # when we see something, we cache that fact ('y').
428 # also, when we get a miss, we cache that (so we don't try later); ('n')
431 sub find_in_Import_dirs {
432 local($orig_src_file, $modname, $last_seen_dir, $source) = @_;
434 local($do_magical_check) = 0;
435 local($name_to_check);
437 # do it the old hard way: hop along Import_dir list
438 foreach $import_dir (@Import_dirs) {
440 if ($import_dir eq '.') {
441 # record that we should do a SPECIAL try for a file in last_seen_dir (LAST)
442 $do_magical_check = 1;
445 $name_to_check = "$import_dir/$modname.hi";
446 if ( $FileExists{$name_to_check} ne 'n' ) { # either 'y' or nothing
447 print STDERR "trying $name_to_check...\n" if $Verbose >= 2; # very verbose
448 return($name_to_check) if $FileExists{$name_to_check} eq 'y';
449 if (-f $name_to_check) {
450 $FileExists{$name_to_check} = 'y';
451 return($name_to_check) ;
453 $FileExists{$name_to_check} = 'n';
457 for $suff ('hs', 'lhs', 'ly', 'y') {
458 $name_to_check = "$import_dir/$modname.$suff";
459 print STDERR "trying... $name_to_check\n" if $Verbose >= 2; # very verbose
460 return($name_to_check) if -f $name_to_check;
463 if ($do_magical_check == 1) {
464 $name_to_check = "$last_seen_dir/$modname.hi";
466 if ( $FileExists{$name_to_check} ne 'n' ) { # either 'y' or nothing
467 print STDERR "trying $name_to_check...\n" if $Verbose >= 2; # very verbose
468 return($name_to_check) if $FileExists{$name_to_check} eq 'y';
469 if (-f $name_to_check) {
470 $FileExists{$name_to_check} = 'y';
471 return($name_to_check) ;
473 $FileExists{$name_to_check} = 'n';
477 for $suff ('lhs', 'hs', 'ly', 'y') {
478 $name_to_check = "$last_seen_dir/$modname.$suff";
479 print STDERR "trying... $name_to_check\n" if $Verbose >= 2; # very verbose
480 return($name_to_check) if -f $name_to_check;
484 # OK, maybe it's referring to something in a system library
485 #foreach $lib ( @Syslibs ) {
486 # return('__ignore__') if $LibIfaces{"$lib:$modname"};
489 # Last hope: referring to a Prelude interface
490 return('__ignore__') if ( $IgnoreMe{$modname} eq 'y' );
492 die "No file `$modname.hi', `$modname.lhs', `$modname.hs' (reqd from file `$orig_src_file')\namong import directories:\n\t$Import_dirs\n";
495 sub find_in_Include_dirs {
496 local($orig_src_file, $name, $last_seen_dir) = @_;
498 local($do_magical_check) = 0;
500 # no funny name guessing here
502 # hop along Include_dir list
503 foreach $include_dir (@Include_dirs) {
504 $include_dir =~ s/^-I//;
507 if ($include_dir eq '.') {
508 # record that we should do a SPECIAL try for a file in last_seen_dir (LAST)
509 $do_magical_check = 1;
511 print STDERR "trying $include_dir/$name...\n" if $Verbose >= 2; # very verbose
512 if (-f "$include_dir/$name") {
513 return("$include_dir/$name");
516 if ($do_magical_check == 1) {
517 print STDERR "trying $last_seen_dir/$name...\n" if $Verbose >= 2; # very verbose
518 if (-f "$last_seen_dir/$name") {
519 return("$last_seen_dir/$name");
522 die "No file `$name' (reqd from file `$orig_src_file') among include directories: $Include_dirs\n";
525 # out of the driver, actually
527 local($str_to_do, $tidy_name) = @_;
529 print STDERR "\n$tidy_name:\n\t" if $Verbose;
530 print STDERR "$str_to_do\n" if $Verbose;
532 local($return_val) = system($str_to_do) >> 8;
534 if ($return_val != 0) {
535 local($die_msg) = "$Pgm: execution of the $tidy_name had trouble";
536 $die_msg .= " (program not found)" if $return_val == 255;
537 $die_msg .= " ($!)" if $Verbose && $! != 0;
539 print STDERR $die_msg;