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 libraries 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
70 if ( $ENV{'TMPDIR'} ) { # where to make tmp file names
71 $Tmp_prefix = $ENV{'TMPDIR'} . "/mkdependHS$$";
73 $Tmp_prefix ="${TMPDIR}/mkdependHS$$";
74 $ENV{'TMPDIR'} = "${TMPDIR}"; # set the env var as well
77 $TopPwd = "${TOP_PWD}";
78 $InstLibDirGhc = "${libdir}";
79 $InstLibExecDirGhc = "${libexecdir}";
80 $InstHsLibDirGhc = "${libdir}/hslibs";
81 $InstDataDirGhc = "${datadir}";
83 $Unlit = ($INSTALLING) ? "${InstLibExecDirGhc}/unlit"
84 : "${TopPwd}/ghc/utils/unlit/unlit";
86 $Begin_magic_str = "# DO NOT DELETE: Beginning of Haskell dependencies\n";
87 $End_magic_str = "# DO NOT DELETE: End of Haskell dependencies\n";
90 $ghc_version_info = int ( ${PROJECTVERSION} * 100 );
94 %LibIfaces = (); # known prelude/syslib ifaces; read from a file
96 # directories to considered stable.
99 $Include_dirs = '-I.';
102 $Include_prelude = 0;
104 &mangle_command_line_args();
112 ( #OLD: "-D__HASKELL1__=$Haskell_1",
113 "-D__GLASGOW_HASKELL__=$ghc_version_info"));
115 @Import_dirs = split(/:/,$Import_dirs);
116 @Include_dirs = split(/\s+/,$Include_dirs); # still has -I's in it
118 # set up array of ignored modules
119 local(@dirs) = ($INSTALLING) ?
120 ("$InstLibDirGhc/imports/std")
121 : ("$TopPwd/ghc/lib/std");
122 if (!$Include_prelude) {
123 push(@Ignore_dirs, @dirs);
125 push(@Import_dirs, @dirs);
128 foreach $lib ( @Syslibs ) {
130 ($INSTALLING) ? "${InstLibDirGhc}/imports/${lib}"
131 : "${TopPwd}/ghc/lib/${lib}";
132 if (!$Include_prelude) {
133 push(@Ignore_dirs,$dir);
135 push(@Import_dirs, @dirs);
140 # NB: We keep the scalar-variable equivalents to use in error messages
142 if ( ! $Makefile && -f 'makefile' ) {
143 $Makefile = 'makefile';
144 } elsif ( ! $Makefile && -f 'Makefile') {
145 $Makefile = 'Makefile';
146 } elsif ( ! $Makefile) {
147 die "$Pgm: no makefile or Makefile found\n";
150 print STDERR "CPP defines=@Defines\n" if $Verbose;
151 print STDERR "Import_dirs=@Import_dirs\n" if $Verbose;
152 print STDERR "Include_dirs=@Include_dirs\n" if $Verbose;
154 &preprocess_import_dirs();
158 # Delete temp. file if script is halted.
159 sub quit_upon_signal { print STDERR "Deleting $Tmp_prefix.hs .. \n"; unlink "$Tmp_prefix.hs"; }
160 $SIG{'INT'} = 'quit_upon_signal';
161 $SIG{'QUIT'} = 'quit_upon_signal';
163 foreach $sf (@Src_files) {
165 # just like lit-inputter
166 # except it puts each file through CPP and
167 # a de-commenter (not implemented);
168 # builds up @Depend_lines
169 print STDERR "Here we go for source file: $sf\n" if $Verbose;
170 ($bf = $sf) =~ s/\.l?(hs|y)$//;
173 foreach $obj (@Obj_suffix) {
175 foreach $suff (@File_suffix) {
176 $str .= "$bf.${suff}_$obj ";
179 push(@Depend_lines, "$str: $sf\n");
180 # if it's a literate file, .lhs or .ly? (happy specs), then we de-literatize it:
181 if ( $sf !~ /\.l(hs|y)$/ ) {
184 $file_to_read = "$Tmp_prefix.hs";
185 local($to_do) = "$Unlit $sf $file_to_read";
186 &run_something($to_do, 'unlit');
188 &slurp_file_for_imports($file_to_read, $sf);
190 if ( $sf =~ /\.l(hs|y)$/ ) {
191 unlink "$Tmp_prefix.hs";
196 # OK, mangle the Makefile
197 unlink("$Makefile.bak");
200 # If no output file exist as yet, create one.
202 if ( ! -f $Makefile.bak ) {
203 system("touch $Makefile.bak");
205 if ( -f $Makefile ) {
206 rename($Makefile,"$Makefile.bak");
208 # now copy Makefile.bak into Makefile, rm'ing old dependencies
210 open(OMKF,"< $Makefile.bak") || die "$Pgm: can't open $Makefile.bak: $!\n";
211 open(NMKF,"> $Makefile") || die "$Pgm: can't open $Makefile: $!\n";
214 while ($_ && $_ ne $Begin_magic_str) { # copy through, 'til Begin_magic_str
218 while ($_ && $_ ne $End_magic_str) { # delete 'til End_magic_str
221 # insert dependencies
222 print $Begin_magic_str, @Depend_lines, $End_magic_str || die "Failed to write out dependencies ($!)";
224 while (<OMKF>) { # copy the rest through
225 print $_ || die "Failed to write out dependencies ($!)";
227 close(NMKF) || exit(1);
228 close(OMKF) || exit(1);
231 sub mangle_command_line_args {
232 while($_ = $ARGV[0]) {
238 } elsif ( /^-D(.*)/ ) { # recognized wherever they occur
241 $Import_dirs = ''; # import path cleared!
242 } elsif ( /^-i(.*)/ ) {
243 $Import_dirs = "$1:$Import_dirs";
245 $Include_dirs .= " $_";
246 } elsif ( /^-syslib$/ ) {
247 push(@Syslibs, &grab_arg_arg($_,''));
248 } elsif ( /^-fglasgow-exts$/ ) {
249 push(@Syslibs, 'exts');
250 } elsif ($Dashdashes_seen != 1) { # not between -- ... --
255 } elsif ( /^-f(.*)/ ) {
256 $Makefile = &grab_arg_arg('-f',$1);
257 } elsif ( /^-o(.*)/ ) {
258 local($suff) = &grab_arg_arg('-o',$1);
259 # Weed out existing entry .. there must be a better way of doing this
260 # with arrays (non-assoc) ! -- sof
261 @Obj_suffix = grep(!/$suff/,@Obj_suffix);
262 push(@Obj_suffix, $suff);
264 # --exclude-module=mod => it's stable, trust me!
266 } elsif ( /^-(x|-exclude-module=)(.*)/ ) {
267 local($thing) = &grab_arg_arg($1,$2);
268 $IgnoreMe{$thing} = 'y';
269 } elsif ( /^-(X|-exclude-directory=)(.*)/ ) {
270 foreach $d ( split(/:/,&grab_arg_arg($1, $2)) ) {
271 push(@Ignore_dirs,"$d");
273 } elsif ( /^--include-module=(.*)/ ) {
274 local($thing) = &grab_arg_arg($1,$2);
275 $IgnoreMe{$thing} = 'n';
276 } elsif ( /^--include-prelude$/ ) {
277 $Include_prelude = 1;
278 } elsif ( /^-s(.*)/ ) {
279 local($suff) = &grab_arg_arg('-s',$1);
280 push(@File_suffix, $suff);
282 print STDERR "$Pgm: unknown option ignored: $_\n";
285 push(@Src_files, $_);
288 # Removed support for picking up plausible source file
289 # names inside the ghc options chunk of the command
290 # line. It failed to deal with `option-value' stuff present
291 # on some invocations of ghc (e.g., "-ohi foo.baz").
294 # } elsif ($Dashdashes_seen == 1) {
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 $d!\n" if ($Warnings);
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 $orig_src_file);
367 &process_dependency('import',0,'Prelude') if ($Include_prelude);
369 # we mangle #include's so they will also leave something
370 # behind to indicate the dependency on _them_
372 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 $Verbose;
374 open(SRCFILE, "${SED} -e '/^# *include/{p;s/^# *include/!include/;};s/'\\''//g;s/\"//g' $file_to_read | $Cpp $Include_dirs -I$last_seen_dir @Defines |")
375 || die "$Pgm: Can't open $file_to_read: $!\n";
379 # import {-# SOURCE #-} Foo (bar) generates dependencies on the source file only,
380 # the compiler will deal with the absence of Foo.hi by consulting the
381 # source for Foo directly. (for dealing with recursive modules).
383 next unless (/^>?\s*(import)(\s+{-#\s*SOURCE\s*#-})?(\s+qualified)?\s+([A-Z][A-Za-z0-9_']*)/ || /^!(include)(\s+)"(\S+)"/);
385 $source = ( $2 ne '') ? 1 : 0;
388 next if $modname eq '';
389 &process_dependency($todo,$source,$modname);
391 close(SRCFILE) || exit(1);
396 sub process_dependency {
397 local($todo,$source,$modname) = @_;
399 if ($todo eq 'import') {
400 if ( $ModuleIn{$modname} ) {
401 $follow_file = "$ModuleIn{$modname}/$modname.hi";
404 &find_in_Import_dirs($orig_src_file, $modname, $last_seen_dir, $source );
408 = &find_in_Include_dirs($orig_src_file, $modname, $last_seen_dir);
411 if (! $follow_file) { # it didnae find anything
412 die "$orig_src_file: Couldn't handle: $_\n";
414 } else { # it found something
415 if ($follow_file ne '__ignore__') {
416 local($int_file) = $follow_file;
418 if ( $int_file !~ /\.(l?hs|hi|l?y)$/ ) {
420 foreach $obj (@Obj_suffix) {
422 foreach $suff (@File_suffix) {
423 $str .= "$bf.${suff}_$obj ";
426 push(@Depend_lines, "$str: $int_file\n");
428 $int_file =~ s/\.l?hs$//;
429 $int_file =~ s/\.l?y$//;
430 $int_file =~ s/\.hi$//;
434 $source_dep = "$int_file.hi-boot";
437 foreach $obj (@Obj_suffix) {
440 push(@Depend_lines, "$str: $int_file.hi\n");
444 foreach $suff (@File_suffix) {
446 foreach $obj (@Obj_suffix) {
447 $str .= "$bf.${suff}_$obj ";
449 push(@Depend_lines, "$str: $int_file.${suff}_hi\n");
453 foreach $obj (@Obj_suffix) {
455 foreach $suff (@File_suffix) {
456 $str .= "$bf.${suff}_$obj ";
459 push(@Depend_lines, "$str: $source_dep\n");
466 # when we see something, we cache that fact ('y').
467 # also, when we get a miss, we cache that (so we don't try later); ('n')
470 sub find_in_Import_dirs {
471 local($orig_src_file, $modname, $last_seen_dir, $source) = @_;
473 local($do_magical_check) = 0;
474 local($name_to_check);
476 # do it the old hard way: hop along Import_dir list
477 foreach $import_dir (@Import_dirs) {
479 if ($import_dir eq '.') {
480 # record that we should do a SPECIAL try for a file in last_seen_dir (LAST)
481 $do_magical_check = 1;
484 $name_to_check = "$import_dir/$modname.hi";
485 if ( $FileExists{$name_to_check} ne 'n' ) { # either 'y' or nothing
486 print STDERR "trying $name_to_check...\n" if $Verbose >= 2; # very verbose
487 return($name_to_check) if $FileExists{$name_to_check} eq 'y';
488 if (-f $name_to_check) {
489 $FileExists{$name_to_check} = 'y';
490 return($name_to_check) ;
492 $FileExists{$name_to_check} = 'n';
496 for $suff ('hs', 'lhs', 'ly', 'y') {
497 $name_to_check = "$import_dir/$modname.$suff";
498 print STDERR "trying... $name_to_check\n" if $Verbose >= 2; # very verbose
499 return($name_to_check) if -f $name_to_check;
503 $name_to_check = "$import_dir/$modname.hi-boot";
504 print STDERR "trying... $name_to_check\n" if $Verbose >= 2; # very verbose
505 return($name_to_check) if -f $name_to_check;
508 if ($do_magical_check == 1) {
509 $name_to_check = "$last_seen_dir/$modname.hi";
511 if ( $FileExists{$name_to_check} ne 'n' ) { # either 'y' or nothing
512 print STDERR "trying $name_to_check...\n" if $Verbose >= 2; # very verbose
513 return($name_to_check) if $FileExists{$name_to_check} eq 'y';
514 if (-f $name_to_check) {
515 $FileExists{$name_to_check} = 'y';
516 return($name_to_check) ;
518 $FileExists{$name_to_check} = 'n';
522 for $suff ('lhs', 'hs', 'ly', 'y') {
523 $name_to_check = "$last_seen_dir/$modname.$suff";
524 print STDERR "trying... $name_to_check\n" if $Verbose >= 2; # very verbose
525 return($name_to_check) if -f $name_to_check;
529 # OK, maybe it's referring to something in a system library
530 #foreach $lib ( @Syslibs ) {
531 # return('__ignore__') if $LibIfaces{"$lib:$modname"};
534 # Last hope: referring to a Prelude interface
535 return('__ignore__') if ( $IgnoreMe{$modname} eq 'y' );
537 die "No file `$modname.hi', `$modname.lhs', `$modname.hs' (reqd from file `$orig_src_file')\namong import directories:\n\t$Import_dirs\n";
540 sub find_in_Include_dirs {
541 local($orig_src_file, $name, $last_seen_dir) = @_;
543 local($do_magical_check) = 0;
545 # no funny name guessing here
547 # hop along Include_dir list
548 foreach $include_dir (@Include_dirs) {
549 $include_dir =~ s/^-I//;
552 if ($include_dir eq '.') {
553 # record that we should do a SPECIAL try for a file in last_seen_dir (LAST)
554 $do_magical_check = 1;
556 print STDERR "trying $include_dir/$name...\n" if $Verbose >= 2; # very verbose
557 if (-f "$include_dir/$name") {
558 return("$include_dir/$name");
561 if ($do_magical_check == 1) {
562 print STDERR "trying $last_seen_dir/$name...\n" if $Verbose >= 2; # very verbose
563 if (-f "$last_seen_dir/$name") {
564 return("$last_seen_dir/$name");
567 die "No file `$name' (reqd from file `$orig_src_file') among include directories: $Include_dirs\n";
570 # out of the driver, actually
572 local($str_to_do, $tidy_name) = @_;
574 print STDERR "\n$tidy_name:\n\t" if $Verbose;
575 print STDERR "$str_to_do\n" if $Verbose;
577 local($return_val) = system($str_to_do) >> 8;
579 if ($return_val != 0) {
580 local($die_msg) = "$Pgm: execution of the $tidy_name had trouble";
581 $die_msg .= " (program not found)" if $return_val == 255;
582 $die_msg .= " ($!)" if $Verbose && $! != 0;
584 print STDERR $die_msg;