4 use File::Basename qw(basename dirname);
7 # List explicitly here the variables you want Configure to
8 # generate. Metaconfig only looks for shell variables, so you
9 # have to mention them as if they were shell variables, not
10 # %Config entries. Thus you write
12 # to ensure Configure will look for $Config{startperl}.
15 # This forces PL files to create target in same directory as PL file.
16 # This is so that make depend always knows where to find PL derivatives.
19 $file = basename($0, '.PL');
20 $file .= '.com' if $^O eq 'VMS';
22 open OUT,">$file" or die "Can't create $file: $!";
24 print "Extracting $file (with variable substitutions)\n";
26 # In this section, perl variables will be expanded during extraction.
27 # You can use $Config{...} to use Configure variables.
29 print OUT <<"!GROK!THIS!";
31 eval 'exec $Config{perlpath} -S \$0 \${1+"\$@"}'
32 if \$running_under_some_shell;
35 # In the following, perl variables are not expanded during extraction.
37 print OUT <<'!NO!SUBS!';
42 use File::Path qw(mkpath);
45 # Make sure read permissions for all are set:
46 if (defined umask && (umask() & 0444)) {
47 umask (umask() & ~0444);
51 use vars qw($opt_D $opt_d $opt_r $opt_l $opt_h $opt_a $opt_Q $opt_e);
52 die "-r and -a options are mutually exclusive\n" if ($opt_r and $opt_a);
53 my @inc_dirs = inc_dirs() if $opt_a;
57 my $Dest_dir = $opt_d || $Config{installsitearch};
58 die "Destination directory $Dest_dir doesn't exist or isn't a directory\n"
71 @isatype{@isatype} = (1) x @isatype;
76 @ARGV = ('-') unless @ARGV;
78 build_preamble_if_necessary();
87 my ($t, $tab, %curargs, $new, $eval_index, $dir, $name, $args, $outfile);
88 my ($incl, $incl_type, $incl_quote, $next);
89 while (defined (my $file = next_file())) {
90 if (-l $file and -d $file) {
91 link_if_possible($file) if ($opt_l);
95 # Recover from header files with unbalanced cpp directives
99 # $eval_index goes into ``#line'' directives, to help locate syntax errors:
106 ($outfile = $file) =~ s/\.h$/.ph/ || next;
107 print "$file -> $outfile\n" unless $opt_Q;
108 if ($file =~ m|^(.*)/|) {
110 mkpath "$Dest_dir/$dir";
113 if ($opt_a) { # automagic mode: locate header file in @inc_dirs
114 foreach (@inc_dirs) {
120 open(IN,"$file") || (($Exit = 1),(warn "Can't open $file: $!\n"),next);
121 open(OUT,">$Dest_dir/$outfile") || die "Can't create $outfile: $!\n";
125 "require '_h2ph_pre.ph';\n\n",
126 "no warnings qw(redefine misc);\n\n";
128 while (defined (local $_ = next_line($file))) {
130 if (s/^define\s+(\w+)//) {
134 s/\(\w+\s*\(\*\)\s*\(\w*\)\)\s*(-?\d+)/$1/; # (int (*)(foo_t))0
135 if (s/^\(([\w,\s]*)\)//) {
140 foreach my $arg (split(/,\s*/,$args)) {
141 $arg =~ s/^\s*([^\s].*[^\s])\s*$/$1/;
144 $args =~ s/\b(\w)/\$$1/g;
145 $args = "my($args) = \@_;\n$t ";
149 $new =~ s/(["\\])/\\$1/g; #"]);
151 $new = reindent($new);
152 $args = reindent($args);
154 $new =~ s/(['\\])/\\$1/g; #']);
157 "eval \"\\n#line $eval_index $outfile\\n\" . 'sub $name $proto\{\n$t ${args}eval q($new);\n$t}' unless defined(\&$name);\n";
161 "eval 'sub $name $proto\{\n$t ${args}eval q($new);\n$t}' unless defined(\&$name);\n";
164 print OUT "unless(defined(\&$name)) {\n sub $name $proto\{\n\t${args}eval q($new);\n }\n}\n";
170 $new = 1 if $new eq '';
171 $new = reindent($new);
172 $args = reindent($args);
174 $new =~ s/(['\\])/\\$1/g; #']);
177 print OUT $t,"eval \"\\n#line $eval_index $outfile\\n\" . 'sub $name () {",$new,";}' unless defined(\&$name);\n";
180 print OUT $t,"eval 'sub $name () {",$new,";}' unless defined(\&$name);\n";
183 # Shunt around such directives as `#define FOO FOO':
184 next if " \&$name" eq $new;
186 print OUT $t,"unless(defined(\&$name)) {\n sub $name () {\t",$new,";}\n}\n";
189 } elsif (/^(include|import|include_next)\s*([<\"])(.*)[>\"]/) {
193 if (($incl_type eq 'include_next') ||
194 ($opt_e && exists($bad_file{$incl}))) {
195 $incl =~ s/\.h$/.ph/;
199 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
200 print OUT ($t, "my(\@REM);\n");
201 if ($incl_type eq 'include_next') {
203 "my(\%INCD) = map { \$INC{\$_} => 1 } ",
204 "(grep { \$_ eq \"$incl\" } ",
207 "\@REM = map { \"\$_/$incl\" } ",
208 "(grep { not exists(\$INCD{\"\$_/$incl\"})",
209 " and -f \"\$_/$incl\" } \@INC);\n");
212 "\@REM = map { \"\$_/$incl\" } ",
213 "(grep {-r \"\$_/$incl\" } \@INC);\n");
216 "require \"\$REM[0]\" if \@REM;\n");
218 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
222 "warn(\$\@) if \$\@;\n");
224 $incl =~ s/\.h$/.ph/;
225 # copy the prefix in the quote syntax (#include "x.h") case
226 if ($incl !~ m|/| && $incl_quote eq q{"} && $file =~ m|^(.*)/|) {
229 print OUT $t,"require '$incl';\n";
231 } elsif (/^ifdef\s+(\w+)/) {
232 print OUT $t,"if(defined(&$1)) {\n";
234 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
235 } elsif (/^ifndef\s+(\w+)/) {
236 print OUT $t,"unless(defined(&$1)) {\n";
238 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
239 } elsif (s/^if\s+//) {
244 print OUT $t,"if($new) {\n";
246 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
247 } elsif (s/^elif\s+//) {
253 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
254 print OUT $t,"}\n elsif($new) {\n";
256 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
259 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
260 print OUT $t,"} else {\n";
262 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
265 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
267 } elsif(/^undef\s+(\w+)/) {
268 print OUT $t, "undef(&$1) if defined(&$1);\n";
269 } elsif(/^error\s+(".*")/) {
270 print OUT $t, "die($1);\n";
271 } elsif(/^error\s+(.*)/) {
272 print OUT $t, "die(\"", quotemeta($1), "\");\n";
273 } elsif(/^warning\s+(.*)/) {
274 print OUT $t, "warn(\"", quotemeta($1), "\");\n";
275 } elsif(/^ident\s+(.*)/) {
276 print OUT $t, "# $1\n";
278 } elsif (/^\s*(typedef\s*)?enum\s*(\s+[a-zA-Z_]\w*\s*)?/) { # { for vi
279 until(/\{[^}]*\}.*;/ || /;/) {
280 last unless defined ($next = next_line($file));
282 # drop "#define FOO FOO" in enums
283 $next =~ s/^\s*#\s*define\s+(\w+)\s+\1\s*$//;
284 # #defines in enums (aliases)
285 $next =~ s/^\s*#\s*define\s+(\w+)\s+(\w+)\s*$/$1 = $2,/;
287 print OUT "# $next\n" if $opt_D;
289 s/#\s*if.*?#\s*endif//g; # drop #ifdefs
292 next unless /^\s?(typedef\s?)?enum\s?([a-zA-Z_]\w*)?\s?\{(.*)\}\s?([a-zA-Z_]\w*)?\s?;/;
293 (my $enum_subs = $3) =~ s/\s//g;
294 my @enum_subs = split(/,/, $enum_subs);
296 foreach my $enum (@enum_subs) {
297 my ($enum_name, $enum_value) = $enum =~ /^([a-zA-Z_]\w*)(=.+)?$/;
299 $enum_value =~ s/^=//;
300 $enum_val = (length($enum_value) ? $enum_value : $enum_val + 1);
303 "eval(\"\\n#line $eval_index $outfile\\n",
304 "sub $enum_name () \{ $enum_val; \}\") ",
305 "unless defined(\&$enum_name);\n");
309 "eval(\"sub $enum_name () \{ $enum_val; \}\") ",
310 "unless defined(\&$enum_name);\n");
313 } elsif (/^(?:__extension__\s+)?(?:extern|static)\s+(?:__)?inline(?:__)?\s+/
314 and !/;\s*$/ and !/{\s*}\s*$/)
316 # This is a hack to parse the inline functions in the glibc headers.
317 # Warning: massive kludge ahead. We suppose inline functions
318 # are mainly constructed like macros.
320 last unless defined ($next = next_line($file));
322 undef $_, last if $next =~ /__THROW\s*;/
323 or $next =~ /^(__extension__|extern|static)\b/;
325 print OUT "# $next\n" if $opt_D;
326 last if $next =~ /^}|^{.*}\s*$/;
328 next if not defined; # because it's only a prototype
329 s/\b(__extension__|extern|static|(?:__)?inline(?:__)?)\b//g;
330 # violently drop #ifdefs
331 s/#\s*if.*?#\s*endif//g
332 and print OUT "# some #ifdef were dropped here -- fill in the blanks\n";
333 if (s/^(?:\w|\s|\*)*\s(\w+)\s*//) {
336 warn "name not found"; next; # shouldn't occur...
339 if (s/^\(([^()]*)\)\s*(\w+\s*)*//) {
340 for my $arg (split /,/, $1) {
341 if ($arg =~ /(\w+)\s*$/) {
349 ? "my(" . (join ',', map "\$$_", @args) . ") = \@_;\n$t "
352 my $proto = @args ? '' : '() ';
354 s/\breturn\b//g; # "return" doesn't occur in macros usually...
356 # try to find and perlify local C variables
357 our @local_variables = (); # needs to be a our(): (?{...}) bug workaround
360 my $typelist = join '|', keys %isatype;
362 (?:(?:__)?const(?:__)?\s+)?
363 (?:(?:un)?signed\s+)?
367 (?{ push @local_variables, $1 })
371 (?:(?:__)?const(?:__)?\s+)?
372 (?:(?:un)?signed\s+)?
376 (?{ push @local_variables, $1 })
380 $new =~ s/&$_\b/\$$_/g for @local_variables;
381 $new =~ s/(["\\])/\\$1/g; #"]);
382 # now that's almost like a macro (we hope)
386 $Is_converted{$file} = 1;
387 if ($opt_e && exists($bad_file{$file})) {
388 unlink($Dest_dir . '/' . $outfile);
392 queue_includes_from($file) if $opt_a;
396 if ($opt_e && (scalar(keys %bad_file) > 0)) {
397 warn "Was unable to convert the following files:\n";
398 warn "\t" . join("\n\t",sort(keys %bad_file)) . "\n";
404 $new = '"(assembly code)"' and return if /\b__asm__\b/; # freak out.
407 $joined_args = join('|', keys(%curargs));
410 s/^\&\&// && do { $new .= " &&"; next;}; # handle && operator
411 s/^\&([\(a-z\)]+)/$1/i; # hack for things that take the address of
412 s/^(\s+)// && do {$new .= ' '; next;};
413 s/^0X([0-9A-F]+)[UL]*//i
416 if (length $hex > 8 && !$Config{use64bitint}) {
417 # Croak if nv_preserves_uv_bits < 64 ?
418 $new .= hex(substr($hex, -8)) +
419 2**32 * hex(substr($hex, 0, -8));
420 # The above will produce "errorneus" code
421 # if the hex constant was e.g. inside UINT64_C
422 # macro, but then again, h2ph is an approximation.
424 $new .= lc("0x$hex");
427 s/^(-?\d+\.\d+E[-+]?\d+)[FL]?//i && do {$new .= $1; next;};
428 s/^(\d+)\s*[LU]*//i && do {$new .= $1; next;};
429 s/^("(\\"|[^"])*")// && do {$new .= $1; next;};
430 s/^'((\\"|[^"])*)'// && do {
432 $new .= "ord('\$$1')";
438 # replace "sizeof(foo)" with "{foo}"
439 # also, remove * (C dereference operator) to avoid perl syntax
440 # problems. Where the %sizeof array comes from is anyone's
441 # guess (c2ph?), but this at least avoids fatal syntax errors.
442 # Behavior is undefined if sizeof() delimiters are unbalanced.
443 # This code was modified to able to handle constructs like this:
444 # sizeof(*(p)), which appear in the HP-UX 10.01 header files.
445 s/^sizeof\s*\(// && do {
447 my $lvl = 1; # already saw one open paren
448 # tack { on the front, and skip it in the loop
451 # find balanced closing paren
452 while ($index <= length($_) && $lvl > 0) {
453 $lvl++ if substr($_, $index, 1) eq "(";
454 $lvl-- if substr($_, $index, 1) eq ")";
457 # tack } on the end, replacing )
458 substr($_, $index - 1, 1) = "}";
459 # remove pesky * operators within the sizeof argument
460 substr($_, 0, $index - 1) =~ s/\*//g;
464 /\(([\w\s]+)[\*\s]*\)\s*[\w\(]/ && do {
466 foreach (split /\s+/, $1) { # Make sure all the words are types,
467 unless($isatype{$_} or $_ eq 'struct' or $_ eq 'union'){
473 s/\([\w\s]+[\*\s]*\)// && next; # then eliminate them.
476 # struct/union member, including arrays:
477 s/^([_A-Z]\w*(\[[^\]]+\])?((\.|->)[_A-Z]\w*(\[[^\]]+\])?)+)//i && do {
479 $id =~ s/(\.|(->))([^\.\-]*)/->\{$3\}/g;
480 $id =~ s/\b([^\$])($joined_args)/$1\$$2/g if length($joined_args);
481 while($id =~ /\[\s*([^\$\&\d\]]+)\]/) {
484 if(exists($curargs{$index})) {
489 $id =~ s/\[\s*([^\$\&\d\]]+)\]/[$index]/;
493 s/^([_a-zA-Z]\w*)// && do {
495 if ($id eq 'struct' || $id eq 'union') {
499 } elsif ($id =~ /^((un)?signed)|(long)|(short)$/) {
500 while (s/^\s+(\w+)//) { $id .= ' ' . $1; }
505 $new .= '->' if /^[\[\{]/;
506 } elsif ($id eq 'defined') {
509 s/^\s*\((\w),/("$1",/ if $id =~ /^_IO[WR]*$/i; # cheat
511 } elsif ($isatype{$id}) {
512 if ($new =~ /\{\s*$/) {
514 } elsif ($new =~ /\(\s*$/ && /^[\s*]*\)/) {
518 $new .= q(').$id.q(');
522 if ($new =~ /defined\s*$/) {
523 $new .= '(&' . $id . ')';
524 } elsif ($new =~ /defined\s*\($/) {
527 $new .= '(defined(&' . $id . ') ? &' . $id . ' : undef)';
537 s/^(.)// && do { if ($1 ne '#') { $new .= $1; } next;};
546 my $pre_sub_tri_graphs = 1;
548 READ: while (not eof IN) {
551 next unless length $in;
554 if ($pre_sub_tri_graphs) {
555 # Preprocess all tri-graphs
556 # including things stuck in quoted string constants.
557 $in =~ s/\?\?=/#/g; # | ??=| #|
558 $in =~ s/\?\?\!/|/g; # | ??!| ||
559 $in =~ s/\?\?'/^/g; # | ??'| ^|
560 $in =~ s/\?\?\(/[/g; # | ??(| [|
561 $in =~ s/\?\?\)/]/g; # | ??)| ]|
562 $in =~ s/\?\?\-/~/g; # | ??-| ~|
563 $in =~ s/\?\?\//\\/g; # | ??/| \|
564 $in =~ s/\?\?</{/g; # | ??<| {|
565 $in =~ s/\?\?>/}/g; # | ??>| }|
567 if ($in =~ /^\#ifdef __LANGUAGE_PASCAL__/) {
568 # Tru64 disassembler.h evilness: mixed C and Pascal.
575 if ($in =~ /^extern inline / && # Inlined assembler.
576 $^O eq 'linux' && $file =~ m!(?:^|/)asm/[^/]+\.h$!) {
583 if ($in =~ s/\\$//) { # \-newline
586 } elsif ($in =~ s/^([^"'\\\/]+)//) { # Passthrough
588 } elsif ($in =~ s/^(\\.)//) { # \...
590 } elsif ($in =~ /^'/) { # '...
591 if ($in =~ s/^('(\\.|[^'\\])*')//) {
596 } elsif ($in =~ /^"/) { # "...
597 if ($in =~ s/^("(\\.|[^"\\])*")//) {
602 } elsif ($in =~ s/^\/\/.*//) { # //...
604 } elsif ($in =~ m/^\/\*/) { # /*...
605 # C comment removal adapted from perlfaq6:
606 if ($in =~ s/^\/\*[^*]*\*+([^\/*][^*]*\*+)*\///) {
608 } else { # Incomplete /* */
611 } elsif ($in =~ s/^(\/)//) { # /...
613 } elsif ($in =~ s/^([^\'\"\\\/]+)//) {
615 } elsif ($^O eq 'linux' &&
616 $file =~ m!(?:^|/)linux/byteorder/pdp_endian\.h$! &&
617 $in =~ s!\'T KNOW!!) {
618 $out =~ s!I DON$!I_DO_NOT_KNOW!;
621 warn "Cannot parse $file:\n$in\n";
622 $bad_file{$file} = 1;
627 die "Cannot parse:\n$in\n";
632 last READ if $out =~ /\S/;
639 # Handle recursive subdirectories without getting a grotesquely big stack.
640 # Could this be implemented using File::Find?
648 if ($file eq '-' or -f $file or -l $file) {
654 print STDERR "Skipping directory `$file'\n";
659 print STDERR "Skipping `$file': not a file or directory\n";
667 # Put all the files in $directory into @ARGV for processing.
670 my ($directory) = @_;
672 $directory =~ s:/$::;
674 opendir DIR, $directory;
675 foreach (readdir DIR) {
676 next if ($_ eq '.' or $_ eq '..');
678 # expand_glob() is going to be called until $ARGV[0] isn't a
679 # directory; so push directories, and unshift everything else.
680 if (-d "$directory/$_") { push @ARGV, "$directory/$_" }
681 else { unshift @ARGV, "$directory/$_" }
687 # Given $file, a symbolic link to a directory in the C include directory,
688 # make an equivalent symbolic link in $Dest_dir, if we can figure out how.
689 # Otherwise, just duplicate the file or directory.
693 my $target = eval 'readlink($dirlink)';
695 if ($target =~ m:^\.\./: or $target =~ m:^/:) {
696 # The target of a parent or absolute link could leave the $Dest_dir
697 # hierarchy, so let's put all of the contents of $dirlink (actually,
698 # the contents of $target) into @ARGV; as a side effect down the
699 # line, $dirlink will get created as an _actual_ directory.
700 expand_glob($dirlink);
702 if (-l "$Dest_dir/$dirlink") {
703 unlink "$Dest_dir/$dirlink" or
704 print STDERR "Could not remove link $Dest_dir/$dirlink: $!\n";
707 if (eval 'symlink($target, "$Dest_dir/$dirlink")') {
708 print "Linking $target -> $Dest_dir/$dirlink\n";
710 # Make sure that the link _links_ to something:
711 if (! -e "$Dest_dir/$target") {
712 mkpath("$Dest_dir/$target", 0755) or
713 print STDERR "Could not create $Dest_dir/$target/\n";
716 print STDERR "Could not symlink $target -> $Dest_dir/$dirlink: $!\n";
722 # Push all #included files in $file onto our stack, except for STDIN
723 # and files we've already processed.
724 sub queue_includes_from
729 return if ($file eq "-");
731 open HEADER, $file or return;
732 while (defined($line = <HEADER>)) {
733 while (/\\$/) { # Handle continuation lines
738 if ($line =~ /^#\s*include\s+([<"])(.*?)[>"]/) {
739 my ($delimiter, $new_file) = ($1, $2);
740 # copy the prefix in the quote syntax (#include "x.h") case
741 if ($delimiter eq q{"} && $file =~ m|^(.*)/|) {
742 $new_file = "$1/$new_file";
744 push(@ARGV, $new_file) unless $Is_converted{$new_file};
751 # Determine include directories; $Config{usrinc} should be enough for (all
752 # non-GCC?) C compilers, but gcc uses additional include directories.
755 my $from_gcc = `LC_ALL=C $Config{cc} -v 2>&1`;
756 if( !( $from_gcc =~ s:^Reading specs from (.*?)/specs\b.*:$1/include:s ) )
758 $from_gcc = `LC_ALL=C $Config{cc} -print-search-dirs 2>&1`;
759 if ( !($from_gcc =~ s/^install:\s*([^\s]+[^\s\/])([\s\/]*).*$/$1\/include/s) )
764 length($from_gcc) ? ($from_gcc, $from_gcc . "-fixed", $Config{usrinc}) : ($Config{usrinc});
768 # Create "_h2ph_pre.ph", if it doesn't exist or was built by a different
770 sub build_preamble_if_necessary
772 # Increment $VERSION every time this function is modified:
774 my $preamble = "$Dest_dir/_h2ph_pre.ph";
776 # Can we skip building the preamble file?
778 # Extract version number from first line of preamble:
779 open PREAMBLE, $preamble or die "Cannot open $preamble: $!";
780 my $line = <PREAMBLE>;
781 $line =~ /(\b\d+\b)/;
782 close PREAMBLE or die "Cannot close $preamble: $!";
784 # Don't build preamble if a compatible preamble exists:
785 return if $1 == $VERSION;
788 my (%define) = _extract_cc_defines();
790 open PREAMBLE, ">$preamble" or die "Cannot open $preamble: $!";
791 print PREAMBLE "# This file was created by h2ph version $VERSION\n";
793 foreach (sort keys %define) {
795 print PREAMBLE "# $_=$define{$_}\n";
797 if ($define{$_} =~ /^\((.*)\)$/) {
798 # parenthesized value: d=(v)
801 if ($define{$_} =~ /^([+-]?(\d+)?\.\d+([eE][+-]?\d+)?)[FL]?$/) {
804 "unless (defined &$_) { sub $_() { $1 } }\n\n";
805 } elsif ($define{$_} =~ /^([+-]?\d+)U?L{0,2}$/i) {
808 "unless (defined &$_) { sub $_() { $1 } }\n\n";
809 } elsif ($define{$_} =~ /^\w+$/) {
811 "unless (defined &$_) { sub $_() { &$define{$_} } }\n\n";
814 "unless (defined &$_) { sub $_() { \"",
815 quotemeta($define{$_}), "\" } }\n\n";
818 print PREAMBLE "\n1;\n"; # avoid 'did not return a true value' when empty
819 close PREAMBLE or die "Cannot close $preamble: $!";
823 # %Config contains information on macros that are pre-defined by the
824 # system's compiler. We need this information to make the .ph files
825 # function with perl as the .h files do with cc.
826 sub _extract_cc_defines
829 my $allsymbols = join " ",
830 @Config{'ccsymbols', 'cppsymbols', 'cppccsymbols'};
832 # Split compiler pre-definitions into `key=value' pairs:
833 while ($allsymbols =~ /([^\s]+)=((\\\s|[^\s])+)/g) {
836 print STDERR "$_: $1 -> $2\n";
846 ##############################################################################
851 h2ph - convert .h C header files to .ph Perl header files
855 B<h2ph [-d destination directory] [-r | -a] [-l] [headerfiles]>
860 converts any C header files specified to the corresponding Perl header file
862 It is most easily run while in /usr/include:
864 cd /usr/include; h2ph * sys/*
868 cd /usr/include; h2ph * sys/* arpa/* netinet/*
872 cd /usr/include; h2ph -r -l .
874 The output files are placed in the hierarchy rooted at Perl's
875 architecture dependent library directory. You can specify a different
876 hierarchy with a B<-d> switch.
878 If run with no arguments, filters standard input to standard output.
884 =item -d destination_dir
886 Put the resulting B<.ph> files beneath B<destination_dir>, instead of
887 beneath the default Perl library location (C<$Config{'installsitearch'}>).
891 Run recursively; if any of B<headerfiles> are directories, then run I<h2ph>
892 on all files in those directories (and their subdirectories, etc.). B<-r>
893 and B<-a> are mutually exclusive.
897 Run automagically; convert B<headerfiles>, as well as any B<.h> files
898 which they include. This option will search for B<.h> files in all
899 directories which your C compiler ordinarily uses. B<-a> and B<-r> are
904 Symbolic links will be replicated in the destination directory. If B<-l>
905 is not specified, then links are skipped over.
909 Put ``hints'' in the .ph files which will help in locating problems with
910 I<h2ph>. In those cases when you B<require> a B<.ph> file containing syntax
911 errors, instead of the cryptic
913 [ some error condition ] at (eval mmm) line nnn
915 you will see the slightly more helpful
917 [ some error condition ] at filename.ph line nnn
919 However, the B<.ph> files almost double in size when built using B<-h>.
923 Include the code from the B<.h> file as a comment in the B<.ph> file.
924 This is primarily used for debugging I<h2ph>.
928 ``Quiet'' mode; don't print out the names of the files being converted.
934 No environment variables are used.
953 The usual warnings if it can't read or write the files involved.
957 Doesn't construct the %sizeof array for you.
959 It doesn't handle all C constructs, but it does attempt to isolate
960 definitions inside evals so that you can get at the definitions
961 that it can translate.
963 It's only intended as a rough tool.
964 You may need to dicker with the files produced.
966 You have to run this program by hand; it's not run as part of the Perl
969 Doesn't handle complicated expressions built piecemeal, a la:
979 Doesn't necessarily locate all of your C compiler's internally-defined
986 close OUT or die "Can't close $file: $!";
987 chmod 0755, $file or die "Can't reset permissions for $file: $!\n";
988 exec("$Config{'eunicefix'} $file") if $Config{'eunicefix'} ne ':';