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, $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 'redefine';\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*[<\"](.*)[>\"]/) {
192 if (($incl_type eq 'include_next') ||
193 ($opt_e && exists($bad_file{$incl}))) {
194 $incl =~ s/\.h$/.ph/;
198 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
199 print OUT ($t, "my(\@REM);\n");
200 if ($incl_type eq 'include_next') {
202 "my(\%INCD) = map { \$INC{\$_} => 1 } ",
203 "(grep { \$_ eq \"$incl\" } ",
206 "\@REM = map { \"\$_/$incl\" } ",
207 "(grep { not exists(\$INCD{\"\$_/$incl\"})",
208 " and -f \"\$_/$incl\" } \@INC);\n");
211 "\@REM = map { \"\$_/$incl\" } ",
212 "(grep {-r \"\$_/$incl\" } \@INC);\n");
215 "require \"\$REM[0]\" if \@REM;\n");
217 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
221 "warn(\$\@) if \$\@;\n");
223 $incl =~ s/\.h$/.ph/;
224 print OUT $t,"require '$incl';\n";
226 } elsif (/^ifdef\s+(\w+)/) {
227 print OUT $t,"if(defined(&$1)) {\n";
229 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
230 } elsif (/^ifndef\s+(\w+)/) {
231 print OUT $t,"unless(defined(&$1)) {\n";
233 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
234 } elsif (s/^if\s+//) {
239 print OUT $t,"if($new) {\n";
241 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
242 } elsif (s/^elif\s+//) {
248 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
249 print OUT $t,"}\n elsif($new) {\n";
251 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
254 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
255 print OUT $t,"} else {\n";
257 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
260 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
262 } elsif(/^undef\s+(\w+)/) {
263 print OUT $t, "undef(&$1) if defined(&$1);\n";
264 } elsif(/^error\s+(".*")/) {
265 print OUT $t, "die($1);\n";
266 } elsif(/^error\s+(.*)/) {
267 print OUT $t, "die(\"", quotemeta($1), "\");\n";
268 } elsif(/^warning\s+(.*)/) {
269 print OUT $t, "warn(\"", quotemeta($1), "\");\n";
270 } elsif(/^ident\s+(.*)/) {
271 print OUT $t, "# $1\n";
273 } elsif (/^\s*(typedef\s*)?enum\s*(\s+[a-zA-Z_]\w*\s*)?/) { # { for vi
274 until(/\{[^}]*\}.*;/ || /;/) {
275 last unless defined ($next = next_line($file));
277 # drop "#define FOO FOO" in enums
278 $next =~ s/^\s*#\s*define\s+(\w+)\s+\1\s*$//;
279 # #defines in enums (aliases)
280 $next =~ s/^\s*#\s*define\s+(\w+)\s+(\w+)\s*$/$1 = $2,/;
282 print OUT "# $next\n" if $opt_D;
284 s/#\s*if.*?#\s*endif//g; # drop #ifdefs
287 next unless /^\s?(typedef\s?)?enum\s?([a-zA-Z_]\w*)?\s?\{(.*)\}\s?([a-zA-Z_]\w*)?\s?;/;
288 (my $enum_subs = $3) =~ s/\s//g;
289 my @enum_subs = split(/,/, $enum_subs);
291 foreach my $enum (@enum_subs) {
292 my ($enum_name, $enum_value) = $enum =~ /^([a-zA-Z_]\w*)(=.+)?$/;
294 $enum_value =~ s/^=//;
295 $enum_val = (length($enum_value) ? $enum_value : $enum_val + 1);
298 "eval(\"\\n#line $eval_index $outfile\\n",
299 "sub $enum_name () \{ $enum_val; \}\") ",
300 "unless defined(\&$enum_name);\n");
304 "eval(\"sub $enum_name () \{ $enum_val; \}\") ",
305 "unless defined(\&$enum_name);\n");
308 } elsif (/^(?:__extension__\s+)?(?:extern|static)\s+(?:__)?inline(?:__)?\s+/
309 and !/;\s*$/ and !/{\s*}\s*$/)
311 # This is a hack to parse the inline functions in the glibc headers.
312 # Warning: massive kludge ahead. We suppose inline functions
313 # are mainly constructed like macros.
315 last unless defined ($next = next_line($file));
317 undef $_, last if $next =~ /__THROW\s*;/
318 or $next =~ /^(__extension__|extern|static)\b/;
320 print OUT "# $next\n" if $opt_D;
321 last if $next =~ /^}|^{.*}\s*$/;
323 next if not defined; # because it's only a prototype
324 s/\b(__extension__|extern|static|(?:__)?inline(?:__)?)\b//g;
325 # violently drop #ifdefs
326 s/#\s*if.*?#\s*endif//g
327 and print OUT "# some #ifdef were dropped here -- fill in the blanks\n";
328 if (s/^(?:\w|\s|\*)*\s(\w+)\s*//) {
331 warn "name not found"; next; # shouldn't occur...
334 if (s/^\(([^()]*)\)\s*(\w+\s*)*//) {
335 for my $arg (split /,/, $1) {
336 if ($arg =~ /(\w+)\s*$/) {
344 ? "my(" . (join ',', map "\$$_", @args) . ") = \@_;\n$t "
347 my $proto = @args ? '' : '() ';
349 s/\breturn\b//g; # "return" doesn't occur in macros usually...
351 # try to find and perlify local C variables
352 our @local_variables = (); # needs to be a our(): (?{...}) bug workaround
355 my $typelist = join '|', keys %isatype;
357 (?:(?:un)?signed\s+)?
361 (?{ push @local_variables, $1 })
365 (?:(?:un)?signed\s+)?
369 (?{ push @local_variables, $1 })
373 $new =~ s/&$_\b/\$$_/g for @local_variables;
374 $new =~ s/(["\\])/\\$1/g; #"]);
375 # now that's almost like a macro (we hope)
379 $Is_converted{$file} = 1;
380 if ($opt_e && exists($bad_file{$file})) {
381 unlink($Dest_dir . '/' . $outfile);
385 queue_includes_from($file) if $opt_a;
389 if ($opt_e && (scalar(keys %bad_file) > 0)) {
390 warn "Was unable to convert the following files:\n";
391 warn "\t" . join("\n\t",sort(keys %bad_file)) . "\n";
397 $new = '"(assembly code)"' and return if /\b__asm__\b/; # freak out.
400 $joined_args = join('|', keys(%curargs));
403 s/^\&\&// && do { $new .= " &&"; next;}; # handle && operator
404 s/^\&([\(a-z\)]+)/$1/i; # hack for things that take the address of
405 s/^(\s+)// && do {$new .= ' '; next;};
406 s/^0X([0-9A-F]+)[UL]*//i
409 if (length $hex > 8 && !$Config{use64bitint}) {
410 # Croak if nv_preserves_uv_bits < 64 ?
411 $new .= hex(substr($hex, -8)) +
412 2**32 * hex(substr($hex, 0, -8));
413 # The above will produce "errorneus" code
414 # if the hex constant was e.g. inside UINT64_C
415 # macro, but then again, h2ph is an approximation.
417 $new .= lc("0x$hex");
420 s/^(-?\d+\.\d+E[-+]?\d+)[FL]?//i && do {$new .= $1; next;};
421 s/^(\d+)\s*[LU]*//i && do {$new .= $1; next;};
422 s/^("(\\"|[^"])*")// && do {$new .= $1; next;};
423 s/^'((\\"|[^"])*)'// && do {
425 $new .= "ord('\$$1')";
431 # replace "sizeof(foo)" with "{foo}"
432 # also, remove * (C dereference operator) to avoid perl syntax
433 # problems. Where the %sizeof array comes from is anyone's
434 # guess (c2ph?), but this at least avoids fatal syntax errors.
435 # Behavior is undefined if sizeof() delimiters are unbalanced.
436 # This code was modified to able to handle constructs like this:
437 # sizeof(*(p)), which appear in the HP-UX 10.01 header files.
438 s/^sizeof\s*\(// && do {
440 my $lvl = 1; # already saw one open paren
441 # tack { on the front, and skip it in the loop
444 # find balanced closing paren
445 while ($index <= length($_) && $lvl > 0) {
446 $lvl++ if substr($_, $index, 1) eq "(";
447 $lvl-- if substr($_, $index, 1) eq ")";
450 # tack } on the end, replacing )
451 substr($_, $index - 1, 1) = "}";
452 # remove pesky * operators within the sizeof argument
453 substr($_, 0, $index - 1) =~ s/\*//g;
457 /\(([\w\s]+)[\*\s]*\)\s*[\w\(]/ && do {
459 foreach (split /\s+/, $1) { # Make sure all the words are types,
460 unless($isatype{$_} or $_ eq 'struct' or $_ eq 'union'){
466 s/\([\w\s]+[\*\s]*\)// && next; # then eliminate them.
469 # struct/union member, including arrays:
470 s/^([_A-Z]\w*(\[[^\]]+\])?((\.|->)[_A-Z]\w*(\[[^\]]+\])?)+)//i && do {
472 $id =~ s/(\.|(->))([^\.\-]*)/->\{$3\}/g;
473 $id =~ s/\b([^\$])($joined_args)/$1\$$2/g if length($joined_args);
474 while($id =~ /\[\s*([^\$\&\d\]]+)\]/) {
477 if(exists($curargs{$index})) {
482 $id =~ s/\[\s*([^\$\&\d\]]+)\]/[$index]/;
486 s/^([_a-zA-Z]\w*)// && do {
488 if ($id eq 'struct' || $id eq 'union') {
492 } elsif ($id =~ /^((un)?signed)|(long)|(short)$/) {
493 while (s/^\s+(\w+)//) { $id .= ' ' . $1; }
498 $new .= '->' if /^[\[\{]/;
499 } elsif ($id eq 'defined') {
502 s/^\s*\((\w),/("$1",/ if $id =~ /^_IO[WR]*$/i; # cheat
504 } elsif ($isatype{$id}) {
505 if ($new =~ /{\s*$/) {
507 } elsif ($new =~ /\(\s*$/ && /^[\s*]*\)/) {
511 $new .= q(').$id.q(');
514 if ($inif && $new !~ /defined\s*\($/) {
515 $new .= '(defined(&' . $id . ') ? &' . $id . ' : 0)';
524 s/^(.)// && do { if ($1 ne '#') { $new .= $1; } next;};
533 my $pre_sub_tri_graphs = 1;
535 READ: while (not eof IN) {
538 next unless length $in;
541 if ($pre_sub_tri_graphs) {
542 # Preprocess all tri-graphs
543 # including things stuck in quoted string constants.
544 $in =~ s/\?\?=/#/g; # | ??=| #|
545 $in =~ s/\?\?\!/|/g; # | ??!| ||
546 $in =~ s/\?\?'/^/g; # | ??'| ^|
547 $in =~ s/\?\?\(/[/g; # | ??(| [|
548 $in =~ s/\?\?\)/]/g; # | ??)| ]|
549 $in =~ s/\?\?\-/~/g; # | ??-| ~|
550 $in =~ s/\?\?\//\\/g; # | ??/| \|
551 $in =~ s/\?\?</{/g; # | ??<| {|
552 $in =~ s/\?\?>/}/g; # | ??>| }|
554 if ($in =~ /^\#ifdef __LANGUAGE_PASCAL__/) {
555 # Tru64 disassembler.h evilness: mixed C and Pascal.
561 if ($in =~ /^extern inline / && # Inlined assembler.
562 $^O eq 'linux' && $file =~ m!(?:^|/)asm/[^/]+\.h$!) {
568 if ($in =~ s/\\$//) { # \-newline
571 } elsif ($in =~ s/^([^"'\\\/]+)//) { # Passthrough
573 } elsif ($in =~ s/^(\\.)//) { # \...
575 } elsif ($in =~ /^'/) { # '...
576 if ($in =~ s/^('(\\.|[^'\\])*')//) {
581 } elsif ($in =~ /^"/) { # "...
582 if ($in =~ s/^("(\\.|[^"\\])*")//) {
587 } elsif ($in =~ s/^\/\/.*//) { # //...
589 } elsif ($in =~ m/^\/\*/) { # /*...
590 # C comment removal adapted from perlfaq6:
591 if ($in =~ s/^\/\*[^*]*\*+([^\/*][^*]*\*+)*\///) {
593 } else { # Incomplete /* */
596 } elsif ($in =~ s/^(\/)//) { # /...
598 } elsif ($in =~ s/^([^\'\"\\\/]+)//) {
600 } elsif ($^O eq 'linux' &&
601 $file =~ m!(?:^|/)linux/byteorder/pdp_endian\.h$! &&
602 $in =~ s!\'T KNOW!!) {
603 $out =~ s!I DON$!I_DO_NOT_KNOW!;
606 warn "Cannot parse $file:\n$in\n";
607 $bad_file{$file} = 1;
612 die "Cannot parse:\n$in\n";
617 last READ if $out =~ /\S/;
624 # Handle recursive subdirectories without getting a grotesquely big stack.
625 # Could this be implemented using File::Find?
633 if ($file eq '-' or -f $file or -l $file) {
639 print STDERR "Skipping directory `$file'\n";
644 print STDERR "Skipping `$file': not a file or directory\n";
652 # Put all the files in $directory into @ARGV for processing.
655 my ($directory) = @_;
657 $directory =~ s:/$::;
659 opendir DIR, $directory;
660 foreach (readdir DIR) {
661 next if ($_ eq '.' or $_ eq '..');
663 # expand_glob() is going to be called until $ARGV[0] isn't a
664 # directory; so push directories, and unshift everything else.
665 if (-d "$directory/$_") { push @ARGV, "$directory/$_" }
666 else { unshift @ARGV, "$directory/$_" }
672 # Given $file, a symbolic link to a directory in the C include directory,
673 # make an equivalent symbolic link in $Dest_dir, if we can figure out how.
674 # Otherwise, just duplicate the file or directory.
678 my $target = eval 'readlink($dirlink)';
680 if ($target =~ m:^\.\./: or $target =~ m:^/:) {
681 # The target of a parent or absolute link could leave the $Dest_dir
682 # hierarchy, so let's put all of the contents of $dirlink (actually,
683 # the contents of $target) into @ARGV; as a side effect down the
684 # line, $dirlink will get created as an _actual_ directory.
685 expand_glob($dirlink);
687 if (-l "$Dest_dir/$dirlink") {
688 unlink "$Dest_dir/$dirlink" or
689 print STDERR "Could not remove link $Dest_dir/$dirlink: $!\n";
692 if (eval 'symlink($target, "$Dest_dir/$dirlink")') {
693 print "Linking $target -> $Dest_dir/$dirlink\n";
695 # Make sure that the link _links_ to something:
696 if (! -e "$Dest_dir/$target") {
697 mkpath("$Dest_dir/$target", 0755) or
698 print STDERR "Could not create $Dest_dir/$target/\n";
701 print STDERR "Could not symlink $target -> $Dest_dir/$dirlink: $!\n";
707 # Push all #included files in $file onto our stack, except for STDIN
708 # and files we've already processed.
709 sub queue_includes_from
714 return if ($file eq "-");
716 open HEADER, $file or return;
717 while (defined($line = <HEADER>)) {
718 while (/\\$/) { # Handle continuation lines
723 if ($line =~ /^#\s*include\s+<(.*?)>/) {
724 push(@ARGV, $1) unless $Is_converted{$1};
731 # Determine include directories; $Config{usrinc} should be enough for (all
732 # non-GCC?) C compilers, but gcc uses an additional include directory.
735 my $from_gcc = `$Config{cc} -v 2>&1`;
736 $from_gcc =~ s:^Reading specs from (.*?)/specs\b.*:$1/include:s;
738 length($from_gcc) ? ($from_gcc, $Config{usrinc}) : ($Config{usrinc});
742 # Create "_h2ph_pre.ph", if it doesn't exist or was built by a different
744 sub build_preamble_if_necessary
746 # Increment $VERSION every time this function is modified:
748 my $preamble = "$Dest_dir/_h2ph_pre.ph";
750 # Can we skip building the preamble file?
752 # Extract version number from first line of preamble:
753 open PREAMBLE, $preamble or die "Cannot open $preamble: $!";
754 my $line = <PREAMBLE>;
755 $line =~ /(\b\d+\b)/;
756 close PREAMBLE or die "Cannot close $preamble: $!";
758 # Don't build preamble if a compatible preamble exists:
759 return if $1 == $VERSION;
762 my (%define) = _extract_cc_defines();
764 open PREAMBLE, ">$preamble" or die "Cannot open $preamble: $!";
765 print PREAMBLE "# This file was created by h2ph version $VERSION\n";
767 foreach (sort keys %define) {
769 print PREAMBLE "# $_=$define{$_}\n";
772 if ($define{$_} =~ /^(\d+)U?L{0,2}$/i) {
774 "unless (defined &$_) { sub $_() { $1 } }\n\n";
775 } elsif ($define{$_} =~ /^\w+$/) {
777 "unless (defined &$_) { sub $_() { &$define{$_} } }\n\n";
780 "unless (defined &$_) { sub $_() { \"",
781 quotemeta($define{$_}), "\" } }\n\n";
784 close PREAMBLE or die "Cannot close $preamble: $!";
788 # %Config contains information on macros that are pre-defined by the
789 # system's compiler. We need this information to make the .ph files
790 # function with perl as the .h files do with cc.
791 sub _extract_cc_defines
794 my $allsymbols = join " ",
795 @Config{'ccsymbols', 'cppsymbols', 'cppccsymbols'};
797 # Split compiler pre-definitions into `key=value' pairs:
798 foreach (split /\s+/, $allsymbols) {
799 /(.+?)=(.+)/ and $define{$1} = $2;
802 print STDERR "$_: $1 -> $2\n";
812 ##############################################################################
817 h2ph - convert .h C header files to .ph Perl header files
821 B<h2ph [-d destination directory] [-r | -a] [-l] [headerfiles]>
826 converts any C header files specified to the corresponding Perl header file
828 It is most easily run while in /usr/include:
830 cd /usr/include; h2ph * sys/*
834 cd /usr/include; h2ph * sys/* arpa/* netinet/*
838 cd /usr/include; h2ph -r -l .
840 The output files are placed in the hierarchy rooted at Perl's
841 architecture dependent library directory. You can specify a different
842 hierarchy with a B<-d> switch.
844 If run with no arguments, filters standard input to standard output.
850 =item -d destination_dir
852 Put the resulting B<.ph> files beneath B<destination_dir>, instead of
853 beneath the default Perl library location (C<$Config{'installsitsearch'}>).
857 Run recursively; if any of B<headerfiles> are directories, then run I<h2ph>
858 on all files in those directories (and their subdirectories, etc.). B<-r>
859 and B<-a> are mutually exclusive.
863 Run automagically; convert B<headerfiles>, as well as any B<.h> files
864 which they include. This option will search for B<.h> files in all
865 directories which your C compiler ordinarily uses. B<-a> and B<-r> are
870 Symbolic links will be replicated in the destination directory. If B<-l>
871 is not specified, then links are skipped over.
875 Put ``hints'' in the .ph files which will help in locating problems with
876 I<h2ph>. In those cases when you B<require> a B<.ph> file containing syntax
877 errors, instead of the cryptic
879 [ some error condition ] at (eval mmm) line nnn
881 you will see the slightly more helpful
883 [ some error condition ] at filename.ph line nnn
885 However, the B<.ph> files almost double in size when built using B<-h>.
889 Include the code from the B<.h> file as a comment in the B<.ph> file.
890 This is primarily used for debugging I<h2ph>.
894 ``Quiet'' mode; don't print out the names of the files being converted.
900 No environment variables are used.
919 The usual warnings if it can't read or write the files involved.
923 Doesn't construct the %sizeof array for you.
925 It doesn't handle all C constructs, but it does attempt to isolate
926 definitions inside evals so that you can get at the definitions
927 that it can translate.
929 It's only intended as a rough tool.
930 You may need to dicker with the files produced.
932 You have to run this program by hand; it's not run as part of the Perl
935 Doesn't handle complicated expressions built piecemeal, a la:
945 Doesn't necessarily locate all of your C compiler's internally-defined
952 close OUT or die "Can't close $file: $!";
953 chmod 0755, $file or die "Can't reset permissions for $file: $!\n";
954 exec("$Config{'eunicefix'} $file") if $Config{'eunicefix'} ne ':';