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.
562 if ($in =~ /^extern inline / && # Inlined assembler.
563 $^O eq 'linux' && $file =~ m!(?:^|/)asm/[^/]+\.h$!) {
570 if ($in =~ s/\\$//) { # \-newline
573 } elsif ($in =~ s/^([^"'\\\/]+)//) { # Passthrough
575 } elsif ($in =~ s/^(\\.)//) { # \...
577 } elsif ($in =~ /^'/) { # '...
578 if ($in =~ s/^('(\\.|[^'\\])*')//) {
583 } elsif ($in =~ /^"/) { # "...
584 if ($in =~ s/^("(\\.|[^"\\])*")//) {
589 } elsif ($in =~ s/^\/\/.*//) { # //...
591 } elsif ($in =~ m/^\/\*/) { # /*...
592 # C comment removal adapted from perlfaq6:
593 if ($in =~ s/^\/\*[^*]*\*+([^\/*][^*]*\*+)*\///) {
595 } else { # Incomplete /* */
598 } elsif ($in =~ s/^(\/)//) { # /...
600 } elsif ($in =~ s/^([^\'\"\\\/]+)//) {
602 } elsif ($^O eq 'linux' &&
603 $file =~ m!(?:^|/)linux/byteorder/pdp_endian\.h$! &&
604 $in =~ s!\'T KNOW!!) {
605 $out =~ s!I DON$!I_DO_NOT_KNOW!;
608 warn "Cannot parse $file:\n$in\n";
609 $bad_file{$file} = 1;
614 die "Cannot parse:\n$in\n";
619 last READ if $out =~ /\S/;
626 # Handle recursive subdirectories without getting a grotesquely big stack.
627 # Could this be implemented using File::Find?
635 if ($file eq '-' or -f $file or -l $file) {
641 print STDERR "Skipping directory `$file'\n";
646 print STDERR "Skipping `$file': not a file or directory\n";
654 # Put all the files in $directory into @ARGV for processing.
657 my ($directory) = @_;
659 $directory =~ s:/$::;
661 opendir DIR, $directory;
662 foreach (readdir DIR) {
663 next if ($_ eq '.' or $_ eq '..');
665 # expand_glob() is going to be called until $ARGV[0] isn't a
666 # directory; so push directories, and unshift everything else.
667 if (-d "$directory/$_") { push @ARGV, "$directory/$_" }
668 else { unshift @ARGV, "$directory/$_" }
674 # Given $file, a symbolic link to a directory in the C include directory,
675 # make an equivalent symbolic link in $Dest_dir, if we can figure out how.
676 # Otherwise, just duplicate the file or directory.
680 my $target = eval 'readlink($dirlink)';
682 if ($target =~ m:^\.\./: or $target =~ m:^/:) {
683 # The target of a parent or absolute link could leave the $Dest_dir
684 # hierarchy, so let's put all of the contents of $dirlink (actually,
685 # the contents of $target) into @ARGV; as a side effect down the
686 # line, $dirlink will get created as an _actual_ directory.
687 expand_glob($dirlink);
689 if (-l "$Dest_dir/$dirlink") {
690 unlink "$Dest_dir/$dirlink" or
691 print STDERR "Could not remove link $Dest_dir/$dirlink: $!\n";
694 if (eval 'symlink($target, "$Dest_dir/$dirlink")') {
695 print "Linking $target -> $Dest_dir/$dirlink\n";
697 # Make sure that the link _links_ to something:
698 if (! -e "$Dest_dir/$target") {
699 mkpath("$Dest_dir/$target", 0755) or
700 print STDERR "Could not create $Dest_dir/$target/\n";
703 print STDERR "Could not symlink $target -> $Dest_dir/$dirlink: $!\n";
709 # Push all #included files in $file onto our stack, except for STDIN
710 # and files we've already processed.
711 sub queue_includes_from
716 return if ($file eq "-");
718 open HEADER, $file or return;
719 while (defined($line = <HEADER>)) {
720 while (/\\$/) { # Handle continuation lines
725 if ($line =~ /^#\s*include\s+<(.*?)>/) {
726 push(@ARGV, $1) unless $Is_converted{$1};
733 # Determine include directories; $Config{usrinc} should be enough for (all
734 # non-GCC?) C compilers, but gcc uses an additional include directory.
737 my $from_gcc = `$Config{cc} -v 2>&1`;
738 $from_gcc =~ s:^Reading specs from (.*?)/specs\b.*:$1/include:s;
740 length($from_gcc) ? ($from_gcc, $Config{usrinc}) : ($Config{usrinc});
744 # Create "_h2ph_pre.ph", if it doesn't exist or was built by a different
746 sub build_preamble_if_necessary
748 # Increment $VERSION every time this function is modified:
750 my $preamble = "$Dest_dir/_h2ph_pre.ph";
752 # Can we skip building the preamble file?
754 # Extract version number from first line of preamble:
755 open PREAMBLE, $preamble or die "Cannot open $preamble: $!";
756 my $line = <PREAMBLE>;
757 $line =~ /(\b\d+\b)/;
758 close PREAMBLE or die "Cannot close $preamble: $!";
760 # Don't build preamble if a compatible preamble exists:
761 return if $1 == $VERSION;
764 my (%define) = _extract_cc_defines();
766 open PREAMBLE, ">$preamble" or die "Cannot open $preamble: $!";
767 print PREAMBLE "# This file was created by h2ph version $VERSION\n";
769 foreach (sort keys %define) {
771 print PREAMBLE "# $_=$define{$_}\n";
774 if ($define{$_} =~ /^(\d+)U?L{0,2}$/i) {
776 "unless (defined &$_) { sub $_() { $1 } }\n\n";
777 } elsif ($define{$_} =~ /^\w+$/) {
779 "unless (defined &$_) { sub $_() { &$define{$_} } }\n\n";
782 "unless (defined &$_) { sub $_() { \"",
783 quotemeta($define{$_}), "\" } }\n\n";
786 close PREAMBLE or die "Cannot close $preamble: $!";
790 # %Config contains information on macros that are pre-defined by the
791 # system's compiler. We need this information to make the .ph files
792 # function with perl as the .h files do with cc.
793 sub _extract_cc_defines
796 my $allsymbols = join " ",
797 @Config{'ccsymbols', 'cppsymbols', 'cppccsymbols'};
799 # Split compiler pre-definitions into `key=value' pairs:
800 foreach (split /\s+/, $allsymbols) {
801 /(.+?)=(.+)/ and $define{$1} = $2;
804 print STDERR "$_: $1 -> $2\n";
814 ##############################################################################
819 h2ph - convert .h C header files to .ph Perl header files
823 B<h2ph [-d destination directory] [-r | -a] [-l] [headerfiles]>
828 converts any C header files specified to the corresponding Perl header file
830 It is most easily run while in /usr/include:
832 cd /usr/include; h2ph * sys/*
836 cd /usr/include; h2ph * sys/* arpa/* netinet/*
840 cd /usr/include; h2ph -r -l .
842 The output files are placed in the hierarchy rooted at Perl's
843 architecture dependent library directory. You can specify a different
844 hierarchy with a B<-d> switch.
846 If run with no arguments, filters standard input to standard output.
852 =item -d destination_dir
854 Put the resulting B<.ph> files beneath B<destination_dir>, instead of
855 beneath the default Perl library location (C<$Config{'installsitsearch'}>).
859 Run recursively; if any of B<headerfiles> are directories, then run I<h2ph>
860 on all files in those directories (and their subdirectories, etc.). B<-r>
861 and B<-a> are mutually exclusive.
865 Run automagically; convert B<headerfiles>, as well as any B<.h> files
866 which they include. This option will search for B<.h> files in all
867 directories which your C compiler ordinarily uses. B<-a> and B<-r> are
872 Symbolic links will be replicated in the destination directory. If B<-l>
873 is not specified, then links are skipped over.
877 Put ``hints'' in the .ph files which will help in locating problems with
878 I<h2ph>. In those cases when you B<require> a B<.ph> file containing syntax
879 errors, instead of the cryptic
881 [ some error condition ] at (eval mmm) line nnn
883 you will see the slightly more helpful
885 [ some error condition ] at filename.ph line nnn
887 However, the B<.ph> files almost double in size when built using B<-h>.
891 Include the code from the B<.h> file as a comment in the B<.ph> file.
892 This is primarily used for debugging I<h2ph>.
896 ``Quiet'' mode; don't print out the names of the files being converted.
902 No environment variables are used.
921 The usual warnings if it can't read or write the files involved.
925 Doesn't construct the %sizeof array for you.
927 It doesn't handle all C constructs, but it does attempt to isolate
928 definitions inside evals so that you can get at the definitions
929 that it can translate.
931 It's only intended as a rough tool.
932 You may need to dicker with the files produced.
934 You have to run this program by hand; it's not run as part of the Perl
937 Doesn't handle complicated expressions built piecemeal, a la:
947 Doesn't necessarily locate all of your C compiler's internally-defined
954 close OUT or die "Can't close $file: $!";
955 chmod 0755, $file or die "Can't reset permissions for $file: $!\n";
956 exec("$Config{'eunicefix'} $file") if $Config{'eunicefix'} ne ':';