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 $next =~ s/^\s*#\s*define\s+(\w+)\s+\1\s*$//;
280 print OUT "# $next\n" if $opt_D;
282 s/#\s*if.*?#\s*endif//g; # drop #ifdefs
285 next unless /^\s?(typedef\s?)?enum\s?([a-zA-Z_]\w*)?\s?\{(.*)\}\s?([a-zA-Z_]\w*)?\s?;/;
286 (my $enum_subs = $3) =~ s/\s//g;
287 my @enum_subs = split(/,/, $enum_subs);
289 foreach my $enum (@enum_subs) {
290 my ($enum_name, $enum_value) = $enum =~ /^([a-zA-Z_]\w*)(=.+)?$/;
291 $enum_value =~ s/^=//;
292 $enum_val = (length($enum_value) ? $enum_value : $enum_val + 1);
295 "eval(\"\\n#line $eval_index $outfile\\n",
296 "sub $enum_name () \{ $enum_val; \}\") ",
297 "unless defined(\&$enum_name);\n");
301 "eval(\"sub $enum_name () \{ $enum_val; \}\") ",
302 "unless defined(\&$enum_name);\n");
305 } elsif (/^(?:__extension__\s+)?(?:extern|static)\s+(?:__)?inline(?:__)?\s+/
306 and !/;\s*$/ and !/{\s*}\s*$/)
308 # This is a hack to parse the inline functions in the glibc headers.
309 # Warning: massive kludge ahead. We suppose inline functions
310 # are mainly constructed like macros.
312 last unless defined ($next = next_line($file));
314 undef $_, last if $next =~ /__THROW\s*;/
315 or $next =~ /^(__extension__|extern|static)\b/;
317 print OUT "# $next\n" if $opt_D;
318 last if $next =~ /^}|^{.*}\s*$/;
320 next if not defined; # because it's only a prototype
321 s/\b(__extension__|extern|static|(?:__)?inline(?:__)?)\b//g;
322 # violently drop #ifdefs
323 s/#\s*if.*?#\s*endif//g
324 and print OUT "# some #ifdef were dropped here -- fill in the blanks\n";
325 if (s/^(?:\w|\s|\*)*\s(\w+)\s*//) {
328 warn "name not found"; next; # shouldn't occur...
331 if (s/^\(([^()]*)\)\s*(\w+\s*)*//) {
332 for my $arg (split /,/, $1) {
333 if ($arg =~ /(\w+)\s*$/) {
341 ? "my(" . (join ',', map "\$$_", @args) . ") = \@_;\n$t "
344 my $proto = @args ? '' : '() ';
346 s/\breturn\b//g; # "return" doesn't occur in macros usually...
348 # try to find and perlify local C variables
349 our @local_variables = (); # needs to be a our(): (?{...}) bug workaround
352 my $typelist = join '|', keys %isatype;
354 (?:(?:un)?signed\s+)?
358 (?{ push @local_variables, $1 })
362 (?:(?:un)?signed\s+)?
366 (?{ push @local_variables, $1 })
370 $new =~ s/&$_\b/\$$_/g for @local_variables;
371 $new =~ s/(["\\])/\\$1/g; #"]);
372 # now that's almost like a macro (we hope)
376 $Is_converted{$file} = 1;
377 if ($opt_e && exists($bad_file{$file})) {
378 unlink($Dest_dir . '/' . $outfile);
382 queue_includes_from($file) if $opt_a;
386 if ($opt_e && (scalar(keys %bad_file) > 0)) {
387 warn "Was unable to convert the following files:\n";
388 warn "\t" . join("\n\t",sort(keys %bad_file)) . "\n";
394 $new = '"(assembly code)"' and return if /\b__asm__\b/; # freak out.
397 $joined_args = join('|', keys(%curargs));
400 s/^\&\&// && do { $new .= " &&"; next;}; # handle && operator
401 s/^\&([\(a-z\)]+)/$1/i; # hack for things that take the address of
402 s/^(\s+)// && do {$new .= ' '; next;};
403 s/^0X([0-9A-F]+)[UL]*//i
406 if (length $hex > 8 && !$Config{use64bitint}) {
407 # Croak if nv_preserves_uv_bits < 64 ?
408 $new .= hex(substr($hex, -8)) +
409 2**32 * hex(substr($hex, 0, -8));
410 # The above will produce "errorneus" code
411 # if the hex constant was e.g. inside UINT64_C
412 # macro, but then again, h2ph is an approximation.
414 $new .= lc("0x$hex");
417 s/^(-?\d+\.\d+E[-+]?\d+)[FL]?//i && do {$new .= $1; next;};
418 s/^(\d+)\s*[LU]*//i && do {$new .= $1; next;};
419 s/^("(\\"|[^"])*")// && do {$new .= $1; next;};
420 s/^'((\\"|[^"])*)'// && do {
422 $new .= "ord('\$$1')";
428 # replace "sizeof(foo)" with "{foo}"
429 # also, remove * (C dereference operator) to avoid perl syntax
430 # problems. Where the %sizeof array comes from is anyone's
431 # guess (c2ph?), but this at least avoids fatal syntax errors.
432 # Behavior is undefined if sizeof() delimiters are unbalanced.
433 # This code was modified to able to handle constructs like this:
434 # sizeof(*(p)), which appear in the HP-UX 10.01 header files.
435 s/^sizeof\s*\(// && do {
437 my $lvl = 1; # already saw one open paren
438 # tack { on the front, and skip it in the loop
441 # find balanced closing paren
442 while ($index <= length($_) && $lvl > 0) {
443 $lvl++ if substr($_, $index, 1) eq "(";
444 $lvl-- if substr($_, $index, 1) eq ")";
447 # tack } on the end, replacing )
448 substr($_, $index - 1, 1) = "}";
449 # remove pesky * operators within the sizeof argument
450 substr($_, 0, $index - 1) =~ s/\*//g;
454 /\(([\w\s]+)[\*\s]*\)\s*[\w\(]/ && do {
456 foreach (split /\s+/, $1) { # Make sure all the words are types,
457 unless($isatype{$_} or $_ eq 'struct' or $_ eq 'union'){
463 s/\([\w\s]+[\*\s]*\)// && next; # then eliminate them.
466 # struct/union member, including arrays:
467 s/^([_A-Z]\w*(\[[^\]]+\])?((\.|->)[_A-Z]\w*(\[[^\]]+\])?)+)//i && do {
469 $id =~ s/(\.|(->))([^\.\-]*)/->\{$3\}/g;
470 $id =~ s/\b([^\$])($joined_args)/$1\$$2/g if length($joined_args);
471 while($id =~ /\[\s*([^\$\&\d\]]+)\]/) {
474 if(exists($curargs{$index})) {
479 $id =~ s/\[\s*([^\$\&\d\]]+)\]/[$index]/;
483 s/^([_a-zA-Z]\w*)// && do {
485 if ($id eq 'struct' || $id eq 'union') {
489 } elsif ($id =~ /^((un)?signed)|(long)|(short)$/) {
490 while (s/^\s+(\w+)//) { $id .= ' ' . $1; }
495 $new .= '->' if /^[\[\{]/;
496 } elsif ($id eq 'defined') {
499 s/^\s*\((\w),/("$1",/ if $id =~ /^_IO[WR]*$/i; # cheat
501 } elsif ($isatype{$id}) {
502 if ($new =~ /{\s*$/) {
504 } elsif ($new =~ /\(\s*$/ && /^[\s*]*\)/) {
508 $new .= q(').$id.q(');
511 if ($inif && $new !~ /defined\s*\($/) {
512 $new .= '(defined(&' . $id . ') ? &' . $id . ' : 0)';
521 s/^(.)// && do { if ($1 ne '#') { $new .= $1; } next;};
530 my $pre_sub_tri_graphs = 1;
532 READ: while (not eof IN) {
535 next unless length $in;
538 if ($pre_sub_tri_graphs) {
539 # Preprocess all tri-graphs
540 # including things stuck in quoted string constants.
541 $in =~ s/\?\?=/#/g; # | ??=| #|
542 $in =~ s/\?\?\!/|/g; # | ??!| ||
543 $in =~ s/\?\?'/^/g; # | ??'| ^|
544 $in =~ s/\?\?\(/[/g; # | ??(| [|
545 $in =~ s/\?\?\)/]/g; # | ??)| ]|
546 $in =~ s/\?\?\-/~/g; # | ??-| ~|
547 $in =~ s/\?\?\//\\/g; # | ??/| \|
548 $in =~ s/\?\?</{/g; # | ??<| {|
549 $in =~ s/\?\?>/}/g; # | ??>| }|
551 if ($in =~ /^\#ifdef __LANGUAGE_PASCAL__/) {
552 # Tru64 disassembler.h evilness: mixed C and Pascal.
558 if ($in =~ /^extern inline / && # Inlined assembler.
559 $^O eq 'linux' && $file =~ m!(?:^|/)asm/[^/]+\.h$!) {
565 if ($in =~ s/\\$//) { # \-newline
568 } elsif ($in =~ s/^([^"'\\\/]+)//) { # Passthrough
570 } elsif ($in =~ s/^(\\.)//) { # \...
572 } elsif ($in =~ /^'/) { # '...
573 if ($in =~ s/^('(\\.|[^'\\])*')//) {
578 } elsif ($in =~ /^"/) { # "...
579 if ($in =~ s/^("(\\.|[^"\\])*")//) {
584 } elsif ($in =~ s/^\/\/.*//) { # //...
586 } elsif ($in =~ m/^\/\*/) { # /*...
587 # C comment removal adapted from perlfaq6:
588 if ($in =~ s/^\/\*[^*]*\*+([^\/*][^*]*\*+)*\///) {
590 } else { # Incomplete /* */
593 } elsif ($in =~ s/^(\/)//) { # /...
595 } elsif ($in =~ s/^([^\'\"\\\/]+)//) {
597 } elsif ($^O eq 'linux' &&
598 $file =~ m!(?:^|/)linux/byteorder/pdp_endian\.h$! &&
599 $in =~ s!\'T KNOW!!) {
600 $out =~ s!I DON$!I_DO_NOT_KNOW!;
603 warn "Cannot parse $file:\n$in\n";
604 $bad_file{$file} = 1;
609 die "Cannot parse:\n$in\n";
614 last READ if $out =~ /\S/;
621 # Handle recursive subdirectories without getting a grotesquely big stack.
622 # Could this be implemented using File::Find?
630 if ($file eq '-' or -f $file or -l $file) {
636 print STDERR "Skipping directory `$file'\n";
641 print STDERR "Skipping `$file': not a file or directory\n";
649 # Put all the files in $directory into @ARGV for processing.
652 my ($directory) = @_;
654 $directory =~ s:/$::;
656 opendir DIR, $directory;
657 foreach (readdir DIR) {
658 next if ($_ eq '.' or $_ eq '..');
660 # expand_glob() is going to be called until $ARGV[0] isn't a
661 # directory; so push directories, and unshift everything else.
662 if (-d "$directory/$_") { push @ARGV, "$directory/$_" }
663 else { unshift @ARGV, "$directory/$_" }
669 # Given $file, a symbolic link to a directory in the C include directory,
670 # make an equivalent symbolic link in $Dest_dir, if we can figure out how.
671 # Otherwise, just duplicate the file or directory.
675 my $target = eval 'readlink($dirlink)';
677 if ($target =~ m:^\.\./: or $target =~ m:^/:) {
678 # The target of a parent or absolute link could leave the $Dest_dir
679 # hierarchy, so let's put all of the contents of $dirlink (actually,
680 # the contents of $target) into @ARGV; as a side effect down the
681 # line, $dirlink will get created as an _actual_ directory.
682 expand_glob($dirlink);
684 if (-l "$Dest_dir/$dirlink") {
685 unlink "$Dest_dir/$dirlink" or
686 print STDERR "Could not remove link $Dest_dir/$dirlink: $!\n";
689 if (eval 'symlink($target, "$Dest_dir/$dirlink")') {
690 print "Linking $target -> $Dest_dir/$dirlink\n";
692 # Make sure that the link _links_ to something:
693 if (! -e "$Dest_dir/$target") {
694 mkpath("$Dest_dir/$target", 0755) or
695 print STDERR "Could not create $Dest_dir/$target/\n";
698 print STDERR "Could not symlink $target -> $Dest_dir/$dirlink: $!\n";
704 # Push all #included files in $file onto our stack, except for STDIN
705 # and files we've already processed.
706 sub queue_includes_from
711 return if ($file eq "-");
713 open HEADER, $file or return;
714 while (defined($line = <HEADER>)) {
715 while (/\\$/) { # Handle continuation lines
720 if ($line =~ /^#\s*include\s+<(.*?)>/) {
721 push(@ARGV, $1) unless $Is_converted{$1};
728 # Determine include directories; $Config{usrinc} should be enough for (all
729 # non-GCC?) C compilers, but gcc uses an additional include directory.
732 my $from_gcc = `$Config{cc} -v 2>&1`;
733 $from_gcc =~ s:^Reading specs from (.*?)/specs\b.*:$1/include:s;
735 length($from_gcc) ? ($from_gcc, $Config{usrinc}) : ($Config{usrinc});
739 # Create "_h2ph_pre.ph", if it doesn't exist or was built by a different
741 sub build_preamble_if_necessary
743 # Increment $VERSION every time this function is modified:
745 my $preamble = "$Dest_dir/_h2ph_pre.ph";
747 # Can we skip building the preamble file?
749 # Extract version number from first line of preamble:
750 open PREAMBLE, $preamble or die "Cannot open $preamble: $!";
751 my $line = <PREAMBLE>;
752 $line =~ /(\b\d+\b)/;
753 close PREAMBLE or die "Cannot close $preamble: $!";
755 # Don't build preamble if a compatible preamble exists:
756 return if $1 == $VERSION;
759 my (%define) = _extract_cc_defines();
761 open PREAMBLE, ">$preamble" or die "Cannot open $preamble: $!";
762 print PREAMBLE "# This file was created by h2ph version $VERSION\n";
764 foreach (sort keys %define) {
766 print PREAMBLE "# $_=$define{$_}\n";
769 if ($define{$_} =~ /^(\d+)U?L{0,2}$/i) {
771 "unless (defined &$_) { sub $_() { $1 } }\n\n";
772 } elsif ($define{$_} =~ /^\w+$/) {
774 "unless (defined &$_) { sub $_() { &$define{$_} } }\n\n";
777 "unless (defined &$_) { sub $_() { \"",
778 quotemeta($define{$_}), "\" } }\n\n";
781 close PREAMBLE or die "Cannot close $preamble: $!";
785 # %Config contains information on macros that are pre-defined by the
786 # system's compiler. We need this information to make the .ph files
787 # function with perl as the .h files do with cc.
788 sub _extract_cc_defines
791 my $allsymbols = join " ",
792 @Config{'ccsymbols', 'cppsymbols', 'cppccsymbols'};
794 # Split compiler pre-definitions into `key=value' pairs:
795 foreach (split /\s+/, $allsymbols) {
796 /(.+?)=(.+)/ and $define{$1} = $2;
799 print STDERR "$_: $1 -> $2\n";
809 ##############################################################################
814 h2ph - convert .h C header files to .ph Perl header files
818 B<h2ph [-d destination directory] [-r | -a] [-l] [headerfiles]>
823 converts any C header files specified to the corresponding Perl header file
825 It is most easily run while in /usr/include:
827 cd /usr/include; h2ph * sys/*
831 cd /usr/include; h2ph * sys/* arpa/* netinet/*
835 cd /usr/include; h2ph -r -l .
837 The output files are placed in the hierarchy rooted at Perl's
838 architecture dependent library directory. You can specify a different
839 hierarchy with a B<-d> switch.
841 If run with no arguments, filters standard input to standard output.
847 =item -d destination_dir
849 Put the resulting B<.ph> files beneath B<destination_dir>, instead of
850 beneath the default Perl library location (C<$Config{'installsitsearch'}>).
854 Run recursively; if any of B<headerfiles> are directories, then run I<h2ph>
855 on all files in those directories (and their subdirectories, etc.). B<-r>
856 and B<-a> are mutually exclusive.
860 Run automagically; convert B<headerfiles>, as well as any B<.h> files
861 which they include. This option will search for B<.h> files in all
862 directories which your C compiler ordinarily uses. B<-a> and B<-r> are
867 Symbolic links will be replicated in the destination directory. If B<-l>
868 is not specified, then links are skipped over.
872 Put ``hints'' in the .ph files which will help in locating problems with
873 I<h2ph>. In those cases when you B<require> a B<.ph> file containing syntax
874 errors, instead of the cryptic
876 [ some error condition ] at (eval mmm) line nnn
878 you will see the slightly more helpful
880 [ some error condition ] at filename.ph line nnn
882 However, the B<.ph> files almost double in size when built using B<-h>.
886 Include the code from the B<.h> file as a comment in the B<.ph> file.
887 This is primarily used for debugging I<h2ph>.
891 ``Quiet'' mode; don't print out the names of the files being converted.
897 No environment variables are used.
916 The usual warnings if it can't read or write the files involved.
920 Doesn't construct the %sizeof array for you.
922 It doesn't handle all C constructs, but it does attempt to isolate
923 definitions inside evals so that you can get at the definitions
924 that it can translate.
926 It's only intended as a rough tool.
927 You may need to dicker with the files produced.
929 You have to run this program by hand; it's not run as part of the Perl
932 Doesn't handle complicated expressions built piecemeal, a la:
942 Doesn't necessarily locate all of your C compiler's internally-defined
949 close OUT or die "Can't close $file: $!";
950 chmod 0755, $file or die "Can't reset permissions for $file: $!\n";
951 exec("$Config{'eunicefix'} $file") if $Config{'eunicefix'} ne ':';