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bisect-runner.pl must patch Makefile.SH to avoid parallel make problems.
[perl5.git] / Porting / bisect-runner.pl
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1#!/usr/bin/perl -w
2use strict;
3
390a69a9 4use Getopt::Long qw(:config bundling no_auto_abbrev);
77ae6092 5use Pod::Usage;
2526f4b8 6use Config;
6a8dbfd7 7
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8my @targets
9 = qw(config.sh config.h miniperl lib/Config.pm Fcntl perl test_prep);
6a8dbfd7 10
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11my $cpus;
12if (open my $fh, '<', '/proc/cpuinfo') {
13 while (<$fh>) {
14 ++$cpus if /^processor\s+:\s+\d+$/;
15 }
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16} elsif (-x '/sbin/sysctl') {
17 $cpus = 1 + $1 if `/sbin/sysctl hw.ncpu` =~ /^hw\.ncpu: (\d+)$/;
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18} elsif (-x '/usr/bin/getconf') {
19 $cpus = 1 + $1 if `/usr/bin/getconf _NPROCESSORS_ONLN` =~ /^(\d+)$/;
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20}
21
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22my %options =
23 (
e4516dd0 24 jobs => defined $cpus ? $cpus + 1 : 2,
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25 'expect-pass' => 1,
26 clean => 1, # mostly for debugging this
27 );
6a8dbfd7 28
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29my $linux64 = `uname -sm` eq "Linux x86_64\n" ? '64' : '';
30
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31my @paths;
32
33if ($^O eq 'linux') {
34 # This is the search logic for a multi-arch library layout
35 # added to linux.sh in commits 40f026236b9959b7 and dcffd848632af2c7.
36 my $gcc = -x '/usr/bin/gcc' ? '/usr/bin/gcc' : 'gcc';
37
38 foreach (`$gcc -print-search-dirs`) {
39 next unless /^libraries: =(.*)/;
40 foreach (split ':', $1) {
41 next if m/gcc/;
42 next unless -d $_;
43 s!/$!!;
44 push @paths, $_;
45 }
46 }
47}
48
49push @paths, map {$_ . $linux64} qw(/usr/local/lib /lib /usr/lib);
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50
51my %defines =
52 (
53 usedevel => '',
54 optimize => '-g',
55 cc => 'ccache gcc',
56 ld => 'gcc',
fdbac266 57 ($linux64 ? (libpth => \@paths) : ()),
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58 );
59
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60unless(GetOptions(\%options,
61 'target=s', 'jobs|j=i', 'expect-pass=i',
62 'expect-fail' => sub { $options{'expect-pass'} = 0; },
63 'clean!', 'one-liner|e=s', 'match=s', 'force-manifest',
77ae6092 64 'test-build', 'check-args', 'A=s@', 'usage|help|?',
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65 'D=s@' => sub {
66 my (undef, $val) = @_;
67 if ($val =~ /\A([^=]+)=(.*)/s) {
68 $defines{$1} = length $2 ? $2 : "\0";
69 } else {
70 $defines{$val} = '';
71 }
72 },
73 'U=s@' => sub {
74 $defines{$_[1]} = undef;
75 },
6a8dbfd7 76 )) {
77ae6092 77 pod2usage(exitval => 255, verbose => 1);
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78}
79
f4800c99 80my ($target, $j, $match) = @options{qw(target jobs match)};
e295b7be 81
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82pod2usage(exitval => 255, verbose => 1) if $options{usage};
83pod2usage(exitval => 255, verbose => 1)
84 unless @ARGV || $match || $options{'test-build'} || defined $options{'one-liner'};
6a8dbfd7 85
f4800c99 86exit 0 if $options{'check-args'};
6a8dbfd7 87
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88=head1 NAME
89
90bisect.pl - use git bisect to pinpoint changes
91
92=head1 SYNOPSIS
93
94 # When did this become an error?
95 .../Porting/bisect.pl -e 'my $a := 2;'
71d80638 96 # When did this stop being an error?
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97 .../Porting/bisect.pl --expect-fail -e '1 // 2'
98 # When did this stop matching?
99 .../Porting/bisect.pl --match '\b(?:PL_)hash_seed_set\b'
100 # When did this start matching?
101 .../Porting/bisect.pl --expect-fail --match '\buseithreads\b'
102 # When did this test program stop working?
d398528a 103 .../Porting/bisect.pl -- ./perl -Ilib ../test_prog.pl
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104 # When did this first become valid syntax?
105 .../Porting/bisect.pl --target=miniperl --end=v5.10.0 \
106 --expect-fail -e 'my $a := 2;'
107 # What was the last revision to build with these options?
108 .../Porting/bisect.pl --test-build -Dd_dosuid
109
110=head1 DESCRIPTION
111
facd1b88 112Together F<bisect.pl> and F<bisect-runner.pl> attempt to automate the use
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113of C<git bisect> as much as possible. With one command (and no other files)
114it's easy to find out
115
116=over 4
117
118=item *
119
120Which commit caused this example code to break?
121
122=item *
123
124Which commit caused this example code to start working?
125
126=item *
127
128Which commit added the first to match this regex?
129
130=item *
131
132Which commit removed the last to match this regex?
133
134=back
135
136usually without needing to know which versions of perl to use as start and
137end revisions.
138
facd1b88 139By default F<bisect.pl> will process all options, then use the rest of the
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140command line as arguments to list C<system> to run a test case. By default,
141the test case should pass (exit with 0) on earlier perls, and fail (exit
facd1b88 142non-zero) on I<blead>. F<bisect.pl> will use F<bisect-runner.pl> to find the
77ae6092 143earliest stable perl version on which the test case passes, check that it
facd1b88 144fails on blead, and then use F<bisect-runner.pl> with C<git bisect run> to
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145find the commit which caused the failure.
146
147Because the test case is the complete argument to C<system>, it is easy to
148run something other than the F<perl> built, if necessary. If you need to run
149the perl built, you'll probably need to invoke it as C<./perl -Ilib ...>
150
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151You need a clean checkout to run a bisect, and you can't use the checkout
152which contains F<Porting/bisect.pl> (because C<git bisect>) will check out
153a revision before F<Porting/bisect-runner.pl> was added, which
154C<git bisect run> needs). If your working checkout is called F<perl>, the
155simplest solution is to make a local clone, and run from that. I<i.e.>:
156
157 cd ..
158 git clone perl perl2
159 cd perl2
160 ../perl/Porting/bisect.pl ...
161
facd1b88 162By default, F<bisect-runner.pl> will automatically disable the build of
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163L<DB_File> for commits earlier than ccb44e3bf3be2c30, as it's not practical
164to patch DB_File 1.70 and earlier to build with current Berkeley DB headers.
165(ccb44e3bf3be2c30 was in September 1999, between 5.005_62 and 5.005_63.)
166If your F<db.h> is old enough you can override this with C<-Unoextensions>.
167
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168=head1 OPTIONS
169
170=over 4
171
172=item *
173
174--start I<commit-ish>
175
176Earliest revision to test, as a I<commit-ish> (a tag, commit or anything
facd1b88 177else C<git> understands as a revision). If not specified, F<bisect.pl> will
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178search stable perl releases from 5.002 to 5.14.0 until it finds one where
179the test case passes.
180
181=item *
182
183--end I<commit-ish>
184
185Most recent revision to test, as a I<commit-ish>. If not specified, defaults
b4f0ec5f 186to I<blead>.
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187
188=item *
189
190--target I<target>
191
192F<Makefile> target (or equivalent) needed, to run the test case. If specified,
193this should be one of
194
195=over 4
196
197=item *
198
199I<config.sh>
200
facd1b88 201Just run F<./Configure>
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202
203=item *
204
205I<config.h>
206
207Run the various F<*.SH> files to generate F<Makefile>, F<config.h>, I<etc>.
208
209=item *
210
211I<miniperl>
212
213Build F<miniperl>.
214
215=item *
216
217I<lib/Config.pm>
218
219Use F<miniperl> to build F<lib/Config.pm>
220
221=item *
222
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223I<Fcntl>
224
225Build F<lib/auto/Fcntl/Fnctl.so> (strictly, C<.$Config{so}>). As L<Fcntl>
226is simple XS module present since 5.000, this provides a fast test of
b4f0ec5f 227whether XS modules can be built. Note, XS modules are built by F<miniperl>,
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228hence this target will not build F<perl>.
229
230=item *
231
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232I<perl>
233
234Build F<perl>. This also builds pure-Perl modules in F<cpan>, F<dist> and
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235F<ext>. XS modules (such as L<Fcntl>) are not built.
236
237=item *
238
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239I<test_prep>
240
241Build everything needed to run the tests. This is the default if we're
242running test code, but is time consuming, as it means building all
b4f0ec5f 243XS modules. For older F<Makefile>s, the previous name of C<test-prep>
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244is automatically substituted. For very old F<Makefile>s, C<make test> is
245run, as there is no target provided to just get things ready, and for 5.004
246and earlier the tests run very quickly.
247
248=back
249
250=item *
251
252--one-liner 'code to run'
253
254=item *
255
256-e 'code to run'
257
a1756669 258Example code to run, just like you'd use with C<perl -e>.
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259
260This prepends C<./perl -Ilib -e 'code to run'> to the test case given,
facd1b88 261or F<./miniperl> if I<target> is C<miniperl>.
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262
263(Usually you'll use C<-e> instead of providing a test case in the
facd1b88 264non-option arguments to F<bisect.pl>)
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265
266C<-E> intentionally isn't supported, as it's an error in 5.8.0 and earlier,
267which interferes with detecting errors in the example code itself.
268
269=item *
270
271--expect-fail
272
273The test case should fail for the I<start> revision, and pass for the I<end>
274revision. The bisect run will find the first commit where it passes.
275
276=item *
277
af7c500f 278-Dnoextensions=Encode
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279
280=item *
281
282-Uusedevel
283
284=item *
285
286-Accflags=-DNO_MATHOMS
287
288Arguments to pass to F<Configure>. Repeated C<-A> arguments are passed
289through as is. C<-D> and C<-U> are processed in order, and override
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290previous settings for the same parameter. F<bisect-runner.pl> emulates
291C<-Dnoextensions> when F<Configure> itself does not provide it, as it's
292often very useful to be able to disable some XS extensions.
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293
294=item *
295
b4f0ec5f 296--jobs I<jobs>
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297
298=item *
299
b4f0ec5f 300-j I<jobs>
77ae6092 301
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302Number of C<make> jobs to run in parallel. If F</proc/cpuinfo> exists and
303can be parsed, or F</sbin/sysctl> exists and reports C<hw.ncpu>, or
304F</usr/bin/getconf> exists and reports C<_NPROCESSORS_ONLN> defaults to 1 +
305I<number of CPUs>. Otherwise defaults to 2.
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306
307=item *
308
b4f0ec5f 309--match pattern
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310
311Instead of running a test program to determine I<pass> or I<fail>, pass
312if the given regex matches, and hence search for the commit that removes
313the last matching file.
314
315If no I<target> is specified, the match is against all files in the
316repository (which is fast). If a I<target> is specified, that target is
317built, and the match is against only the built files. C<--expect-fail> can
318be used with C<--match> to search for a commit that adds files that match.
319
320=item *
321
322--test-build
323
324Test that the build completes, without running any test case.
325
326By default, if the build for the desired I<target> fails to complete,
327F<bisect-runner.pl> reports a I<skip> back to C<git bisect>, the assumption
328being that one wants to find a commit which changed state "builds && passes"
329to "builds && fails". If instead one is interested in which commit broke the
330build (possibly for particular F<Configure> options), use I<--test-build>
331to treat a build failure as a failure, not a "skip".
332
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333Often this option isn't as useful as it first seems, because I<any> build
334failure will be reported to C<git bisect> as a failure, not just the failure
335that you're interested in. Generally, to debug a particular problem, it's
336more useful to use a I<target> that builds properly at the point of interest,
337and then a test case that runs C<make>. For example:
338
339 .../Porting/bisect.pl --start=perl-5.000 --end=perl-5.002 \
340 --expect-fail --force-manifest --target=miniperl make perl
341
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342will find the first revision capable of building L<DynaLoader> and then
343F<perl>, without becoming confused by revisions where F<miniperl> won't
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344even link.
345
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346=item *
347
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348--force-manifest
349
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350By default, a build will "skip" if any files listed in F<MANIFEST> are not
351present. Usually this is useful, as it avoids false-failures. However, there
352are some long ranges of commits where listed files are missing, which can
353cause a bisect to abort because all that remain are skipped revisions.
354
355In these cases, particularly if the test case uses F<miniperl> and no modules,
356it may be more useful to force the build to continue, even if files
357F<MANIFEST> are missing.
358
359=item *
360
361--expect-pass [0|1]
362
363C<--expect-pass=0> is equivalent to C<--expect-fail>. I<1> is the default.
364
365=item *
366
367--no-clean
368
369Tell F<bisect-runner.pl> not to clean up after the build. This allows one
370to use F<bisect-runner.pl> to build the current particular perl revision for
371interactive testing, or for debugging F<bisect-runner.pl>.
372
373Passing this to F<bisect.pl> will likely cause the bisect to fail badly.
374
375=item *
376
377--check-args
378
379Validate the options and arguments, and exit silently if they are valid.
380
381=item *
382
383--usage
384
385=item *
386
387--help
388
389=item *
390
391-?
392
393Display the usage information and exit.
394
395=back
396
397=cut
398
0afef97d 399die "$0: Can't build $target" if defined $target && !grep {@targets} $target;
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400
401$j = "-j$j" if $j =~ /\A\d+\z/;
402
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403# Sadly, however hard we try, I don't think that it will be possible to build
404# modules in ext/ on x86_64 Linux before commit e1666bf5602ae794 on 1999/12/29,
405# which updated to MakeMaker 3.7, which changed from using a hard coded ld
406# in the Makefile to $(LD). On x86_64 Linux the "linker" is gcc.
407
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408sub extract_from_file {
409 my ($file, $rx, $default) = @_;
410 open my $fh, '<', $file or die "Can't open $file: $!";
411 while (<$fh>) {
412 my @got = $_ =~ $rx;
413 return wantarray ? @got : $got[0]
414 if @got;
415 }
416 return $default if defined $default;
417 return;
418}
419
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420sub edit_file {
421 my ($file, $munger) = @_;
422 local $/;
423 open my $fh, '<', $file or die "Can't open $file: $!";
424 my $orig = <$fh>;
425 die "Can't read $file: $!" unless defined $orig && close $fh;
426 my $new = $munger->($orig);
427 return if $new eq $orig;
428 open $fh, '>', $file or die "Can't open $file: $!";
429 print $fh $new or die "Can't print to $file: $!";
430 close $fh or die "Can't close $file: $!";
431}
432
433sub apply_patch {
434 my $patch = shift;
435
436 my ($file) = $patch =~ qr!^diff.*a/(\S+) b/\1!;
437 open my $fh, '|-', 'patch', '-p1' or die "Can't run patch: $!";
438 print $fh $patch;
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439 return if close $fh;
440 print STDERR "Patch is <<'EOPATCH'\n${patch}EOPATCH\n";
441 die "Can't patch $file: $?, $!";
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442}
443
ab4a15f9 444sub clean {
f4800c99 445 if ($options{clean}) {
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446 # Needed, because files that are build products in this checked out
447 # version might be in git in the next desired version.
9da8cb0a 448 system 'git clean -dxf </dev/null';
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449 # Needed, because at some revisions the build alters checked out files.
450 # (eg pod/perlapi.pod). Also undoes any changes to makedepend.SH
9da8cb0a 451 system 'git reset --hard HEAD </dev/null';
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452 }
453}
454
455sub skip {
456 my $reason = shift;
457 clean();
458 warn "skipping - $reason";
459 exit 125;
460}
461
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462sub report_and_exit {
463 my ($ret, $pass, $fail, $desc) = @_;
464
465 clean();
466
f4800c99 467 my $got = ($options{'expect-pass'} ? !$ret : $ret) ? 'good' : 'bad';
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468 if ($ret) {
469 print "$got - $fail $desc\n";
470 } else {
471 print "$got - $pass $desc\n";
472 }
473
474 exit($got eq 'bad');
475}
476
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477sub match_and_exit {
478 my $target = shift;
479 my $matches = 0;
480 my $re = qr/$match/;
481 my @files;
482
483 {
484 local $/ = "\0";
485 @files = defined $target ? `git ls-files -o -z`: `git ls-files -z`;
486 chomp @files;
487 }
488
489 foreach my $file (@files) {
490 open my $fh, '<', $file or die "Can't open $file: $!";
491 while (<$fh>) {
492 if ($_ =~ $re) {
493 ++$matches;
494 if (tr/\t\r\n -~\200-\377//c) {
495 print "Binary file $file matches\n";
496 } else {
497 $_ .= "\n" unless /\n\z/;
498 print "$file: $_";
499 }
500 }
501 }
502 close $fh or die "Can't close $file: $!";
503 }
504 report_and_exit(!$matches,
505 $matches == 1 ? '1 match for' : "$matches matches for",
506 'no matches for', $match);
507}
508
6a8dbfd7 509# Not going to assume that system perl is yet new enough to have autodie
9da8cb0a 510system 'git clean -dxf </dev/null' and die;
6a8dbfd7 511
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512if (!defined $target) {
513 match_and_exit() if $match;
514 $target = 'test_prep';
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515}
516
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517skip('no Configure - is this the //depot/perlext/Compiler branch?')
518 unless -f 'Configure';
519
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520# This changes to PERL_VERSION in 4d8076ea25903dcb in 1999
521my $major
522 = extract_from_file('patchlevel.h',
523 qr/^#define\s+(?:PERL_VERSION|PATCHLEVEL)\s+(\d+)\s/,
524 0);
525
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526if ($major < 1) {
527 if (extract_from_file('Configure',
528 qr/^ \*=\*\) echo "\$1" >> \$optdef;;$/)) {
529 # This is " Spaces now allowed in -D command line options.",
530 # part of commit ecfc54246c2a6f42
531 apply_patch(<<'EOPATCH');
532diff --git a/Configure b/Configure
533index 3d3b38d..78ffe16 100755
534--- a/Configure
535+++ b/Configure
536@@ -652,7 +777,8 @@ while test $# -gt 0; do
537 echo "$me: use '-U symbol=', not '-D symbol='." >&2
538 echo "$me: ignoring -D $1" >&2
539 ;;
540- *=*) echo "$1" >> $optdef;;
541+ *=*) echo "$1" | \
542+ sed -e "s/'/'\"'\"'/g" -e "s/=\(.*\)/='\1'/" >> $optdef;;
543 *) echo "$1='define'" >> $optdef;;
544 esac
545 shift
546EOPATCH
547 }
548 if (extract_from_file('Configure', qr/^if \$contains 'd_namlen' \$xinc\b/)) {
549 # Configure's original simple "grep" for d_namlen falls foul of the
550 # approach taken by the glibc headers:
551 # #ifdef _DIRENT_HAVE_D_NAMLEN
552 # # define _D_EXACT_NAMLEN(d) ((d)->d_namlen)
553 #
554 # where _DIRENT_HAVE_D_NAMLEN is not defined on Linux.
555 # This is also part of commit ecfc54246c2a6f42
556 apply_patch(<<'EOPATCH');
557diff --git a/Configure b/Configure
558index 3d3b38d..78ffe16 100755
559--- a/Configure
560+++ b/Configure
561@@ -3935,7 +4045,8 @@ $rm -f try.c
562
563 : see if the directory entry stores field length
564 echo " "
565-if $contains 'd_namlen' $xinc >/dev/null 2>&1; then
566+$cppstdin $cppflags $cppminus < "$xinc" > try.c
567+if $contains 'd_namlen' try.c >/dev/null 2>&1; then
568 echo "Good, your directory entry keeps length information in d_namlen." >&4
569 val="$define"
570 else
571EOPATCH
572 }
573}
d90ae42b 574
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575if ($major < 8 && !extract_from_file('Configure',
576 qr/^\t\tif test ! -t 0; then$/)) {
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577 # Before dfe9444ca7881e71, Configure would refuse to run if stdin was not a
578 # tty. With that commit, the tty requirement was dropped for -de and -dE
af7c500f 579 # Commit aaeb8e512e8e9e14 dropped the tty requirement for -S
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580 # For those older versions, it's probably easiest if we simply remove the
581 # sanity test.
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582 edit_file('Configure', sub {
583 my $code = shift;
584 $code =~ s/test ! -t 0/test Perl = rules/;
585 return $code;
586 });
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587}
588
d90ae42b 589if ($major < 10 && extract_from_file('Configure', qr/^set malloc\.h i_malloc$/)) {
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590 # This is commit 01d07975f7ef0e7d, trimmed, with $compile inlined as
591 # prior to bd9b35c97ad661cc Configure had the malloc.h test before the
592 # definition of $compile.
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593 apply_patch(<<'EOPATCH');
594diff --git a/Configure b/Configure
595index 3d2e8b9..6ce7766 100755
596--- a/Configure
597+++ b/Configure
598@@ -6743,5 +6743,22 @@ set d_dosuid
599
600 : see if this is a malloc.h system
601-set malloc.h i_malloc
602-eval $inhdr
603+: we want a real compile instead of Inhdr because some systems have a
604+: malloc.h that just gives a compile error saying to use stdlib.h instead
605+echo " "
606+$cat >try.c <<EOCP
607+#include <stdlib.h>
608+#include <malloc.h>
609+int main () { return 0; }
610+EOCP
611+set try
5541f5e3 612+if $cc $optimize $ccflags $ldflags -o try $* try.c $libs > /dev/null 2>&1; then
d90ae42b
NC
613+ echo "<malloc.h> found." >&4
614+ val="$define"
615+else
616+ echo "<malloc.h> NOT found." >&4
617+ val="$undef"
618+fi
619+$rm -f try.c try
620+set i_malloc
621+eval $setvar
622
623EOPATCH
624}
a1756669 625
686af304
NC
626# Cwd.xs added in commit 0d2079faa739aaa9. Cwd.pm moved to ext/ 8 years later
627# in commit 403f501d5b37ebf0
628if ($major > 0 && <*/Cwd/Cwd.xs>) {
629 if ($major < 10 && !extract_from_file('Makefile.SH', qr/^extra_dep=''$/)) {
630 # The Makefile.PL for Unicode::Normalize needs
631 # lib/unicore/CombiningClass.pl. Even without a parallel build, we need
632 # a dependency to ensure that it builds. This is a variant of commit
633 # 9f3ef600c170f61e. Putting this for earlier versions gives us a spot
634 # on which to hang the edits below
635 apply_patch(<<'EOPATCH');
6ff3edb1
NC
636diff --git a/Makefile.SH b/Makefile.SH
637index f61d0db..6097954 100644
638--- a/Makefile.SH
639+++ b/Makefile.SH
640@@ -155,10 +155,20 @@ esac
641
642 : Prepare dependency lists for Makefile.
643 dynamic_list=' '
644+extra_dep=''
645 for f in $dynamic_ext; do
646 : the dependency named here will never exist
647 base=`echo "$f" | sed 's/.*\///'`
648- dynamic_list="$dynamic_list lib/auto/$f/$base.$dlext"
649+ this_target="lib/auto/$f/$base.$dlext"
650+ dynamic_list="$dynamic_list $this_target"
651+
652+ : Parallel makes reveal that we have some interdependencies
653+ case $f in
654+ Math/BigInt/FastCalc) extra_dep="$extra_dep
655+$this_target: lib/auto/List/Util/Util.$dlext" ;;
656+ Unicode/Normalize) extra_dep="$extra_dep
657+$this_target: lib/unicore/CombiningClass.pl" ;;
658+ esac
659 done
660
661 static_list=' '
662@@ -987,2 +997,9 @@ n_dummy $(nonxs_ext): miniperl$(EXE_EXT) preplibrary $(DYNALOADER) FORCE
663 @$(LDLIBPTH) sh ext/util/make_ext nonxs $@ MAKE=$(MAKE) LIBPERL_A=$(LIBPERL)
664+!NO!SUBS!
665+
666+$spitshell >>Makefile <<EOF
667+$extra_dep
668+EOF
669+
670+$spitshell >>Makefile <<'!NO!SUBS!'
671
672EOPATCH
686af304
NC
673 }
674 if ($major < 14) {
675 # Commits dc0655f797469c47 and d11a62fe01f2ecb2
676 edit_file('Makefile.SH', sub {
677 my $code = shift;
678 foreach my $ext (qw(Encode SDBM_File)) {
679 next if $code =~ /\b$ext\) extra_dep=/s;
680 $code =~ s!(\) extra_dep="\$extra_dep
681\$this_target: .*?" ;;)
682( esac
683)!$1
684 $ext) extra_dep="\$extra_dep
685\$this_target: lib/auto/Cwd/Cwd.\$dlext" ;;
686$2!;
687 }
688 return $code;
689 });
690 }
691}
692if ($major == 7) {
693 # Remove commits 9fec149bb652b6e9 and 5bab1179608f81d8, which add/amend
694 # rules to automatically run regen scripts that rebuild C headers. These
695 # cause problems because a git checkout doesn't preserve relative file
696 # modification times, hence the regen scripts may fire. This will obscure
697 # whether the repository had the correct generated headers checked in.
698 # Also, the dependency rules for running the scripts were not correct,
699 # which could cause spurious re-builds on re-running make, and can cause
700 # complete build failures for a parallel make.
701 if (extract_from_file('Makefile.SH',
702 qr/Writing it this way gives make a big hint to always run opcode\.pl before/)) {
703 system 'git show 70c6e6715e8fec53 | patch -p1'
704 and die;
705 } elsif (extract_from_file('Makefile.SH',
706 qr/^opcode\.h opnames\.h pp_proto\.h pp\.sym: opcode\.pl$/)) {
707 system 'git show 9fec149bb652b6e9 | patch -p1 -R'
708 and die;
709 }
6ff3edb1
NC
710}
711
6a8dbfd7
NC
712# There was a bug in makedepend.SH which was fixed in version 96a8704c.
713# Symptom was './makedepend: 1: Syntax error: Unterminated quoted string'
714# Remove this if you're actually bisecting a problem related to makedepend.SH
9da8cb0a 715system 'git show blead:makedepend.SH > makedepend.SH </dev/null' and die;
6a8dbfd7 716
d64af352
NC
717if ($^O eq 'freebsd') {
718 # There are rather too many version-specific FreeBSD hints fixes to patch
719 # individually. Also, more than once the FreeBSD hints file has been
720 # written in what turned out to be a rather non-future-proof style,
721 # with case statements treating the most recent version as the exception,
722 # instead of treating previous versions' behaviour explicitly and changing
723 # the default to cater for the current behaviour. (As strangely, future
724 # versions inherit the current behaviour.)
9da8cb0a
NC
725 system 'git show blead:hints/freebsd.sh > hints/freebsd.sh </dev/null'
726 and die;
641e2ba6
NC
727
728 if ($major < 2) {
729 # 5.002 Configure and later have code to
730 #
731 # : Try to guess additional flags to pick up local libraries.
732 #
733 # which will automatically add --L/usr/local/lib because libpth
734 # contains /usr/local/lib
735 #
736 # Without it, if Configure finds libraries in /usr/local/lib (eg
737 # libgdbm.so) and adds them to the compiler commandline (as -lgdbm),
738 # then the link will fail. We can't fix this up in config.sh because
739 # the link will *also* fail in the test compiles that Configure does
740 # (eg $inlibc) which makes Configure get all sorts of things
741 # wrong. :-( So bodge it here.
742 #
743 # Possibly other platforms will need something similar. (if they
744 # have "wanted" libraries in /usr/local/lib, but the compiler
745 # doesn't default to putting that directory in its link path)
746 apply_patch(<<'EOPATCH');
747--- perl2/hints/freebsd.sh.orig 2011-10-05 16:44:55.000000000 +0200
748+++ perl2/hints/freebsd.sh 2011-10-05 16:45:52.000000000 +0200
749@@ -125,7 +125,7 @@
750 else
751 libpth="/usr/lib /usr/local/lib"
752 glibpth="/usr/lib /usr/local/lib"
753- ldflags="-Wl,-E "
754+ ldflags="-Wl,-E -L/usr/local/lib "
755 lddlflags="-shared "
756 fi
757 cccdlflags='-DPIC -fPIC'
758@@ -133,7 +133,7 @@
759 *)
760 libpth="/usr/lib /usr/local/lib"
761 glibpth="/usr/lib /usr/local/lib"
762- ldflags="-Wl,-E "
763+ ldflags="-Wl,-E -L/usr/local/lib "
764 lddlflags="-shared "
765 cccdlflags='-DPIC -fPIC'
766 ;;
641e2ba6
NC
767EOPATCH
768 }
915f531b
NC
769} elsif ($^O eq 'darwin') {
770 if ($major < 8) {
771 my $faking_it;
772 # We can't build on darwin without some of the data in the hints file.
773 foreach ('ext/DynaLoader/dl_dyld.xs', 'hints/darwin.sh') {
774 next if -f $_;
775 ++$faking_it;
776 # Probably less surprising to use the earliest version of
777 # hints/darwin.sh and then edit in place just below, than use
778 # blead's version, as that would create a discontinuity at
779 # f556e5b971932902 - before it, hints bugs would be "fixed", after
780 # it they'd resurface. This way, we should give the illusion of
781 # monotonic bug fixing.
782 system "git show f556e5b971932902:$_ >$_"
783 and die "while attempting to extract $_";
784 }
785 if ($faking_it) {
786 apply_patch(<<'EOPATCH');
787diff -u a/ext/DynaLoader/dl_dyld.xs~ a/ext/DynaLoader/dl_dyld.xs
788--- a/ext/DynaLoader/dl_dyld.xs~ 2011-10-11 21:41:27.000000000 +0100
789+++ b/ext/DynaLoader/dl_dyld.xs 2011-10-11 21:42:20.000000000 +0100
790@@ -41,6 +41,35 @@
791 #include "perl.h"
792 #include "XSUB.h"
793
794+#ifndef pTHX
795+# define pTHX void
796+# define pTHX_
797+#endif
798+#ifndef aTHX
799+# define aTHX
800+# define aTHX_
801+#endif
802+#ifndef dTHX
803+# define dTHXa(a) extern int Perl___notused(void)
804+# define dTHX extern int Perl___notused(void)
805+#endif
806+
807+#ifndef Perl_form_nocontext
808+# define Perl_form_nocontext form
809+#endif
810+
811+#ifndef Perl_warn_nocontext
812+# define Perl_warn_nocontext warn
813+#endif
814+
815+#ifndef PTR2IV
816+# define PTR2IV(p) (IV)(p)
817+#endif
818+
819+#ifndef get_av
820+# define get_av perl_get_av
821+#endif
822+
823 #define DL_LOADONCEONLY
824
825 #include "dlutils.c" /* SaveError() etc */
826@@ -185,7 +191,7 @@
827 CODE:
828 DLDEBUG(1,PerlIO_printf(Perl_debug_log, "dl_load_file(%s,%x):\n", filename,flags));
829 if (flags & 0x01)
830- Perl_warn(aTHX_ "Can't make loaded symbols global on this platform while loading %s",filename);
831+ Perl_warn_nocontext("Can't make loaded symbols global on this platform while loading %s",filename);
832 RETVAL = dlopen(filename, mode) ;
833 DLDEBUG(2,PerlIO_printf(Perl_debug_log, " libref=%x\n", RETVAL));
834 ST(0) = sv_newmortal() ;
835EOPATCH
836 if ($major < 4 && !extract_from_file('util.c', qr/^form/m)) {
837 apply_patch(<<'EOPATCH');
838diff -u a/ext/DynaLoader/dl_dyld.xs~ a/ext/DynaLoader/dl_dyld.xs
839--- a/ext/DynaLoader/dl_dyld.xs~ 2011-10-11 21:56:25.000000000 +0100
840+++ b/ext/DynaLoader/dl_dyld.xs 2011-10-11 22:00:00.000000000 +0100
841@@ -60,6 +60,18 @@
842 # define get_av perl_get_av
843 #endif
844
845+static char *
846+form(char *pat, ...)
847+{
848+ char *retval;
849+ va_list args;
850+ va_start(args, pat);
851+ vasprintf(&retval, pat, &args);
852+ va_end(args);
853+ SAVEFREEPV(retval);
854+ return retval;
855+}
856+
857 #define DL_LOADONCEONLY
858
859 #include "dlutils.c" /* SaveError() etc */
860EOPATCH
861 }
862 }
863
864 edit_file('hints/darwin.sh', sub {
865 my $code = shift;
866 # Part of commit 8f4f83badb7d1ba9, which mostly undoes
867 # commit 0511a818910f476c.
868 $code =~ s/^cppflags='-traditional-cpp';$/cppflags="\${cppflags} -no-cpp-precomp"/m;
869 # commit 14c11978e9b52e08/803bb6cc74d36a3f
870 # Without this, code in libperl.bundle links against op.o
871 # in preference to opmini.o on the linker command line,
872 # and hence miniperl tries to use File::Glob instead of
873 # csh
874 $code =~ s/^(lddlflags=)/ldflags="\${ldflags} -flat_namespace"\n$1/m;
875 # f556e5b971932902 also patches Makefile.SH with some
876 # special case code to deal with useshrplib for darwin.
877 # Given that post 5.8.0 the darwin hints default was
878 # changed to false, and it would be very complex to splice
879 # in that code in various versions of Makefile.SH back
880 # to 5.002, lets just turn it off.
881 $code =~ s/^useshrplib='true'/useshrplib='false'/m
882 if $faking_it;
883 return $code;
884 });
885 }
283e4721
NC
886} elsif ($^O eq 'netbsd') {
887 if ($major < 6) {
888 # These are part of commit 099685bc64c7dbce
889 edit_file('hints/netbsd.sh', sub {
890 my $code = shift;
891 my $fixed = <<'EOC';
892case "$osvers" in
8930.9|0.8*)
894 usedl="$undef"
895 ;;
896*)
897 if [ -f /usr/libexec/ld.elf_so ]; then
898 d_dlopen=$define
899 d_dlerror=$define
900 ccdlflags="-Wl,-E -Wl,-R${PREFIX}/lib $ccdlflags"
901 cccdlflags="-DPIC -fPIC $cccdlflags"
902 lddlflags="--whole-archive -shared $lddlflags"
903 elif [ "`uname -m`" = "pmax" ]; then
904# NetBSD 1.3 and 1.3.1 on pmax shipped an `old' ld.so, which will not work.
905 d_dlopen=$undef
906 elif [ -f /usr/libexec/ld.so ]; then
907 d_dlopen=$define
908 d_dlerror=$define
909 ccdlflags="-Wl,-R${PREFIX}/lib $ccdlflags"
910# we use -fPIC here because -fpic is *NOT* enough for some of the
911# extensions like Tk on some netbsd platforms (the sparc is one)
912 cccdlflags="-DPIC -fPIC $cccdlflags"
913 lddlflags="-Bforcearchive -Bshareable $lddlflags"
914 else
915 d_dlopen=$undef
916 fi
917 ;;
918esac
919EOC
920 $code =~ s/^case "\$osvers" in\n0\.9\|0\.8.*?^esac\n/$fixed/ms;
921 return $code;
922 });
923 if (!extract_from_file('unixish.h',
924 qr/defined\(NSIG\).*defined\(__NetBSD__\)/)) {
925 apply_patch(<<'EOPATCH')
926diff --git a/unixish.h b/unixish.h
927index 2a6cbcd..eab2de1 100644
928--- a/unixish.h
929+++ b/unixish.h
930@@ -89,7 +89,7 @@
931 */
932 /* #define ALTERNATE_SHEBANG "#!" / **/
933
934-#if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
935+#if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX) || defined(__NetBSD__)
936 # include <signal.h>
937 #endif
938
939EOPATCH
940 }
941 }
d64af352
NC
942}
943
cfadff5f
NC
944if ($major < 10) {
945 if (!extract_from_file('ext/DB_File/DB_File.xs',
946 qr!^#else /\* Berkeley DB Version > 2 \*/$!)) {
947 # This DB_File.xs is really too old to patch up.
948 # Skip DB_File, unless we're invoked with an explicit -Unoextensions
949 if (!exists $defines{noextensions}) {
950 $defines{noextensions} = 'DB_File';
951 } elsif (defined $defines{noextensions}) {
952 $defines{noextensions} .= ' DB_File';
953 }
954 } elsif (!extract_from_file('ext/DB_File/DB_File.xs',
955 qr/^#ifdef AT_LEAST_DB_4_1$/)) {
956 # This line is changed by commit 3245f0580c13b3ab
957 my $line = extract_from_file('ext/DB_File/DB_File.xs',
958 qr/^( status = \(?RETVAL->dbp->open\)?\(RETVAL->dbp, name, NULL, RETVAL->type, $)/);
959 apply_patch(<<"EOPATCH");
960diff --git a/ext/DB_File/DB_File.xs b/ext/DB_File/DB_File.xs
961index 489ba96..fba8ded 100644
962--- a/ext/DB_File/DB_File.xs
963+++ b/ext/DB_File/DB_File.xs
964\@\@ -183,4 +187,8 \@\@
965 #endif
966
967+#if DB_VERSION_MAJOR > 4 || (DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR >= 1)
968+# define AT_LEAST_DB_4_1
969+#endif
970+
971 /* map version 2 features & constants onto their version 1 equivalent */
972
973\@\@ -1334,7 +1419,12 \@\@ SV * sv ;
974 #endif
975
976+#ifdef AT_LEAST_DB_4_1
977+ status = (RETVAL->dbp->open)(RETVAL->dbp, NULL, name, NULL, RETVAL->type,
978+ Flags, mode) ;
979+#else
980 $line
981 Flags, mode) ;
982+#endif
983 /* printf("open returned %d %s\\n", status, db_strerror(status)) ; */
984
985EOPATCH
986 }
987}
988
6a8dbfd7
NC
989# if Encode is not needed for the test, you can speed up the bisect by
990# excluding it from the runs with -Dnoextensions=Encode
991# ccache is an easy win. Remove it if it causes problems.
6a8dbfd7
NC
992# Commit 1cfa4ec74d4933da adds ignore_versioned_solibs to Configure, and sets it
993# to true in hints/linux.sh
994# On dromedary, from that point on, Configure (by default) fails to find any
995# libraries, because it scans /usr/local/lib /lib /usr/lib, which only contain
996# versioned libraries. Without -lm, the build fails.
997# Telling /usr/local/lib64 /lib64 /usr/lib64 works from that commit onwards,
998# until commit faae14e6e968e1c0 adds it to the hints.
999# However, prior to 1cfa4ec74d4933da telling Configure the truth doesn't work,
1000# because it will spot versioned libraries, pass them to the compiler, and then
1001# bail out pretty early on. Configure won't let us override libswanted, but it
1002# will let us override the entire libs list.
1003
1004unless (extract_from_file('Configure', 'ignore_versioned_solibs')) {
1005 # Before 1cfa4ec74d4933da, so force the libs list.
1006
1007 my @libs;
1008 # This is the current libswanted list from Configure, less the libs removed
1009 # by current hints/linux.sh
1010 foreach my $lib (qw(sfio socket inet nsl nm ndbm gdbm dbm db malloc dl dld
1011 ld sun m crypt sec util c cposix posix ucb BSD)) {
1012 foreach my $dir (@paths) {
1013 next unless -f "$dir/lib$lib.so";
1014 push @libs, "-l$lib";
1015 last;
1016 }
1017 }
390a69a9 1018 $defines{libs} = \@libs unless exists $defines{libs};
6a8dbfd7
NC
1019}
1020
390a69a9
NC
1021$defines{usenm} = undef
1022 if $major < 2 && !exists $defines{usenm};
0142f0ce 1023
67382a3b
NC
1024my (@missing, @created_dirs);
1025
f4800c99 1026if ($options{'force-manifest'}) {
67382a3b
NC
1027 open my $fh, '<', 'MANIFEST'
1028 or die "Could not open MANIFEST: $!";
1029 while (<$fh>) {
1030 next unless /^(\S+)/;
1031 push @missing, $1
1032 unless -f $1;
1033 }
1034 close $fh or die "Can't close MANIFEST: $!";
1035
1036 foreach my $pathname (@missing) {
1037 my @parts = split '/', $pathname;
1038 my $leaf = pop @parts;
1039 my $path = '.';
1040 while (@parts) {
1041 $path .= '/' . shift @parts;
1042 next if -d $path;
1043 mkdir $path, 0700 or die "Can't create $path: $!";
1044 unshift @created_dirs, $path;
1045 }
1046 open $fh, '>', $pathname or die "Can't open $pathname: $!";
1047 close $fh or die "Can't close $pathname: $!";
1048 chmod 0, $pathname or die "Can't chmod 0 $pathname: $!";
1049 }
1050}
1051
af7c500f 1052my @ARGS = '-dEs';
390a69a9
NC
1053foreach my $key (sort keys %defines) {
1054 my $val = $defines{$key};
1055 if (ref $val) {
1056 push @ARGS, "-D$key=@$val";
1057 } elsif (!defined $val) {
1058 push @ARGS, "-U$key";
1059 } elsif (!length $val) {
1060 push @ARGS, "-D$key";
1061 } else {
1062 $val = "" if $val eq "\0";
1063 push @ARGS, "-D$key=$val";
1064 }
1065}
1066push @ARGS, map {"-A$_"} @{$options{A}};
1067
6a8dbfd7
NC
1068# </dev/null because it seems that some earlier versions of Configure can
1069# call commands in a way that now has them reading from stdin (and hanging)
1070my $pid = fork;
1071die "Can't fork: $!" unless defined $pid;
1072if (!$pid) {
7c22f158
NC
1073 open STDIN, '<', '/dev/null';
1074 # If a file in MANIFEST is missing, Configure asks if you want to
1075 # continue (the default being 'n'). With stdin closed or /dev/null,
1076 # it exits immediately and the check for config.sh below will skip.
6a8dbfd7
NC
1077 exec './Configure', @ARGS;
1078 die "Failed to start Configure: $!";
1079}
1080waitpid $pid, 0
1081 or die "wait for Configure, pid $pid failed: $!";
1082
af7c500f
NC
1083# Emulate noextensions if Configure doesn't support it.
1084if (-f 'config.sh') {
1085 if ($major < 10 && $defines{noextensions}) {
1086 edit_file('config.sh', sub {
1087 my @lines = split /\n/, shift;
1088 my @ext = split /\s+/, $defines{noextensions};
1089 foreach (@lines) {
1090 next unless /^extensions=/ || /^dynamic_ext/;
1091 foreach my $ext (@ext) {
1092 s/\b$ext( )?\b/$1/;
1093 }
1094 }
1095 return join "\n", @lines;
1096 });
1097 }
dd7c3e6c
NC
1098 if ($major < 4 && !extract_from_file('config.sh', qr/^trnl=/)) {
1099 # This seems to be necessary to avoid makedepend becoming confused,
1100 # and hanging on stdin. Seems that the code after
1101 # make shlist || ...here... is never run.
1102 edit_file('makedepend.SH', sub {
1103 my $code = shift;
1104 $code =~ s/^trnl='\$trnl'$/trnl='\\n'/m;
1105 return $code;
1106 });
1107 }
1108
af7c500f
NC
1109 system './Configure -S </dev/null' and die;
1110}
1111
0afef97d
NC
1112if ($target =~ /config\.s?h/) {
1113 match_and_exit($target) if $match && -f $target;
30a13282
NC
1114 report_and_exit(!-f $target, 'could build', 'could not build', $target)
1115 if $options{'test-build'};
1116
1117 my $ret = system @ARGV;
1118 report_and_exit($ret, 'zero exit from', 'non-zero exit from', "@ARGV");
dd4e46d7
NC
1119} elsif (!-f 'config.sh') {
1120 # Skip if something went wrong with Configure
1121
1122 skip('could not build config.sh');
1123}
6a8dbfd7 1124
67382a3b
NC
1125# This is probably way too paranoid:
1126if (@missing) {
1127 my @errors;
eb4906f4 1128 require Fcntl;
67382a3b
NC
1129 foreach my $file (@missing) {
1130 my (undef, undef, $mode, undef, undef, undef, undef, $size)
1131 = stat $file;
1132 if (!defined $mode) {
1133 push @errors, "Added file $file has been deleted by Configure";
1134 next;
1135 }
eb4906f4 1136 if (Fcntl::S_IMODE($mode) != 0) {
67382a3b
NC
1137 push @errors,
1138 sprintf 'Added file %s had mode changed by Configure to %03o',
1139 $file, $mode;
1140 }
1141 if ($size != 0) {
1142 push @errors,
1143 "Added file $file had sized changed by Configure to $size";
1144 }
1145 unlink $file or die "Can't unlink $file: $!";
1146 }
1147 foreach my $dir (@created_dirs) {
1148 rmdir $dir or die "Can't rmdir $dir: $!";
1149 }
6c0925a0
NC
1150 skip("@errors")
1151 if @errors;
67382a3b
NC
1152}
1153
6a8dbfd7
NC
1154# Correct makefile for newer GNU gcc
1155# Only really needed if you comment out the use of blead's makedepend.SH
1156{
1157 local $^I = "";
1158 local @ARGV = qw(makefile x2p/makefile);
1159 while (<>) {
1160 print unless /<(?:built-in|command|stdin)/;
1161 }
1162}
6a8dbfd7 1163
0142f0ce
NC
1164if ($major == 2 && extract_from_file('perl.c', qr/^ fclose\(e_fp\);$/)) {
1165 # need to patch perl.c to avoid calling fclose() twice on e_fp when using -e
1166 # This diff is part of commit ab821d7fdc14a438. The second close was
1167 # introduced with perl-5.002, commit a5f75d667838e8e7
1168 # Might want a6c477ed8d4864e6 too, for the corresponding change to pp_ctl.c
1169 # (likely without this, eval will have "fun")
1170 apply_patch(<<'EOPATCH');
1171diff --git a/perl.c b/perl.c
1172index 03c4d48..3c814a2 100644
1173--- a/perl.c
1174+++ b/perl.c
1175@@ -252,6 +252,7 @@ setuid perl scripts securely.\n");
1176 #ifndef VMS /* VMS doesn't have environ array */
1177 origenviron = environ;
1178 #endif
1179+ e_tmpname = Nullch;
1180
1181 if (do_undump) {
1182
1183@@ -405,6 +406,7 @@ setuid perl scripts securely.\n");
1184 if (e_fp) {
1185 if (Fflush(e_fp) || ferror(e_fp) || fclose(e_fp))
1186 croak("Can't write to temp file for -e: %s", Strerror(errno));
1187+ e_fp = Nullfp;
1188 argc++,argv--;
1189 scriptname = e_tmpname;
1190 }
1191@@ -470,10 +472,10 @@ setuid perl scripts securely.\n");
1192 curcop->cop_line = 0;
1193 curstash = defstash;
1194 preprocess = FALSE;
1195- if (e_fp) {
1196- fclose(e_fp);
1197- e_fp = Nullfp;
1198+ if (e_tmpname) {
1199 (void)UNLINK(e_tmpname);
1200+ Safefree(e_tmpname);
1201+ e_tmpname = Nullch;
1202 }
1203
1204 /* now that script is parsed, we can modify record separator */
1205@@ -1369,7 +1371,7 @@ SV *sv;
1206 scriptname = xfound;
1207 }
1208
1209- origfilename = savepv(e_fp ? "-e" : scriptname);
1210+ origfilename = savepv(e_tmpname ? "-e" : scriptname);
1211 curcop->cop_filegv = gv_fetchfile(origfilename);
1212 if (strEQ(origfilename,"-"))
1213 scriptname = "";
1214
1215EOPATCH
1216}
1217
c59e8fd6
NC
1218if ($major < 10 and -f 'ext/IPC/SysV/SysV.xs') {
1219 edit_file('ext/IPC/SysV/SysV.xs', sub {
1220 my $xs = shift;
1221 my $fixed = <<'EOFIX';
1222
1223#include <sys/types.h>
1224#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
1225#ifndef HAS_SEM
1226# include <sys/ipc.h>
1227#endif
1228# ifdef HAS_MSG
1229# include <sys/msg.h>
1230# endif
1231# ifdef HAS_SHM
1232# if defined(PERL_SCO) || defined(PERL_ISC)
1233# include <sys/sysmacros.h> /* SHMLBA */
1234# endif
1235# include <sys/shm.h>
1236# ifndef HAS_SHMAT_PROTOTYPE
1237 extern Shmat_t shmat (int, char *, int);
1238# endif
1239# if defined(HAS_SYSCONF) && defined(_SC_PAGESIZE)
1240# undef SHMLBA /* not static: determined at boot time */
1241# define SHMLBA sysconf(_SC_PAGESIZE)
1242# elif defined(HAS_GETPAGESIZE)
1243# undef SHMLBA /* not static: determined at boot time */
1244# define SHMLBA getpagesize()
1245# endif
1246# endif
1247#endif
1248EOFIX
1249 $xs =~ s!
1250#include <sys/types\.h>
1251.*
1252(#ifdef newCONSTSUB|/\* Required)!$fixed$1!ms;
1253 return $xs;
1254 });
1255}
1256
686af304
NC
1257if (-f 'ext/POSIX/Makefile.PL'
1258 && extract_from_file('ext/POSIX/Makefile.PL',
1259 qr/Explicitly avoid including/)) {
1260 # commit 6695a346c41138df, which effectively reverts 170888cff5e2ffb7
1261
1262 # PERL5LIB is populated by make_ext.pl with paths to the modules we need
1263 # to run, don't override this with "../../lib" since that may not have
1264 # been populated yet in a parallel build.
1265 apply_patch(<<'EOPATCH');
1266diff --git a/ext/POSIX/Makefile.PL b/ext/POSIX/Makefile.PL
1267index 392b6fb..9e6d091 100644
1268--- a/ext/POSIX/Makefile.PL
1269+++ b/ext/POSIX/Makefile.PL
1270@@ -1,7 +1,3 @@
1271-# Explicitly avoid including '.' in @INC; autoloader gets confused since it
1272-# can find POSIX.pm, but can't find autosplit.ix.
1273-BEGIN { @INC = '../../lib';}
1274-#
1275 use ExtUtils::MakeMaker;
1276 use ExtUtils::Constant 0.11 'WriteConstants';
1277 use Config;
1278EOPATCH
1279}
1280
9a999a97 1281# Parallel build for miniperl is safe
9da8cb0a 1282system "make $j miniperl </dev/null";
9a999a97 1283
2526f4b8
NC
1284my $expected = $target =~ /^test/ ? 't/perl'
1285 : $target eq 'Fcntl' ? "lib/auto/Fcntl/Fcntl.$Config{so}"
1286 : $target;
1287my $real_target = $target eq 'Fcntl' ? $expected : $target;
1288
9a999a97
NC
1289if ($target ne 'miniperl') {
1290 # Nearly all parallel build issues fixed by 5.10.0. Untrustworthy before that.
372ba1f9 1291 $j = '' if $major < 10;
9a999a97 1292
2526f4b8 1293 if ($real_target eq 'test_prep') {
9a999a97
NC
1294 if ($major < 8) {
1295 # test-prep was added in 5.004_01, 3e3baf6d63945cb6.
1296 # renamed to test_prep in 2001 in 5fe84fd29acaf55c.
1297 # earlier than that, just make test. It will be fast enough.
2526f4b8
NC
1298 $real_target = extract_from_file('Makefile.SH',
1299 qr/^(test[-_]prep):/,
1300 'test');
9a999a97 1301 }
6a8dbfd7 1302 }
6a8dbfd7 1303
9da8cb0a 1304 system "make $j $real_target </dev/null";
9a999a97 1305}
6a8dbfd7 1306
67382a3b
NC
1307my $missing_target = $expected =~ /perl$/ ? !-x $expected : !-r $expected;
1308
f4800c99 1309if ($options{'test-build'}) {
2526f4b8
NC
1310 report_and_exit($missing_target, 'could build', 'could not build',
1311 $real_target);
67382a3b 1312} elsif ($missing_target) {
2526f4b8 1313 skip("could not build $real_target");
67382a3b 1314}
6a8dbfd7 1315
2526f4b8 1316match_and_exit($real_target) if $match;
0afef97d
NC
1317
1318if (defined $options{'one-liner'}) {
2526f4b8 1319 my $exe = $target =~ /^(?:perl$|test)/ ? 'perl' : 'miniperl';
0afef97d
NC
1320 unshift @ARGV, "./$exe", '-Ilib', '-e', $options{'one-liner'};
1321}
1322
6a8dbfd7 1323# This is what we came here to run:
915f531b
NC
1324
1325if (exists $Config{ldlibpthname}) {
1326 require Cwd;
1327 my $varname = $Config{ldlibpthname};
1328 my $cwd = Cwd::getcwd();
1329 if (defined $ENV{$varname}) {
1330 $ENV{$varname} = $cwd . $Config{path_sep} . $ENV{$varname};
1331 } else {
1332 $ENV{$varname} = $cwd;
1333 }
1334}
1335
6a8dbfd7
NC
1336my $ret = system @ARGV;
1337
f1050811 1338report_and_exit($ret, 'zero exit from', 'non-zero exit from', "@ARGV");
9a999a97
NC
1339
1340# Local variables:
1341# cperl-indent-level: 4
1342# indent-tabs-mode: nil
1343# End:
1344#
1345# ex: set ts=8 sts=4 sw=4 et: