4 use Getopt::Long qw(:config bundling no_auto_abbrev);
9 = qw(config.sh config.h miniperl lib/Config.pm Fcntl perl test_prep);
12 if (open my $fh, '<', '/proc/cpuinfo') {
14 ++$cpus if /^processor\s+:\s+\d+$/;
16 } elsif (-x '/sbin/sysctl') {
17 $cpus = 1 + $1 if `/sbin/sysctl hw.ncpu` =~ /^hw\.ncpu: (\d+)$/;
18 } elsif (-x '/usr/bin/getconf') {
19 $cpus = 1 + $1 if `/usr/bin/getconf _NPROCESSORS_ONLN` =~ /^(\d+)$/;
24 jobs => defined $cpus ? $cpus + 1 : 2,
26 clean => 1, # mostly for debugging this
29 my $linux64 = `uname -sm` eq "Linux x86_64\n" ? '64' : '';
31 my @paths = map {$_ . $linux64} qw(/usr/local/lib /lib /usr/lib);
39 ($linux64 ? (libpth => \@paths) : ()),
42 unless(GetOptions(\%options,
43 'target=s', 'jobs|j=i', 'expect-pass=i',
44 'expect-fail' => sub { $options{'expect-pass'} = 0; },
45 'clean!', 'one-liner|e=s', 'match=s', 'force-manifest',
46 'test-build', 'check-args', 'A=s@', 'usage|help|?',
48 my (undef, $val) = @_;
49 if ($val =~ /\A([^=]+)=(.*)/s) {
50 $defines{$1} = length $2 ? $2 : "\0";
56 $defines{$_[1]} = undef;
59 pod2usage(exitval => 255, verbose => 1);
62 my ($target, $j, $match) = @options{qw(target jobs match)};
64 pod2usage(exitval => 255, verbose => 1) if $options{usage};
65 pod2usage(exitval => 255, verbose => 1)
66 unless @ARGV || $match || $options{'test-build'} || defined $options{'one-liner'};
68 exit 0 if $options{'check-args'};
72 bisect.pl - use git bisect to pinpoint changes
76 # When did this become an error?
77 .../Porting/bisect.pl -e 'my $a := 2;'
78 # When did this stop being an error?
79 .../Porting/bisect.pl --expect-fail -e '1 // 2'
80 # When did this stop matching?
81 .../Porting/bisect.pl --match '\b(?:PL_)hash_seed_set\b'
82 # When did this start matching?
83 .../Porting/bisect.pl --expect-fail --match '\buseithreads\b'
84 # When did this test program stop working?
85 .../Porting/bisect.pl -- ./perl -Ilib test_prog.pl
86 # When did this first become valid syntax?
87 .../Porting/bisect.pl --target=miniperl --end=v5.10.0 \
88 --expect-fail -e 'my $a := 2;'
89 # What was the last revision to build with these options?
90 .../Porting/bisect.pl --test-build -Dd_dosuid
94 Together F<bisect.pl> and F<bisect-runner.pl> attempt to automate the use
95 of C<git bisect> as much as possible. With one command (and no other files)
102 Which commit caused this example code to break?
106 Which commit caused this example code to start working?
110 Which commit added the first to match this regex?
114 Which commit removed the last to match this regex?
118 usually without needing to know which versions of perl to use as start and
121 By default F<bisect.pl> will process all options, then use the rest of the
122 command line as arguments to list C<system> to run a test case. By default,
123 the test case should pass (exit with 0) on earlier perls, and fail (exit
124 non-zero) on I<blead>. F<bisect.pl> will use F<bisect-runner.pl> to find the
125 earliest stable perl version on which the test case passes, check that it
126 fails on blead, and then use F<bisect-runner.pl> with C<git bisect run> to
127 find the commit which caused the failure.
129 Because the test case is the complete argument to C<system>, it is easy to
130 run something other than the F<perl> built, if necessary. If you need to run
131 the perl built, you'll probably need to invoke it as C<./perl -Ilib ...>
133 You need a clean checkout to run a bisect, and you can't use the checkout
134 which contains F<Porting/bisect.pl> (because C<git bisect>) will check out
135 a revision before F<Porting/bisect-runner.pl> was added, which
136 C<git bisect run> needs). If your working checkout is called F<perl>, the
137 simplest solution is to make a local clone, and run from that. I<i.e.>:
142 ../perl/Porting/bisect.pl ...
144 By default, F<bisect-runner.pl> will automatically disable the build of
145 L<DB_File> for commits earlier than ccb44e3bf3be2c30, as it's not practical
146 to patch DB_File 1.70 and earlier to build with current Berkeley DB headers.
147 (ccb44e3bf3be2c30 was in September 1999, between 5.005_62 and 5.005_63.)
148 If your F<db.h> is old enough you can override this with C<-Unoextensions>.
156 --start I<commit-ish>
158 Earliest revision to test, as a I<commit-ish> (a tag, commit or anything
159 else C<git> understands as a revision). If not specified, F<bisect.pl> will
160 search stable perl releases from 5.002 to 5.14.0 until it finds one where
161 the test case passes.
167 Most recent revision to test, as a I<commit-ish>. If not specified, defaults
174 F<Makefile> target (or equivalent) needed, to run the test case. If specified,
175 this should be one of
183 Just run F<./Configure>
189 Run the various F<*.SH> files to generate F<Makefile>, F<config.h>, I<etc>.
201 Use F<miniperl> to build F<lib/Config.pm>
207 Build F<lib/auto/Fcntl/Fnctl.so> (strictly, C<.$Config{so}>). As L<Fcntl>
208 is simple XS module present since 5.000, this provides a fast test of
209 whether XS modules can be built. Note, XS modules are built by F<miniperl>,
210 hence this target will not build F<perl>.
216 Build F<perl>. This also builds pure-Perl modules in F<cpan>, F<dist> and
217 F<ext>. XS modules (such as L<Fcntl>) are not built.
223 Build everything needed to run the tests. This is the default if we're
224 running test code, but is time consuming, as it means building all
225 XS modules. For older F<Makefile>s, the previous name of C<test-prep>
226 is automatically substituted. For very old F<Makefile>s, C<make test> is
227 run, as there is no target provided to just get things ready, and for 5.004
228 and earlier the tests run very quickly.
234 --one-liner 'code to run'
240 Example code to run, just like you'd use with C<perl -e>.
242 This prepends C<./perl -Ilib -e 'code to run'> to the test case given,
243 or F<./miniperl> if I<target> is C<miniperl>.
245 (Usually you'll use C<-e> instead of providing a test case in the
246 non-option arguments to F<bisect.pl>)
248 C<-E> intentionally isn't supported, as it's an error in 5.8.0 and earlier,
249 which interferes with detecting errors in the example code itself.
255 The test case should fail for the I<start> revision, and pass for the I<end>
256 revision. The bisect run will find the first commit where it passes.
260 -Dnoextensions=Encode
268 -Accflags=-DNO_MATHOMS
270 Arguments to pass to F<Configure>. Repeated C<-A> arguments are passed
271 through as is. C<-D> and C<-U> are processed in order, and override
272 previous settings for the same parameter. F<bisect-runner.pl> emulates
273 C<-Dnoextensions> when F<Configure> itself does not provide it, as it's
274 often very useful to be able to disable some XS extensions.
284 Number of C<make> jobs to run in parallel. If F</proc/cpuinfo> exists and
285 can be parsed, or F</sbin/sysctl> exists and reports C<hw.ncpu>, or
286 F</usr/bin/getconf> exists and reports C<_NPROCESSORS_ONLN> defaults to 1 +
287 I<number of CPUs>. Otherwise defaults to 2.
293 Instead of running a test program to determine I<pass> or I<fail>, pass
294 if the given regex matches, and hence search for the commit that removes
295 the last matching file.
297 If no I<target> is specified, the match is against all files in the
298 repository (which is fast). If a I<target> is specified, that target is
299 built, and the match is against only the built files. C<--expect-fail> can
300 be used with C<--match> to search for a commit that adds files that match.
306 Test that the build completes, without running any test case.
308 By default, if the build for the desired I<target> fails to complete,
309 F<bisect-runner.pl> reports a I<skip> back to C<git bisect>, the assumption
310 being that one wants to find a commit which changed state "builds && passes"
311 to "builds && fails". If instead one is interested in which commit broke the
312 build (possibly for particular F<Configure> options), use I<--test-build>
313 to treat a build failure as a failure, not a "skip".
315 Often this option isn't as useful as it first seems, because I<any> build
316 failure will be reported to C<git bisect> as a failure, not just the failure
317 that you're interested in. Generally, to debug a particular problem, it's
318 more useful to use a I<target> that builds properly at the point of interest,
319 and then a test case that runs C<make>. For example:
321 .../Porting/bisect.pl --start=perl-5.000 --end=perl-5.002 \
322 --expect-fail --force-manifest --target=miniperl make perl
324 will find the first revision capable of building L<DynaLoader> and then
325 F<perl>, without becoming confused by revisions where F<miniperl> won't
332 By default, a build will "skip" if any files listed in F<MANIFEST> are not
333 present. Usually this is useful, as it avoids false-failures. However, there
334 are some long ranges of commits where listed files are missing, which can
335 cause a bisect to abort because all that remain are skipped revisions.
337 In these cases, particularly if the test case uses F<miniperl> and no modules,
338 it may be more useful to force the build to continue, even if files
339 F<MANIFEST> are missing.
345 C<--expect-pass=0> is equivalent to C<--expect-fail>. I<1> is the default.
351 Tell F<bisect-runner.pl> not to clean up after the build. This allows one
352 to use F<bisect-runner.pl> to build the current particular perl revision for
353 interactive testing, or for debugging F<bisect-runner.pl>.
355 Passing this to F<bisect.pl> will likely cause the bisect to fail badly.
361 Validate the options and arguments, and exit silently if they are valid.
375 Display the usage information and exit.
381 die "$0: Can't build $target" if defined $target && !grep {@targets} $target;
383 $j = "-j$j" if $j =~ /\A\d+\z/;
385 # Sadly, however hard we try, I don't think that it will be possible to build
386 # modules in ext/ on x86_64 Linux before commit e1666bf5602ae794 on 1999/12/29,
387 # which updated to MakeMaker 3.7, which changed from using a hard coded ld
388 # in the Makefile to $(LD). On x86_64 Linux the "linker" is gcc.
390 sub extract_from_file {
391 my ($file, $rx, $default) = @_;
392 open my $fh, '<', $file or die "Can't open $file: $!";
395 return wantarray ? @got : $got[0]
398 return $default if defined $default;
403 my ($file, $munger) = @_;
405 open my $fh, '<', $file or die "Can't open $file: $!";
407 die "Can't read $file: $!" unless defined $orig && close $fh;
408 my $new = $munger->($orig);
409 return if $new eq $orig;
410 open $fh, '>', $file or die "Can't open $file: $!";
411 print $fh $new or die "Can't print to $file: $!";
412 close $fh or die "Can't close $file: $!";
418 my ($file) = $patch =~ qr!^diff.*a/(\S+) b/\1!;
419 open my $fh, '|-', 'patch', '-p1' or die "Can't run patch: $!";
422 print STDERR "Patch is <<'EOPATCH'\n${patch}EOPATCH\n";
423 die "Can't patch $file: $?, $!";
427 if ($options{clean}) {
428 # Needed, because files that are build products in this checked out
429 # version might be in git in the next desired version.
430 system 'git clean -dxf </dev/null';
431 # Needed, because at some revisions the build alters checked out files.
432 # (eg pod/perlapi.pod). Also undoes any changes to makedepend.SH
433 system 'git reset --hard HEAD </dev/null';
440 warn "skipping - $reason";
444 sub report_and_exit {
445 my ($ret, $pass, $fail, $desc) = @_;
449 my $got = ($options{'expect-pass'} ? !$ret : $ret) ? 'good' : 'bad';
451 print "$got - $fail $desc\n";
453 print "$got - $pass $desc\n";
467 @files = defined $target ? `git ls-files -o -z`: `git ls-files -z`;
471 foreach my $file (@files) {
472 open my $fh, '<', $file or die "Can't open $file: $!";
476 if (tr/\t\r\n -~\200-\377//c) {
477 print "Binary file $file matches\n";
479 $_ .= "\n" unless /\n\z/;
484 close $fh or die "Can't close $file: $!";
486 report_and_exit(!$matches,
487 $matches == 1 ? '1 match for' : "$matches matches for",
488 'no matches for', $match);
491 # Not going to assume that system perl is yet new enough to have autodie
492 system 'git clean -dxf </dev/null' and die;
494 if (!defined $target) {
495 match_and_exit() if $match;
496 $target = 'test_prep';
499 skip('no Configure - is this the //depot/perlext/Compiler branch?')
500 unless -f 'Configure';
502 # This changes to PERL_VERSION in 4d8076ea25903dcb in 1999
504 = extract_from_file('patchlevel.h',
505 qr/^#define\s+(?:PERL_VERSION|PATCHLEVEL)\s+(\d+)\s/,
509 if (extract_from_file('Configure',
510 qr/^ \*=\*\) echo "\$1" >> \$optdef;;$/)) {
511 # This is " Spaces now allowed in -D command line options.",
512 # part of commit ecfc54246c2a6f42
513 apply_patch(<<'EOPATCH');
514 diff --git a/Configure b/Configure
515 index 3d3b38d..78ffe16 100755
518 @@ -652,7 +777,8 @@ while test $# -gt 0; do
519 echo "$me: use '-U symbol=', not '-D symbol='." >&2
520 echo "$me: ignoring -D $1" >&2
522 - *=*) echo "$1" >> $optdef;;
524 + sed -e "s/'/'\"'\"'/g" -e "s/=\(.*\)/='\1'/" >> $optdef;;
525 *) echo "$1='define'" >> $optdef;;
530 if (extract_from_file('Configure', qr/^if \$contains 'd_namlen' \$xinc\b/)) {
531 # Configure's original simple "grep" for d_namlen falls foul of the
532 # approach taken by the glibc headers:
533 # #ifdef _DIRENT_HAVE_D_NAMLEN
534 # # define _D_EXACT_NAMLEN(d) ((d)->d_namlen)
536 # where _DIRENT_HAVE_D_NAMLEN is not defined on Linux.
537 # This is also part of commit ecfc54246c2a6f42
538 apply_patch(<<'EOPATCH');
539 diff --git a/Configure b/Configure
540 index 3d3b38d..78ffe16 100755
543 @@ -3935,7 +4045,8 @@ $rm -f try.c
545 : see if the directory entry stores field length
547 -if $contains 'd_namlen' $xinc >/dev/null 2>&1; then
548 +$cppstdin $cppflags $cppminus < "$xinc" > try.c
549 +if $contains 'd_namlen' try.c >/dev/null 2>&1; then
550 echo "Good, your directory entry keeps length information in d_namlen." >&4
557 if ($major < 8 && !extract_from_file('Configure',
558 qr/^\t\tif test ! -t 0; then$/)) {
559 # Before dfe9444ca7881e71, Configure would refuse to run if stdin was not a
560 # tty. With that commit, the tty requirement was dropped for -de and -dE
561 # Commit aaeb8e512e8e9e14 dropped the tty requirement for -S
562 # For those older versions, it's probably easiest if we simply remove the
564 edit_file('Configure', sub {
566 $code =~ s/test ! -t 0/test Perl = rules/;
571 if ($major < 10 && extract_from_file('Configure', qr/^set malloc\.h i_malloc$/)) {
572 # This is commit 01d07975f7ef0e7d, trimmed, with $compile inlined as
573 # prior to bd9b35c97ad661cc Configure had the malloc.h test before the
574 # definition of $compile.
575 apply_patch(<<'EOPATCH');
576 diff --git a/Configure b/Configure
577 index 3d2e8b9..6ce7766 100755
580 @@ -6743,5 +6743,22 @@ set d_dosuid
582 : see if this is a malloc.h system
583 -set malloc.h i_malloc
585 +: we want a real compile instead of Inhdr because some systems have a
586 +: malloc.h that just gives a compile error saying to use stdlib.h instead
591 +int main () { return 0; }
594 +if $cc $optimize $ccflags $ldflags -o try $* try.c $libs > /dev/null 2>&1; then
595 + echo "<malloc.h> found." >&4
598 + echo "<malloc.h> NOT found." >&4
608 if ($major < 10 && -d 'ext/Unicode/Normalize/'
609 && !extract_from_file('Configure', qr/^extra_dep=''$/)) {
610 # The Makefile.PL for Unicode::Normalize needs
611 # lib/unicore/CombiningClass.pl. Even without a parallel build, we need
612 # a dependency to ensure that it builds. This is a variant of commit
614 apply_patch(<<'EOPATCH');
615 diff --git a/Makefile.SH b/Makefile.SH
616 index f61d0db..6097954 100644
619 @@ -155,10 +155,20 @@ esac
621 : Prepare dependency lists for Makefile.
624 for f in $dynamic_ext; do
625 : the dependency named here will never exist
626 base=`echo "$f" | sed 's/.*\///'`
627 - dynamic_list="$dynamic_list lib/auto/$f/$base.$dlext"
628 + this_target="lib/auto/$f/$base.$dlext"
629 + dynamic_list="$dynamic_list $this_target"
631 + : Parallel makes reveal that we have some interdependencies
633 + Math/BigInt/FastCalc) extra_dep="$extra_dep
634 +$this_target: lib/auto/List/Util/Util.$dlext" ;;
635 + Unicode/Normalize) extra_dep="$extra_dep
636 +$this_target: lib/unicore/CombiningClass.pl" ;;
641 @@ -987,2 +997,9 @@ n_dummy $(nonxs_ext): miniperl$(EXE_EXT) preplibrary $(DYNALOADER) FORCE
642 @$(LDLIBPTH) sh ext/util/make_ext nonxs $@ MAKE=$(MAKE) LIBPERL_A=$(LIBPERL)
645 +$spitshell >>Makefile <<EOF
649 +$spitshell >>Makefile <<'!NO!SUBS!'
654 # There was a bug in makedepend.SH which was fixed in version 96a8704c.
655 # Symptom was './makedepend: 1: Syntax error: Unterminated quoted string'
656 # Remove this if you're actually bisecting a problem related to makedepend.SH
657 system 'git show blead:makedepend.SH > makedepend.SH </dev/null' and die;
659 if ($^O eq 'freebsd') {
660 # There are rather too many version-specific FreeBSD hints fixes to patch
661 # individually. Also, more than once the FreeBSD hints file has been
662 # written in what turned out to be a rather non-future-proof style,
663 # with case statements treating the most recent version as the exception,
664 # instead of treating previous versions' behaviour explicitly and changing
665 # the default to cater for the current behaviour. (As strangely, future
666 # versions inherit the current behaviour.)
667 system 'git show blead:hints/freebsd.sh > hints/freebsd.sh </dev/null'
671 # 5.002 Configure and later have code to
673 # : Try to guess additional flags to pick up local libraries.
675 # which will automatically add --L/usr/local/lib because libpth
676 # contains /usr/local/lib
678 # Without it, if Configure finds libraries in /usr/local/lib (eg
679 # libgdbm.so) and adds them to the compiler commandline (as -lgdbm),
680 # then the link will fail. We can't fix this up in config.sh because
681 # the link will *also* fail in the test compiles that Configure does
682 # (eg $inlibc) which makes Configure get all sorts of things
683 # wrong. :-( So bodge it here.
685 # Possibly other platforms will need something similar. (if they
686 # have "wanted" libraries in /usr/local/lib, but the compiler
687 # doesn't default to putting that directory in its link path)
688 apply_patch(<<'EOPATCH');
689 --- perl2/hints/freebsd.sh.orig 2011-10-05 16:44:55.000000000 +0200
690 +++ perl2/hints/freebsd.sh 2011-10-05 16:45:52.000000000 +0200
693 libpth="/usr/lib /usr/local/lib"
694 glibpth="/usr/lib /usr/local/lib"
696 + ldflags="-Wl,-E -L/usr/local/lib "
699 cccdlflags='-DPIC -fPIC'
702 libpth="/usr/lib /usr/local/lib"
703 glibpth="/usr/lib /usr/local/lib"
705 + ldflags="-Wl,-E -L/usr/local/lib "
707 cccdlflags='-DPIC -fPIC'
714 if (!extract_from_file('ext/DB_File/DB_File.xs',
715 qr!^#else /\* Berkeley DB Version > 2 \*/$!)) {
716 # This DB_File.xs is really too old to patch up.
717 # Skip DB_File, unless we're invoked with an explicit -Unoextensions
718 if (!exists $defines{noextensions}) {
719 $defines{noextensions} = 'DB_File';
720 } elsif (defined $defines{noextensions}) {
721 $defines{noextensions} .= ' DB_File';
723 } elsif (!extract_from_file('ext/DB_File/DB_File.xs',
724 qr/^#ifdef AT_LEAST_DB_4_1$/)) {
725 # This line is changed by commit 3245f0580c13b3ab
726 my $line = extract_from_file('ext/DB_File/DB_File.xs',
727 qr/^( status = \(?RETVAL->dbp->open\)?\(RETVAL->dbp, name, NULL, RETVAL->type, $)/);
728 apply_patch(<<"EOPATCH");
729 diff --git a/ext/DB_File/DB_File.xs b/ext/DB_File/DB_File.xs
730 index 489ba96..fba8ded 100644
731 --- a/ext/DB_File/DB_File.xs
732 +++ b/ext/DB_File/DB_File.xs
733 \@\@ -183,4 +187,8 \@\@
736 +#if DB_VERSION_MAJOR > 4 || (DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR >= 1)
737 +# define AT_LEAST_DB_4_1
740 /* map version 2 features & constants onto their version 1 equivalent */
742 \@\@ -1334,7 +1419,12 \@\@ SV * sv ;
745 +#ifdef AT_LEAST_DB_4_1
746 + status = (RETVAL->dbp->open)(RETVAL->dbp, NULL, name, NULL, RETVAL->type,
752 /* printf("open returned %d %s\\n", status, db_strerror(status)) ; */
758 # if Encode is not needed for the test, you can speed up the bisect by
759 # excluding it from the runs with -Dnoextensions=Encode
760 # ccache is an easy win. Remove it if it causes problems.
761 # Commit 1cfa4ec74d4933da adds ignore_versioned_solibs to Configure, and sets it
762 # to true in hints/linux.sh
763 # On dromedary, from that point on, Configure (by default) fails to find any
764 # libraries, because it scans /usr/local/lib /lib /usr/lib, which only contain
765 # versioned libraries. Without -lm, the build fails.
766 # Telling /usr/local/lib64 /lib64 /usr/lib64 works from that commit onwards,
767 # until commit faae14e6e968e1c0 adds it to the hints.
768 # However, prior to 1cfa4ec74d4933da telling Configure the truth doesn't work,
769 # because it will spot versioned libraries, pass them to the compiler, and then
770 # bail out pretty early on. Configure won't let us override libswanted, but it
771 # will let us override the entire libs list.
773 unless (extract_from_file('Configure', 'ignore_versioned_solibs')) {
774 # Before 1cfa4ec74d4933da, so force the libs list.
777 # This is the current libswanted list from Configure, less the libs removed
778 # by current hints/linux.sh
779 foreach my $lib (qw(sfio socket inet nsl nm ndbm gdbm dbm db malloc dl dld
780 ld sun m crypt sec util c cposix posix ucb BSD)) {
781 foreach my $dir (@paths) {
782 next unless -f "$dir/lib$lib.so";
783 push @libs, "-l$lib";
787 $defines{libs} = \@libs unless exists $defines{libs};
790 # This seems to be necessary to avoid makedepend becoming confused, and hanging
791 # on stdin. Seems that the code after make shlist || ...here... is never run.
792 $defines{trnl} = q{'\n'}
793 if $major < 4 && !exists $defines{trnl};
795 $defines{usenm} = undef
796 if $major < 2 && !exists $defines{usenm};
798 my (@missing, @created_dirs);
800 if ($options{'force-manifest'}) {
801 open my $fh, '<', 'MANIFEST'
802 or die "Could not open MANIFEST: $!";
804 next unless /^(\S+)/;
808 close $fh or die "Can't close MANIFEST: $!";
810 foreach my $pathname (@missing) {
811 my @parts = split '/', $pathname;
812 my $leaf = pop @parts;
815 $path .= '/' . shift @parts;
817 mkdir $path, 0700 or die "Can't create $path: $!";
818 unshift @created_dirs, $path;
820 open $fh, '>', $pathname or die "Can't open $pathname: $!";
821 close $fh or die "Can't close $pathname: $!";
822 chmod 0, $pathname or die "Can't chmod 0 $pathname: $!";
827 foreach my $key (sort keys %defines) {
828 my $val = $defines{$key};
830 push @ARGS, "-D$key=@$val";
831 } elsif (!defined $val) {
832 push @ARGS, "-U$key";
833 } elsif (!length $val) {
834 push @ARGS, "-D$key";
836 $val = "" if $val eq "\0";
837 push @ARGS, "-D$key=$val";
840 push @ARGS, map {"-A$_"} @{$options{A}};
842 # </dev/null because it seems that some earlier versions of Configure can
843 # call commands in a way that now has them reading from stdin (and hanging)
845 die "Can't fork: $!" unless defined $pid;
847 open STDIN, '<', '/dev/null';
848 # If a file in MANIFEST is missing, Configure asks if you want to
849 # continue (the default being 'n'). With stdin closed or /dev/null,
850 # it exits immediately and the check for config.sh below will skip.
851 exec './Configure', @ARGS;
852 die "Failed to start Configure: $!";
855 or die "wait for Configure, pid $pid failed: $!";
857 # Emulate noextensions if Configure doesn't support it.
858 if (-f 'config.sh') {
859 if ($major < 10 && $defines{noextensions}) {
860 edit_file('config.sh', sub {
861 my @lines = split /\n/, shift;
862 my @ext = split /\s+/, $defines{noextensions};
864 next unless /^extensions=/ || /^dynamic_ext/;
865 foreach my $ext (@ext) {
869 return join "\n", @lines;
872 system './Configure -S </dev/null' and die;
875 if ($target =~ /config\.s?h/) {
876 match_and_exit($target) if $match && -f $target;
877 report_and_exit(!-f $target, 'could build', 'could not build', $target);
878 } elsif (!-f 'config.sh') {
879 # Skip if something went wrong with Configure
881 skip('could not build config.sh');
884 # This is probably way too paranoid:
888 foreach my $file (@missing) {
889 my (undef, undef, $mode, undef, undef, undef, undef, $size)
891 if (!defined $mode) {
892 push @errors, "Added file $file has been deleted by Configure";
895 if (Fcntl::S_IMODE($mode) != 0) {
897 sprintf 'Added file %s had mode changed by Configure to %03o',
902 "Added file $file had sized changed by Configure to $size";
904 unlink $file or die "Can't unlink $file: $!";
906 foreach my $dir (@created_dirs) {
907 rmdir $dir or die "Can't rmdir $dir: $!";
913 # Correct makefile for newer GNU gcc
914 # Only really needed if you comment out the use of blead's makedepend.SH
917 local @ARGV = qw(makefile x2p/makefile);
919 print unless /<(?:built-in|command|stdin)/;
923 if ($major == 2 && extract_from_file('perl.c', qr/^ fclose\(e_fp\);$/)) {
924 # need to patch perl.c to avoid calling fclose() twice on e_fp when using -e
925 # This diff is part of commit ab821d7fdc14a438. The second close was
926 # introduced with perl-5.002, commit a5f75d667838e8e7
927 # Might want a6c477ed8d4864e6 too, for the corresponding change to pp_ctl.c
928 # (likely without this, eval will have "fun")
929 apply_patch(<<'EOPATCH');
930 diff --git a/perl.c b/perl.c
931 index 03c4d48..3c814a2 100644
934 @@ -252,6 +252,7 @@ setuid perl scripts securely.\n");
935 #ifndef VMS /* VMS doesn't have environ array */
936 origenviron = environ;
938 + e_tmpname = Nullch;
942 @@ -405,6 +406,7 @@ setuid perl scripts securely.\n");
944 if (Fflush(e_fp) || ferror(e_fp) || fclose(e_fp))
945 croak("Can't write to temp file for -e: %s", Strerror(errno));
948 scriptname = e_tmpname;
950 @@ -470,10 +472,10 @@ setuid perl scripts securely.\n");
951 curcop->cop_line = 0;
958 (void)UNLINK(e_tmpname);
959 + Safefree(e_tmpname);
960 + e_tmpname = Nullch;
963 /* now that script is parsed, we can modify record separator */
964 @@ -1369,7 +1371,7 @@ SV *sv;
968 - origfilename = savepv(e_fp ? "-e" : scriptname);
969 + origfilename = savepv(e_tmpname ? "-e" : scriptname);
970 curcop->cop_filegv = gv_fetchfile(origfilename);
971 if (strEQ(origfilename,"-"))
977 if ($major < 10 and -f 'ext/IPC/SysV/SysV.xs') {
978 edit_file('ext/IPC/SysV/SysV.xs', sub {
980 my $fixed = <<'EOFIX';
982 #include <sys/types.h>
983 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
985 # include <sys/ipc.h>
988 # include <sys/msg.h>
991 # if defined(PERL_SCO) || defined(PERL_ISC)
992 # include <sys/sysmacros.h> /* SHMLBA */
994 # include <sys/shm.h>
995 # ifndef HAS_SHMAT_PROTOTYPE
996 extern Shmat_t shmat (int, char *, int);
998 # if defined(HAS_SYSCONF) && defined(_SC_PAGESIZE)
999 # undef SHMLBA /* not static: determined at boot time */
1000 # define SHMLBA sysconf(_SC_PAGESIZE)
1001 # elif defined(HAS_GETPAGESIZE)
1002 # undef SHMLBA /* not static: determined at boot time */
1003 # define SHMLBA getpagesize()
1009 #include <sys/types\.h>
1011 (#ifdef newCONSTSUB|/\* Required)!$fixed$1!ms;
1016 # Parallel build for miniperl is safe
1017 system "make $j miniperl </dev/null";
1019 my $expected = $target =~ /^test/ ? 't/perl'
1020 : $target eq 'Fcntl' ? "lib/auto/Fcntl/Fcntl.$Config{so}"
1022 my $real_target = $target eq 'Fcntl' ? $expected : $target;
1024 if ($target ne 'miniperl') {
1025 # Nearly all parallel build issues fixed by 5.10.0. Untrustworthy before that.
1026 $j = '' if $major < 10;
1028 if ($real_target eq 'test_prep') {
1030 # test-prep was added in 5.004_01, 3e3baf6d63945cb6.
1031 # renamed to test_prep in 2001 in 5fe84fd29acaf55c.
1032 # earlier than that, just make test. It will be fast enough.
1033 $real_target = extract_from_file('Makefile.SH',
1034 qr/^(test[-_]prep):/,
1039 system "make $j $real_target </dev/null";
1042 my $missing_target = $expected =~ /perl$/ ? !-x $expected : !-r $expected;
1044 if ($options{'test-build'}) {
1045 report_and_exit($missing_target, 'could build', 'could not build',
1047 } elsif ($missing_target) {
1048 skip("could not build $real_target");
1051 match_and_exit($real_target) if $match;
1053 if (defined $options{'one-liner'}) {
1054 my $exe = $target =~ /^(?:perl$|test)/ ? 'perl' : 'miniperl';
1055 unshift @ARGV, "./$exe", '-Ilib', '-e', $options{'one-liner'};
1058 # This is what we came here to run:
1059 my $ret = system @ARGV;
1061 report_and_exit($ret, 'zero exit from', 'non-zero exit from', "@ARGV");
1064 # cperl-indent-level: 4
1065 # indent-tabs-mode: nil
1068 # ex: set ts=8 sts=4 sw=4 et: