bisect-runner.pl now fixes some 5.11-era parallel make bugs.

bisect-runner.pl now patches Makefile.SH with correct dependencies for the
first iteration of incorporating the git version in perl -V output by
writing the files .patchnum or unpushed.h.

This era is important because contains the commit that merges Schwern's y2038
work, which is likely to be significant for some testcases.

diff --git a/Porting/bisect-runner.pl b/Porting/bisect-runner.pl
index fea722b..ffcb285 100755 (executable)
--- a/Porting/bisect-runner.pl
+++ b/Porting/bisect-runner.pl
@@ -1634,6 +1634,61 @@ index f61d0db..6097954 100644
  
 EOPATCH
         }
+
+        if ($major == 11) {
+            if (extract_from_file('patchlevel.h',
+                                  qr/^#include "unpushed\.h"/)) {
+                # I had thought it easier to detect when building one of the 52
+                # commits with the original method of incorporating the git
+                # revision and drop parallel make flags. Commits shown by
+                # git log 46807d8e809cc127^..dcff826f70bf3f64^ ^d4fb0a1f15d1a1c4
+                # However, it's not actually possible to make miniperl for that
+                # configuration as-is, because the file .patchnum is only made
+                # as a side effect of target 'all'
+                # I also don't think that it's "safe" to simply run
+                # make_patchnum.sh before the build. We need the proper
+                # dependency rules in the Makefile to *stop* it being run again
+                # at the wrong time.
+                # This range is important because contains the commit that
+                # merges Schwern's y2038 work.
+                apply_patch(<<'EOPATCH');
+diff --git a/Makefile.SH b/Makefile.SH
+index 9ad8b6f..106e721 100644
+--- a/Makefile.SH
++++ b/Makefile.SH
+@@ -540,9 +544,14 @@ sperl.i: perl.c $(h)
+ 
+ .PHONY: all translators utilities make_patchnum
+ 
+-make_patchnum:
++make_patchnum: lib/Config_git.pl
++
++lib/Config_git.pl: make_patchnum.sh
+       sh $(shellflags) make_patchnum.sh
+ 
++# .patchnum, unpushed.h and lib/Config_git.pl are built by make_patchnum.sh
++unpushed.h .patchnum: lib/Config_git.pl
++
+ # make sure that we recompile perl.c if .patchnum changes
+ perl$(OBJ_EXT): .patchnum unpushed.h
+ 
+EOPATCH
+            } elsif (-f '.gitignore'
+                     && extract_from_file('.gitignore', qr/^\.patchnum$/)) {
+                # 8565263ab8a47cda to 46807d8e809cc127^ inclusive.
+                edit_file('Makefile.SH', sub {
+                              my $code = shift;
+                              $code =~ s/^make_patchnum:\n/make_patchnum: .patchnum
+
+.sha1: .patchnum
+
+.patchnum: make_patchnum.sh
+/m;
+                              return $code;
+                          });
+            }
+        }
+
         if ($major < 14) {
             # Commits dc0655f797469c47 and d11a62fe01f2ecb2
             edit_file('Makefile.SH', sub {