From: Gisle Aas <gisle@aas.no>
Date: Tue, 2 Mar 2010 19:42:39 +0000 (+0100)
Subject: Only define PERL_PATCHNUM when either git or the .patch file is available
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=691ce773f92d2810db171a8ff46c3dd0196abfb5;hp=bfc37ff708b737d2490a23505b932c94f1898073;p=p5sagit%2Fp5-mst-13.2.git

Only define PERL_PATCHNUM when either git or the .patch file is available

This patch also make PERL_GIT_UNCOMMITTED_CHANGES useful and thus avoids
always adding the "*" to the 'perl -v' output.
---

diff --git a/make_patchnum.pl b/make_patchnum.pl
index 28148de..ac32808 100644
--- a/make_patchnum.pl
+++ b/make_patchnum.pl
@@ -93,7 +93,7 @@ sub backtick {
     my $command = shift;
     if (wantarray) {
         my @result= `$subcd $command`;
-        warn "$subcd $command: \$?=$?\n" if $?;
+        #warn "$subcd $command: \$?=$?\n" if $?;
         print "#> $subcd $command ->\n @result\n" if !$? and $opt_v;
         chomp @result;
         return @result;
@@ -122,9 +122,9 @@ sub write_files {
     return 0;
 }
 
-my $unpushed_commits = '/*no-op*/';
+my $unpushed_commits = '    ';
 my ($read, $branch, $snapshot_created, $commit_id, $describe)= ("") x 5;
-my ($changed, $extra_info, $commit_title, $new_patchnum, $status)= ("") x 5;
+my ($changed, $extra_info, $commit_title)= ("") x 3;
 
 if (my $patch_file= read_file(".patch")) {
     ($branch, $snapshot_created, $commit_id, $describe) = split /\s+/, $patch_file;
@@ -145,8 +145,14 @@ elsif (-d "$srcdir/.git") {
     $commit_id = backtick("git rev-parse HEAD");
     $describe = backtick("git describe");
     my $commit_created = backtick(qq{git log -1 --pretty="format:%ci"});
-    $new_patchnum = "describe: $describe";
     $extra_info = "git_commit_date='$commit_created'";
+    backtick("git diff --no-ext-diff --quiet --exit-code");
+    $changed = $?;
+    unless ($changed) {
+        backtick("git diff-index --cached --quiet HEAD --");
+        $changed = $?;
+    }
+
     if (length $branch && length $remote) {
         # git cherry $remote/$branch | awk 'BEGIN{ORS=","} /\+/ {print $2}' | sed -e 's/,$//'
         my $unpushed_commit_list =
@@ -165,12 +171,8 @@ git_remote_branch='$remote/$merge'
 git_unpushed='$unpushed_commit_list'";
         }
     }
-    if ($changed) { # not touched since init'd. never true.
-        $changed = 'true';
+    if ($changed) {
         $commit_title =  "Derived from:";
-        $status='"uncommitted-changes"'
-    } else {
-        $status='/*clean-working-directory-maybe*/'
     }
     $commit_title ||= "Commit id:";
 }
@@ -181,10 +183,10 @@ write_files(<<"EOF_HEADER", <<"EOF_CONFIG");
 * WARNING: 'git_version.h' is automatically generated by make_patchnum.pl
 *          DO NOT EDIT DIRECTLY - edit make_patchnum.pl instead
 ***************************************************************************/
-#define PERL_GIT_UNCOMMITTED_CHANGES $status
-#define PERL_PATCHNUM "$describe"
+@{[$describe ? "#define PERL_PATCHNUM \"$describe\"" : ()]}
 #define PERL_GIT_UNPUSHED_COMMITS\t\t\\
 $unpushed_commits/*leave-this-comment*/
+@{[$changed ? "#define PERL_GIT_UNCOMMITTED_CHANGES" : ()]}
 EOF_HEADER
 ######################################################################
 # WARNING: 'lib/Config_git.pl' is generated by make_patchnum.pl
diff --git a/patchlevel.h b/patchlevel.h
index 1d4a98b..31eedf0 100644
--- a/patchlevel.h
+++ b/patchlevel.h
@@ -118,19 +118,19 @@ hunk.
 #if !defined(PERL_PATCHLEVEL_H_IMPLICIT) && !defined(LOCAL_PATCH_COUNT)
 #  if defined(PERL_IS_MINIPERL)
 #    define PERL_PATCHNUM "UNKNOWN-miniperl"
-#    define PERL_GIT_UNCOMMITTED_CHANGES ,"UNKNOWN"
 #    define PERL_GIT_UNPUSHED_COMMITS /*leave-this-comment*/
 #  elif defined(PERL_MICRO)
 #    define PERL_PATCHNUM "UNKNOWN-microperl"
-#    define PERL_GIT_UNCOMMITTED_CHANGES ,"UNKNOWN"
 #    define PERL_GIT_UNPUSHED_COMMITS /*leave-this-comment*/
 #  else
 #include "git_version.h"
 #  endif
 static const char * const local_patches[] = {
 	NULL
+#ifdef PERL_GIT_UNCOMMITTED_CHANGES
+	,"uncommitted-changes"
+#endif
 	PERL_GIT_UNPUSHED_COMMITS    	/* do not remove this line */
-        PERL_GIT_UNCOMMITTED_CHANGES	/* do not remove this line */
 	,NULL
 };
 
diff --git a/utils/perlbug.PL b/utils/perlbug.PL
index c015e25..2fe3c59 100644
--- a/utils/perlbug.PL
+++ b/utils/perlbug.PL
@@ -42,7 +42,7 @@ while (<PATCH_LEVEL>) {
     last if /^\s*}/;
     next if /^\s*#/;  # preprocessor stuff
     next if /PERL_GIT_UNPUSHED_COMMITS/;    # XXX expand instead
-    next if /PERL_GIT_UNCOMMITTED_CHANGES/; # XXX expand instead
+    next if /"uncommitted-changes"/;        # XXX determine if active instead
     chomp;
     s/^\s+,?\s*"?//;
     s/"?\s*,?$//;