Revise the build-ignore script for git:

1. remove the "die if not dual repo" and automatic "git add" for the .gitignore as we might want to run this script outside of a dual repo.

2. put the results in a single .gitignore file at the top so it mimics the mercurial script and is easier to copy to a git repo

3. don't prefix the entries with "./" as git doesn't recognize the entry if you do

This commit was SVN r28148.

contrib/git/build-gitignore.pl

@@ -7,13 +7,11 @@
 
 use strict;
 
-# Sanity check
-die "Not in Git+SVN repository top dir"
-    if (! -d ".git" && ! -d ".svn");
-
 # Put in some specials that we ignore everywhere
 my @globals = qw/.libs
 .deps
+.libs
+.svn
 *.la
 *.lo
 *.o
@@ -29,6 +27,9 @@ my @globals = qw/.libs
 *.xcscheme
 *.plist
 *~
+Makefile
+Makefile.in
+static-components.h
 *\\\#/;
 unshift(@globals, "# Automatically generated by build-gitignore.pl; edits may be lost!");
 
@@ -36,12 +37,21 @@ my $debug;
 $debug = 1
     if ($ARGV[0]);
 
+open(OUT, ">.gitignore");
+
+# add the globals */
+foreach my $val (@globals) {
+    print OUT "$val\n";
+}
+
 print "Thinking...\n"
     if (!$debug);
 
 # Start at the top level
 process(".");
 
+close(OUT);
+
 # Done!
 exit(0);
 
@@ -50,6 +60,8 @@ exit(0);
 # DFS-oriented recursive directory search
 sub process {
     my $dir = shift;
+    my $outdir = $dir;
+    $outdir =~ s/^\.\///;
 
     # Look at the svn:ignore property for this directory
     my $svn_ignore = `svn pg svn:ignore $dir 2> /dev/null`;
@@ -62,7 +74,7 @@ sub process {
         print "Found svn:ignore in $dir\n"
             if ($debug);
 
-        my @git = @globals;
+        my @git;
 
         # See if there's an .gitignore_local file.  If so, add its
         # contents to the end.
@@ -103,19 +115,14 @@ sub process {
         }
 
         # Write out a new .gitignore file
-        unlink("$dir/.gitignore");
-        open(OUT, ">$dir/.gitignore") || die "Can't open .gitignore file";
         foreach my $val (@git) {
-            print OUT "$val\n";
+            if ($outdir eq ".") {
+                print OUT "$val\n";
+            } else {
+                print OUT "$outdir/$val\n";
+            }
         }
 
-        # Ignore the .svn dir if that directory exists
-        print OUT ".svn\n"
-            if (-d "$dir/.svn");
-        close(OUT);
-
-        # Git add this .gitignore file
-        system("git add $dir/.gitignore");
     }
         
     # Now find subdirectories in this directory