lib/mkmf.rb: sort list of object files in generated Makefile

Without sorting the list explicitely, its order is indeterministic,
because readdir() is also not deterministic.
When the list of object files varies between builds, they are linked
in a different order, which results in an unreproducible build.

Signed-off-by: Antonio Terceiro <terceiro@debian.org>
Signed-off-by: Reiner Herrmann <reiner@reiner-h.de>
Gbp-Pq: Name 0002-lib-mkmf.rb-sort-list-of-object-files-in-generated-M.patch

diff --git a/lib/mkmf.rb b/lib/mkmf.rb
index 7f53bb4b97260fb0a6934fe897a3a0da86ee3a82..7219ab95e19bd00385f9a333f60944b6087a4afa 100644 (file)
--- a/lib/mkmf.rb
+++ b/lib/mkmf.rb
@@ -2283,7 +2283,7 @@ LOCAL_LIBS = #{$LOCAL_LIBS}
 LIBS = #{$LIBRUBYARG} #{$libs} #{$LIBS}
 ORIG_SRCS = #{orig_srcs.collect(&File.method(:basename)).join(' ')}
 SRCS = $(ORIG_SRCS) #{(srcs - orig_srcs).collect(&File.method(:basename)).join(' ')}
-OBJS = #{$objs.join(" ")}
+OBJS = #{$objs.sort.join(" ")}
 HDRS = #{hdrs.map{|h| '$(srcdir)/' + File.basename(h)}.join(' ')}
 LOCAL_HDRS = #{$headers.join(' ')}
 TARGET = #{target}