build: don't leave git_sha1.h.tmp after build/install

Fixes "`main/git_sha1.h.tmp': Permission denied" build error.
See https://bugs.freedesktop.org/show_bug.cgi?id=52064

Signed-off-by: Vadim Girlin <vadimgirlin@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>

diff --git a/src/mesa/Makefile.am b/src/mesa/Makefile.am
index 3b5ef24c0edc59f9018b59bd5023909e89cc6811..1ac64e64df2997b3d18e37aa30e146d2a07adf37 100644 (file)
--- a/src/mesa/Makefile.am
+++ b/src/mesa/Makefile.am
@@ -39,6 +39,8 @@ main/git_sha1.h: main/git_sha1.h.tmp
        @echo "updating main/git_sha1.h"
        @if ! cmp -s main/git_sha1.h.tmp main/git_sha1.h; then \
                mv main/git_sha1.h.tmp main/git_sha1.h ;\
+       else \
+               rm main/git_sha1.h.tmp ;\
        fi
 
 # include glapi_gen.mk for generating glapi headers for GLES