1 files changed, 5 insertions, 1 deletions

diff --git a/src/Makefile.am b/src/Makefile.am
index 382d41a..235193d 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -77,7 +77,11 @@ defaults.cc: force
                 echo '}'; \
                 echo ''; \
                 echo 'const char* gitrevision() {'; \
-                echo '  return "'`cat $$GITDIR/$$(cat $$GITDIR/HEAD | cut -f 2 -d ' ')`'";';\
+                if test -r $$GITDIR/HEAD; then \
+                        echo '  return "'`cat $$GITDIR/$$(cat $$GITDIR/HEAD | cut -f 2 -d ' ')`'";'; \
+                else \
+                        echo '  return "this_is_tar_ball_build";'; \
+                fi; \
                 echo '}' ) > defaults_tmp.cc
         @if ! cmp defaults_tmp.cc defaults.cc ; then cp defaults_tmp.cc defaults.cc; fi
         @rm defaults_tmp.cc