Fix for SCM detection

diff --git a/src/Makefile.am b/src/Makefile.am
index b505750d4e13e8d133328940e6c7e5a456cf390e..1dbf7745165d34e3d775c8508590f62ae51ee992 100644 (file)
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -137,7 +137,7 @@ gitinfo: gitinfo.tmp
 # .PHONY ensures the .tmp version is always rebuilt (to check for any changes)
 .PHONY: gitinfo.tmp
 gitinfo.tmp:
-       $(AM_V_GEN)(cd "$(top_srcdir)"; if ! grep -q '^ref: refs/heads/' .git/HEAD; then echo; fi; sed 's,^ref: refs/heads/,,' .git/HEAD; git show-ref refs/heads/`sed 's,^ref: refs/heads/,,' .git/HEAD`; echo "Modifications: `test -z \"\`git status -s -uno\`\" && echo false || echo true`") >"$@" 2>/dev/null || true
+       $(AM_V_GEN)(cd "$(top_srcdir)"; if test -e .git/HEAD; then if ! grep -q '^ref: refs/heads/' .git/HEAD; then echo; fi; sed 's,^ref: refs/heads/,,' .git/HEAD; git show-ref refs/heads/`sed 's,^ref: refs/heads/,,' .git/HEAD`; echo "Modifications: `test -z \"\`git status -s -uno\`\" && echo false || echo true`"; fi) >"$@" 2>/dev/null || true
 
 install-data-local:
        (echo include/cvc4.h; \