if git rev-parse HEAD 2>/dev/null >/dev/null; then
AC_SUBST([PACKAGE_VERSION], [$PACKAGE_VERSION-git-`git rev-parse --short HEAD`])
fi
if git rev-parse HEAD 2>/dev/null >/dev/null; then
AC_SUBST([PACKAGE_VERSION], [$PACKAGE_VERSION-git-`git rev-parse --short HEAD`])
fi