diff options
| -rw-r--r-- | configure.ac | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 53e9c69..c8ccbde 100644 --- a/configure.ac +++ b/configure.ac @@ -35,6 +35,8 @@ XORG_DEFAULT_OPTIONS AC_PROG_LEX AC_PROG_YACC +AC_PATH_PROG([YACC_INST], $YACC) +test -z "$YACC_INST" && AC_MSG_ERROR([yacc not found - unable to compile gram.y]) AC_PROG_CC AC_PROG_INSTALL |