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-rw-r--r--configure.ac7
1 files changed, 5 insertions, 2 deletions
diff --git a/configure.ac b/configure.ac
index ef9c4b4..b590e57 100644
--- a/configure.ac
+++ b/configure.ac
@@ -36,8 +36,11 @@ XORG_DEFAULT_OPTIONS
AC_PROG_YACC
AC_PATH_PROG([YACC_INST], $YACC)
-AC_CHECK_FILE([$srcdir/gram.c], [],
- [test -z "$YACC_INST" && AC_MSG_ERROR([yacc not found - unable to compile gram.y])])
+if test ! -f "$srcdir/gram.c"; then
+ if test -z "$YACC_INST"; then
+ AC_MSG_ERROR([yacc not found - unable to compile gram.y])
+ fi
+fi
AC_PROG_LEX
AC_CHECK_FUNCS([mkstemp])