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-rw-r--r--configure.ac3
1 files changed, 2 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac
index 3ad342c..dbda296 100644
--- a/configure.ac
+++ b/configure.ac
@@ -36,7 +36,8 @@ AM_CONFIG_HEADER(config.h)
AC_PROG_CC
AC_PROG_YACC
AC_PATH_PROG([YACC_INST], $YACC)
-test -z "$YACC_INST" && AC_MSG_ERROR([yacc not found - unable to compile xkbparse.y])
+AC_CHECK_FILE([$srcdir/xkbparse.c], [],
+ [test -z "$YACC_INST" && AC_MSG_ERROR([yacc not found - unable to compile xkbparse.y])])
AC_PROG_INSTALL