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-rw-r--r--configure.ac4
1 files changed, 2 insertions, 2 deletions
diff --git a/configure.ac b/configure.ac
index a04d94bc..3496e410 100644
--- a/configure.ac
+++ b/configure.ac
@@ -29,13 +29,13 @@ AC_PROG_SED
AM_PROG_LEX
AC_PROG_YACC
-if test -z "$ac_cv_prog_YACC"
+if test -z "$ac_cv_prog_YACC" -a ! -f "${srcdir}/src/parser_bison.c"
then
echo "*** Error: No suitable bison/yacc found. ***"
echo " Please install the 'bison' package."
exit 1
fi
-if test -z "$ac_cv_prog_LEX"
+if test -z "$ac_cv_prog_LEX" -a ! -f "${srcdir}/src/scanner.c"
then
echo "*** Error: No suitable flex/lex found. ***"
echo " Please install the 'flex' package."