configure: Break when asciidoc cannot be found

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

diff --git a/configure.ac b/configure.ac
index 117850f08b2b4bec987e03d4436eac611ce7a4c6..340cfd605af683027bf3671b877db2c20cef1aa1 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -144,6 +144,9 @@ PKG_CHECK_MODULES([LIBNL], [libnl-3.0 libnl-genl-3.0])
 # ------------------------------------------------------------------------------
 
 AC_CHECK_PROGS(ASCIIDOC, [asciidoc])
+if test -z "${ASCIIDOC}"; then
+       AC_MSG_ERROR([Required program 'asciidoc' not found])
+fi
 
 # ------------------------------------------------------------------------------