[PATCH wayland] configure: Depend on a more strict version of publican

[Tiago Vignatti]

Fix https://bugs.freedesktop.org/show_bug.cgi?id=56101

Signed-off-by: Tiago Vignatti <tiago.vignatti at intel.com>
---
 configure.ac |    8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/configure.ac b/configure.ac
index 1c102c6..1a10cf8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -86,6 +86,14 @@ if test "x$enable_documentation" = "xyes"; then
 
 	AC_PATH_PROG(PUBLICAN, publican)
 
+	if test "x$PUBLICAN" != "x"; then
+		PUBLICAN_VERSION=`$PUBLICAN -v | cut -d'=' -f2`
+
+		if test [ 1 -eq `echo "${PUBLICAN_VERSION} < 2.8" | bc` ]; then
+			AC_MSG_ERROR([Publican version is not supported. Install publican >= 2.8 or disable the documentation using --disable-documentation])
+		fi
+	fi
+
 	AC_CONFIG_FILES([
 	doc/doxygen/wayland.doxygen
 	])
-- 
1.7.9.5