build: Error if glib isn't found

This is a bit extracted from my work on ASAN.

Closes: #625
Approved by: jlebon

diff --git a/configure.ac b/configure.ac
index ff27b0a06dac36c7d75e6adfb750073a209f7dc1..4e004ca6be649b257346b0c6c55e30280ee8f21e 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -53,7 +53,7 @@ AS_IF([test "$YACC" != "bison -y"], [AC_MSG_ERROR([bison not found but required]
 
 PKG_PROG_PKG_CONFIG
 
-AM_PATH_GLIB_2_0
+AM_PATH_GLIB_2_0(,,AC_MSG_ERROR([GLib not found]))
 
 dnl When bumping the gio-unix-2.0 dependency (or glib-2.0 in general),
 dnl remember to bump GLIB_VERSION_MIN_REQUIRED and