autoconf: Error for incompatible version of libdrm
The DRI modules can only be built against libdrm master (currently
version 2.3.1), so this should be enforced to save people from trying to
build against older versions.
Added a section at the top of the script to consolidate all required
versions.
diff --git a/configure.ac b/configure.ac
index ca63c7e..bc2ebf6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -17,6 +17,10 @@
AC_CONFIG_AUX_DIR([bin])
AC_CANONICAL_HOST
+dnl Versions for external dependencies
+LIBDRM_REQUIRED=2.3.1
+DRI2PROTO_REQUIRED=1.1
+
dnl Check for progs
AC_PROG_CPP
AC_PROG_CC
@@ -404,8 +408,8 @@
fi
# Check for libdrm
- PKG_CHECK_MODULES([LIBDRM], [libdrm])
- PKG_CHECK_MODULES([DRI2PROTO], [dri2proto >= 1.1])
+ PKG_CHECK_MODULES([LIBDRM], [libdrm >= $LIBDRM_REQUIRED])
+ PKG_CHECK_MODULES([DRI2PROTO], [dri2proto >= $DRI2PROTO_REQUIRED])
# find the DRI deps for libGL
if test "$x11_pkgconfig" = yes; then