build: Make autoreconf honour ACLOCAL_FLAGS

When running autoreconf, it's possible to give flags to the underlying
aclocal by declaring a ACLOCAL_AMFLAGS variable in the top level
Makefile.am.

Putting ${ACLOCAL_FLAGS} there allows the user to set an environment
variable up before running autogen.sh and pull in the right directories
to look for m4 macros, say an up-to-date version of the xorg-util macros.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>

diff --git a/Makefile.am b/Makefile.am
index 6cd724c..5ea0fd8 100644 (file)
--- a/Makefile.am
+++ b/Makefile.am
@@ -19,6 +19,8 @@
 #  IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 #  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
+ACLOCAL_AMFLAGS = ${ACLOCAL_FLAGS}
+
 SUBDIRS = lib man tools scripts tests benchmarks demos
 
 if BUILD_SHADER_DEBUGGER