configure.ac: Make --{without,with}-gallium-drivers work as expected
This version is mostly Dan's post to the mesa-dev mailing list on
6/22/2011.
NOTE: This is a candidate for the 7.10 and 7.11 branches.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Dan Nicholson <dbn.lists@gmail.com>
diff --git a/configure.ac b/configure.ac
index 6a5bb37..7737273 100644
--- a/configure.ac
+++ b/configure.ac
@@ -617,6 +617,13 @@
[with_gallium_drivers="$withval"],
[with_gallium_drivers="$GALLIUM_DRIVERS_DEFAULT"])
+# Doing '--without-gallium-drivers' will set this variable to 'no'. Clear it
+# here so that the script doesn't choke on an unknown driver name later.
+case "$with_gallium_drivers" in
+ yes) with_gallium_drivers="$GALLIUM_DRIVERS_DEFAULT" ;;
+ no) with_gallium_drivers='' ;;
+esac
+
if test "x$enable_opengl" = xno -a \
"x$enable_gles1" = xno -a \
"x$enable_gles2" = xno -a \