Add a new config called linux-indirect. This build the GLX libGL just like
linux-dri, but it disables support for direct-rendering in it. This config
mainly exists so that I can verify that changes to libGL haven't broken
builds on non-DRI platforms.
diff --git a/configs/freebsd-dri b/configs/freebsd-dri
index 7d811a5..090f3d6 100644
--- a/configs/freebsd-dri
+++ b/configs/freebsd-dri
@@ -13,7 +13,8 @@
EXPAT_INCLUDES = -I/usr/local/include
X11_INCLUDES = -I/usr/X11R6/include -I/usr/X11R6/include/X11/extensions
-DEFINES = -DPTHREADS -DUSE_EXTERNAL_DXTN_LIB=1 -DIN_DRI_DRIVER
+DEFINES = -DPTHREADS -DUSE_EXTERNAL_DXTN_LIB=1 -DIN_DRI_DRIVER \
+ -DGLX_DIRECT_RENDERING
CFLAGS = $(DEFINES) -Wmissing-prototypes -g -std=c99 -Wundef -fPIC \
-ffast-math $(X11_INCLUDES)
CXXFLAGS = $(DEFINES) -Wall -g -ansi -pedantic -fPIC