st/dri: unwrap/remove __NOT_HAVE_DRM_H magic

With the dri_interface.h clean of the macro, we can remove the final
only st/dri specific use of the very same.

Seemingly it was incorrectly used, as the build-time presence of dri2 is
not libdrm specific. At run-time, the code is already limited to dri2
use-cases plus returning true, when the extension is not present (or too
old) will likely lead to a crash as one tries to use it shortly after
the dri_with_format() call.

As a side effect this gives us a nice cleanup the builds.

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>

src/gallium/state_trackers/dri/Android.mk

@@ -48,10 +48,7 @@ LOCAL_CFLAGS += -DGALLIUM_SOFTPIPE
 LOCAL_SRC_FILES += $(drisw_SOURCES)
 endif
 
-# swrast only?
-ifeq ($(MESA_GPU_DRIVERS),swrast)
-LOCAL_CFLAGS += -D__NOT_HAVE_DRM_H
-else
+ifneq ($(filter-out swrast,$(MESA_GPU_DRIVERS)),)
 LOCAL_SRC_FILES += $(dri2_SOURCES)
 LOCAL_SHARED_LIBRARIES := libdrm
 endif

src/gallium/state_trackers/dri/Makefile.am

@@ -50,10 +50,6 @@ noinst_LTLIBRARIES = libdri.la
 libdri_la_SOURCES = $(common_SOURCES)
 
 if HAVE_DRISW
-if !HAVE_DRI2
-AM_CPPFLAGS += \
-	-D__NOT_HAVE_DRM_H
-endif
 libdri_la_SOURCES += $(drisw_SOURCES)
 endif
 

src/gallium/state_trackers/dri/SConscript

@@ -5,10 +5,7 @@ Import('*')
 
 env = env.Clone()
 
-# XXX: If HAVE_DRI2
 env.PkgUseModules(['DRM'])
-# else
-#env.Append(CPPDEFINES = [('__NOT_HAVE_DRM_H', '1')])
 
 env.Append(CPPPATH = [
     '#/src',

src/gallium/state_trackers/dri/dri_screen.h

@@ -122,8 +122,6 @@ struct __DRIimageRec {
 
 };
 
-#ifndef __NOT_HAVE_DRM_H
-
 static inline boolean
 dri_with_format(__DRIscreen * sPriv)
 {
@@ -134,16 +132,6 @@ dri_with_format(__DRIscreen * sPriv)
        && (loader->getBuffersWithFormat != NULL);
 }
 
-#else
-
-static inline boolean
-dri_with_format(__DRIscreen * sPriv)
-{
-   return TRUE;
-}
-
-#endif
-
 void
 dri_fill_st_visual(struct st_visual *stvis, struct dri_screen *screen,
                    const struct gl_config *mode);