st/dri/sw: consolidate C sources list into Makefile.sources

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Reviewed-by: Tom Stellard <thomas.stellard@amd.com>

src/gallium/state_trackers/dri/sw/Makefile.am

@@ -20,6 +20,7 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 # DEALINGS IN THE SOFTWARE.
 
+include Makefile.sources
 include $(top_srcdir)/src/gallium/Automake.inc
 
 AM_CPPFLAGS = \
@@ -34,8 +35,4 @@ AM_CPPFLAGS = \
 
 noinst_LTLIBRARIES = libdrisw.la
 
-libdrisw_la_SOURCES = \
-	dri_context.c \
-	dri_screen.c \
-	dri_drawable.c \
-	drisw.c
+libdrisw_la_SOURCES =  $(C_SOURCES)

src/gallium/state_trackers/dri/sw/Makefile.sources

@@ -0,0 +1,5 @@
+C_SOURCES := \
+	dri_context.c \
+	dri_screen.c \
+	dri_drawable.c \
+	drisw.c

src/gallium/state_trackers/dri/sw/SConscript

@@ -15,15 +15,8 @@ env.Append(CPPPATH = [
 
 env.Append(CPPDEFINES = [('__NOT_HAVE_DRM_H', '1')])
 
-sources = [
-    'dri_context.c',
-    'dri_drawable.c',
-    'dri_screen.c',
-    'drisw.c',
-]
-
 st_drisw = env.ConvenienceLibrary(
     target = 'st_drisw',
-    source = sources,
+    source = env.ParseSourceList('Makefile.sources', 'C_SOURCES')
 )
 Export('st_drisw')