diff --git a/src/gallium/winsys/nouveau/drm/Android.mk b/src/gallium/winsys/nouveau/drm/Android.mk
index 93c540bcaee..2e2a9d12d36 100644
--- a/src/gallium/winsys/nouveau/drm/Android.mk
+++ b/src/gallium/winsys/nouveau/drm/Android.mk
@@ -23,8 +23,8 @@
 
 LOCAL_PATH := $(call my-dir)
 
-# from Makefile
-C_SOURCES = nouveau_drm_winsys.c
+# get C_SOURCES
+include $(LOCAL_PATH)/Makefile.sources
 
 include $(CLEAR_VARS)
 
diff --git a/src/gallium/winsys/nouveau/drm/Makefile.am b/src/gallium/winsys/nouveau/drm/Makefile.am
index 14488779b9d..f9645f56944 100644
--- a/src/gallium/winsys/nouveau/drm/Makefile.am
+++ b/src/gallium/winsys/nouveau/drm/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_CFLAGS = \
@@ -30,4 +31,4 @@ AM_CFLAGS = \
 
 noinst_LTLIBRARIES = libnouveaudrm.la
 
-libnouveaudrm_la_SOURCES = nouveau_drm_winsys.c
+libnouveaudrm_la_SOURCES = $(C_SOURCES)
diff --git a/src/gallium/winsys/nouveau/drm/Makefile.sources b/src/gallium/winsys/nouveau/drm/Makefile.sources
new file mode 100644
index 00000000000..43b8e8679ac
--- /dev/null
+++ b/src/gallium/winsys/nouveau/drm/Makefile.sources
@@ -0,0 +1,2 @@
+C_SOURCES := \
+	nouveau_drm_winsys.c