darwin universal builds need BUILD_PFX

Universal builds create subdirectories for each target. Without
BUILD_PFX we only generated one vpx_rtcd.h instead of one for each.

Change-Id: I1caed4e018c8865ffc8da15e434cae2b96154fb4

diff --git a/libs.mk b/libs.mk
index b77276e1bb1323c1f58cd53475f1af647030d86f..5889a88b7c77620470e4f88ad789b82359594299 100644 (file)
--- a/libs.mk
+++ b/libs.mk
@@ -329,8 +329,8 @@ CLEAN-OBJS += $(BUILD_PFX)vpx_version.h
 #
 # Rule to generate runtime cpu detection files
 #
-$(OBJS-yes:.o=.d): vpx_rtcd.h
-vpx_rtcd.h: $(SRC_PATH_BARE)/$(sort $(filter %rtcd_defs.sh,$(CODEC_SRCS)))
+$(OBJS-yes:.o=.d): $(BUILD_PFX)vpx_rtcd.h
+$(BUILD_PFX)vpx_rtcd.h: $(SRC_PATH_BARE)/$(sort $(filter %rtcd_defs.sh,$(CODEC_SRCS)))
        @echo "    [CREATE] $@"
        $(qexec)$(SRC_PATH_BARE)/build/make/rtcd.sh --arch=$(TGT_ISA) \
           --sym=vpx_rtcd \