From 88770a3c3daba517114dea7cd263936b7a5a3ea5 Mon Sep 17 00:00:00 2001
From: Chih-Wei Huang <cwhuang@linux.org.tw>
Date: Thu, 6 Apr 2017 18:33:57 +0800
Subject: [PATCH] android: fix the rules to generate intel_version.h

Android source tree has to be read-only. The generated files should
be put to the $(OUT)/gen/ dir. Rewrite the makefile to be compliant
with the rules.

Signed-off-by: Chih-Wei Huang <cwhuang@linux.org.tw>
(cherry picked from commit a177751246b8d57aa6223060415fa4824b7cebf1)
---
 src/Android.mk | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/src/Android.mk b/src/Android.mk
index 1fbb773..b64f6d1 100644
--- a/src/Android.mk
+++ b/src/Android.mk
@@ -75,19 +75,21 @@ LOCAL_SRC_FILES :=              \
 	intel_media_common.c		\
 	$(NULL)
 
-GEN := $(LOCAL_PATH)/intel_version.h
-$(GEN): SCRIPT := $(LOCAL_PATH)/../build/gen_version.sh
-$(GEN): PRIVATE_PATH := $(LOCAL_PATH)
-$(GEN): PRIVATE_CUSTOM_TOOL = sh $(SCRIPT) $(PRIVATE_PATH)/.. $(PRIVATE_PATH) > $@
-$(GEN): $(LOCAL_PATH)/%.h : $(LOCAL_PATH)/%.h.in $(SCRIPT)
-	$(transform-generated-source)
+LOCAL_MODULE := i965_drv_video
+LOCAL_MODULE_TAGS := optional
+LOCAL_MODULE_CLASS := SHARED_LIBRARIES
+
+intermediates := $(call local-generated-sources-dir)
+
+GEN := $(intermediates)/intel_version.h
+$(GEN): $(LOCAL_PATH)/intel_version.h.in $(wildcard $(LOCAL_PATH)/../.git/logs/HEAD)
+	@echo "Generating: $@ <= git"; mkdir -p $(@D)
+	$(hide) VER=`cd $(<D)/.. && git describe --tags --always --dirty || echo unknown`; \
+	sed -e "s|\@INTEL_DRIVER_GIT_VERSION\@|$$VER|" $< > $@
 LOCAL_GENERATED_SOURCES += $(GEN)
 
 LOCAL_CFLAGS := -DLINUX -g -Wall -Wno-unused -fvisibility=hidden
 
-LOCAL_MODULE_TAGS := optional
-LOCAL_MODULE := i965_drv_video
-
 LOCAL_SHARED_LIBRARIES := libdl libdrm libdrm_intel libcutils \
                libva libva-android libstdc++
 
-- 
2.11.0