From 65b73c8f025532cf0413f2edb96d68f287678fcf Mon Sep 17 00:00:00 2001
From: Banajit Goswami <bgoswami@codeaurora.org>
Date: Thu, 22 Feb 2018 21:49:35 -0800
Subject: [PATCH] audio: uapi: create audio_kernel_headers target

Create a audio_kernel_headers target so that all audio UAPI
header files can be copied to the right target specific OUT
directory and make it easy for clients to mark dependency on
the header files.

Change-Id: I09ca422cbdd067e6e56fff13deaa4e92de3de1fc
Signed-off-by: Banajit Goswami <bgoswami@codeaurora.org>
---
 Android.mk              |  1 +
 include/uapi/Android.mk | 28 ++++++++++++++++++++++++++++
 2 files changed, 29 insertions(+)
 create mode 100644 include/uapi/Android.mk

diff --git a/Android.mk b/Android.mk
index 74058a1cb1fb..6b4894bbf0f6 100644
--- a/Android.mk
+++ b/Android.mk
@@ -14,6 +14,7 @@ $(shell rm -rf $(PRODUCT_OUT)/obj/vendor/qcom/opensource/audio-kernel/asoc/Modul
 $(shell rm -rf $(PRODUCT_OUT)/obj/vendor/qcom/opensource/audio-kernel/asoc/codecs/Module.symvers)
 $(shell rm -rf $(PRODUCT_OUT)/obj/vendor/qcom/opensource/audio-kernel/asoc/codecs/wcd934x/Module.symvers)
 
+include $(MY_LOCAL_PATH)/include/uapi/Android.mk
 include $(MY_LOCAL_PATH)/ipc/Android.mk
 include $(MY_LOCAL_PATH)/dsp/Android.mk
 include $(MY_LOCAL_PATH)/dsp/codecs/Android.mk
diff --git a/include/uapi/Android.mk b/include/uapi/Android.mk
new file mode 100644
index 000000000000..36bcfdefae32
--- /dev/null
+++ b/include/uapi/Android.mk
@@ -0,0 +1,28 @@
+# Use this by setting
+#   LOCAL_HEADER_LIBRARIES := audio_kernel_headers
+
+LOCAL_PATH := $(call my-dir)
+MYLOCAL_PATH := $(LOCAL_PATH)
+
+UAPI_OUT := $(PRODUCT_OUT)/obj/vendor/qcom/opensource/audio-kernel/include
+
+AUDIO_KERNEL_HEADERS := $(call all-named-files-under,*.h,linux) $(call all-named-files-under,*.h,sound)
+
+HEADER_INSTALL_DIR := kernel/msm-$(TARGET_KERNEL_VERSION)/scripts
+
+BUILD_ROOT_RELATIVE := ../../../../../../../
+
+include $(CLEAR_VARS)
+LOCAL_MODULE                  := audio_kernel_headers
+LOCAL_ADDITIONAL_DEPENDENCIES := $(TARGET_PREBUILT_INT_KERNEL)
+
+GEN := $(addprefix $(UAPI_OUT)/,$(AUDIO_KERNEL_HEADERS))
+$(GEN): PRIVATE_PATH := $(MYLOCAL_PATH)
+$(GEN): PRIVATE_CUSTOM_TOOL = $(shell cd $(PRODUCT_OUT)/obj/KERNEL_OBJ; $(BUILD_ROOT_RELATIVE)$(HEADER_INSTALL_DIR)/headers_install.sh $(BUILD_ROOT_RELATIVE)$(dir $@) $(BUILD_ROOT_RELATIVE)$(subst $(UAPI_OUT),$(MYLOCAL_PATH),$(dir $@)) $(notdir $@))
+$(GEN): $(addprefix $(MYLOCAL_PATH)/,$(AUDIO_KERNEL_HEADERS))
+	$(transform-generated-source)
+
+LOCAL_GENERATED_SOURCES := $(GEN)
+LOCAL_EXPORT_C_INCLUDE_DIRS := $(UAPI_OUT)
+
+include $(BUILD_HEADER_LIBRARY)