Android: try to auto generate <va/version.h>

build/gen_version.sh

+#!/bin/sh
+
+libva_topdir="$1"
+version_h_in="$2"
+
+parse_configure_ac() {
+    sed -n "/^m4_define.*${1}.*\[\([0-9]*\)\].*/s//\1/p" ${libva_topdir}/configure.ac
+}
+
+parse_configure() {
+    sed -n "/^${1}=\([0-9]*\)/s//\1/p" ${libva_topdir}/configure
+}
+
+if test -f "${libva_topdir}/configure.ac"; then
+    libva_major_version=`parse_configure_ac libva_major_version`
+    libva_minor_version=`parse_configure_ac libva_minor_version`
+    libva_micro_version=`parse_configure_ac libva_micro_version`
+elif test -f "${libva_topdir}/configure"; then
+    libva_major_version=`parse_configure LIBVA_MAJOR_VERSION`
+    libva_minor_version=`parse_configure LIBVA_MINOR_VERSION`
+    libva_micro_version=`parse_configure LIBVA_MICRO_VERSION`
+else
+    echo "ERROR: configure or configure.ac file not found in $libva_topdir/"
+    exit 1
+fi
+libva_version="$libva_major_version.$libva_minor_version.$libva_micro_version"
+
+sed -e "s/@LIBVA_MAJOR_VERSION@/${libva_major_version}/" \
+    -e "s/@LIBVA_MINOR_VERSION@/${libva_minor_version}/" \
+    -e "s/@LIBVA_MICRO_VERSION@/${libva_micro_version}/" \
+    -e "s/@LIBVA_VERSION@/${libva_version}/" \
+    $version_h_in

va/Android.mk

@@ -13,7 +13,16 @@ include $(CLEAR_VARS)
 LOCAL_SRC_FILES := \
 	va.c \
 	va_trace.c \
-	va_fool.c 
+	va_fool.c
+
+intermediates := $(local-intermediates-dir)
+GEN := $(intermediates)/va_version.h
+$(GEN): PRIVATE_GEN_VERSION := $(LOCAL_PATH)/../build/gen_version.sh
+$(GEN): PRIVATE_INPUT_FILE := $(LOCAL_PATH)/va_version.h.in
+$(GEN): PRIVATE_CUSTOM_TOOL = sh $(PRIVATE_GEN_VERSION) $(LOCAL_PATH)/.. $(PRIVATE_INPUT_FILE) > $@
+$(GEN): $(LOCAL_PATH)/va_version.h $(PRIVATE_GEN_VERSION)
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN) 
 
 LOCAL_CFLAGS += \
 	-DANDROID \