soong.mk revision 4e2677eaf17f29e23ebbedc412f1a8d23ec1b5ad 
1SOONG_OUT_DIR := $(OUT_DIR)/soong
2SOONG_HOST_EXECUTABLES := $(SOONG_OUT_DIR)/host/$(HOST_PREBUILT_TAG)/bin
3KATI := $(SOONG_HOST_EXECUTABLES)/ckati
4MAKEPARALLEL := $(SOONG_HOST_EXECUTABLES)/makeparallel
5
6# This needs to exist before the realpath checks below
7$(shell mkdir -p $(SOONG_OUT_DIR))
8
9ifeq (,$(filter /%,$(SOONG_OUT_DIR)))
10SOONG_TOP_RELPATH := $(shell python -c "import os; print os.path.relpath('$(TOP)', '$(SOONG_OUT_DIR)')")
11# Protect against out being a symlink and relative paths not working
12ifneq ($(realpath $(SOONG_OUT_DIR)/$(SOONG_TOP_RELPATH)),$(realpath $(TOP)))
13SOONG_OUT_DIR := $(abspath $(SOONG_OUT_DIR))
14SOONG_TOP_RELPATH := $(abspath $(TOP))
15endif
16else
17SOONG_TOP_RELPATH := $(abspath $(TOP))
18endif
19
20SOONG := $(SOONG_OUT_DIR)/soong
21SOONG_BUILD_NINJA := $(SOONG_OUT_DIR)/build.ninja
22SOONG_ANDROID_MK := $(SOONG_OUT_DIR)/Android.mk
23SOONG_VARIABLES := $(SOONG_OUT_DIR)/soong.variables
24SOONG_IN_MAKE := $(SOONG_OUT_DIR)/.soong.in_make
25
26# Bootstrap soong.  Run only the first time for clean builds
27$(SOONG):
28	$(hide) mkdir -p $(dir $@)
29	$(hide) cd $(dir $@) && $(SOONG_TOP_RELPATH)/bootstrap.bash
30
31# Create soong.variables with copies of makefile settings.  Runs every build,
32# but only updates soong.variables if it changes
33SOONG_VARIABLES_TMP := $(SOONG_VARIABLES).$$$$
34$(SOONG_VARIABLES): FORCE
35	$(hide) mkdir -p $(dir $@)
36	$(hide) (\
37	echo '{'; \
38	echo '    "Device_uses_jemalloc": $(if $(filter true,$(MALLOC_SVELTE)),false,true),'; \
39	echo '    "Device_uses_dlmalloc": $(if $(filter true,$(MALLOC_SVELTE)),true,false),'; \
40	echo '    "Platform_sdk_version": $(PLATFORM_SDK_VERSION),'; \
41	echo '    "Unbundled_build": $(if $(TARGET_BUILD_APPS),true,false),'; \
42	echo '    "Brillo": $(if $(BRILLO),true,false),'; \
43	echo ''; \
44	echo '    "DeviceName": "$(TARGET_DEVICE)",'; \
45	echo '    "DeviceArch": "$(TARGET_ARCH)",'; \
46	echo '    "DeviceArchVariant": "$(TARGET_ARCH_VARIANT)",'; \
47	echo '    "DeviceCpuVariant": "$(TARGET_CPU_VARIANT)",'; \
48	echo '    "DeviceAbi": ["$(TARGET_CPU_ABI)", "$(TARGET_CPU_ABI2)"],'; \
49	echo '    "DeviceUsesClang": $(if $(USE_CLANG_PLATFORM_BUILD),$(USE_CLANG_PLATFORM_BUILD),false),'; \
50	echo ''; \
51	echo '    "DeviceSecondaryArch": "$(TARGET_2ND_ARCH)",'; \
52	echo '    "DeviceSecondaryArchVariant": "$(TARGET_2ND_ARCH_VARIANT)",'; \
53	echo '    "DeviceSecondaryCpuVariant": "$(TARGET_2ND_CPU_VARIANT)",'; \
54	echo '    "DeviceSecondaryAbi": ["$(TARGET_2ND_CPU_ABI)", "$(TARGET_2ND_CPU_ABI2)"],'; \
55	echo ''; \
56	echo '    "HostArch": "$(HOST_ARCH)",'; \
57	echo '    "HostSecondaryArch": "$(HOST_2ND_ARCH)",'; \
58	echo ''; \
59	echo '    "CrossHost": "$(HOST_CROSS_OS)",'; \
60	echo '    "CrossHostArch": "$(HOST_CROSS_ARCH)",'; \
61	echo '    "CrossHostSecondaryArch": "$(HOST_CROSS_2ND_ARCH)"'; \
62	echo '}') > $(SOONG_VARIABLES_TMP); \
63	if ! cmp -s $(SOONG_VARIABLES_TMP) $(SOONG_VARIABLES); then \
64	  mv $(SOONG_VARIABLES_TMP) $(SOONG_VARIABLES); \
65	else \
66	  rm $(SOONG_VARIABLES_TMP); \
67	fi
68
69# Tell soong that it is embedded in make
70$(SOONG_IN_MAKE):
71	$(hide) mkdir -p $(dir $@)
72	$(hide) touch $@
73
74# Build an Android.mk listing all soong outputs as prebuilts
75$(SOONG_ANDROID_MK): $(SOONG) $(SOONG_VARIABLES) $(SOONG_IN_MAKE) FORCE
76	$(hide) $(SOONG) $(KATI) $(MAKEPARALLEL) $(NINJA_ARGS)
77
78$(KATI): $(SOONG_ANDROID_MK)
79$(MAKEPARALLEL): $(SOONG_ANDROID_MK)
80