1# Copyright (C) 2010 The Android Open Source Project 2# 3# Licensed under the Apache License, Version 2.0 (the "License"); 4# you may not use this file except in compliance with the License. 5# You may obtain a copy of the License at 6# 7# http://www.apache.org/licenses/LICENSE-2.0 8# 9# Unless required by applicable law or agreed to in writing, software 10# distributed under the License is distributed on an "AS IS" BASIS, 11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12# See the License for the specific language governing permissions and 13# limitations under the License. 14# 15 16# This file is designed to be called from the 'ndk-build' script 17# or similar wrapper tool. 18# 19 20# Detect the NDK installation path by processing this Makefile's location. 21# This assumes we are located under $NDK_ROOT/build/core/main.mk 22# 23NDK_ROOT := $(dir $(lastword $(MAKEFILE_LIST))) 24NDK_ROOT := $(strip $(NDK_ROOT:%build/core/=%)) 25NDK_ROOT := $(subst \,/,$(NDK_ROOT)) 26NDK_ROOT := $(NDK_ROOT:%/=%) 27ifeq ($(NDK_ROOT),) 28 # for the case when we're invoked from the NDK install path 29 NDK_ROOT := . 30endif 31ifeq ($(NDK_LOG),1) 32 $(info Android NDK: NDK installation path auto-detected: '$(NDK_ROOT)') 33endif 34ifneq ($(words $(NDK_ROOT)),1) 35 $(info Android NDK: You NDK installation path contains spaces.) 36 $(info Android NDK: Please re-install to a different location to fix the issue !) 37 $(error Aborting.) 38endif 39 40include $(NDK_ROOT)/build/core/init.mk 41 42# ==================================================================== 43# 44# If NDK_PROJECT_PATH is not defined, find the application's project 45# path by looking at the manifest file in the current directory or 46# any of its parents. If none is found, try again with 'jni/Android.mk' 47# 48# Note that we first look at the current directory to avoid using 49# absolute NDK_PROJECT_PATH values. This reduces the length of all 50# source, object and binary paths that are passed to build commands. 51# 52# It turns out that some people use ndk-build to generate static 53# libraries without a full Android project tree. 54# 55# If NDK_PROJECT_PATH=null, ndk-build make no attempt to look for it, but does 56# need the following variables depending on NDK_PROJECT_PATH to be explicitly 57# specified (from the default, if any): 58# 59# NDK_OUT 60# NDK_LIBS_OUT 61# APP_BUILD_SCRIPT 62# NDK_DEBUG (optional, default to 0) 63# Other APP_* used to be in Application.mk 64# 65# This behavior may be useful in an integrated build system. 66# 67# ==================================================================== 68 69ifeq ($(HOST_OS),windows) 70# On Windows, defining host-dir-parent is a bit more tricky because the 71# GNU Make $(dir ...) function doesn't return an empty string when it 72# reaches the top of the directory tree, and we want to enforce this to 73# avoid infinite loops. 74# 75# $(dir C:) -> C: (empty expected) 76# $(dir C:/) -> C:/ (empty expected) 77# $(dir C:\) -> C:\ (empty expected) 78# $(dir C:/foo) -> C:/ (correct) 79# $(dir C:\foo) -> C:\ (correct) 80# 81host-dir-parent = $(strip \ 82 $(eval __host_dir_node := $(patsubst %/,%,$(subst \,/,$1)))\ 83 $(eval __host_dir_parent := $(dir $(__host_dir_node)))\ 84 $(filter-out $1,$(__host_dir_parent))\ 85 ) 86else 87host-dir-parent = $(patsubst %/,%,$(dir $1)) 88endif 89 90find-project-dir = $(strip $(call find-project-dir-inner,$(abspath $1),$2)) 91 92find-project-dir-inner = \ 93 $(eval __found_project_path := )\ 94 $(eval __find_project_path := $1)\ 95 $(eval __find_project_file := $2)\ 96 $(call find-project-dir-inner-2)\ 97 $(__found_project_path) 98 99find-project-dir-inner-2 = \ 100 $(call ndk_log,Looking for $(__find_project_file) in $(__find_project_path))\ 101 $(eval __find_project_manifest := $(strip $(wildcard $(__find_project_path)/$(__find_project_file))))\ 102 $(if $(__find_project_manifest),\ 103 $(call ndk_log, Found it !)\ 104 $(eval __found_project_path := $(__find_project_path))\ 105 ,\ 106 $(eval __find_project_parent := $(call host-dir-parent,$(__find_project_path)))\ 107 $(if $(__find_project_parent),\ 108 $(eval __find_project_path := $(__find_project_parent))\ 109 $(call find-project-dir-inner-2)\ 110 )\ 111 ) 112 113NDK_PROJECT_PATH := $(strip $(NDK_PROJECT_PATH)) 114 115ifeq (null,$(NDK_PROJECT_PATH)) 116 117$(call ndk_log,Make no attempt to look for NDK_PROJECT_PATH.) 118 119else 120 121# To keep paths as short as possible during the build, we first look if the 122# current directory is the top of our project path. If this is the case, we 123# will define NDK_PROJECT_PATH to simply '.' 124# 125# Otherwise, we will use find-project-dir which will first get the absolute 126# path of the current directory the climb back the hierarchy until we find 127# something. The result will always be a much longer definition for 128# NDK_PROJECT_PATH 129# 130ifndef NDK_PROJECT_PATH 131 ifneq (,$(strip $(wildcard AndroidManifest.xml))) 132 NDK_PROJECT_PATH := . 133 else 134 ifneq (,$(strip $(wildcard jni/Android.mk))) 135 NDK_PROJECT_PATH := . 136 endif 137 endif 138endif 139ifndef NDK_PROJECT_PATH 140 NDK_PROJECT_PATH := $(call find-project-dir,.,jni/Android.mk) 141endif 142ifndef NDK_PROJECT_PATH 143 NDK_PROJECT_PATH := $(call find-project-dir,.,AndroidManifest.xml) 144endif 145ifndef NDK_PROJECT_PATH 146 $(call __ndk_info,Could not find application project directory !) 147 $(call __ndk_info,Please define the NDK_PROJECT_PATH variable to point to it.) 148 $(call __ndk_error,Aborting) 149endif 150 151# Check that there are no spaces in the project path, or bad things will happen 152ifneq ($(words $(NDK_PROJECT_PATH)),1) 153 $(call __ndk_info,Your Android application project path contains spaces: '$(NDK_PROJECT_PATH)') 154 $(call __ndk_info,The Android NDK build cannot work here. Please move your project to a different location.) 155 $(call __ndk_error,Aborting.) 156endif 157 158$(call ndk_log,Found project path: $(NDK_PROJECT_PATH)) 159 160NDK_APPLICATION_MK := $(strip $(wildcard $(NDK_PROJECT_PATH)/jni/Application.mk)) 161 162endif # NDK_PROJECT_PATH == null 163 164ifndef NDK_APPLICATION_MK 165 NDK_APPLICATION_MK := $(NDK_ROOT)/build/core/default-application.mk 166endif 167 168 169# Place all generated intermediate files here 170NDK_APP_OUT := $(strip $(NDK_OUT)) 171ifndef NDK_APP_OUT 172 ifeq (null,$(NDK_PROJECT_PATH)) 173 $(call __ndk_info,NDK_PROJECT_PATH==null. Please explicitly set NDK_OUT to directory for all generated intermediate files.) 174 $(call __ndk_error,Aborting.) 175 endif 176 NDK_APP_OUT := $(NDK_PROJECT_PATH)/obj 177endif 178$(call ndk_log,Ouput path for intermediate files: $(NDK_APP_OUT)) 179 180# Place all generated library files here. This is rarely changed since aapt expects the default libs/ 181NDK_APP_LIBS_OUT := $(strip $(NDK_LIBS_OUT)) 182ifndef NDK_APP_LIBS_OUT 183 ifeq (null,$(NDK_PROJECT_PATH)) 184 $(call __ndk_info,NDK_PROJECT_PATH==null. Please explicitly set NDK_LIBS_OUT to directory for generated library files.) 185 $(call __ndk_error,Aborting.) 186 endif 187 NDK_APP_LIBS_OUT := $(NDK_PROJECT_PATH)/libs 188endif 189$(call ndk_log,Ouput path for generated library files: $(NDK_APP_LIBS_OUT)) 190 191# Fake an application named 'local' 192_app := local 193_application_mk := $(NDK_APPLICATION_MK) 194NDK_APPS := $(_app) 195 196include $(BUILD_SYSTEM)/add-application.mk 197 198# For cygwin, put generated dependency conversion script here 199# Do not define this variable for other host platforms 200# 201ifeq ($(HOST_OS),cygwin) 202NDK_DEPENDENCIES_CONVERTER := $(NDK_APP_OUT)/convert-dependencies.sh 203endif 204 205# If a goal is DUMP_xxx then we dump a variable xxx instead 206# of building anything 207# 208DUMP_VAR := $(patsubst DUMP_%,%,$(filter DUMP_%,$(MAKECMDGOALS))) 209MAKECMDGOALS := $(filter-out DUMP_$(DUMP_VAR),$(MAKECMDGOALS)) 210 211include $(BUILD_SYSTEM)/setup-imports.mk 212 213ifneq (,$(DUMP_VAR)) 214 215# We only support a single DUMP_XXX goal at a time for now. 216ifneq ($(words $(DUMP_VAR)),1) 217 $(call __ndk_error,!!TOO-MANY-DUMP-VARIABLES!!) 218endif 219 220$(foreach _app,$(NDK_APPS),\ 221 $(eval include $(BUILD_SYSTEM)/setup-app.mk)\ 222) 223 224DUMP_$(DUMP_VAR): 225 @echo $($(DUMP_VAR)) 226else 227 # Build it 228 include $(BUILD_SYSTEM)/build-all.mk 229endif 230