Android.mk :如何将Android.mk包含到另一个Android.mk(分层项目结构)中？

Question

看起来这是可能的，但我的脚本产生了奇怪的结果：

LOCAL_PATH:= $(call my-dir)
include $(CLEAR_VARS)

include $(LOCAL_PATH)/libos/Android.mk
include $(LOCAL_PATH)/libbase/Android.mk
include $(LOCAL_PATH)/utils/Android.mk

LOCAL_MODULE := native
include $(BUILD_SHARED_LIBRARY)

只有第一个包含正在被很好地解析，其他的Android.mk文件在奇怪的路径上被分割。有什么建议吗？

更新：我破坏了我的建筑环境..。这在办公室是可以的，但是在家里，LOCAL_PATH:= $(调用my)将LOCAL_PATH定义为NDK，而不是project。这是我的建筑批次：

set BASHPATH=K:\cygwin\bin\bash
set PROJECTDIR=/cygdrive/h/Alex/Alex/Work/Android/remote-android
set NDKDIR=/cygdrive/h/Alex/Programming_Docs/Android/android-ndk-r6/ndk-build
set APP_BUILD_SCRIPT=/cygdrive/h/Alex/Alex/Work/Android/project/jni/Android.mk
set DEV_ROOT=h:/Alex/Alex/Work/Android/project

%BASHPATH% --login -c "cd %PROJECTDIR% && %NDKDIR%"

更新:我完全不明白这东西是怎么组成路径的。在我决定指定根"/cygdrive/d/project/jni//cygdrive/d/Soft/project/jni/libos/src/libos.cpp'.中的所有文件而不是包含子模块之后，Android.mk这样的路径会出现错误。

更新2:失败，这也不起作用：

LOCAL_PATH:= $(call my-dir)
# Include makefiles here.
include $(LOCAL_PATH)/libos/Android.mk
include $(LOCAL_PATH)/libbase/Android.mk
include $(LOCAL_PATH)/utils/Android.mk

# Clear variables here.
 include $(CLEAR_VARS)

Answer 1

这里已经很晚了，但是如果有人读到了这个问题，一种解决路径中断问题(指向jni文件中的ndk )的方法是在jni文件夹中拥有：

include $(call all-subdir-makefiles)

然后，在它的每个子文件夹(libos、libbase和ustils，如果是OP)中，这个表单的Android.mk：

LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_C_INCLUDES        := $(LOCAL_PATH)
LOCAL_MODULE            := utils
LOCAL_SRC_FILES         := one.c
LOCAL_SRC_FILES         += two.c

其中第二个Android.mk和one.c和two.c文件位于jni文件夹中的一个子文件夹中。

请注意，尝试某事，如

LOCAL_PATH_BIS_WEIRD_OTHER_NAME := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_C_INCLUDES        := $(LOCAL_PATH_OTHER_FUNKY_NAME)
LOCAL_MODULE            := utils
LOCAL_SRC_FILES         := one.c
LOCAL_SRC_FILES         += two.c

将再次导致一个困惑的编译器正在寻找ndk所在的源代码。

因此，在jni的每个子目录中使用LOCAL_PATH := $(调用my-dir)，并且在jni本身中包含$(调用所有子目录-makefiles)，您应该没有问题。

希望这能帮上忙。

编辑:之所以会发生这种行为，是因为LOCAL_PATH中保存的内容没有被包含$(CLEAR_VARS)删除。

Answer 2

我就是这样做的。

请注意，我没有将任何C++源代码放在build中，因为它大部分是独立于平台的。这仅仅意味着LOCAL_PATH不是项目dir的子dir，/jni中唯一的文件是2 .mk文件。

不管怎么说，这里有一个完整的顶级Android.mk，其中一个包含了一个真正的项目：

最高层：

LOCAL_PATH := $(abspath $(call my-dir)/../../../src)

# utility to create paths for included makefiles
local-rel-path = $(patsubst /%,%,$(subst $(LOCAL_PATH),,$(abspath $1)))

include $(CLEAR_VARS)

LOCAL_MODULE := NativeApp

LOCAL_LDLIBS := -lGLESv1_CM

# As opposed to "thumb"
LOCAL_ARM_MODE := arm

LOCAL_SRC_FILES :=

#
# includes
#
# Note that LOCAL_C_INCLUDE is relative to thr NDK root, unlike source paths
# (or you can just make 'em absolute)
#
STL_INC_DIR = /cygdrive/c/STLport-5.2.1/stlport

MY_LOCAL_C_INCLUDES := core satcalc bruce/bruce/inc bruce/gfx/inc bruce/ui/inc bruce/unzip bruce/libpng

LOCAL_C_INCLUDES := $(addprefix $(LOCAL_PATH)/,$(MY_LOCAL_C_INCLUDES)) $(STL_INC_DIR) 

ifeq ($(APP_OPTIM),debug)
# debug
LOCAL_CFLAGS = -DPLATFORM_ANDROID -D_DEBUG -fvisibility=hidden
else
#release
LOCAL_CFLAGS = -DPLATFORM_ANDROID -fvisibility=hidden
endif

LOCAL_STATIC_LIBRARIES := 

#
# Code
#
include $(LOCAL_PATH)/core/Android.mk
include $(LOCAL_PATH)/satcalc/Android.mk
include $(LOCAL_PATH)/bruce/bruce/src/Android.mk
include $(LOCAL_PATH)/bruce/gfx/src/Android.mk
include $(LOCAL_PATH)/bruce/ui/src/Android.mk
include $(LOCAL_PATH)/bruce/unzip/Android.mk
include $(LOCAL_PATH)/bruce/libpng/Android.mk

#
# Build it
#
include $(BUILD_SHARED_LIBRARY)

...and an包含了Android.mk：

MY_PATH = $(call my-dir)

MY_LOCAL = $(call local-rel-path, $(MY_PATH))

MY_SRC_FILES = Font.cpp Gfx2d_ogles.cpp SgaState.cpp \
        Sprite.cpp TImage.cpp TImageOgles.cpp 

LOCAL_SRC_FILES += $(addprefix $(MY_LOCAL)/,$(MY_SRC_FILES))

Answer 3

我的方法是这样的：

LOCAL_PATH:= $(call my-dir)

# Clear variables here.
include $(CLEAR_VARS)

# Current module settings.
LOCAL_MODULE := native
# setup some source files
LOCAL_SRC_FILES := file1.c file2.c
# setup some includes
LOCAL_C_INCLUDES := $(LOCAL_PATH)/libos/include
# setup the included libs for the main module
LOCAL_STATIC_LIBRARIES := libos libbase utils # note that order matters here

include $(BUILD_SHARED_LIBRARY)

# Include makefiles here. Its important that these 
# includes are done after the main module, explanation below.

# create a temp variable with the current path, because it 
# changes after each include
ZPATH := $(LOCAL_PATH)

include $(ZPATH)/libos/Android.mk
include $(ZPATH)/libbase/Android.mk
include $(ZPATH)/utils/Android.mk

注意，这包括在设置当前模块变量之后执行。这是必要的，因为每个包含都修改了LOCAL_PATH变量(实际上它修改了$(称为my-dir)返回的内容)，这也是为什么包含必须最后完成的原因。

这将自动编译所有包含的模块(如果用clean调用，则会清除)，然后与所有包含的库进行链接。

此设置在实际项目中进行了测试，并正常工作。

从这里得到的答案：A4/编辑