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

时间:2011-08-04 13:57:03

标签: android android-ndk makefile

看起来可能,但我的脚本会产生奇怪的结果:

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)

只有第一个包被正确解析,其他Android.mk文件正在奇数路径上被查询。 建议?

更新:我破坏了我的建筑环境......在办公室没问题,但是在家里LOCAL_PATH:= $(调用my-dir)将LOCAL_PATH定义为NDK目录而不是项目目录。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:我完全不明白这件事是如何构成路径的。我收到路径错误,如“/cygdrive/d/project/jni//cygdrive/d/Soft/project/jni/libos/src/libos.cpp”。这是在我决定指定根目录中的所有文件之后Android.mk而不是包含子模块。

更新2:没有运气,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)

6 个答案:

答案 0 :(得分:21)

这里很晚,但是如果有人读到这个问题,那么解决路径损坏问题的一种方法(指向jni中你的文件的ndk)就是在你的jni文件夹中:

include $(call all-subdir-makefiles)

然后在它的每个子文件夹中(在OP的情况下为libos,libbase和ustils)这种形式的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在jni文件夹中找到子文件夹中的one.c和two.c文件。

请注意尝试

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

将再次引发一个混乱的编译器,寻找ndk所在的源代码。

所以,在jni的每个子目录中以这种形式使用 LOCAL_PATH:= $(调用my-dir) include $(call all-subdir-makefiles)在jni本身,你应该没有问题。

希望这会对某人有所帮助。

编辑:发生此行为是因为包含$(CLEAR_VARS)不会删除LOCAL_PATH中保留的内容。

答案 1 :(得分:14)

以下是我的表现方式。

有一点需要注意的是,我没有在构建目录中放置任何C ++源代码,因为大部分内容都与平台无关。这只是意味着LOCAL_PATH不是项目目录的子目录,而/ jni中的唯一文件是2 .mk文件。

无论如何,这里是一个完整的顶级Android.mk,其中一个包含了真实项目:

顶级:

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)

...还包含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))

答案 2 :(得分:10)

我的认可是这样的:

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,包括设置当前模块变量后完成。这是必需的,因为每个include修改了LOCAL_PATH变量(实际上它修改了$(调用my-dir)返回的内容),这就是为什么包含必须在最后完成。

这将自动编译所有包含的模块(如果使用clean调用则清理),然后链接所有包含的库。

此设置已在真实项目中测试并正常运行。

从这里回答:https://docs.google.com/document/d/1jDmWgVgorTY_njX68juH5vt0KY_FXWgxkxmi2v_W_a4/edit

答案 3 :(得分:6)

你走在正确的轨道上。这是将Android.mk文件包含在另一个文件中的正确方法 - 它实际上是Android make系统所必需的。需要注意的一点是,清除变量的行应该出现在 - 包括其他makefile之后,如下所示:

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)

# Final settings.
LOCAL_MODULE := native
include $(BUILD_SHARED_LIBRARY)

我还要提到您可能想要或可能不想设置的其他重要标志,包括以下内容(来自我的一个makefile的示例):

# Settings.
LOCAL_C_INCLUDES             := $(MY_INCLUDES)
LOCAL_STATIC_LIBRARIES       := $(MY_MODULES) 
LOCAL_WHOLE_STATIC_LIBRARIES := $(MY_WHOLE_MODULES) 
LOCAL_LDLIBS                 := -lz -llog -lGLESv1_CM -lGLESv2 
LOCAL_ARM_MODE               := arm
LOCAL_MODULE                 := game

最后,我发现Android ndk中嵌入的文档特别有用。矿井位于以下位置:

android-ndk-r6/documentation.html

如果您还有其他问题,请与我们联系。希望这可以帮助! :)

答案 4 :(得分:5)

这里的答案很晚,但我遇到了这个问题,这些解决方案都没有用。解决方案结果很简单:详细here,设置MY_LOCAL_PATH变量并每次重新分配LOCAL_PATH

MY_LOCAL_PATH := $(call my-dir)

LOCAL_PATH := $(MY_LOCAL_PATH)

... declare one module

include $(LOCAL_PATH)/foo/Android.mk

LOCAL_PATH := $(MY_LOCAL_PATH)

... declare another module

答案 5 :(得分:0)

我测试下面的代码确定。

# I want only second-level mk files, that is the direct sub-directories
# in the current path.
include $(wildcard */*/Android.mk)
# include $(call all-subdir-makefiles)  ## $(wildcard $(call my-dir)/*/Android.mk)
# include $(call all-makefiles-under,$(LOCAL_PATH))

Android.mk

# I dunno why it's an empty result for $(call all-subdir-makefiles).
# $(info [^-^ print-test] all-subdir-makefiles = "$(call all-subdir-makefiles) ")
$(info [print-test] assert "jni/Android.mk" = "$(wildcard */Android.mk)") # print: jni/Android.mk
$(info [print-test] $$(wildcard */*/Android.mk) = "$(wildcard */*/Android.mk)") # print: jni/xxdir/Android.mk

我打印结果:

$ cd your_project_path
$ ndk-build
[print-test] assert "jni/Android.mk" = "jni/Android.mk"
[print-test] (wildcard */*/Android.mk) = "jni/HelloWorld/Android.mk jni/MessagePack/Android.mk"