我已经查看了一些关于编写 android.mk 文件的问题和“make: * No rule to make target .c required by .o”** 它们都围绕着我认为没有的错别字。
这是一个 SDL 项目，可以使用我的 CMake 构建脚本构建良好，但我无法让 android.mk 为我工作。
这是cmake中的项目设置
CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
PROJECT(blp)
#set(CMAKE_MACOSX_RPATH 1)
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
set(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake_modules)
FIND_PACKAGE(SDL2 REQUIRED)
INCLUDE_DIRECTORIES(${SDL2_INCLUDE_DIR})
INCLUDE_DIRECTORIES("${PROJECT_SOURCE_DIR}/source/core_math")
INCLUDE_DIRECTORIES("${PROJECT_SOURCE_DIR}/source/utils/time_utils")
INCLUDE_DIRECTORIES("${PROJECT_SOURCE_DIR}/source/utils/resource_utils")
INCLUDE_DIRECTORIES("${PROJECT_SOURCE_DIR}/source/ren_opengl")
INCLUDE_DIRECTORIES("${PROJECT_SOURCE_DIR}/source/core_engine")
INCLUDE_DIRECTORIES("${PROJECT_SOURCE_DIR}/source/components/renderable2d")
INCLUDE_DIRECTORIES("${PROJECT_SOURCE_DIR}/source/glm/vec3.hpp")
FIND_PACKAGE(SDL2 REQUIRED)
INCLUDE_DIRECTORIES(${SDL2_INCLUDE_DIR})
FIND_PACKAGE(SDL2_IMAGE)
INCLUDE_DIRECTORIES(${SDL2_IMAGE_INCLUDE_DIR})
ADD_SUBDIRECTORY(source)
ADD_SUBDIRECTORY(project)
SET(SRC_FILES main.c)
SET(EXTERNAL_TARGET_LIBS ${SDL2_LIBRARY} ${SDL2_IMAGE_LIBRARY})
SET(COMPONENTS renderable2d)
SET(INTERNAL_TARGET_LIBS core_math time_utils resource_utils ren_opengl)
SET(TARGET_LIBS ${INTERNAL_TARGET_LIBS} ${EXTERNAL_TARGET_LIBS} ${COMPONENTS})
FILE(COPY ${CMAKE_CURRENT_SOURCE_DIR}/resources/ DESTINATION ${CMAKE_CURRENT_BINARY_DIR}/bin/resources/)
项目子文件夹是我可以创建不同项目并重用我创建的源动态库的地方。
在源代码中，您可以看到我创建了一堆动态库。最后是动态库和一个导入所有这些库的 .h 和 .c 类，然后我在我的项目中导入那个 .h 文件以使用这些库。
现在进入我的 android.mk 文件，它还不是很完整，但这是我遇到麻烦的地方。
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE := main
SDL_PATH := ../SDL
LOCAL_C_INCLUDES := $(LOCAL_PATH)/$(SDL_PATH)/include/
LOCAL_C_INCLUDES += $(LOCAL_PATH)/src/utils/time_utils/
# Add your application source files here...
LOCAL_SRC_FILES := $(SDL_PATH)/src/main/android/SDL_android_main.c \
utils/time_utils.c \
//removing the above line, core_engine.c throws an import error
//adding the above line I get the error listed at the bottom
core_engine/core_engine.c \
project.c
LOCAL_SHARED_LIBRARIES := SDL2
LOCAL_LDLIBS := -lGLESv1_CM -lGLESv2 -llog
include $(BUILD_SHARED_LIBRARY)
make: *** No rule to make target `/Users/blubee/SDL/android-project/jni/src/time_utils/time_utils.c', needed by `/Users/blubee/SDL/android-project/obj/local/armeabi/objs/main/time_utils/time_utils.o'. Stop.
每个库都在它自己的文件夹下，在他的项目源树中，像这样
source/components/renderable2d/renderable2d.c /.h
source/core_engine/core_engine.c /.h
source/core_math/mat4_scalar/mat4_scalar.c /.h
source/core_math/vec3_scalar/vec3_scalar.c /.h
source/..
etc...
它可能是构建顺序或我在 android.mk 文件夹中定义源文件的顺序，我不确定。有什么建议么？我还确保我的环境变量或 android.mk 的源文件中没有拼写错误或多余的空格