Question

我正在使用cmake构建一个可在英特尔Galileo主板上运行的可执行文件。

我的问题是如何在构建过程中包含外部mraa库。

当我从git（1）下载库时，我是否需要按照此处的描述构建它

我需要在CMakeLists.txt文件中放入什么来获取图书馆？

这是我目前在CMakeLists.txt文件中的内容，但我认为这是不正确的。

### MRAA ###
add_subdirectory(mraa-master/src)
file(GLOB mraa_SRC
    "mraa-master/src/*.c"
)

include_directories( "${PROJECT_SOURCE_DIR}/mraa-master/include"  )
add_library( ${MRAA_LIBRARY_NAME} SHARED  ${mraa_SRC}  )

谢谢

cmake_minimum_required(VERSION 2.8)

MESSAGE( STATUS "Starting build process")

SET( CMAKE_VERBOSE_MAKEFILE on )

if (CMAKE_BUILD_TYPE EQUAL "Debug")
MESSAGE(STATUS "Building in debug mode")
elseif (CMAKE_BUILD_TYPE EQUAL "Release")
MESSAGE(STATUS "Building in release mode")
endif()

SET(PROJECT_NAME "TestProject")
SET(APPLICATION_NAME "TestApplication")
SET(SAFE_STRING_LIBRARY "SafeString")
SET(APPLICATION_LIBRARY "Applibrary")

PROJECT( ${PROJECT_NAME} )

MESSAGE( STATUS "PROJECT: " ${PROJECT_NAME} )


SET(WRSDK_PATH "$ENV{WINDRIVER_SDK_DIR}")
IF (WRSDK_PATH)
else()
SET(WRSDK_PATH /opt/windriver/wrlinux/5.0-intel-quark/)
endif()

SET(APPLIBRARY_NAME  ${APPLICATION_LIBRARY} )
SET(SAFE_STRING_LIBRARY_NAME ${SAFE_STRING_LIBRARY} )

### SAFE STRING ###
add_subdirectory(SafeStringStaticLibrary/safeclib) 
file(GLOB safestring_SRC
"SafeStringStaticLibrary/safeclib/*.c" 
)

include_directories( "${PROJECT_SOURCE_DIR}/SafeStringStaticLibrary /safeclib"  ) 
add_library( ${SAFE_STRING_LIBRARY_NAME} SHARED  ${safestring_SRC}  ) 

include(ExternalProject)
ExternalProject_Add(mraa
    GIT_REPOSITORY https://github.com/intel-iot-devkit/mraa.git
    GIT_TAG        v0.8.0
    UPDATE_COMMAND ""
    INSTALL_COMMAND "" )


file(GLOB app_SRC
"classes/*.cpp"
"Logger.cpp"
"sqlite3.c"
"shell.c"
)

add_library( ${APPLIBRARY_NAME} SHARED ${app_SRC})
include_directories(  "${CMAKE_SOURCE_DIR}"     "${CMAKE_SOURCE_DIR}/SafeStringStaticLibrary/include" )

add_executable( ${APPLICATION_NAME} ${APPLICATION_NAME}.cpp

include_directories(  "${CMAKE_SOURCE_DIR}"   "${CMAKE_SOURCE_DIR}/SafeStringStaticLibrary/include"  "${CMAKE_SOURCE_DIR}/classes")

TARGET_LINK_LIBRARIES(  ${APPLICATION_NAME}  ${APPLIBRARY_NAME} ${SAFE_STRING_LIBRARY_NAME} -lrt -lpthread -lgcov -ldl)

Answer 1

与3d party项目一起构建项目的最简单方法是add_subdirectory()子项目。以下方法意味着您（手动）将（git clone）项目的源（mraa）下载到项目来源的mraa-lib子目录中。

<强>的CMakeLists.txt ：

cmake_minimum_required(VERSION 2.8)

MESSAGE( STATUS "Starting build process")

# Configure subproject before definition of variables for main project.
#
# Subproject defines *mraa* library target.
add_subdirectory(mraa-lib)

# Before installation, public mraa headers are contained under *api* subdirectory.
include_directories(mraa-lib/api)

... # create executable ${APPLICATION_NAME}

# Linking with mraa library is straightforward.
target_link_libraries(${APPLICATION_NAME} mraa)

这样，mraa子项目将与您的项目一起配置，构建和安装。因此，如果您交叉编译项目（使用工具链文件或IDE内部），子项目也将进行交叉编译。

包括cmakelists.txt文件中的外部库

1 个答案: