CMake 引入外部工程方法

ExternalProject用法

include(ExternalProject) set(MultiMarkdown_ROOT ${CMAKE_BINARY_DIR}/thirdparty/MultiMarkdown) set(MultiMarkdown_GIT_TAG 6.6.0) # 指定版本 set(MultiMarkdown_GIT_URL https://github.com/fletcher/MultiMarkdown-6.git) # 指定git仓库地址 set(MultiMarkdown_CONFIGURE cd ${MultiMarkdown_ROOT}/src/MultiMarkdown-build && cmake -DCMAKE_INSTALL_PREFIX=. ${MultiMarkdown_ROOT}/src/MultiMarkdown) # 指定配置指令（注意此处修改了安装目录，否则默认情况下回安装到系统目录） set(MultiMarkdown_MAKE cd ${MultiMarkdown_ROOT}/src/MultiMarkdown-build && make) # 指定编译指令（需要覆盖默认指令，进入我们指定的MultiMarkdown_ROOT目录下） set(MultiMarkdown_INSTALL cd ${MultiMarkdown_ROOT}/src/MultiMarkdown-build && make install) # 指定安装指令（需要覆盖默认指令，进入我们指定的MultiMarkdown_ROOT目录下） ExternalProject_Add(MultiMarkdown PREFIX ${MultiMarkdown_ROOT} GIT_REPOSITORY ${MultiMarkdown_GIT_URL} GIT_TAG ${MultiMarkdown_GIT_TAG} CONFIGURE_COMMAND ${MultiMarkdown_CONFIGURE} BUILD_COMMAND ${MultiMarkdown_MAKE} INSTALL_COMMAND ${MultiMarkdown_INSTALL} ) # 指定编译好的静态库文件的路径 #set(MultiMarkdown_LIB ${MultiMarkdown_ROOT}/lib/MultiMarkdown/libMultiMarkdown.a) set(MultiMarkdown_LIB_DIR ${MultiMarkdown_ROOT}/src/MultiMarkdown-build) # 指定头文件所在的目录 set(MultiMarkdown_INCLUDE_DIR ${MultiMarkdown_ROOT}/src/MultiMarkdown-build) message("Rescan0 ${MultiMarkdown_FOUND}") #if (APPLE) # include_directories(${MultiMarkdown_LIB_DIR}/libMultiMarkdown.framework/Headers) # link_directories(${MultiMarkdown_LIB_DIR}) #endif () include_directories(${MultiMarkdown_ROOT}/src/MultiMarkdown-build/libMultiMarkdown.framework/Headers) add_library(Markdown STATIC IMPORTED) set_target_properties(Markdown PROPERTIES FRAMEWORK TRUE IMPORTED_LOCATION ${MultiMarkdown_ROOT}/src/MultiMarkdown-build/libMultiMarkdown.framework/libMultiMarkdown) #if (NOT ${MultiMarkdown_FOUND}) # #rerun cmake in initial build # #will update cmakecache/project files on first build # #so you may have to reload project after first build # message("Rescan1") # add_custom_target(Rescan ${CMAKE_COMMAND} ${CMAKE_SOURCE_DIR} DEPENDS MultiMarkdown) #else () # #Rescan becomes a dummy target after first build # #this prevents cmake from rebuilding cache/projects on subsequent builds # message("Rescan2") # add_custom_target(Rescan) #endif ()

FetchContent用法

include(FetchContent) set(SPDLOG_GIT_TAG v1.10.0) # 指定版本 set(SPDLOG_GIT_URL https://github.com/gabime/spdlog.git) # 指定git仓库地址 FetchContent_Declare( spdlog GIT_REPOSITORY ${SPDLOG_GIT_URL} GIT_TAG ${SPDLOG_GIT_TAG} ) FetchContent_MakeAvailable(spdlog)