编译生成第三方库¶

使用 cmake 管理项目有一个很舒服的地方就是对于第三方库的添加，只需要**find_package**一行命令就可以添加第三方库的各种目录版本等。如果是自己写的代码也可以支持**find_package**一键导入呢？find_package**本质上就是找对应库的**Config. Cmake**文件以及文件中的**INCLUDE_DIRS 和 **LIB_DIR**路径。

0.1 准备一个 .h.in 模板文件¶

命名：
XXXXConfig. H. In 比如 KissDicomViewerConfig. Cmake. In
包含内容：
INCLUDE_DIRS、LIB_DIR、LINK_DIRECTORIES

set(KissDicomViewer_INCLUDE_DIRS "@KissDicomViewer_INCLUDE_DIRS@")
set(KissDicomViewer_LIB_DIR "@KissDicomViewer_LIB_DIR@")
set(KissDicomViewer_Resource_DIR "@KissDicomViewer_Resource_DIR@")
LINK_DIRECTORIES(${KissDicomViewer_LIB_DIR})
set(KissDicomViewer_SHARDE_LIBRARIES KissDicomViewer_sharde)
set(KissDicomViewer_STATIC_LIBRARIES KissDicomViewer_static)

0.2 编写库文件增加 .cmake 文件导出¶

静态库、动态库生成目录

# Output directory
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY_DEBUG
    ${PROJECT_SOURCE_DIR}/bin/Debug)
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY_DEBUG
    ${PROJECT_SOURCE_DIR}/bin/Debug)
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY_DEBUG
    ${PROJECT_SOURCE_DIR}/bin/Debug)

set(CMAKE_RUNTIME_OUTPUT_DIRECTORY_RELEASE
    ${PROJECT_SOURCE_DIR}/bin/Release)
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY_RELEASE
    ${PROJECT_SOURCE_DIR}/bin/Release)
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY_RELEASE
    ${PROJECT_SOURCE_DIR}/bin/Release)

资源文件位置

set(SRCS ${SOURCES} ${HEADERS} ${RESOURCES} ${FORMS})
set(KissDicomViewer_Resource_DIR ${RESOURCES} CACHE PATH "mailiu Resource")

头文件、库目录记录

# LOCAL FILES
set(INCLUDE_DIRS ${PROJECT_SOURCE_DIR}/src)
set(KissDicomViewer_INCLUDE_DIRS "${INCLUDE_DIRS}")
set(KissDicomViewer_LIB_DIR      "${PROJECT_SOURCE_DIR}/bin/Release")
set(KissDicomViewer_CMAKE_DIR    "${PROJECT_BINARY_DIR}")

生成**Config. Cmake**文件

# Set Config
message(STATUS "Generating '${PROJECT_BINARY_DIR}/KissProjectConfig.cmake'")
configure_file(${PROJECT_SOURCE_DIR}/cmake/KissDicomViewerConfig.cmake.in
  "${PROJECT_BINARY_DIR}/KissDicomViewerConfig.cmake" @ONLY)

0.3 新工程使用¶

find_package(KissDicomViewer REQUIRED)
include_directories(${KissDicomViewer_INCLUDE_DIRS})

target_link_libraries(
    ${PROJECT_NAME}
    ${KissDicomViewer_SHARDE_LIBRARIES})