.
+-- MyPack
| +-- Lib1
| | +-- include
| | | +-- Lib1.h
| | +-- src
| | | +-- Lib2.cpp
| | +-- CMakeLists.txt
| +-- Lib2
| | +-- include
| | | +-- Lib2.h
| | +-- src
| | | +-- Lib2.cpp
| | +-- CMakeLists.txt
| +-- CMakeLists.txt
+-- SubProject1
| +-- CMakeLists.txt
+-- SubProject2
| +-- CMakeLists.txt
+-- CMakeLists.txt
大家好。
我是CMake的新手,我正在尝试获取类似以下内容的东西。 考虑我的C ++项目的上述目录树:
我有一个目录(假设为“ MyPack”),其中包含几个子目录(Lib1,Lib2 ...),每个目录都代表我编写的C ++库。
如何设置所有内容,以便可以在其他子项目中编写find_package(MyPack)
?
每个子项目都是一个独立项目,并且不依赖于其他子项目,而仅依赖于“ MyPack”中的库。
答案 0 :(得分:0)
您的绘图有点混乱,因为Lib2之后有一个不属于任何文件夹的CMakeLists.txt ... 无论如何:是 MyPack
在第二种情况下:
顶层目录CMakeLists.txt允许您访问Lib1和Lib2的目标,如果您有这样的事情,可以在SubProject1和SubProject2中使用它们:
project(MyPack)
add_subdirectory(Lib1) # Building Lib1
add_subdirectory(Lib2) # Building Lib2
add_subdirectory(SubProject1) # you can use Lib1 & Lib2 targets here
add_subdirectory(SubProject2) # you can use Lib1 & Lib2 targets here
如果是第一种情况, MyPack 仅是Lib1和Lib2:
使用find_package(MyPack)意味着您需要创建一个Config文件并安装()您的项目:
project(MyPack)
add_subdirectory(Lib1)
add_subdirectory(Lib2)
在Lib1 / CMakeLists.txt中:
add_library(lib1 "")
add_library(MyPack::lib1 ALIAS lib1)
[...]
include(GNUInstallDirs)
install(
TARGET lib1
EXPORT MyPackTargets
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
)
在Lib2 / CMakeLists.txt中:
add_library(lib2 "")
add_library(MyPack::lib2 ALIAS lib2)
[...]
include(GNUInstallDirs)
install(
TARGET lib2
EXPORT MyPackTargets
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
)
现在,在导出MyPackTargets中具有lib1和lib2。您还必须安装该导出。
以上任何地方:
install(
EXPORT MyPackTargets
DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/MyPack
NAMESPACE MyPack::
FILE MyPackTargets.cmake # Not sure if this is still needed
)
include(CMakePackageConfigHelpers)
configure_package_config_file(
"Config.cmake.in"
"MyPackConfig.cmake"
INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/MyPack
PATH_VARS
CMAKE_INSTALL_LIBDIR
)
write_basic_package_version_file(
${CMAKE_CURRENT_BINARY_DIR}/MyPackConfigVersion.cmake
VERSION 1.0.0
COMPATIBILITY SameMajorVersion
)
### Install Config and ConfigVersion files
install(
FILES "${CMAKE_CURRENT_BINARY_DIR}/MyPackConfig.cmake"
"${CMAKE_CURRENT_BINARY_DIR}/MyPackConfigVersion.cmake"
DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/MyPack"
)
使用以下命令创建文件Config.cmake.in:
@PACKAGE_INIT@
include( "${CMAKE_CURRENT_LIST_DIR}/MyPackTargets.cmake" )
现在,如果您构建并安装MyPack项目,则其他项目中的find_package(MyPack)应该找到它并导入您创建的目标。
以下是一些文档: https://cmake.org/cmake/help/latest/module/CMakePackageConfigHelpers.html
https://blog.kitware.com/cmake-superbuilds-git-submodules/
希望有帮助