我有2个项目(prj1和prj2)。一个(prj2)依赖于另一个(prj1)是静态库。我到达时用CMake分别编译它们。
但是我需要将一个(prj1)集成到另一个(prj2)。所以我想CMake先编译静态库(prj1),然后再链接静态库。我尝试了一些操作,但id无效。
在prj2中,externals / core是git子模块(对于非git用户,您可以将此目录视为prj1的复制粘贴)。
我在prj2“SDL2”中尝试了此CMakeLists.txt(但没有成功):
cmake_minimum_required(VERSION 2.8)
if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR
"${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
set(CMAKE_CXX_FLAGS "-Wall -Wextra -Wformat=2 -Wpedantic -D_FORTIFY_SOURCE=2")
set(CMAKE_CXX_FLAGS_DEBUG "-O0 -g")
elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
# TODO
endif()
set(CMAKE_CXX_FLAGS "-std=c++11 ${CMAKE_CXX_FLAGS}")
# if (CMAKE_VERSION VERSION_LESS "3.1")
# if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU" OR
# CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
# set (CMAKE_CXX_FLAGS "-std=c++11 ${CMAKE_CXX_FLAGS}")
# endif()
# else()
# set(CMAKE_CXX_STANDARD 11)
# endif()
project(PlanetWars2dRT-SDL2)
# Version number
set(VERSION_MAJOR "0")
set(VERSION_MINOR "0")
set(VERSION_MICRO "0")
# Configure a header file to pass some of the CMake settings
# to the source code.
configure_file (
"src/compilation_config.h.in"
"${PROJECT_BINARY_DIR}/compilation_config.h"
)
# Add the binary tree to the search path for include files
# so that we will find compilation_config.h
include_directories("${PROJECT_BINARY_DIR}")
set(LIBRARY_OUTPUT_PATH lib/${CMAKE_BUILD_TYPE})
set(EXECUTABLE_OUTPUT_PATH bin/${CMAKE_BUILD_TYPE})
include_directories(src/)
file(
GLOB_RECURSE
source_files
src/*
)
add_executable(planet-wars-2d-rt-sdl2 ${source_files})
#include(ExternalProject)
#ExternalProject_Add(PlanetWars2dRT PREFIX externals/core/)
include_directories(externals/core/src/utils/ externals/core/src/specific/)
add_subdirectory(externals/core/)
#find_package(PlanetWars2dRT-core REQUIRED)
include(FindPkgConfig)
pkg_search_module(SDL2 REQUIRED sdl2)
pkg_search_module(SDL2GFX REQUIRED SDL2_gfx)
include_directories(${SDL2_INCLUDE_DIRS} ${SDL2IMAGE_INCLUDE_DIRS})
target_link_libraries(
planet-wars-2d-rt-sdl2
planet-wars-2d-rt-core
${SDL2_LIBRARIES} ${SDL2GFX_LIBRARIES}
)
那是prj2树的简化版本:
.
├── build (with CMake stuff generated with "cmake ..")
├── CMakeLists.txt
├── externals
│ └── core
│ ├── build (with CMake stuff generated with "cmake ..")
│ ├── CMakeLists.txt
│ ├── makefile
│ └── src
├── makefile
├── README.md
└── src
├── compilation_config.h.in
└── planet-wars-2d-rt-sdl2.cpp
如何使用CMake编译prj2“SDL2”中的prj1“core”库,然后将prj1的库与prj2(再次使用CMake)链接?
如果您的解决方案不适用于非GNU / Linux操作系统,则不是大问题。注意:我的PC在Debian GNU / Linux 8“Jessie”上运行。
问候。
最佳答案
我无法访问您的repo https://gitlab.com/RyDroid/PlanetWars2dRT-SDL2/,也许服务器已关闭以进行维护。如果我正确理解了您的问题,则可以创建如下结构:
根/
在CMakeLists.txt [1]中,您应该声明项目名称,所需的软件包,通用标志,包含路径等:
cmake_minimum_required( VERSION 2.x )
project(name)
include_directories(inc inc/core inc/SDL2 inc/SthElse)
add_subdirectory(src)
在子目录src的CMakeLists.txt [2]中,您应该声明您的主可执行文件,还应在prj1和prj2中添加子目录
add_subdirectory(core)
add_subdirectory(SDL2)
add_executable(main main.cpp)
target_link_libraries(main core SDL2 SomeOtherLib)
最后,在lib目录中的CMakeLists.txt [3] && [4]中,您应该声明静态库:
add_library(core STATIC ${YourSourceFiles})
这种方法一直对我有用。如果您曾经将“core”和“SDL2”作为独立的二进制文件进行编译和运行,那么也许您将不得不对其进行一些重组。