我有 2 个项目(prj1 和 prj2)。一个(prj2)依赖于另一个(prj1),它是一个静态库。我来用 CMake 分别编译它们。
但是我需要将一个(prj1)集成到另一个(prj2)。所以我希望CMake在另一个(prj2)之前编译静态库(prj1),然后链接静态库。我尝试了一些东西,但 id 没有用。
- prj1“核心”是https://gitlab.com/RyDroid/PlanetWars2dRT-core
- prj2 "SDL2" 是https://gitlab.com/RyDroid/PlanetWars2dRT-SDL2/(见分支添加核心)
在 prj2 中,externals/core 是一个 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(没有成功)这个CMakeLists.txt:
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}
)
这是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 库与 prj2 链接(再次使用 CMake)?
如果您的解决方案不适用于非 GNU/Linux 操作系统,那也不是什么大问题。注意:我的 PC 运行在 Debian GNU/Linux 8 "Jessie" 上。
问候。