C++ 使用 CMake 编译静态可执行文件
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Compiling a static executable with CMake
提问by Andrea
for a project I need to create an executable that includes all the libraries that I used (opencv, cgal) in order to execute it on a computer that has not those libraries. Currently, this is my CMakeLists.txt (I use linux).
对于一个项目，我需要创建一个可执行文件，其中包含我使用的所有库（opencv、cgal），以便在没有这些库的计算机上执行它。目前，这是我的 CMakeLists.txt（我使用 linux）。
cmake_minimum_required(VERSION 2.8)
#set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -Wall")
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -Wall -O2")
project( labeling )
set(CMAKE_FIND_LIBRARY_SUFFIXES ".a")
add_library(OpenCV STATIC IMPORTED)
add_library(CGAL STATIC IMPORTED COMPONENTS Core)
add_library(GMP STATIC IMPORTED)
find_package(OpenCV REQUIRED)
find_package(CGAL QUIET COMPONENTS Core )
find_library(GMP_LIBRARY gmp /usr/lib)
include(src)
include( ${CGAL_USE_FILE} )
include( CGAL_CreateSingleSourceCGALProgram )
set(EXECUTABLE_OUTPUT_PATH ../bin)
set(CMAKE_EXE_LINKER_FLAGS "-static-libgcc -static-libstdc++")
include_directories( src )
include_directories( ${OpenCV_INCLUDE_DIRS} )
file(GLOB_RECURSE nei_SRC "src/*.cpp")
add_executable( nei_segmentation ${nei_SRC})
target_link_libraries( nei_segmentation ${OpenCV_LIBS} ${GMP_LIBRARY})
In such a way only GMP and some other c++ libraries are included in my executable. My question is: How can I create a makefile in order to automatically including all the libraries in a static manner and creating only a "big" executable that contains all the libraries? Can you help me?
通过这种方式，我的可执行文件中只包含 GMP 和其他一些 C++ 库。我的问题是：如何创建一个 makefile 以便以静态方式自动包含所有库并仅创建一个包含所有库的“大”可执行文件？你能帮助我吗？
回答by madduci
As global CMake settings, add these lines before add_executable, valid for gcc/clang:
作为全局 CMake 设置，在 add_executable 之前添加这些行，对 gcc/clang 有效：
SET(CMAKE_FIND_LIBRARY_SUFFIXES ".a")
SET(BUILD_SHARED_LIBS OFF)
SET(CMAKE_EXE_LINKER_FLAGS "-static")
On Modern CMake(3.x+ - target_link_libraries doc), you can apply the flag to specific targets, in this way:
在Modern CMake(3.x+ - target_link_libraries doc) 上，您可以通过以下方式将该标志应用于特定目标：
target_link_libraries(your_target_name -static)
If you're using MSVC, you have to set the compiler and linker flags:
如果您使用MSVC，则必须设置编译器和链接器标志：
target_compile_options(your_target_name PUBLIC/PRIVATE /MT)
target_link_options(your_target_name PUBLIC/PRIVATE /INCREMENTAL:NO /NODEFAULTLIB:MSVCRT)
and if you are using MFC, you need to specify the flag to 1see here:
如果您使用的是 MFC，则需要指定标志以1在此处查看：
set(CMAKE_MFC_FLAG 1)
回答by Logicae
Add these lines after add_executable(MyExec "main.c")(for exemple) :
在add_executable(MyExec "main.c")（例如）之后添加这些行：
target_link_libraries(MyExec PUBLIC "-static")
target_link_libraries(MyExec PUBLIC "-static")
or before : link_libraries("-static")
或之前： link_libraries("-static")
