如何在 Windows 的 CMake 中将多个静态库捆绑到单个库中 [英] How to bundle multiple static libraries into single library in CMake for windows

问题描述

我想在 CMake 中将五个静态库捆绑到一个库中.我该如何继续?

I want to bundle five static libraries into one library in CMake. How can I proceed for this?

像库 a、b、c、d 和 e 应该捆绑到 alpha_lib 中.

Like library a, b, c, d, and e should bundle into alpha_lib.

推荐答案

如果您使用的是 Visual Studio，则可以利用 Microsoft 库管理器 (LIB.exe) 将您的静态库合并为一个.您的 CMake 可以按照以下步骤操作:

If you are using Visual Studio, you can take advantage of the Microsoft Library Manager (LIB.exe) to combine your static libraries into one. Your CMake could follow these steps:

1. 使用find_program() 让 CMake 在您的系统上找到 MSVC lib.exe 工具.如果从 Visual Studio 命令提示符运行 cmake，find_program 可以自动定位 lib.exe，而无需使用可选的 PATHS 参数告诉它去哪里找.

1. Use find_program() to have CMake locate the MSVC lib.exe tool on your system. If you run cmake from the Visual Studio Command Prompt, find_program can locate lib.exe automatically, without using the optional PATHS argument to tell it where to look.

使用 CMake 的 add_custom_target() 命令使用合并库的语法调用lib.exe:

Use CMake's add_custom_target() command to call lib.exe using the syntax for merging libraries:

lib.exe /OUT:alpha_lib.lib  a.lib b.lib c.lib d.lib e.lib

你可以使用依赖于目标的生成器表达式 在自定义目标命令中让 CMake 解析您构建的库的位置.自定义目标将在您的 Visual Studio 解决方案中创建一个项目，该项目可以单独运行以将所有构建的静态库合并到一个库中.

You can use target-dependent generator expressions in the custom target command to have CMake resolve the locations of your built libraries. The custom target will create a Project in your Visual Studio solution that can be run separately to merge all of the built static libraries into one library.

您的 CMake 可能如下所示:

Your CMake could look something like this:

# Create the static libraries (a, b, c, d, and e)
add_library(a STATIC ${a_SOURCES})
...
add_library(e STATIC ${e_SOURCES})

# Tell CMake to locate the lib.exe tool.
find_program(MSVC_LIB_TOOL lib.exe)

# If the tool was found, create the custom target.
if(MSVC_LIB_TOOL)
    add_custom_target(CombineStaticLibraries
        COMMAND ${MSVC_LIB_TOOL} /OUT:$<TARGET_FILE_DIR:a>/alpha_lib.lib
            $<TARGET_FILE:a> 
            $<TARGET_FILE:b> 
            $<TARGET_FILE:c> 
            $<TARGET_FILE:d> 
            $<TARGET_FILE:e> 
        WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
    )
endif()

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