CMake：如何构建共享和静态库，而不需要重新编译源两次 [英] CMake: How can I build a shared and a static library without recompiling the sources twice

问题描述

我想要构建一个静态和共享版本的同一个库，如下所述是否可以让CMake构建同一个库的静态和共享版本？

I want to build both a static and shared version of the same library as described Is it possible to get CMake to build both a static and shared version of the same library?

但是，源代码被编译两次，每个版本不一样。有没有办法避免这种情况？

However, the sources are compiled twice, one for each version which is not necessary. Is there any way to avoid this?

目前我有：

add_library(${LIB} SHARED ${${LIB}_srcs})

add_library(${LIB}_static STATIC ${${LIB}_srcs})

我需要改变什么才能只需要编译一次？ FYI。

What do I need to change in order to only need to compile once? FYI. I have the same compiler flags and defines.

推荐答案

由于CMake 2.8.8可以使用对象库：注意：将为一个库构建的对象文件重用到另一个lib目标。

Since CMake 2.8.8 you can use Object Library: CMake: reuse object files built for a lib into another lib target.

另请参阅 http：// www.cmake.org/Wiki/CMake/Tutorials/Object_Library

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