在c ++中修剪静态库 [英] Pruning a static library in c++

问题描述

我试图通过构建一个静态库，然后发运构建的库与一些头文件定义该类和使用它需要的接口，公开一个明确定义的类。我有工作，但我遇到的问题是图书馆是巨大的。它有来自整个项目的每个单个对象文件，我需要的是一个子集。如果我做一个简单的main.cpp文件并包含并使用那个单一的类，那么我得到一个只有我使用的库的20％的输出文件。有没有办法告诉链接器从一个给定的地方开始，并修剪一切，像在可执行的情况下？

编辑：我忘了提到我使用gcc在cygwin和linux（虽然我想要一个解决方案，工作与visual studio，我们通常使用它为开发，但主要部署在linux）

解决方案

创建共享库。它的行为就像一个可执行文件从链接的角度来看。它应该做你提到你在可执行文件上看到的废弃。

I am trying to expose a single well defined class by building a static library and then shipping the built library with a few header files that define that class and the interfaces needed to use it. I have that working but the problem I am running into is the library is gigantic. It has every single object file from the whole project and all I need is a subset. If I make a simple main.cpp file and include and use that single class then I get a output file that is only as big as the 20% of the library I am using. Is there a way to tell the linker to start from a given place and prune everything else like in the executable case?

EDIT: I forgot to mention that I am using gcc on cygwin and linux (though I would like a solution that worked with visual studio as well, we generally use that for development but deploy primarily on linux)

解决方案

Make a shared library. It behaves like an executable from the point of view of linking etc. It should do the discarding you mentioned you saw on the executable.

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