-fPIC 编译标志有什么作用? [英] What does the -fPIC compilation flag does?

问题描述

-fpic 标志有什么作用?我想安装一个库(OpenSFM)，据说它需要构建和安装 Ceres Solver使用 -fPIC 编译标志.

What the -fpic flag does? I want to install a library (OpenSFM) and it is stated that it will need the Ceres Solver built and installed with the -fPIC compilation flag.

问题是我已经安装了没有 -fPIC 标志的 Ceres Solver 并且其他库已经依赖它.我该如何解决这个问题?

The problem is I already installed the Ceres Solver without the -fPIC flag and other library already depended on it. How can I solve this?

推荐答案

可以找到关于 -fPIC 的一个很好的解释 这里.

A good explaination for -fPIC can be found here.

我认为这里的主要问题是您是否仍然可以在不重建 Ceres Solver 的情况下继续安装 OpenSfM.据我所知，你不能.

I think the main question here is whether if you can still go ahead and install OpenSfM without rebuilding Ceres Solver. As far as I know, you can't.

您可以做的最直接的事情是重建 Ceres Solver 并重新安装 PIC 版本.

The most straightforward thing you can do is rebuild Ceres Solver and reinstall the PIC version.

cmake .. -DCMAKE_C_FLAGS=fPIC \
   -DCMAKE_CXX_FLAGS=-fPIC \ 
   -DSOMEOTHERARGUMENTSTHATYOUMIGHTHAVE

让我们知道它是如何为您服务的.:)

Let us know how it worked out for you. :)

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