如何告诉gcc（或ld）链接到标准c和c ++库的调试版本 [英] How do I tell gcc (or ld) to link against debug versions of the standard c and c++ libraries

问题描述

我有调试版本的libstdc ++和libc等等，并希望链接到他们。他们住在/ usr / lib / debug而不是/ usr / lib。任何想法？

解决方案

假设Linux，

1. 静态库：向链接器命令行中添加 -L / usr / lib / debug 。 gcc / ld 将在默认系统目录之前查找。使用 ldd 命令来验证是否链接了正确的库版本（仅限共享库）。


2. 共享库：set LD_LIBRARY_PATH = usr / lib / debug ，并且您的应用程序将从那里接收库，即使没有步骤1，只要有一个库的版本，这很可能是如果你正在安装

这是一个好主意，但是，因为一些库可能只是静态形式。 p>

I have debug versions of libstdc++ and libc, among others, and would like to link against them. They live in /usr/lib/debug as opposed to /usr/lib. Any ideas?

解决方案

Assuming Linux,

1. Static libraries: add a -L/usr/lib/debug to your linker command line. gcc/ld will look there before default system directories. Use ldd command to verify that correct library versions were linked against (shared libraries only).
2. Shared libraries: set LD_LIBRARY_PATH=usr/lib/debug, and your application will pick up libraries from there even without step 1, as long as there is a version of a library, which is very likely if you are installing with distribution's package manager.

It's a good idea to do both, though, as some libraries may be only in static form.

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