在GCC中链接包含循环引用的库 [英] Linking Libraries that contain circular references in GCC

问题描述

有两个库会导致问题。 Libsupport为应用程序提供了一个终端。它依靠libcpu提供串行链接，定时和同步。 Libcpu依靠libsupport为串行数据提供排队等等。

如果我先指定libsupport，则链接libcpu无法与队列函数链接。我指定libcpu首先lib支持不能链接串行链接（和更多）函数。

它看起来像GCC只解析一次库并丢弃任何未使用的对象。 / p>

我可以让gcc多次解析库或包含所有对象吗？

解决方案

  gcc ... -lsupport -lcpu -lsupport -lcpu 
  

- >每提到一个库，都会导致解析库之前的库（但不一定是之后指定的库），这就是为什么您将来可能需要指定更多-lsupport -lcpu。

或者，尝试 - start-group -lsupport - lcpu --end-group 一次。

I am trying to link an application with multiple static libraries in GCC.

There are two libraries that cause problems. Libsupport provides a terminal for the application. It relies on libcpu to provide a serial link, timing and syncronisation. Libcpu relies on libsupport to provide queueing for serial data and more.

If I specify libsupport first when linking libcpu cannot be linked with the queue functions. Is I specify libcpu first lib support can not link the serial link (and more) functions.

It looks like GCC parses a library only once and discard any unused objects.

Can I ask gcc to parse libraries multiple times or to include all objects?

解决方案

gcc ... -lsupport -lcpu -lsupport -lcpu

-> Each mention of a library will cause resolution of libraries that came before it (but not necessarily ones specified afterwards), which is why you may need to specify more "-lsupport -lcpu" in future.

Alternatively, try --start-group -lsupport -lcpu --end-group once.

这篇关于在GCC中链接包含循环引用的库的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！