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Re: libtool uses cc to link a mixed C/C++ project and fails to find oper

From: Roumen Petrov
Subject: Re: libtool uses cc to link a mixed C/C++ project and fails to find operator new
Date: Mon, 24 Jun 2019 19:55:57 +0300
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Firefox/52.0 SeaMonkey/2.49.4

Dunno what is wrong in Yuri's FreeBSD environment

Bob Friesenhahn wrote:
On Sun, 23 Jun 2019, Yuri wrote:

So is there an easy way to override this and always use C++ way of linking?

To do this you might need to set LD or CC to your C++ compiler.  A better way is to make your main program be C++ since that assures it can work.

Consider that C++ exceptions can not be thrown into C code unless a special compiler option is used so that C supports the exception framework.  Without this you are likely to get a core dump.

C++ is very good at using C code but C code is not very good at using C++ code.


In my environment /usr/bin/cc is link to gcc , linked to gcc-5.5.0, and c++ is linked to g++, linked to g++-gcc-5.5.0.

In my environment.
At configure time both compiles are detected as usable. At build time I could see:
- for C code:
  CC foo
  CCLD bar
- for C++ code:
  CXX alice
  CXXLD bob
And projects builds just fine!
Conclusion - there is no defect neither in libtool nor in automake nor in project autotool files.

Reporter still does not provide feedback with information from configuration time (requested in a previous post) => resolution is - broken build environment.


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