Re: libtool uses cc to link a mixed C/C++ project and fails to find operator new
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. Bob 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. Regards, Roumen ___ https://lists.gnu.org/mailman/listinfo/libtool
Re: libtool uses cc to link a mixed C/C++ project and fails to find operator new
On 2019-06-24 09:55, Roumen Petrov wrote: 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. configure and Makefile.in contain -lstdc++. These could be different between systems. On FreeBSD it should be -lc++. It worked when I patched these lines, but this is error-prone because some other toolchains might use a different C++ library. Once the error-prone -lstdc++ are removed, libtool fails because it links with the C compiler. Yuri ___ https://lists.gnu.org/mailman/listinfo/libtool
Re: libtool uses cc to link a mixed C/C++ project and fails to find operator new
On Mon, 24 Jun 2019, Roumen Petrov wrote: Reporter still does not provide feedback with information from configuration time (requested in a previous post) => resolution is - broken build environment. I think the problem is an unreasonable expectation which is becoming more unreasonable as time goes by. C++ supports exceptions and C does not. If the run-time used does not provide an exception handling framework then there will be a core dump either when the C++ exception is initially thrown, or at the boundary of C/C++. Bob -- Bob Friesenhahn bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ Public Key, http://www.simplesystems.org/users/bfriesen/public-key.txt ___ https://lists.gnu.org/mailman/listinfo/libtool
