Adrian Pop <[email protected]> writes: > After I upgraded to gcc 5.2.0 I get some weird linking errors. > > Is it possible that the gcc 5.2.0 generates code that is > not linker compatible with libraries built with gcc 4.9.2?
I experienced similar problems after building a project with 5.2 with object files generated by 4.9 still around. A full rebuild fixed the problem. This does not indicate a bug in gcc, necessarily. Major gcc releases are allowed to break C++ ABI compatibility. [snip] > Additional question: > is it possible to downgrade to gcc 4.9.2 toolchain using pacman? Yes. Uninstall gcc 5.2. Get the package for 4.9.2 (pacman stores a copy of the installed packages on the local machine, so if you installed gcc 4.9.2 chances are that you already have the package.) But... you have to downgrade all other packages to their pre-5.2 versions (at least the C++ packages). Too much hassle, IMO. A better option is to simply rebuild everything, or do not upgrade to anything released along/after gcc 5.2. OTOH, the problem could happen because OpenSceneGraph was not rebuilt and uploaded after the gcc 5.2 release. If that's the case, create a bug report on Github (https://github.com/Alexpux/MINGW-packages) or get in touch with Alexey here or in irc. ------------------------------------------------------------------------------ _______________________________________________ Msys2-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/msys2-users
