games-roguelike/dwarf-fortress does not work when compiled with GCC-5. A solution is known and verified to work. Reproducible: Always Steps to Reproduce: 1. gcc-config to any gcc 5.x.0 version. 2. build dwarf-fortress (any version). Actual Results: It can't run due to missing symbol. Expected Results: . Adding "-D_GLIBCXX_USE_CXX11_ABI=0" to CFLAGS in files/Makefile in the ebuild directory fixes this issue. And this should work regardless of GCC version. A similar fix can be found in the following github commit from the project 'dwarf-fortress-unfuck', where the author encounters the similar linkage problem and resolves it in the same way: https://github.com/svenstaro/dwarf_fortress_unfuck/commit/a89840de15d9d2090c49159e5bfc84f7520814ad
Well, your updated summary is slightly misleading -- dwarf-fortress does seem to build with GCC 5. However, in this case the binary executable is closed source, and the library is open source and gets built by Portage. Therefore, a successful build does not correspond to a correct linkage between the library and the executable. The problem only manifests itself when you actually try to run dwarf fortress. I hope this clarifies what happened :)
Fixed, thanks for the report.
