On Sat, 18 Apr 2020 at 02:01, Hiisi <hi...@fedoraproject.org> wrote: > Hello, list! > Back in the day, Fedora had compat-gcc in repos. I can't find it any > longer. How do I install older versions of GCCC now? Say, I need GCC > 4.6. What's the best way of getting it on Fedora 31? >
Are you building from source or do you just need old libraries? I just built some apps for which library source code is not available (the provided binary libraries needed libgfortran.so.3)). CentOS 8 has a package with libgfortran.so.3, but many people use Ubuntu's version, and I have used the Ubuntu version on Fedora 31, CentOS 8, and debian 10. There was a period when the Linux Standards Base (LSB) goal of cross-distro binary compatibility worked pretty well. Current compilers should compile old sources, but may need some work to find the right flags. Legacy fortran code often uses tricks that hamper compiler attempts to prevent out-of-bounds memory access. The R project, which uses many libraries based on legacy Fortran codes, seems to have found a way around this. -- George N. White III
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