> On 08/21/2017 04:20 PM, Christian Stadelmann wrote: > > I think ABI compatibility is achieved by shipping source code only in > the -devel packages (similar to what Perl does).
No, you are writing about API stability. Source code may provide API stability, but no ABI stability. ABI stability is about making sure that any public (exported) symbol is generated the same way on every compilation with any compiler version. This affects e.g. the order of fields in structs or the way how parameters are laid out in RAM and registers before a function call happens. This cannot be done by source code but requires compiler work. With perl (and other interpreters such as python), API stability (usually) induces ABI stability because the interpreter of any perl package is the same, so it only needs internal ABI stability. Java is compiled to some intermediate code with the interpreter providing backwards compatibiliy for previous versions. In C++, ABI breaks only happen when the compiler gets updated, which only happens on rawhide or pre-alpha testing phase and is followed by a rebuild. Still you may ship any update to any C++ package without breaking ABI or the need to recompile all dependend packages. Boost is an exception here. I have no idea about Ocaml and Go. Please note: In Rust, fixing any bug in the standard library will require _every_ rust package to be recompiled. This is quite different from C++ or Java or perl. _______________________________________________ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org
