I think you have suggested CMake in the past? ... I would support any build system that does Unix and Windows (which obviates autoconf)
On Sat, Jun 23, 2018, 05:59 Branko Čibej <br...@apache.org> wrote: > I've been working on getting Serf built on Windows x64 with OpenSSL > 1.1.0. I noticed that the function checks in SCons (Config.CheckFunc) > that we use to find OpenSSL features were not working correctly. After > some digging around in OpenSSL import libraries, SCons sources and the > config.log file, I found the following: > > 1. Behaviour of Config.CheckFunc(function[, header]): > > SCons generates a test program that contains a call to 'function()'. > This turns out to be quite problematic. > > 2. CheckFunc without the optional header parameter: > > When the test program is built, the compiler issues a warning about a > missing prototype for 'function', assumes it's an "extern returning > int". However, linking fails because the linker looks for the decorated > function name '_function', but the names exported from the OpenSSL > libraries (static or DLL import lib) are not decorated, so, just > 'function'. The names don't match, the link fails and SCons happily > assumes that the function does not exist. > > 3. CheckFunc /with/ the optional header parameter: > > The compiler now sees the function prototype and, since most functions > require parameters, errors out because the call to 'function()' as > generated by SCons is invalid. Again, SCons happily assumes that the > function does not exist. > > 4. Conclusion: > > I do have an opinion about Windows name decoration that's not for public > consumption. But in this case, I think that SCons is simply doing the > wrong thing by blindly generating the function call. For comparison, > autoconf does the same *but* also generates a prototype that overrides > any compiler builtins, and doesn't include any headers in the test program. > > Finally, has anyone successfully built 64-bit Serf with OpenSSL 1.1.0 on > Windows? If yes, how? Because I can't think of how this could be > possible with SCons failing the way it does. > > FWIW: a 32-bit build of Serf and OpenSSL works. > > -- Brane > >
