> __WIN32__ use mingw32_HOST_OS > __MACOSX__
darwin_HOST_OS On Sat, 16 Feb 2013 01:05:13 +1100 Andrew Cowie <and...@operationaldynamics.com> wrote: > I've got a piece of code that looks like this: > > baselineContextSSL :: IO SSLContext > baselineContextSSL = do > ctx <- SSL.context > SSL.contextSetDefaultCiphers ctx > #if defined __MACOSX__ > SSL.contextSetVerificationMode ctx SSL.VerifyNone > #elif defined __WIN32__ > SSL.contextSetVerificationMode ctx SSL.VerifyNone > #else > SSL.contextSetCADirectory ctx "/etc/ssl/certs" > SSL.contextSetVerificationMode ctx $ > SSL.VerifyPeer True True Nothing > #endif > return ctx > > all very nice (this being necessary because apparently the non-free > operating systems don't store their certs in a reliably discoverable > place; bummer). > > That, however, is not the problem. After all, this sort of thing is > what #ifdefs are for. The problem is needing to get an appropriate > symbol based on what OS you're using defined. > > I naively assumed there would be __LINUX__ and __MACOSX__ and > __WIN32__ defined by GHC because, well, that's just the sort of > wishful thinking that powers the universe. > > So my question is: what's an appropriate Haskell mechanism for > building code that is OS / arch / distro specific? It's not like I > have autoconf running generating me a config.h I could #include, > right? > > This feels simple and an appropriate use of CPP; even the symbol names > look just about like what I would have expected; stackoverflow said > so, must be true. Just need to get the right symbol defined at build > time. > > Any suggestions? > > AfC > Sydney > _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
