#262: Check for required C libraries during configure ----------------------------+----------------------------------------------- Reporter: guest | Owner: Type: enhancement | Status: new Priority: normal | Milestone: Component: Cabal library | Version: 1.2.3.0 Severity: normal | Resolution: Keywords: | Difficulty: normal Ghcversion: 6.8.2 | Platform: ----------------------------+----------------------------------------------- Comment (by duncan): I don't think the dependency analysis tickets are relevant here. Just knowing the required C headers and C libs and the include and library search paths is enough information to do the checks. It's just the same check that autoconf does and we can do it in a similar way. I'm not sure that being able to specify the foreign package dependencies would help here as we don't have a platform independent way of checking for them anyway. Those are more hints for package managers I'd say. So we should look up exactly how autoconf does these checks. My understanding is: * for headers it makes a small .c file that #includes the header and calls gcc/cpp to process the file. It passes the extra include search dirs with the -I flag. * for libs it makes a small .o file and calls gcc/ld with the -l and -L flags. If they fail then it means we cannot find the header/lib in question. -- Ticket URL: http://hackage.haskell.org/trac/hackage/ticket/262#comment:2 Hackage http://haskell.org/cabal/ Hackage: Cabal and related projects