According to the manual, I have to use the -shared flag to compile a library. But I get the following error:
link: GHC not built to link this way: LinkDynLib Guess I have to recompile ghc ! 2010/1/3 Jean-Denis Koeck <jdko...@gmail.com> > Hello, > I'm using the following cabal file to build a shared library with ghc: > > Build-Type: Simple > Executable libmylibrary.dll > If os(windows) > CPP-Options: -DWIN32 > Extensions: ForeignFunctionInterface > Build-Depends: ... > Main-Is: libmylibrary.hs > Ghc-Options: -W --make -no-hs-main -optl-shared -optl-s -O2 > > The resulting library is called from a C++ graphical user interface (using > Qt), > which worked great so far on Windows and Linux. > > However, the compilation fails on MacOS X: > > Undefined symbols: > "_ZCMain_main_closure", referenced from: > _ZCMain_main_closure$non_lazy_ptr in libHSrts.a(Main.o) > "___stginit_ZCMain", referenced from: > ___stginit_ZCMain$non_lazy_ptr in libHSrts.a(Main.o) > ld: symbol(s) not found > collect2: ld returned 1 exit status > > I don't know much about shared libraries, even less about them on MacOS X > :( > Any idea ? > > Jean-Denis Koeck >
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