Question

我在OS X Lion上构建hmatrix library时遇到了问题。查看.cabal文件，它需要gsl库，所以我用macports安装它。 .a文件位于/ opt / local / lib中，而.h文件位于/ opt / local / include / gsl

正如建议here我将内置类型从Custom更改为Simple。（没有那个改变我得到了类似的错误）。

当我使用cabal configure时，我得到以下输出：

* Missing C library: gsl
This problem can usually be solved by installing the system package that
provides this library (you may need the "-dev" version). If the library is
already installed but in a non-standard location then you can use the flags
--extra-include-dirs= and --extra-lib-dirs= to specify where it is.

所以我尝试cabal --extra-include-dirs=/opt/local/include --extra-lib-dirs=/opt/local/lib configure，但我仍然遇到同样的错误。我可以编译和链接包含gsl的c程序。 cabal寻找什么文件？如果我有正确的文件，我该如何告诉它如何找到它们？

libgsl.a是一个通用二进制文件：

$ file /opt/local/lib/libgsl.a
    /opt/local/lib/libgsl.a: Mach-O universal binary with 2 architectures
    /opt/local/lib/libgsl.a (for architecture x86_64):  current ar archive random library
    /opt/local/lib/libgsl.a (for architecture i386):    current ar archive random library

ghc看起来像是64位：

$ ghc --info
 [("Project name","The Glorious Glasgow Haskell Compilation System")
 ,("GCC extra via C opts"," -fwrapv")
 ,("C compiler command","/usr/bin/llvm-gcc")
 ,("C compiler flags"," -m64 -fno-stack-protector  -m64")
 ,("ar command","/usr/bin/ar")
 ,("ar flags","clqs")
 ,("ar supports at file","NO")
 ,("touch command","touch")
 ,("dllwrap command","/bin/false")
 ,("windres command","/bin/false")
 ,("perl command","/usr/bin/perl")
 ,("target os","OSDarwin")
 ,("target arch","ArchX86_64")
 ,("target word size","8")
 ,("target has GNU nonexec stack","False")
 ,("target has subsections via symbols","True")
 ,("Project version","7.4.2")
 ,("Booter version","7.4.2")
 ,("Stage","2")
 ,("Build platform","x86_64-apple-darwin")
 ,("Host platform","x86_64-apple-darwin")
 ,("Target platform","x86_64-apple-darwin")
 ,("Have interpreter","YES")
 ,("Object splitting supported","NO")
 ,("Have native code generator","YES")
 ,("Support SMP","YES")
 ,("Unregisterised","NO")
 ,("Tables next to code","YES")
 ,("RTS ways","l debug  thr thr_debug thr_l thr_p  dyn debug_dyn thr_dyn thr_debug_dyn")
 ,("Leading underscore","YES")
 ,("Debug on","False")
 ,("LibDir","/usr/local/Cellar/ghc/7.4.2/lib/ghc-7.4.2")
 ,("Global Package DB","/usr/local/Cellar/ghc/7.4.2/lib/ghc-7.4.2/package.conf.d")
 ,("Gcc Linker flags","[\"-m64\"]")
 ,("Ld Linker flags","[\"-arch\",\"x86_64\"]")
 ]

Answer 1

作为mac-ports的替代方案，您可以使用mac的nix包管理器。它可以很好地处理通过它可用的库的cs dependancies。总的来说，我对mac上的任何其他软件包管理器都感到满意。

不幸的是，与Linux不同，mac（darwin）没有通过nix提供尽可能多的二进制文件，因此安装ghc通常意味着等待它进行编译。

安装nix后安装ghc和hmatrix的命令是：

nix-env -iA nixpkgs-unstable.haskellPackages.ghc
nix-env -iA nixpkgs-unstable.haskellPackages.hmatrix

将为您处理所有需要的依赖项。

我刚刚在我的macbook pro上试过它，并且在从tutorial的前几页尝试命令后，hmatrix似乎在ghci中正常工作。

Answer 2

我不是一个mac人，但听起来你没有安装“-dev”版本。对于Mac，我怀疑除了gsl-devel之外，您还需要安装gsl。如果问题仍然存在，请验证您的库路径上是否有libgsl0-dev。

Haskell包缺少c库

2 个答案: