+ SysTools.runLink dflags
+ ([ SysTools.Option verb
+ , SysTools.Option "-o"
+ , SysTools.FileOption "" output_fn
+ , SysTools.Option "-shared"
+ , SysTools.FileOption "-Wl,--out-implib=" (output_fn ++ ".a")
+ ]
+ ++ map (SysTools.FileOption "") o_files
+ ++ map SysTools.Option (
+ md_c_flags
+ ++ extra_ld_inputs
+ ++ lib_path_opts
+ ++ extra_ld_opts
+ ++ pkg_lib_path_opts
+ ++ pkg_link_opts
+ ))
+#elif defined(darwin_TARGET_OS)
+ -----------------------------------------------------------------------------
+ -- Making a darwin dylib
+ -----------------------------------------------------------------------------
+ -- About the options used for Darwin:
+ -- -dynamiclib
+ -- Apple's way of saying -shared
+ -- -undefined dynamic_lookup:
+ -- Without these options, we'd have to specify the correct dependencies
+ -- for each of the dylibs. Note that we could (and should) do without this
+ -- for all libraries except the RTS; all we need to do is to pass the
+ -- correct HSfoo_dyn.dylib files to the link command.
+ -- This feature requires Mac OS X 10.3 or later; there is a similar feature,
+ -- -flat_namespace -undefined suppress, which works on earlier versions,
+ -- but it has other disadvantages.
+ -- -single_module
+ -- Build the dynamic library as a single "module", i.e. no dynamic binding
+ -- nonsense when referring to symbols from within the library. The NCG
+ -- assumes that this option is specified (on i386, at least).
+ -- -Wl,-macosx_version_min -Wl,10.3
+ -- Tell the linker its safe to assume that the library will run on 10.3 or
+ -- later, so that it will not complain about the use of the option
+ -- -undefined dynamic_lookup above.
+ -- -install_name
+ -- Causes the dynamic linker to ignore the DYLD_LIBRARY_PATH when loading
+ -- this lib and instead look for it at its absolute path.
+ -- When installing the .dylibs (see target.mk), we'll change that path to
+ -- point to the place they are installed. Therefore, we won't have to set
+ -- up DYLD_LIBRARY_PATH specifically for ghc.
+ -----------------------------------------------------------------------------
+
+ let output_fn = case o_file of { Just s -> s; Nothing -> "a.out"; }
+
+ pwd <- getCurrentDirectory
+ SysTools.runLink dflags
+ ([ SysTools.Option verb
+ , SysTools.Option "-dynamiclib"
+ , SysTools.Option "-o"
+ , SysTools.FileOption "" output_fn
+ ]
+ ++ map SysTools.Option (
+ md_c_flags
+ ++ o_files
+ ++ [ "-undefined", "dynamic_lookup", "-single_module", "-Wl,-macosx_version_min","-Wl,10.3", "-install_name " ++ (pwd </> output_fn) ]
+ ++ extra_ld_inputs
+ ++ lib_path_opts
+ ++ extra_ld_opts
+ ++ pkg_lib_path_opts
+ ++ pkg_link_opts
+ ))
+#else
+ -----------------------------------------------------------------------------
+ -- Making a DSO
+ -----------------------------------------------------------------------------