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I'm playing around with http://www.erlang.org/doc/tutorial/nif.html on OSX 10.6 Snow Leopard. and I'm having some trouble running the example.

I compile using :

gcc -o complex_nif.so -fpic -I/usr/local/lib/erlang/usr/include -flat_namespace -undefined suppress complex.c complex_nif.c

and run in erlang using:

Erlang R15B01 (erts-5.9.1) [source] [smp:4:4] [async-threads:0] [hipe] [kernel-poll:false]

Eshell V5.9.1  (abort with ^G)
1> c(complex).
{error,on_load_failure}

=ERROR REPORT==== 4-Apr-2013::15:24:51 ===
Error in process <0.37.0> with exit value: {{badmatch,{error,{load_failed,"Failed to load NIF library: 'dlopen(./complex_nif.so, 2): no suitable image found.  Did find:\n      ./complex_nif.so: mach-o, but wrong architecture'"}}},[{complex,init,0,[{file,"... 


=ERROR REPORT==== 4-Apr-2013::15:24:51 ===
The on_load function for module complex returned {{badmatch,
                                                   {error,
                                                    {load_failed,
                                                     "Failed to load NIF library: 'dlopen(./complex_nif.so, 2): no suitable image found.  Did find:\n\t./complex_nif.so: mach-o, but wrong architecture'"}}},
                                                  [{complex,init,0,
                                                    [{file,...},{...}]},
                                                   {code_server,
                                                    '-handle_on_load/4-fun-0-',
                                                    1,
                                                    [{...}|...]}]}

I see that I'm finding the .so file. but erlang does not like the achitecture that it had been compiled for, what architecture would erlang prefer?

4

1 回答 1

3

验证您的 Erlang 运行时系统使用的架构。例如：

$ which erlc
/usr/local/bin/erlc
$ file /usr/local/bin/erlc
/usr/local/bin/erlc: Mach-O 64-bit executable x86_64

确保您的库与上述架构匹配：

$ file complex_nif.so
complex_nif.so: Mach-O 64-bit executable x86_64

如果它们不匹配，请使用-arch i386(or -arch x86_64) 标志编译库。

于 2013-04-04T23:14:14.780 回答