Question

我在OSX 10.6 Snow Leopard上玩http://www.erlang.org/doc/tutorial/nif.html。我在运行这个例子时遇到了一些麻烦。

我使用编译：

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

使用以下命令在erlang中运行：

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,
                                                    [{...}|...]}]}

我看到我找到了.so文件。但是erlang不喜欢它编译的架构，erlang更喜欢哪种架构？

Answer 1

验证Erlang运行时系统使用的体系结构。 E.g：

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

确保您的库符合上述架构：

$ 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（或-arch x86_64）标记编译库。

erlang运行时的错误架构？

1 个答案: