[liufan@liufan src]$ gcc -o extprg -I/usr/local/lib/erlang/lib/erl_interface-3.7.13/include/ -L/usr/local/lib/erlang/lib/erl_interface-3.7.13/lib complex.c erl_comm.c ei.c -lerl_interface -lei /usr/local/lib/erlang/lib/erl_interface-3.7.13/lib/libei.a(ei_pthreads.o): In function `__erl_errno_place': /home/liufan/workspace/sourceCode/otp_src_R16B01/lib/erl_interface/src/misc/ei_pthreads.c:194: undefined reference to `pthread_once' /home/liufan/workspace/sourceCode/otp_src_R16B01/lib/erl_interface/src/misc/ei_pthreads.c:200: undefined reference to `pthread_getspecific' /home/liufan/workspace/sourceCode/otp_src_R16B01/lib/erl_interface/src/misc/ei_pthreads.c:209: undefined reference to `pthread_setspecific' /home/liufan/workspace/sourceCode/otp_src_R16B01/lib/erl_interface/src/misc/ei_pthreads.c:210: undefined reference to `pthread_getspecific' /usr/local/lib/erlang/lib/erl_interface-3.7.13/lib/libei.a(ei_pthreads.o): In function `erl_errno_key_alloc': /home/liufan/workspace/sourceCode/otp_src_R16B01/lib/erl_interface/src/misc/ei_pthreads.c:171: undefined reference to `pthread_key_create' /usr/local/lib/erlang/lib/erl_interface-3.7.13/lib/libei.a(ei_pthreads.o): In function `ei_m_trylock': /home/liufan/workspace/sourceCode/otp_src_R16B01/lib/erl_interface/src/misc/ei_pthreads.c:138: undefined reference to `pthread_mutex_trylock' collect2: ld returned 1 exit status
经过再网上搜索得到需要再编译选项里加上-lpthread,经改正后，编译正常通过，效果如下：
[liufan@liufan src]$ gcc -o extprg -I/usr/local/lib/erlang/lib/erl_interface-3.7.13/include/ -L/usr/local/lib/erlang/lib/erl_interface-3.7.13/lib complex.c erl_comm.c ei.c -lerl_interface -lei -lpthread [liufan@liufan src]$
在运行的时候按照文档里的步骤执行
Erlang R16B01 (erts-5.10.2) [source] [64-bit] [smp:4:4] [async-threads:10] [hipe] [kernel-poll:false]
Eshell V5.10.2 (abort with ^G)
1> c(complex2).
complex2.erl:43: Warning: variable 'Reason' is unused
{ok,complex2}
2> comp
compile complex2
2> complex2:start("extprg").
<0.40.0>
3> sh: line 0: exec: extprg: not found
却和文档写的不一样，经过自己修改后正确
Erlang R16B01 (erts-5.10.2) [source] [64-bit] [smp:4:4] [async-threads:10] [hipe] [kernel-poll:false]
Eshell V5.10.2 (abort with ^G)
1> complex2:start("./extprg").
<0.34.0>
2>
2> complex2:foo(3).
4
3> complex2:bar(5).
10
4> complex2:st
start/1 stop/0
4> complex2:stop().
stop