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我想追查一個更大的問題，這裏是簡化的測試用例。在cygwin上爲getnetbyname鏈接哪個庫？
#include <netdb.h>
int main(int argc, char** argv)
{
getnetbyname("localhost");
return 0;
}
我編譯如下：
$ gcc -c -Werror -Wall foo.c
$ gcc foo.o
foo.o:foo.c:(.text+0x16): undefined reference to `getnetbyname'
collect2: error: ld returned 1 exit status
$ gcc foo.o -llwres
foo.o:foo.c:(.text+0x16): undefined reference to `getnetbyname'
collect2: error: ld returned 1 exit status
$ gcc foo.o -lwsock32
foo.o:foo.c:(.text+0x16): undefined reference to `getnetbyname'
collect2: error: ld returned 1 exit status
$ gcc foo.o -lmswsock
foo.o:foo.c:(.text+0x16): undefined reference to `getnetbyname'
collect2: error: ld returned 1 exit status
$ gcc foo.o -lamIcrazy
/usr/lib/gcc/i686-pc-cygwin/4.8.3/../../../../i686-pc-cygwin/bin/ld: cannot find -lamIcrazy
collect2: error: ld returned 1 exit status
不知道在哪裏可以從這裏走，我敢肯定Perl使用該參考，但我不能遵循編譯（還）。 gcc foo.o作品在CentOS 6
下面是與getnetbyname符號
Binary file /usr/lib/perl5/5.14/i686-cygwin-threads-64int/CORE/libperl.a matches
Binary file /usr/lib/w32api/libmswsock.a matches
Binary file /usr/lib/w32api/libwsock32.a matches
$ nm /usr/lib/w32api/libmswsock.a --demangle | grep -B 10 getnetbyname
dqsls00019.o:
00000000 b .bss
00000000 d .data
00000000 i .idata$4
00000000 i .idata$5
00000000 i .idata$6
00000000 i .idata$7
00000000 t .text
U _head_lib32_libmswsock_a
00000000 I [email protected]
00000000 T [email protected]
$ nm /usr/lib/w32api/libwsock32.a --demangle | grep -B 10 getnetbyname
duegs00043.o:
00000000 b .bss
00000000 d .data
00000000 i .idata$4
00000000 i .idata$5
00000000 i .idata$6
00000000 i .idata$7
00000000 t .text
U _head_lib32_libwsock32_a
00000000 I [email protected]
00000000 T [email protected]