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标题: 请教cygwin下wpcap的链接问题. 谢先 [打印本页]

作者: 傻旦 时间: 2008-06-10 17:21
标题: 请教cygwin下wpcap的链接问题. 谢先

gcc -Wall -Wno-format-zero-length -o demo_test -lpthread -lwpcap demo_test.o
demo_test.o:demo_test.c:(.text+0x4ab): undefined reference to `_pcap_sendpacket'
demo_test.o:demo_test.c

.text+0x611): undefined reference to `_pcap_next_ex'
demo_test.o:demo_test.c:(.text+0x9b5): undefined reference to `_pcap_open_live'
demo_test.o:demo_test.c

.text+0xa50): undefined reference to `_pcap_compile'
demo_test.o:demo_test.c:(.text+0xa9f): undefined reference to `_pcap_close'
demo_test.o:demo_test.c

.text+0xacf): undefined reference to `_pcap_setfilter'
demo_test.o:demo_test.c:(.text+0xb1e): undefined reference to `_pcap_close'
demo_test.o:demo_test.c

.text+0xba9): undefined reference to `_pcap_close'
demo_test.o:demo_test.c:(.text+0xbf8): undefined reference to `_pcap_close

nm libwpcap的结果,可以看到Text段中有相关的接口.
d000010.o:
00000000 i .idata$4
00000000 i .idata$5
00000000 i .idata$6
00000000 i .idata$7
00000000 t .text
U __head_wpcap_dll
00000000 I __imp__pcap_close
00000000 T _pcap_close

反汇编的结果比较奇怪:

00000000 <.idata$6>:
0: 0a 00                   or    (%eax),%al
2: 70 63                   jo    67 <_pcap_compile+0x67>
4: 61                      popa
5: 70 5f                   jo    66 <_pcap_compile+0x66>
7: 63 6f 6d                arpl %bp,0x6d(%edi)
a: 70 69                   jo    75 <_pcap_compile+0x75>
c: 6c                      insb (%dx),%es:(%edi)
d: 65 00 00                add %al,%gs:(%eax)

d000010.o:    file format pe-i386

Disassembly of section .text:

00000000 <_pcap_close>:
0: ff 25 00 00 00 00       jmp *0x0
6: 90                      nop
7: 90                      nop
Disassembly of section .idata$7:

00000000 <.idata$7>:
0: 00 00                   add %al,(%eax)
...
Disassembly of section .idata$5:

00000000 <__imp__pcap_close>:
0: 00 00                   add %al,(%eax)
...
Disassembly of section .idata$4:

00000000 <.idata$4>:
0: 00 00                   add %al,(%eax)
...
Disassembly of section .idata$6:

[ 本帖最后由傻旦于 2008-6-10 17:51 编辑 ]

作者: 傻旦 时间: 2008-06-10 22:28
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