c++ - 为什么这个构建错误？

Question

我尝试使用 cygwin 在 Win 8.1 上构建 hydra，但在运行 make 时出现此构建错误:

   -DHAVE_MATH_H
hydra-pop3.o:hydra-pop3.c:(.text+0x697): undefined reference to `MD5_Init'
hydra-pop3.o:hydra-pop3.c:(.text+0x697): relocation truncated to fit: R_X86_64_PC32 against undefined symbol `MD5_Init'
hydra-pop3.o:hydra-pop3.c:(.text+0x6f2): undefined reference to `MD5_Update'
hydra-pop3.o:hydra-pop3.c:(.text+0x6f2): relocation truncated to fit: R_X86_64_PC32 against undefined symbol `MD5_Update'
hydra-pop3.o:hydra-pop3.c:(.text+0x70d): undefined reference to `MD5_Update'
hydra-pop3.o:hydra-pop3.c:(.text+0x70d): relocation truncated to fit: R_X86_64_PC32 against undefined symbol `MD5_Update'
hydra-pop3.o:hydra-pop3.c:(.text+0x71e): undefined reference to `MD5_Final'
hydra-pop3.o:hydra-pop3.c:(.text+0x71e): relocation truncated to fit: R_X86_64_PC32 against undefined symbol `MD5_Final'
/usr/lib/gcc/x86_64-pc-cygwin/4.8.2/../../../../x86_64-pc-cygwin/bin/ld: hydra-pop3.o: bad reloc address 0x0 in section `.pdata'
/usr/lib/gcc/x86_64-pc-cygwin/4.8.2/../../../../x86_64-pc-cygwin/bin/ld: final link failed: Invalid operation
collect2: error: ld returned 1 exit status
Makefile:51: recipe for target 'hydra' failed
make: *** [hydra] Error 1

可以做什么？我可以毫无错误地运行 ./configure，但是运行 make 失败了。

Answer 1

检查 LIB_PATH，您需要包含导出“MD5_Init”函数的 lib 文件。