如何修复inflate / deflate函数的未定义引用？

Question

我正在尝试编译zlib示例中提供的现有代码，但它本身就给我错误：

nikhil@nikhil-Vostro-3500:~/zlib-1.2.8/examples$ gcc -o zpipe -g zpipe.c 
/tmp/ccVZzqsb.o: In function `def':
/home/nikhil/zlib-1.2.8/examples/zpipe.c:32: undefined reference to `deflateInit_'
/home/nikhil/zlib-1.2.8/examples/zpipe.c:40: undefined reference to `deflateEnd'
/home/nikhil/zlib-1.2.8/examples/zpipe.c:51: undefined reference to `deflate'
/home/nikhil/zlib-1.2.8/examples/zpipe.c:55: undefined reference to `deflateEnd'
/home/nikhil/zlib-1.2.8/examples/zpipe.c:66: undefined reference to `deflateEnd'
/tmp/ccVZzqsb.o: In function `inf':
/home/nikhil/zlib-1.2.8/examples/zpipe.c:90: undefined reference to `inflateInit_'
/home/nikhil/zlib-1.2.8/examples/zpipe.c:98: undefined reference to `inflateEnd'
/home/nikhil/zlib-1.2.8/examples/zpipe.c:109: undefined reference to `inflate'
/home/nikhil/zlib-1.2.8/examples/zpipe.c:116: undefined reference to `inflateEnd'
/home/nikhil/zlib-1.2.8/examples/zpipe.c:121: undefined reference to `inflateEnd'
/home/nikhil/zlib-1.2.8/examples/zpipe.c:130: undefined reference to `inflateEnd'
collect2: error: ld returned 1 exit status
nikhil@nikhil-Vostro-3500:~/zlib-1.2.8/examples$ 

如何正确编译文件？

Answer 1

您收到链接器错误，因为您没有告诉编译器链接包含您已使用过的函数的库。编译在 Ubuntu 上使用zlib的简单程序的常用方法是：

gcc -o foo foo.c -lz