Question

我试图在ubuntu上手动链接外部库和c ++。由于这是我的第一个c ++项目，我缺少一些基础知识。这是我的代码（这试图连接到传播）：

#include <iostream>
#include <sp.h>

using namespace std;

int main() {
    int status;
    status = SP_connect("4803@localhost", "test1", 0, 0, 0, 0);
    cout << "done\n";
    return 0;
}

如果我只是尝试用

运行它

user@computer:~/thesis$ g++ -o example1 test.cpp
/tmp/cczPLZQ0.o: In function `main':
test.cpp:(.text+0x39): undefined reference to `SP_connect'
collect2: ld returned 1 exit status

据我所知，我需要链接一个库，我试着用-l

来做

kristjan@kupo:~/thesis$ g++ -o example1 test.cpp -llibspread
/usr/bin/ld: cannot find -llibspread
collect2: ld returned 1 exit status

我也试过这个（我在黑暗中拍摄）：

user@computer:~/thesis$ g++ -o example1 test.cpp $(pkg-config -cflags /usr/local/lib/libspread) $(pkg-config --libs /usr/local/lib/libspread)

-cflags: unknown option
Package /usr/local/lib/libspread was not found in the pkg-config search path.
Perhaps you should add the directory containing `/usr/local/lib/libspread.pc'
to the PKG_CONFIG_PATH environment variable
No package '/usr/local/lib/libspread' found
/tmp/ccU8GTC2.o: In function `main':
test.cpp:(.text+0x39): undefined reference to `SP_connect'
collect2: ld returned 1 exit status

任何帮助都将不胜感激。

Answer 1

正如@Mat所说，你应该使用-lspread并省略lib前缀。

如何在Ubuntu上手动链接g ++中的库

1 个答案: