gcc：与源文件位于同一文件夹中的链接库

Question

I'm trying to compile a C project using gcc . All source files and the .a library file are in the same folder . How can I successfully compile the project?

I've tried:

gcc -o test main.c IPT.c logitem_list.c -L -./ -libpt

But I receieve error:

/usr/bin/ld: cannot find -libpt
collect2: error: ld returned 1 exit status

Answer 1

You specify the directory to -L and the 'core' name to -l :

gcc -o test main.c IPT.c logitem_list.c -L . -lpt

When given -l pt , the linker looks for libpt.a or libpt.so or equivalents (extensions like .dylib or .sl or .dll or .lib on other platforms).

The -L -./ is suggesting that the linker look in a directory called 'dash dot', which is unlikely to exist and isn't where libpt.a is found anyway.

Answer 2

Because it's a static lib, you can also most easily just specify the file directly on the command line. Remember that a static library is just an indexed archive of object files:

gcc -o test main.c IPT.c logitem_list.c ./libpt.a

You can also do this with shared libraries, but you probably shouldn't.