flex lexer - MinGW gcc error: "undefined reference to `yylloc'" -

Where can I find yylloc? I have included libfl.a (-lfl) in the GCC command line, the GnuWin32 / bin and the GnuWin32 / lib directory are added to the system variable LIB, all files in GnuWin32 have been searched through - neither I nor GCC Can get.

This is the bias variable, it can not be used without a bison-generated file.