libc.a path while compiling libraries

Hi,

I'm re-compiling the LwIP libraries of the mcu_sdk_243x. 

I'm using the  gmake -s -f makefile.stack_freertos.am243x.r5f.ti-arm-clang PROFILE=debug   

 I get  the stack_freertos.am243x.r5f.ti-arm-clang.debug.lib

Is this process of gmake involves the libc.a or any other standard library ?

If so - from which path ?

Thanks,

Eli