Use C api without cmake

[CrezyDud]

i cant get it to work and cmake is not for me
i have a simple makefile is all i need

but i do get this error and i have no idea how to fix it

main.c:(.text+0xa): undefined reference to `b3ConnectPhysicsDirect'

The code is

#include "/usr/include/bullet/SharedMemory/PhysicsDirectC_API.h"

int main() {
	b3ConnectPhysicsDirect();
	return 0;
}

makefile command is simple cc