src/broadcom/qpu/qpu_pack.c:962:25: error: implicit declaration of function 'ffs' is invalid in C99 [-Werror,-Wimplicit-function-declaration] mux_b = ffs(desc->mux_b_mask) - 1;
Hello, I'm trying to compile mesa3d with v3D support, but I keep getting this error: src/broadcom/qpu/qpu_pack.c:962:25: error: implicit declaration of function 'ffs' is invalid in C99 [-Werror,-Wimplicit-function-declaration] mux_b = ffs(desc->mux_b_mask) - 1;