make run/demo on a linux base on a 64 bit centos distro - SYS_waitpid not declared

$ make run/demo ... Program core/core COMPILE cpu_session_extension.o In file included from /home/xx/source/genode/base-linux/src/core/cpu_session_extension.cc:11:0: /home/xx/source/genode/base-linux/src/core/include/core_linux_syscalls.h: In function ‘int lx_pollpid()’: /home/xx/source/genode/base-linux/src/core/include/core_linux_syscalls.h:115:20: error: ‘SYS_waitpid’ was not declared in this scope make[2]: *** [cpu_session_extension.o] Error 1 make[1]: *** [core.prg] Error 2 make: *** [gen_deps_and_build_targets] Error 2

Prior to this I had to run tool/toolchain since the other method for using genode's custom precompiled toolchain didnt work for me.