cmake_minimum_required(VERSION 3.5) project(prc C) cmake_policy(SET CMP0135 OLD) add_subdirectory(src) include(ExternalProject) ExternalProject_Add(musl URL https://musl.libc.org/releases/musl-1.2.6.tar.gz URL_HASH SHA256=d585fd3b613c66151fc3249e8ed44f77020cb5e6c1e635a616d3f9f82460512a CONFIGURE_COMMAND /configure --prefix=${CMAKE_INSTALL_PREFIX} BUILD_COMMAND make INSTALL_COMMAND make )