build-gnu.sh: Use multicall to reduce build time (no selinux)

Author: oech3

util/build-gnu.sh

@@ -104,11 +104,12 @@ else
 fi
 cd -
 
+[ "${SELINUX_ENABLED}" != 1 ] && export MULTICALL=y # Reduce time to build
 # Pass the feature flags to make, which will pass them to cargo
 "${MAKE}" PROFILE="${UU_MAKE_PROFILE}" CARGOFLAGS="${CARGO_FEATURE_FLAGS}"
 # min test for SELinux
 [ "${SELINUX_ENABLED}" = 1 ] && touch g && "${UU_MAKE_PROFILE}"/stat -c%C g && rm g
-
+[ "${MULTICALL}" = y ] && (cd "${UU_BUILD_DIR}" && for b in $(./coreutils --list); do cp -vf coreutils "$b"; done)
 cp "${UU_BUILD_DIR}/install" "${UU_BUILD_DIR}/ginstall" # The GNU tests rename this script before running, to avoid confusion with the make target
 # Create *sum binaries
 for sum in b2sum b3sum md5sum sha1sum sha224sum sha256sum sha384sum sha512sum; do