build-gnu.sh: Refactor and use multicall for faster build

Author: oech3

util/build-gnu.sh

@@ -94,29 +94,31 @@ else
 fi
 cd -
 
-# Pass the feature flags to make, which will pass them to cargo
-"${MAKE}" PROFILE="${PROFILE}" CARGOFLAGS="${CARGO_FEATURE_FLAGS}"
+# Build with MULTICALL=y for faster build time
+if [ "${SELINUX_ENABLED}" != 1 ];then
+    "${MAKE}" MULTICALL=y PROFILE="${PROFILE}" CARGOFLAGS="${CARGO_FEATURE_FLAGS}"
+else
+# But it fails with SELinux by unknown reason
+    MULTICALL_UTILS="test hashsum true factor false yes"
+    "${MAKE}" MULTICALL=y UTILS="${MULTICALL_UTILS}" PROFILE="${PROFILE}" CARGOFLAGS="${CARGO_FEATURE_FLAGS}"
+    "${MAKE}" SKIP_UTILS="${MULTICALL_UTILS}" PROFILE="${PROFILE}" CARGOFLAGS="${CARGO_FEATURE_FLAGS}"
+fi
+for binary in $("${UU_BUILD_DIR}"/coreutils --list)
+    do ln -vf "${UU_BUILD_DIR}/coreutils" "${UU_BUILD_DIR}/${binary}"
+done
+ln -vf "${UU_BUILD_DIR}/install" "${UU_BUILD_DIR}/ginstall" # The GNU tests use renamed install to ginstall
 # min test for SELinux
 [ "${SELINUX_ENABLED}" = 1 ] && touch g && "${PROFILE}"/stat -c%C g && rm g
 
-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
-    sum_path="${UU_BUILD_DIR}/${sum}"
-    test -f "${sum_path}" || (cd ${UU_BUILD_DIR} && ln -s "hashsum" "${sum}")
-done
-test -f "${UU_BUILD_DIR}/[" || (cd ${UU_BUILD_DIR} && ln -s "test" "[")
-
 ##
 
 cd "${path_GNU}" && echo "[ pwd:'${PWD}' ]"
 
-# Any binaries that aren't built become `false` so their tests fail
+echo "Symlinking binaries that aren't built become `false` so their tests fail"
 for binary in $(./build-aux/gen-lists-of-programs.sh --list-progs); do
     bin_path="${UU_BUILD_DIR}/${binary}"
     test -f "${bin_path}" || {
-        echo "'${binary}' was not built with uutils, using the 'false' program"
-        cp "${UU_BUILD_DIR}/false" "${bin_path}"
+        ln -svf /usr/bin/false "${bin_path}"
     }
 done