Merge pull request #3462 from uutils/gnu-skip

GNU testsuite: no need to rerun the GNU build

util/build-gnu.sh

@@ -62,6 +62,12 @@ for binary in $(./build-aux/gen-lists-of-programs.sh --list-progs); do
     }
 done
 
+if test -f gnu-built; then
+    echo "GNU build already found. Skip"
+    echo "'rm -f $(pwd)/gnu-built' to force the build"
+    echo "Note: the customization of the tests will still happen"
+    exit 0
+else
     ./bootstrap
     ./configure --quiet --disable-gcc-warnings
     #Add timeout to to protect against hangs
@@ -70,6 +76,9 @@ sed -i 's|^"\$@|/usr/bin/timeout 600 "\$@|' build-aux/test-driver
     sed -i "s/^[[:blank:]]*PATH=.*/  PATH='${UU_BUILD_DIR//\//\\/}\$(PATH_SEPARATOR)'\"\$\$PATH\" \\\/" Makefile
     sed -i 's| tr | /usr/bin/tr |' tests/init.sh
     make -j "$(nproc)"
+    touch gnu-built
+fi
+
 # Handle generated factor tests
 t_first=00
 t_max=36