From 5fd26c067190b44ebf59bdbc1254dad6160fcbdf Mon Sep 17 00:00:00 2001
From: oech3 <79379754+oech3@users.noreply.github.com>
Date: Wed, 26 Nov 2025 18:15:04 +0900
Subject: [PATCH] build-gnu.sh: Reduce time to build GNU coreutils (#9475)

---
 util/build-gnu.sh | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/util/build-gnu.sh b/util/build-gnu.sh
index 4a36f803e..91bbc114f 100755
--- a/util/build-gnu.sh
+++ b/util/build-gnu.sh
@@ -4,7 +4,7 @@
 
 # spell-checker:ignore (paths) abmon deref discrim eacces getlimits getopt ginstall inacc infloop inotify reflink ; (misc) INT_OFLOW OFLOW
 # spell-checker:ignore baddecode submodules xstrtol distros ; (vars/env) SRCDIR vdir rcexp xpart dired OSTYPE ; (utils) gnproc greadlink gsed multihardlink texinfo CARGOFLAGS
-# spell-checker:ignore openat TOCTOU
+# spell-checker:ignore openat TOCTOU CFLAGS
 
 set -e
 
@@ -131,7 +131,8 @@ else
     # Disable useless checks
     "${SED}" -i 's|check-texinfo: $(syntax_checks)|check-texinfo:|' doc/local.mk
     ./bootstrap --skip-po
-    ./configure --quiet --disable-gcc-warnings --disable-nls --disable-dependency-tracking --disable-bold-man-page-references \
+    # Use CFLAGS for best build time since we discard GNU coreutils
+    CFLAGS="${CFLAGS} -pipe -O0 -s" ./configure --quiet --disable-gcc-warnings --disable-nls --disable-dependency-tracking --disable-bold-man-page-references \
       "$([ "${SELINUX_ENABLED}" = 1 ] && echo --with-selinux || echo --without-selinux)"
     #Add timeout to to protect against hangs
     "${SED}" -i 's|^"\$@|'"${SYSTEM_TIMEOUT}"' 600 "\$@|' build-aux/test-driver