GnuTests: Cache config.cache and getlimits for faster setup

Author: oech3

.github/workflows/GnuTests.yml

@@ -2,7 +2,7 @@ name: GnuTests
 
 # spell-checker:ignore (abbrev/names) CodeCov gnulib GnuTests Swatinem
 # spell-checker:ignore (jargon) submodules devel
-# spell-checker:ignore (libs/utils) autopoint chksum getenforce gperf lcov libexpect limactl pyinotify setenforce shopt texinfo valgrind libattr libcap taiki-e
+# spell-checker:ignore (libs/utils) autopoint chksum getenforce getlimits gperf lcov libexpect limactl pyinotify setenforce shopt texinfo valgrind libattr libcap taiki-e
 # spell-checker:ignore (options) Ccodegen Coverflow Cpanic Zpanic
 # spell-checker:ignore (people) Dawid Dziurla * dawidd dtolnay
 # spell-checker:ignore (vars) FILESET SUBDIRS XPASS
@@ -74,6 +74,17 @@ jobs:
         git config submodule.gnulib.url https://github.com/coreutils/gnulib.git
         git submodule update --init --recursive --depth 1
       working-directory: gnu
+    - name: Restore config.cache
+      uses: actions/cache@v4
+      id: cache-config-gnu
+      with:
+        path: |
+          gnu/config.cache
+          gnu/src/getlimits
+        key: ${{ runner.os }}-gnu-config-${{ env.REPO_GNU_REF }}-${{ hashFiles('gnu/configure') }}
+        restore-keys: |
+          ${{ runner.os }}-gnu-config-${{ env.REPO_GNU_REF }}-
+          ${{ runner.os }}-gnu-config-
 
     #### Build environment setup
     - name: Install dependencies
@@ -115,6 +126,15 @@ jobs:
         ## Build binaries
         cd 'uutils'
         env PROFILE=release-small bash util/build-gnu.sh
+        
+    - name: Save config.cache
+      uses: actions/cache/save@v4
+      if: always() && steps.cache-config-gnu.outputs.cache-hit != 'true'
+      with:
+        path: |
+          gnu/config.cache
+          gnu/src/getlimits
+        key: ${{ runner.os }}-gnu-config-${{ env.REPO_GNU_REF }}-${{ hashFiles('gnu/configure') }}
 
     ### Run tests as user
     - name: Run GNU tests

util/build-gnu.sh

@@ -134,14 +134,16 @@ else
     "${SED}" -i '/^wget.*/d' bootstrap.conf # wget is used to DL po. Remove the dep.
     ./bootstrap --skip-po
     # Use CFLAGS for best build time since we discard GNU coreutils
-    CFLAGS="${CFLAGS} -pipe -O0 -s" ./configure --quiet --disable-gcc-warnings --disable-nls --disable-dependency-tracking --disable-bold-man-page-references \
+    CFLAGS="${CFLAGS} -pipe -O0 -s" ./configure -C --quiet --disable-gcc-warnings --disable-nls --disable-dependency-tracking --disable-bold-man-page-references \
       --enable-single-binary=symlinks \
       "$([ "${SELINUX_ENABLED}" = 1 ] && echo --with-selinux || echo --without-selinux)"
     #Add timeout to to protect against hangs
     "${SED}" -i 's|^"\$@|'"${SYSTEM_TIMEOUT}"' 600 "\$@|' build-aux/test-driver
     # Use a better diff
     "${SED}" -i 's|diff -c|diff -u|g' tests/Coreutils.pm
-    "${MAKE}" -j "$("${NPROC}")"
+    # Allow to omit make by reusing getlimits
+    test -f src/getlimits || "${MAKE}" -j "$("${NPROC}")"
+    cp -f src/getlimits "${UU_BUILD_DIR}"
 
     # Handle generated factor tests
     t_first=00
@@ -223,8 +225,6 @@ sed -i -e "s|---dis ||g" tests/tail/overlay-headers.sh
 # Do not FAIL, just do a regular ERROR
 "${SED}" -i -e "s|framework_failure_ 'no inotify_add_watch';|fail=1;|" tests/tail/inotify-rotate-resources.sh
 
-test -f "${UU_BUILD_DIR}/getlimits" || cp src/getlimits "${UU_BUILD_DIR}"
-
 # pr produces very long log and this command isn't super interesting
 # SKIP for now
 "${SED}" -i -e "s|my \$prog = 'pr';$|my \$prog = 'pr';CuSkip::skip \"\$prog: SKIP for producing too long logs\";|" tests/pr/pr-tests.pl