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| author | Maxim Kuvyrkov <maxim.kuvyrkov@linaro.org> | 2019-01-15 16:00:20 +0000 |
|---|---|---|
| committer | Maxim Kuvyrkov <maxim.kuvyrkov@linaro.org> | 2019-01-16 14:55:14 +0000 |
| commit | 267741394c0b7d904f0892f5a51c04d55833950d (patch) | |
| tree | f9f83959e50473928055330ef67d4976ae2bdc00 /tcwg_kernel-build.sh | |
| parent | cbebf4a738aec13c43a75b3f3c103754fa30cfbc (diff) | |
tcwg_kernel-build.sh: Stabilize kernel build for ccache
Kernel likes to include auto-generated stuff into main headers,
which completely breaks ccache optimizations.
KBUILD_BUILD_TIMESTAMP is the big one, it's different between
builds from the same sources.
SUBLEVEL and EXTRAVERSION change often enough to break large
bisections. Same for LOCALVERSION.
We save kernel.release in artifacts/ to have a record of release
strings.
Change-Id: I06ed87c554481b5202cde517ee4fbaa6c25e454b
Diffstat (limited to 'tcwg_kernel-build.sh')
| -rwxr-xr-x | tcwg_kernel-build.sh | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/tcwg_kernel-build.sh b/tcwg_kernel-build.sh index fdabf218..555e552c 100755 --- a/tcwg_kernel-build.sh +++ b/tcwg_kernel-build.sh @@ -143,10 +143,11 @@ build_linux () # Use binutils, etc from $bin export PATH="$bin:$PATH" - # Use ccache only when bisecting linux. Otherwise the compiler is - # new in every build and we would only clobber ccache volume. + # Use ccache only when bisecting linux (or preparing to). + # Otherwise the compiler is new in every build and we would + # only clobber ccache volume. local ccache="" - if [ x"${rr[mode]}" = x"bisect" -a x"${rr[current_project]}" = x"linux" ]; then + if [ x"${rr[mode]}" != x"jenkins-full" -a x"${rr[current_project]}" = x"linux" ]; then ccache="ccache" fi cat > $(pwd)/bin/${rr[target]}-cc <<EOF @@ -156,7 +157,7 @@ EOF chmod +x $(pwd)/bin/${rr[target]}-cc # Define make variables. - local opts="CC=$(pwd)/bin/${rr[target]}-cc" + local opts="CC=$(pwd)/bin/${rr[target]}-cc SUBLEVEL=0 EXTRAVERSION=-bisect" if [ x"${rr[target]}" != x"$(uname -m)" ]; then opts="$opts ARCH=$(print_kernel_target ${rr[target]})" opts="$opts CROSS_COMPILE=$(print_gnu_target ${rr[target]})-" @@ -168,11 +169,15 @@ EOF make $opts distclean make $opts ${rr[linux_config]} + sed -i -e 's:CONFIG_LOCALVERSION_AUTO=y:# CONFIG_LOCALVERSION_AUTO is not set:' .config + set +f; rm -f localversion*; set -f + make $opts oldconfig ccache -z - make $opts -j$(nproc --all) -s -k & + KBUILD_BUILD_TIMESTAMP=0 make $opts -j$(nproc --all) -s -k & local res=0 && wait $! || res=$? ccache -s + cp include/config/kernel.release $run_step_artifacts/ return $res ) } |