diff options
| author | Mathias Krause <minipli@grsecurity.net> | 2026-04-02 16:51:16 +0200 |
|---|---|---|
| committer | Nicolas Schier <nsc@kernel.org> | 2026-04-13 21:56:30 +0200 |
| commit | 2452dcf4d740effff5aa71b7f6529ee8c04fd8f6 (patch) | |
| tree | 1ddf60c741ab2a54672b31aa90b7304250c1cc5c /scripts | |
| parent | 028ef9c96e96197026887c0f092424679298aae8 (diff) | |
kbuild: builddeb - avoid recompiles for non-cross-compiles
Commit e2c318225ac1 ("kbuild: deb-pkg: add
pkg.linux-upstream.nokernelheaders build profile") changed how
install-extmod-build gets called, making it always rebuild the host
programs below scripts/ if HOSTCC wasn't specified with its full triplet
on the make command line. That is, apparently, needed to fix up commit
f1d87664b82a ("kbuild: cross-compile linux-headers package when
possible") for cross-compiles. However, in the much more common case of
non-cross-compile builds this will lead to unnecessary rebuilding of
host tools including gcc plugins. This, in turn, will lead to a full
kernel rebuild on the next 'make bindeb-pkg' which is unfortunate.
Avoid that by only triggering the rebuild of host tools for actual
cross-compile builds.
Signed-off-by: Mathias Krause <minipli@grsecurity.net>
Fixes: e2c318225ac1 ("kbuild: deb-pkg: add pkg.linux-upstream.nokernelheaders build profile")
Cc: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nicolas Schier <nsc@kernel.org>
Link: https://patch.msgid.link/20260402145116.1010901-1-minipli@grsecurity.net
Signed-off-by: Nicolas Schier <nsc@kernel.org>
Diffstat (limited to 'scripts')
| -rwxr-xr-x | scripts/package/builddeb | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/scripts/package/builddeb b/scripts/package/builddeb index 3627ca227e5a..ba1defc61652 100755 --- a/scripts/package/builddeb +++ b/scripts/package/builddeb @@ -139,7 +139,13 @@ install_kernel_headers () { pdir=debian/$1 version=${1#linux-headers-} - CC="${DEB_HOST_GNU_TYPE}-gcc" "${srctree}/scripts/package/install-extmod-build" "${pdir}/usr/src/linux-headers-${version}" + # Override $CC only for cross-compiles, to not unnecessarily rebuild + # scripts/ including plugins, which may lead to a full kernel rebuild. + if [ -n "${CROSS_COMPILE}" ]; then + CC="${DEB_HOST_GNU_TYPE}-gcc" "${srctree}/scripts/package/install-extmod-build" "${pdir}/usr/src/linux-headers-${version}" + else + "${srctree}/scripts/package/install-extmod-build" "${pdir}/usr/src/linux-headers-${version}" + fi mkdir -p $pdir/lib/modules/$version/ ln -s /usr/src/linux-headers-$version $pdir/lib/modules/$version/build |