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| author |   Michał Górny <mgorny@gentoo.org> | 2025-07-29 15:24:55 +0200 |
|---|---|---|
| committer |   Masahiro Yamada <masahiroy@kernel.org> | 2025-08-06 10:23:36 +0900 |
| commit | 73d210e9faf85c36d5c9d2e38cb42c2d9837ee51 (patch) | |
| tree | 9b31afba5e2aaa45faba3c105adaf534b395a275 | |
| parent | kbuild: userprogs: use correct linker when mixing clang and GNU ld (diff) | |
| download | wireguard-linux-73d210e9faf85c36d5c9d2e38cb42c2d9837ee51.tar.xz wireguard-linux-73d210e9faf85c36d5c9d2e38cb42c2d9837ee51.zip | |
kheaders: make it possible to override TAR
Commit 86cdd2fdc4e3 ("kheaders: make headers archive reproducible")
introduced a number of options specific to GNU tar to the `tar`
invocation in `gen_kheaders.sh` script. This causes the script to fail
to work on systems where `tar` is not GNU tar. This can occur e.g.
on recent Gentoo Linux installations that support using bsdtar from
libarchive instead.
Add a `TAR` make variable to make it possible to override the tar
executable used, e.g. by specifying:
make TAR=gtar
Link: https://bugs.gentoo.org/884061
Reported-by: Sam James <sam@gentoo.org>
Tested-by: Sam James <sam@gentoo.org>
Co-developed-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Michał Górny <mgorny@gentoo.org>
Signed-off-by: Sam James <sam@gentoo.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
| -rw-r--r-- | Makefile | 3 | ||||
| -rwxr-xr-x | kernel/gen_kheaders.sh | 6 |
2 files changed, 5 insertions, 4 deletions
@@ -543,6 +543,7 @@ LZMA = lzma LZ4 = lz4 XZ = xz ZSTD = zstd +TAR = tar CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ -Wbitwise -Wno-return-void -Wno-unknown-attribute $(CF) @@ -622,7 +623,7 @@ export RUSTC RUSTDOC RUSTFMT RUSTC_OR_CLIPPY_QUIET RUSTC_OR_CLIPPY BINDGEN export HOSTRUSTC KBUILD_HOSTRUSTFLAGS export CPP AR NM STRIP OBJCOPY OBJDUMP READELF PAHOLE RESOLVE_BTFIDS LEX YACC AWK INSTALLKERNEL export PERL PYTHON3 CHECK CHECKFLAGS MAKE UTS_MACHINE HOSTCXX -export KGZIP KBZIP2 KLZOP LZMA LZ4 XZ ZSTD +export KGZIP KBZIP2 KLZOP LZMA LZ4 XZ ZSTD TAR export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS KBUILD_PROCMACROLDFLAGS LDFLAGS_MODULE export KBUILD_USERCFLAGS KBUILD_USERLDFLAGS diff --git a/kernel/gen_kheaders.sh b/kernel/gen_kheaders.sh index c64e5a00a3d9..896a503dfb29 100755 --- a/kernel/gen_kheaders.sh +++ b/kernel/gen_kheaders.sh @@ -30,8 +30,8 @@ rm -rf "${tmpdir}" mkdir "${tmpdir}" # shellcheck disable=SC2154 # srctree is passed as an env variable -sed "s:^${srctree}/::" "${srclist}" | tar -c -f - -C "${srctree}" -T - | tar -xf - -C "${tmpdir}" -tar -c -f - -T "${objlist}" | tar -xf - -C "${tmpdir}" +sed "s:^${srctree}/::" "${srclist}" | ${TAR} -c -f - -C "${srctree}" -T - | ${TAR} -xf - -C "${tmpdir}" +${TAR} -c -f - -T "${objlist}" | ${TAR} -xf - -C "${tmpdir}" # Remove comments except SDPX lines # Use a temporary file to store directory contents to prevent find/xargs from @@ -43,7 +43,7 @@ xargs -0 -P8 -n1 \ rm -f "${tmpdir}.contents.txt" # Create archive and try to normalize metadata for reproducibility. -tar "${timestamp:+--mtime=$timestamp}" \ +${TAR} "${timestamp:+--mtime=$timestamp}" \ --owner=0 --group=0 --sort=name --numeric-owner --mode=u=rw,go=r,a+X \ -I "${XZ}" -cf "${tarfile}" -C "${tmpdir}/" . > /dev/null |