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kbuild: fix linux-headers package build when $(CC) cannot link userspace

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Since commit 5f73e7d038 ("kbuild: refactor cross-compiling
linux-headers package"), the linux-headers Debian package fails to
build when $(CC) cannot build userspace applications, for example,
when using toolchains installed by the 0day bot.

The host programs in the linux-headers package should be rebuilt using
the disto's cross-compiler, ${DEB_HOST_GNU_TYPE}-gcc instead of $(CC).
Hence, the variable 'CC' must be expanded in this shell script instead
of in the top-level Makefile.

Commit f354fc88a7 ("kbuild: install-extmod-build: add missing
quotation marks for CC variable") was not a correct fix because
CC="ccache gcc" should be unrelated when rebuilding userspace tools.

Fixes: 5f73e7d038 ("kbuild: refactor cross-compiling linux-headers package")
Reported-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
Closes: https://lore.kernel.org/linux-kbuild/CAK7LNARb3xO3ptBWOMpwKcyf3=zkfhMey5H2KnB1dOmUwM79dA@mail.gmail.com/T/#t
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Tested-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
This commit is contained in:
Masahiro Yamada 2025-02-13 15:26:44 +09:00
parent d1d0963121
commit 140332b6ed
1 changed files with 2 additions and 2 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

4
scripts/package/install-extmod-build
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@ -62,8 +62,8 @@ if [ "${CC}" != "${HOSTCC}" ]; then
# #
# Clear VPATH and srcroot because the source files reside in the output # Clear VPATH and srcroot because the source files reside in the output
# directory. # directory.
# shellcheck disable=SC2016 # $(MAKE), $(CC), and $(build) will be expanded by Make # shellcheck disable=SC2016 # $(MAKE) and $(build) will be expanded by Make
"${MAKE}" run-command KBUILD_RUN_COMMAND='+$(MAKE) HOSTCC="$(CC)" VPATH= srcroot=. $(build)='"${destdir}"/scripts "${MAKE}" run-command KBUILD_RUN_COMMAND='+$(MAKE) HOSTCC='"${CC}"' VPATH= srcroot=. $(build)='"${destdir}"/scripts
rm -f "${destdir}/scripts/Kbuild" rm -f "${destdir}/scripts/Kbuild"
fi fi