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Since commit13b25489b6("kbuild: change working directory to external module directory with M="), the Debian package build fails if a relative path is specified with the O= option. $ make O=build bindeb-pkg [ snip ] dpkg-deb: building package 'linux-image-6.13.0-rc1' in '../linux-image-6.13.0-rc1_6.13.0-rc1-6_amd64.deb'. Rebuilding host programs with x86_64-linux-gnu-gcc... make[6]: Entering directory '/home/masahiro/linux/build' /home/masahiro/linux/Makefile:190: *** specified kernel directory "build" does not exist. Stop. This occurs because the sub_make_done flag is cleared, even though the working directory is already in the output directory. Passing KBUILD_OUTPUT=. resolves the issue. Fixes:13b25489b6("kbuild: change working directory to external module directory with M=") Reported-by: Charlie Jenkins <charlie@rivosinc.com> Closes: https://lore.kernel.org/all/Z1DnP-GJcfseyrM3@ghost/ Tested-by: Charlie Jenkins <charlie@rivosinc.com> Reviewed-by: Charlie Jenkins <charlie@rivosinc.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
86 lines
2.6 KiB
Bash
Executable file
86 lines
2.6 KiB
Bash
Executable file
#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0-only
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set -eu
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destdir=${1}
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is_enabled() {
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grep -q "^$1=y" include/config/auto.conf
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}
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find_in_scripts() {
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find scripts \
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\( -name atomic -o -name dtc -o -name kconfig -o -name package \) -prune -o \
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! -name unifdef -a ! -name mk_elfconfig -a \( -type f -o -type l \) -print
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}
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mkdir -p "${destdir}"
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(
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cd "${srctree}"
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echo Makefile
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find "arch/${SRCARCH}" -maxdepth 1 -name 'Makefile*'
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find "arch/${SRCARCH}" -name generated -prune -o -name include -type d -print
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find "arch/${SRCARCH}" -name Kbuild.platforms -o -name Platform
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find include \( -name config -o -name generated \) -prune -o \( -type f -o -type l \) -print
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find_in_scripts
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) | tar -c -f - -C "${srctree}" -T - | tar -xf - -C "${destdir}"
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{
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if is_enabled CONFIG_OBJTOOL; then
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echo tools/objtool/objtool
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fi
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echo Module.symvers
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echo "arch/${SRCARCH}/include/generated"
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echo include/config/auto.conf
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echo include/config/kernel.release
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echo include/generated
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find_in_scripts
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if is_enabled CONFIG_GCC_PLUGINS; then
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find scripts/gcc-plugins -name '*.so'
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fi
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} | tar -c -f - -T - | tar -xf - -C "${destdir}"
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# When ${CC} and ${HOSTCC} differ, rebuild host programs using ${CC}.
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#
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# This caters to host programs that participate in Kbuild. objtool and
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# resolve_btfids are out of scope.
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if [ "${CC}" != "${HOSTCC}" ]; then
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echo "Rebuilding host programs with ${CC}..."
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# This leverages external module building.
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# - Clear sub_make_done to allow the top-level Makefile to redo sub-make.
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# - Filter out --no-print-directory to print "Entering directory" logs
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# when Make changes the working directory.
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unset sub_make_done
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MAKEFLAGS=$(echo "${MAKEFLAGS}" | sed s/--no-print-directory//)
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cat <<-'EOF' > "${destdir}/Kbuild"
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subdir-y := scripts
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EOF
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# HOSTCXX is not overridden. The C++ compiler is used to build:
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# - scripts/kconfig/qconf, which is unneeded for external module builds
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# - GCC plugins, which will not work on the installed system even after
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# being rebuilt.
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#
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# Use the single-target build to avoid the modpost invocation, which
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# would overwrite Module.symvers.
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"${MAKE}" HOSTCC="${CC}" KBUILD_OUTPUT=. KBUILD_EXTMOD="${destdir}" scripts/
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cat <<-'EOF' > "${destdir}/scripts/Kbuild"
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subdir-y := basic
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hostprogs-always-y := mod/modpost
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mod/modpost-objs := $(addprefix mod/, modpost.o file2alias.o sumversion.o symsearch.o)
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EOF
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# Run once again to rebuild scripts/basic/ and scripts/mod/modpost.
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"${MAKE}" HOSTCC="${CC}" KBUILD_OUTPUT=. KBUILD_EXTMOD="${destdir}" scripts/
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rm -f "${destdir}/Kbuild" "${destdir}/scripts/Kbuild"
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fi
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find "${destdir}" \( -name '.*.cmd' -o -name '*.o' \) -delete
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