Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#!/bin/sh
2# SPDX-License-Identifier: GPL-2.0-only
3
4set -eu
5
6destdir=${1}
7
8is_enabled() {
9 grep -q "^$1=y" include/config/auto.conf
10}
11
12find_in_scripts() {
13 find scripts \
14 \( -name atomic -o -name dtc -o -name kconfig -o -name package \) -prune -o \
15 ! -name unifdef -a ! -name mk_elfconfig -a \( -type f -o -type l \) -print
16}
17
18mkdir -p "${destdir}"
19
20(
21 cd "${srctree}"
22 echo Makefile
23 find "arch/${SRCARCH}" -maxdepth 1 -name 'Makefile*'
24 find "arch/${SRCARCH}" -name generated -prune -o -name include -type d -print
25 find "arch/${SRCARCH}" -name Kbuild.platforms -o -name Platform
26 find include \( -name config -o -name generated \) -prune -o \( -type f -o -type l \) -print
27 find_in_scripts
28) | tar -c -f - -C "${srctree}" -T - | tar -xf - -C "${destdir}"
29
30{
31 if is_enabled CONFIG_OBJTOOL; then
32 echo tools/objtool/objtool
33 fi
34
35 echo Module.symvers
36 echo "arch/${SRCARCH}/include/generated"
37 echo include/config/auto.conf
38 echo include/config/kernel.release
39 echo include/generated
40 find_in_scripts
41
42 if is_enabled CONFIG_GCC_PLUGINS; then
43 find scripts/gcc-plugins -name '*.so'
44 fi
45} | tar -c -f - -T - | tar -xf - -C "${destdir}"
46
47# When ${CC} and ${HOSTCC} differ, we are likely cross-compiling. Rebuild host
48# programs using ${CC}. This assumes CC=${CROSS_COMPILE}gcc, which is usually
49# the case for package building. It does not cross-compile when CC=clang.
50#
51# This caters to host programs that participate in Kbuild. objtool and
52# resolve_btfids are out of scope.
53if [ "${CC}" != "${HOSTCC}" ] && is_enabled CONFIG_CC_CAN_LINK; then
54 echo "Rebuilding host programs with ${CC}..."
55
56 cat <<-'EOF' > "${destdir}/Kbuild"
57 subdir-y := scripts
58 EOF
59
60 # HOSTCXX is not overridden. The C++ compiler is used to build:
61 # - scripts/kconfig/qconf, which is unneeded for external module builds
62 # - GCC plugins, which will not work on the installed system even after
63 # being rebuilt.
64 #
65 # Use the single-target build to avoid the modpost invocation, which
66 # would overwrite Module.symvers.
67 "${MAKE}" HOSTCC="${CC}" KBUILD_EXTMOD="${destdir}" scripts/
68
69 cat <<-'EOF' > "${destdir}/scripts/Kbuild"
70 subdir-y := basic
71 hostprogs-always-y := mod/modpost
72 mod/modpost-objs := $(addprefix mod/, modpost.o file2alias.o sumversion.o symsearch.o)
73 EOF
74
75 # Run once again to rebuild scripts/basic/ and scripts/mod/modpost.
76 "${MAKE}" HOSTCC="${CC}" KBUILD_EXTMOD="${destdir}" scripts/
77
78 rm -f "${destdir}/Kbuild" "${destdir}/scripts/Kbuild"
79fi
80
81find "${destdir}" \( -name '.*.cmd' -o -name '*.o' \) -delete