scripts/package/install-extmod-build

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0-only
   3
   4 set -eu
   5
   6 destdir=${1}
   7
   8 is_enabled() {
   9         grep -q "^$1=y" include/config/auto.conf
  10 }
  11
  12 find_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
  18 mkdir -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, rebuild host programs using ${CC}.
  48 #
  49 # This caters to host programs that participate in Kbuild. objtool and
  50 # resolve_btfids are out of scope.
  51 if [ "${CC}" != "${HOSTCC}" ]; then
  52         echo "Rebuilding host programs with ${CC}..."
  53
  54         cat <<-'EOF' >  "${destdir}/Kbuild"
  55         subdir-y := scripts
  56         EOF
  57
  58         # HOSTCXX is not overridden. The C++ compiler is used to build:
  59         # - scripts/kconfig/qconf, which is unneeded for external module builds
  60         # - GCC plugins, which will not work on the installed system even after
  61         #   being rebuilt.
  62         #
  63         # Use the single-target build to avoid the modpost invocation, which
  64         # would overwrite Module.symvers.
  65         "${MAKE}" HOSTCC="${CC}" KBUILD_EXTMOD="${destdir}" scripts/
  66
  67         cat <<-'EOF' >  "${destdir}/scripts/Kbuild"
  68         subdir-y := basic
  69         hostprogs-always-y := mod/modpost
  70         mod/modpost-objs := $(addprefix mod/, modpost.o file2alias.o sumversion.o symsearch.o)
  71         EOF
  72
  73         # Run once again to rebuild scripts/basic/ and scripts/mod/modpost.
  74         "${MAKE}" HOSTCC="${CC}" KBUILD_EXTMOD="${destdir}" scripts/
  75
  76         rm -f "${destdir}/Kbuild" "${destdir}/scripts/Kbuild"
  77 fi
  78
  79 find "${destdir}" \( -name '.*.cmd' -o -name '*.o' \) -delete