1SUMMARY = "Linux kernel Development Source" 2DESCRIPTION = "Development source linux kernel. When built, this recipe packages the \ 3source of the preferred virtual/kernel provider and makes it available for full kernel \ 4development or external module builds" 5 6SECTION = "kernel" 7 8LICENSE = "GPL-2.0-only" 9 10inherit linux-kernel-base 11 12# Whilst not a module, this ensures we don't get multilib extended (which would make no sense) 13inherit module-base 14 15# We need the kernel to be staged (unpacked, patched and configured) before 16# we can grab the source and make the source package. We also need the bits from 17# ${B} not to change while we install, so virtual/kernel must finish do_compile. 18do_install[depends] += "virtual/kernel:do_shared_workdir" 19# Need the source, not just the output of populate_sysroot 20do_install[depends] += "virtual/kernel:do_install" 21 22# There's nothing to do here, except install the source where we can package it 23do_fetch[noexec] = "1" 24do_unpack[noexec] = "1" 25do_patch[noexec] = "1" 26do_configure[noexec] = "1" 27do_compile[noexec] = "1" 28deltask do_populate_sysroot 29 30S = "${STAGING_KERNEL_DIR}" 31B = "${STAGING_KERNEL_BUILDDIR}" 32 33PACKAGE_ARCH = "${MACHINE_ARCH}" 34 35KERNEL_BUILD_ROOT="${nonarch_base_libdir}/modules/" 36 37do_install() { 38 kerneldir=${D}${KERNEL_BUILD_ROOT}${KERNEL_VERSION} 39 install -d $kerneldir 40 41 # create the directory structure 42 rm -f $kerneldir/build 43 rm -f $kerneldir/source 44 mkdir -p $kerneldir/build 45 46 # for compatibility with some older variants of this package, we 47 # create a /usr/src/kernel symlink to /lib/modules/<version>/source 48 mkdir -p ${D}/usr/src 49 ( 50 cd ${D}/usr/src 51 ln -rs ${D}${KERNEL_BUILD_ROOT}${KERNEL_VERSION}/source kernel 52 ) 53 54 # for on target purposes, we unify build and source 55 ( 56 cd $kerneldir 57 ln -s build source 58 ) 59 60 # first copy everything 61 ( 62 cd ${S} 63 cp --parents $(find -type f -name "Makefile*" -o -name "Kconfig*") $kerneldir/build 64 cp --parents $(find -type f -name "Build" -o -name "Build.include") $kerneldir/build 65 ) 66 67 # then drop all but the needed Makefiles/Kconfig files 68 rm -rf $kerneldir/build/scripts 69 rm -rf $kerneldir/build/include 70 71 # now copy in parts from the build that we'll need later 72 ( 73 cd ${B} 74 75 if [ -s Module.symvers ]; then 76 cp Module.symvers $kerneldir/build 77 fi 78 cp System.map* $kerneldir/build 79 if [ -s Module.markers ]; then 80 cp Module.markers $kerneldir/build 81 fi 82 83 cp -a .config $kerneldir/build 84 85 # This scripts copy blow up QA, so for now, we require a more 86 # complex 'make scripts' to restore these, versus copying them 87 # here. Left as a reference to indicate that we know the scripts must 88 # be dealt with. 89 # cp -a scripts $kerneldir/build 90 91 # although module.lds can be regenerated on target via 'make modules_prepare' 92 # there are several places where 'makes scripts prepare' is done, and that won't 93 # regenerate the file. So we copy it onto the target as a migration to using 94 # modules_prepare 95 cp -a --parents scripts/module.lds $kerneldir/build/ 2>/dev/null || : 96 97 if [ -d arch/${ARCH}/scripts ]; then 98 cp -a arch/${ARCH}/scripts $kerneldir/build/arch/${ARCH} 99 fi 100 if [ -f arch/${ARCH}/*lds ]; then 101 cp -a arch/${ARCH}/*lds $kerneldir/build/arch/${ARCH} 102 fi 103 104 rm -f $kerneldir/build/scripts/*.o 105 rm -f $kerneldir/build/scripts/*/*.o 106 107 if [ "${ARCH}" = "powerpc" ]; then 108 if [ -e arch/powerpc/lib/crtsavres.S ] || 109 [ -e arch/powerpc/lib/crtsavres.o ]; then 110 cp -a --parents arch/powerpc/lib/crtsavres.[So] $kerneldir/build/ 111 fi 112 fi 113 114 if [ "${ARCH}" = "arm64" -o "${ARCH}" = "riscv" ]; then 115 if [ -e arch/${ARCH}/kernel/vdso/vdso.lds ]; then 116 cp -a --parents arch/${ARCH}/kernel/vdso/vdso.lds $kerneldir/build/ 117 fi 118 fi 119 if [ "${ARCH}" = "powerpc" ]; then 120 cp -a --parents arch/powerpc/kernel/vdso32/vdso32.lds $kerneldir/build 2>/dev/null || : 121 cp -a --parents arch/powerpc/kernel/vdso64/vdso64.lds $kerneldir/build 2>/dev/null || : 122 fi 123 124 cp -a include $kerneldir/build/include 125 126 # we don't usually copy generated files, since they can be rebuilt on the target, 127 # but without this file, we get a forced syncconfig run in v5.8+, which prompts and 128 # breaks workflows. 129 cp -a --parents include/generated/autoconf.h $kerneldir/build 2>/dev/null || : 130 131 if [ -e $kerneldir/include/generated/.vdso-offsets.h.cmd ] || 132 [ -e $kerneldir/build/include/generated/.vdso-offsets.h.cmd ] || 133 [ -e $kerneldir/build/include/generated/.vdso32-offsets.h.cmd ] ; then 134 rm -f $kerneldir/include/generated/.vdso-offsets.h.cmd 135 rm -f $kerneldir/build/include/generated/.vdso-offsets.h.cmd 136 rm -f $kerneldir/build/include/generated/.vdso32-offsets.h.cmd 137 fi 138 ) 139 140 # now grab the chunks from the source tree that we need 141 ( 142 cd ${S} 143 144 cp -a scripts $kerneldir/build 145 146 # if our build dir had objtool, it will also be rebuilt on target, so 147 # we copy what is required for that build 148 if [ -f ${B}/tools/objtool/objtool ]; then 149 # these are a few files associated with objtool, since we'll need to 150 # rebuild it 151 cp -a --parents tools/build/Build.include $kerneldir/build/ 152 cp -a --parents tools/build/Build $kerneldir/build/ 153 cp -a --parents tools/build/fixdep.c $kerneldir/build/ 154 cp -a --parents tools/scripts/utilities.mak $kerneldir/build/ 155 156 # extra files, just in case 157 cp -a --parents tools/objtool/* $kerneldir/build/ 158 cp -a --parents tools/lib/* $kerneldir/build/ 159 cp -a --parents tools/lib/subcmd/* $kerneldir/build/ 160 161 cp -a --parents tools/include/* $kerneldir/build/ 162 163 cp -a --parents $(find tools/arch/${ARCH}/ -type f) $kerneldir/build/ 164 fi 165 166 if [ "${ARCH}" = "arm64" ]; then 167 # arch/arm64/include/asm/xen references arch/arm 168 cp -a --parents arch/arm/include/asm/xen $kerneldir/build/ 169 # arch/arm64/include/asm/opcodes.h references arch/arm 170 cp -a --parents arch/arm/include/asm/opcodes.h $kerneldir/build/ 171 172 cp -a --parents arch/arm64/kernel/vdso/*gettimeofday.* $kerneldir/build/ 173 cp -a --parents arch/arm64/kernel/vdso/sigreturn.S $kerneldir/build/ 174 cp -a --parents arch/arm64/kernel/vdso/note.S $kerneldir/build/ 175 cp -a --parents arch/arm64/kernel/vdso/gen_vdso_offsets.sh $kerneldir/build/ 176 177 cp -a --parents arch/arm64/kernel/module.lds $kerneldir/build/ 2>/dev/null || : 178 179 # 5.13+ needs these tools 180 cp -a --parents arch/arm64/tools/gen-cpucaps.awk $kerneldir/build/ 2>/dev/null || : 181 cp -a --parents arch/arm64/tools/cpucaps $kerneldir/build/ 2>/dev/null || : 182 183 if [ -e $kerneldir/build/arch/arm64/tools/gen-cpucaps.awk ]; then 184 sed -i -e "s,#!.*awk.*,#!${USRBINPATH}/env awk," $kerneldir/build/arch/arm64/tools/gen-cpucaps.awk 185 fi 186 fi 187 188 if [ "${ARCH}" = "powerpc" ]; then 189 # 5.0 needs these files, but don't error if they aren't present in the source 190 cp -a --parents arch/${ARCH}/kernel/syscalls/syscall.tbl $kerneldir/build/ 2>/dev/null || : 191 cp -a --parents arch/${ARCH}/kernel/syscalls/syscalltbl.sh $kerneldir/build/ 2>/dev/null || : 192 cp -a --parents arch/${ARCH}/kernel/syscalls/syscallhdr.sh $kerneldir/build/ 2>/dev/null || : 193 cp -a --parents arch/${ARCH}/kernel/vdso32/* $kerneldir/build/ 2>/dev/null || : 194 cp -a --parents arch/${ARCH}/kernel/vdso64/* $kerneldir/build/ 2>/dev/null || : 195 fi 196 if [ "${ARCH}" = "riscv" ]; then 197 cp -a --parents arch/riscv/kernel/vdso/*gettimeofday.* $kerneldir/build/ 198 cp -a --parents arch/riscv/kernel/vdso/note.S $kerneldir/build/ 199 if [ -e arch/riscv/kernel/vdso/gen_vdso_offsets.sh ]; then 200 cp -a --parents arch/riscv/kernel/vdso/gen_vdso_offsets.sh $kerneldir/build/ 201 fi 202 cp -a --parents arch/riscv/kernel/vdso/* $kerneldir/build/ 2>/dev/null || : 203 fi 204 205 # include the machine specific headers for ARM variants, if available. 206 if [ "${ARCH}" = "arm" ]; then 207 cp -a --parents arch/${ARCH}/mach-*/include $kerneldir/build/ 208 209 # include a few files for 'make prepare' 210 cp -a --parents arch/arm/tools/gen-mach-types $kerneldir/build/ 211 cp -a --parents arch/arm/tools/mach-types $kerneldir/build/ 212 213 # ARM syscall table tools only exist for kernels v4.10 or later 214 SYSCALL_TOOLS=$(find arch/arm/tools -name "syscall*") 215 if [ -n "$SYSCALL_TOOLS" ] ; then 216 cp -a --parents $SYSCALL_TOOLS $kerneldir/build/ 217 fi 218 219 cp -a --parents arch/arm/kernel/module.lds $kerneldir/build/ 2>/dev/null || : 220 fi 221 222 if [ -d arch/${ARCH}/include ]; then 223 cp -a --parents arch/${ARCH}/include $kerneldir/build/ 224 fi 225 226 cp -a include $kerneldir/build 227 228 cp -a --parents lib/vdso/* $kerneldir/build/ 2>/dev/null || : 229 230 cp -a --parents tools/include/tools/le_byteshift.h $kerneldir/build/ 231 cp -a --parents tools/include/tools/be_byteshift.h $kerneldir/build/ 232 233 # required for generate missing syscalls prepare phase 234 cp -a --parents $(find arch/x86 -type f -name "syscall_32.tbl") $kerneldir/build 235 cp -a --parents $(find arch/arm -type f -name "*.tbl") $kerneldir/build 2>/dev/null || : 236 237 if [ "${ARCH}" = "x86" ]; then 238 # files for 'make prepare' to succeed with kernel-devel 239 cp -a --parents $(find arch/x86 -type f -name "syscall_32.tbl") $kerneldir/build/ 2>/dev/null || : 240 cp -a --parents $(find arch/x86 -type f -name "syscalltbl.sh") $kerneldir/build/ 2>/dev/null || : 241 cp -a --parents $(find arch/x86 -type f -name "syscallhdr.sh") $kerneldir/build/ 2>/dev/null || : 242 cp -a --parents $(find arch/x86 -type f -name "syscall_64.tbl") $kerneldir/build/ 2>/dev/null || : 243 cp -a --parents arch/x86/tools/relocs_32.c $kerneldir/build/ 244 cp -a --parents arch/x86/tools/relocs_64.c $kerneldir/build/ 245 cp -a --parents arch/x86/tools/relocs.c $kerneldir/build/ 246 cp -a --parents arch/x86/tools/relocs_common.c $kerneldir/build/ 247 cp -a --parents arch/x86/tools/relocs.h $kerneldir/build/ 248 cp -a --parents arch/x86/tools/gen-insn-attr-x86.awk $kerneldir/build/ 2>/dev/null || : 249 cp -a --parents arch/x86/purgatory/purgatory.c $kerneldir/build/ 250 251 # 4.18 + have unified the purgatory files, so we ignore any errors if 252 # these files are not present 253 cp -a --parents arch/x86/purgatory/sha256.h $kerneldir/build/ 2>/dev/null || : 254 cp -a --parents arch/x86/purgatory/sha256.c $kerneldir/build/ 2>/dev/null || : 255 256 cp -a --parents arch/x86/purgatory/stack.S $kerneldir/build/ 257 cp -a --parents arch/x86/purgatory/string.c $kerneldir/build/ 2>/dev/null || : 258 cp -a --parents arch/x86/purgatory/setup-x86_64.S $kerneldir/build/ 259 cp -a --parents arch/x86/purgatory/entry64.S $kerneldir/build/ 260 cp -a --parents arch/x86/boot/string.h $kerneldir/build/ 261 cp -a --parents arch/x86/boot/string.c $kerneldir/build/ 262 cp -a --parents arch/x86/boot/compressed/string.c $kerneldir/build/ 2>/dev/null || : 263 cp -a --parents arch/x86/boot/ctype.h $kerneldir/build/ 264 265 # objtool requires these files 266 cp -a --parents arch/x86/lib/inat.c $kerneldir/build/ 2>/dev/null || : 267 cp -a --parents arch/x86/lib/insn.c $kerneldir/build/ 2>/dev/null || : 268 fi 269 270 if [ "${ARCH}" = "mips" ]; then 271 cp -a --parents arch/mips/Kbuild.platforms $kerneldir/build/ 272 cp --parents $(find -type f -name "Platform") $kerneldir/build 273 cp --parents arch/mips/boot/tools/relocs* $kerneldir/build 274 cp -a --parents arch/mips/kernel/asm-offsets.c $kerneldir/build 275 cp -a --parents kernel/time/timeconst.bc $kerneldir/build 276 cp -a --parents kernel/bounds.c $kerneldir/build 277 cp -a --parents Kbuild $kerneldir/build 278 cp -a --parents arch/mips/kernel/syscalls/*.sh $kerneldir/build 2>/dev/null || : 279 cp -a --parents arch/mips/kernel/syscalls/*.tbl $kerneldir/build 2>/dev/null || : 280 cp -a --parents arch/mips/tools/elf-entry.c $kerneldir/build 2>/dev/null || : 281 fi 282 283 # required to build scripts/selinux/genheaders/genheaders 284 cp -a --parents security/selinux/include/* $kerneldir/build/ 285 286 # copy any localversion files 287 cp -a localversion* $kerneldir/build/ 2>/dev/null || : 288 ) 289 290 # Make sure the Makefile and version.h have a matching timestamp so that 291 # external modules can be built 292 touch -r $kerneldir/build/Makefile $kerneldir/build/include/generated/uapi/linux/version.h 293 294 # Copy .config to include/config/auto.conf so "make prepare" is unnecessary. 295 cp $kerneldir/build/.config $kerneldir/build/include/config/auto.conf 296 297 # make sure these are at least as old as the .config, or rebuilds will trigger 298 touch -r $kerneldir/build/.config $kerneldir/build/include/generated/autoconf.h 2>/dev/null || : 299 touch -r $kerneldir/build/.config $kerneldir/build/include/config/auto.conf* 2>/dev/null || : 300 301 if [ -e "$kerneldir/build/include/config/auto.conf.cmd" ]; then 302 sed -i 's/ifneq "$(CC)" ".*-linux-.*gcc.*$/ifneq "$(CC)" "gcc"/' "$kerneldir/build/include/config/auto.conf.cmd" 303 sed -i 's/ifneq "$(LD)" ".*-linux-.*ld.bfd.*$/ifneq "$(LD)" "ld"/' "$kerneldir/build/include/config/auto.conf.cmd" 304 sed -i 's/ifneq "$(AR)" ".*-linux-.*ar.*$/ifneq "$(AR)" "ar"/' "$kerneldir/build/include/config/auto.conf.cmd" 305 sed -i 's/ifneq "$(OBJCOPY)" ".*-linux-.*objcopy.*$/ifneq "$(OBJCOPY)" "objcopy"/' "$kerneldir/build/include/config/auto.conf.cmd" 306 if [ "${ARCH}" = "powerpc" ]; then 307 sed -i 's/ifneq "$(NM)" ".*-linux-.*nm.*$/ifneq "$(NM)" "nm --synthetic"/' "$kerneldir/build/include/config/auto.conf.cmd" 308 else 309 sed -i 's/ifneq "$(NM)" ".*-linux-.*nm.*$/ifneq "$(NM)" "nm"/' "$kerneldir/build/include/config/auto.conf.cmd" 310 fi 311 sed -i 's/ifneq "$(HOSTCXX)" ".*$/ifneq "$(HOSTCXX)" "g++"/' "$kerneldir/build/include/config/auto.conf.cmd" 312 sed -i 's/ifneq "$(HOSTCC)" ".*$/ifneq "$(HOSTCC)" "gcc"/' "$kerneldir/build/include/config/auto.conf.cmd" 313 sed -i 's/ifneq "$(CC_VERSION_TEXT)".*\(gcc.*\)"/ifneq "$(CC_VERSION_TEXT)" "\1"/' "$kerneldir/build/include/config/auto.conf.cmd" 314 sed -i 's/ifneq "$(srctree)" ".*"/ifneq "$(srctree)" "."/' "$kerneldir/build/include/config/auto.conf.cmd" 315 # we don't build against the defconfig, so make sure it isn't the trigger for syncconfig 316 sed -i 's/ifneq "$(KBUILD_DEFCONFIG)".*"\(.*\)"/ifneq "\1" "\1"/' "$kerneldir/build/include/config/auto.conf.cmd" 317 fi 318 319 # make the scripts python3 safe. We won't be running these, and if they are 320 # left as /usr/bin/python rootfs assembly will fail, since we only have python3 321 # in the RDEPENDS (and the python3 package does not include /usr/bin/python) 322 for ss in $(find $kerneldir/build/scripts -type f -name '*'); do 323 sed -i 's,/usr/bin/python2,/usr/bin/env python3,' "$ss" 324 sed -i 's,/usr/bin/env python2,/usr/bin/env python3,' "$ss" 325 sed -i 's,/usr/bin/python,/usr/bin/env python3,' "$ss" 326 done 327 328 chown -R root:root ${D} 329} 330 331# Ensure we don't race against "make scripts" during cpio 332do_install[lockfiles] = "${TMPDIR}/kernel-scripts.lock" 333 334FILES:${PN} = "${KERNEL_BUILD_ROOT} ${KERNEL_SRC_PATH}" 335FILES:${PN}-dbg += "${KERNEL_BUILD_ROOT}*/build/scripts/*/.debug/*" 336 337RDEPENDS:${PN} = "bc python3 flex bison ${TCLIBC}-utils" 338# 4.15+ needs these next two RDEPENDS 339RDEPENDS:${PN} += "openssl-dev util-linux" 340# and x86 needs a bit more for 4.15+ 341RDEPENDS:${PN} += "${@bb.utils.contains('ARCH', 'x86', 'elfutils-dev', '', d)}" 342# 5.8+ needs gcc-plugins libmpc-dev 343RDEPENDS:${PN} += "gcc-plugins libmpc-dev" 344# 5.13+ needs awk for arm64 345RDEPENDS:${PN}:append:aarch64 = " gawk" 346# 5.13+ needs grep for powerpc 347RDEPENDS:${PN}:append:powerpc = " grep" 348