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https://git.yoctoproject.org/poky
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60d3f65d1c
The kernel build is now more sensitive to changing build inputs, like the compiler, linker, source tree location, versions, file timestamps, etc. When a difference is detected, the kernel build invokes a syncconfig to update/regenerate files as required. That process may prompt, and hence breaks automated tested and other workflows. By default, we don't want this to happen so we make sure that auto* timestamps are newer or equal to the .config timestap, we ensure that autoconf.h is in the filesystem and that we've substituted the cross tools used to build the kernel with the names that will be on the target. (From OE-Core rev: 532ae127c52c9f7b1d2e4ca5cbca91881d23a2ac) Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
291 lines
12 KiB
BlitzBasic
291 lines
12 KiB
BlitzBasic
SUMMARY = "Linux kernel Development Source"
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DESCRIPTION = "Development source linux kernel. When built, this recipe packages the \
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source of the preferred virtual/kernel provider and makes it available for full kernel \
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development or external module builds"
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SECTION = "kernel"
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LICENSE = "GPLv2"
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inherit linux-kernel-base
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# Whilst not a module, this ensures we don't get multilib extended (which would make no sense)
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inherit module-base
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# We need the kernel to be staged (unpacked, patched and configured) before
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# we can grab the source and make the source package. We also need the bits from
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# ${B} not to change while we install, so virtual/kernel must finish do_compile.
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do_install[depends] += "virtual/kernel:do_shared_workdir"
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# Need the source, not just the output of populate_sysroot
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do_install[depends] += "virtual/kernel:do_install"
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# There's nothing to do here, except install the source where we can package it
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do_fetch[noexec] = "1"
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do_unpack[noexec] = "1"
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do_patch[noexec] = "1"
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do_configure[noexec] = "1"
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do_compile[noexec] = "1"
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deltask do_populate_sysroot
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S = "${STAGING_KERNEL_DIR}"
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B = "${STAGING_KERNEL_BUILDDIR}"
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PACKAGE_ARCH = "${MACHINE_ARCH}"
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KERNEL_BUILD_ROOT="${nonarch_base_libdir}/modules/"
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do_install() {
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kerneldir=${D}${KERNEL_BUILD_ROOT}${KERNEL_VERSION}
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install -d $kerneldir
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# create the directory structure
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rm -f $kerneldir/build
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rm -f $kerneldir/source
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mkdir -p $kerneldir/build
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# for compatibility with some older variants of this package, we
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# create a /usr/src/kernel symlink to /lib/modules/<version>/source
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mkdir -p ${D}/usr/src
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(
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cd ${D}/usr/src
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lnr ${D}${KERNEL_BUILD_ROOT}${KERNEL_VERSION}/source kernel
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)
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# for on target purposes, we unify build and source
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(
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cd $kerneldir
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ln -s build source
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)
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# first copy everything
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(
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cd ${S}
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cp --parents $(find -type f -name "Makefile*" -o -name "Kconfig*") $kerneldir/build
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cp --parents $(find -type f -name "Build" -o -name "Build.include") $kerneldir/build
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)
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# then drop all but the needed Makefiles/Kconfig files
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rm -rf $kerneldir/build/scripts
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rm -rf $kerneldir/build/include
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# now copy in parts from the build that we'll need later
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(
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cd ${B}
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cp Module.symvers $kerneldir/build
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cp System.map* $kerneldir/build
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if [ -s Module.markers ]; then
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cp Module.markers $kerneldir/build
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fi
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cp -a .config $kerneldir/build
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# This scripts copy blow up QA, so for now, we require a more
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# complex 'make scripts' to restore these, versus copying them
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# here. Left as a reference to indicate that we know the scripts must
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# be dealt with.
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# cp -a scripts $kerneldir/build
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if [ -d arch/${ARCH}/scripts ]; then
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cp -a arch/${ARCH}/scripts $kerneldir/build/arch/${ARCH}
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fi
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if [ -f arch/${ARCH}/*lds ]; then
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cp -a arch/${ARCH}/*lds $kerneldir/build/arch/${ARCH}
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fi
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rm -f $kerneldir/build/scripts/*.o
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rm -f $kerneldir/build/scripts/*/*.o
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if [ "${ARCH}" = "powerpc" ]; then
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if [ -e arch/powerpc/lib/crtsavres.S ] ||
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[ -e arch/powerpc/lib/crtsavres.o ]; then
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cp -a --parents arch/powerpc/lib/crtsavres.[So] $kerneldir/build/
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fi
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fi
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if [ "${ARCH}" = "arm64" ]; then
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cp -a --parents arch/arm64/kernel/vdso/vdso.lds $kerneldir/build/
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fi
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cp -a include $kerneldir/build/include
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# we don't usually copy generated files, since they can be rebuilt on the target,
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# but without this file, we get a forced syncconfig run in v5.8+, which prompts and
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# breaks workflows.
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cp -a --parents include/generated/autoconf.h $kerneldir/build 2>/dev/null || :
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)
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# now grab the chunks from the source tree that we need
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(
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cd ${S}
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cp -a scripts $kerneldir/build
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# if our build dir had objtool, it will also be rebuilt on target, so
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# we copy what is required for that build
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if [ -f ${B}/tools/objtool/objtool ]; then
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# these are a few files associated with objtool, since we'll need to
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# rebuild it
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cp -a --parents tools/build/Build.include $kerneldir/build/
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cp -a --parents tools/build/Build $kerneldir/build/
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cp -a --parents tools/build/fixdep.c $kerneldir/build/
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cp -a --parents tools/scripts/utilities.mak $kerneldir/build/
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# extra files, just in case
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cp -a --parents tools/objtool/* $kerneldir/build/
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cp -a --parents tools/lib/* $kerneldir/build/
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cp -a --parents tools/lib/subcmd/* $kerneldir/build/
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cp -a --parents tools/include/* $kerneldir/build/
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cp -a --parents $(find tools/arch/${ARCH}/ -type f) $kerneldir/build/
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fi
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if [ "${ARCH}" = "arm64" ]; then
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# arch/arm64/include/asm/xen references arch/arm
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cp -a --parents arch/arm/include/asm/xen $kerneldir/build/
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# arch/arm64/include/asm/opcodes.h references arch/arm
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cp -a --parents arch/arm/include/asm/opcodes.h $kerneldir/build/
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cp -a --parents arch/arm64/kernel/vdso/*gettimeofday.* $kerneldir/build/
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cp -a --parents arch/arm64/kernel/vdso/sigreturn.S $kerneldir/build/
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cp -a --parents arch/arm64/kernel/vdso/note.S $kerneldir/build/
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cp -a --parents arch/arm64/kernel/vdso/gen_vdso_offsets.sh $kerneldir/build/
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cp -a --parents arch/arm64/kernel/module.lds $kerneldir/build/ 2>/dev/null || :
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fi
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if [ "${ARCH}" = "powerpc" ]; then
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# 5.0 needs these files, but don't error if they aren't present in the source
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cp -a --parents arch/${ARCH}/kernel/syscalls/syscall.tbl $kerneldir/build/ 2>/dev/null || :
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cp -a --parents arch/${ARCH}/kernel/syscalls/syscalltbl.sh $kerneldir/build/ 2>/dev/null || :
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cp -a --parents arch/${ARCH}/kernel/syscalls/syscallhdr.sh $kerneldir/build/ 2>/dev/null || :
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fi
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# include the machine specific headers for ARM variants, if available.
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if [ "${ARCH}" = "arm" ]; then
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cp -a --parents arch/${ARCH}/mach-*/include $kerneldir/build/
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# include a few files for 'make prepare'
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cp -a --parents arch/arm/tools/gen-mach-types $kerneldir/build/
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cp -a --parents arch/arm/tools/mach-types $kerneldir/build/
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# ARM syscall table tools only exist for kernels v4.10 or later
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SYSCALL_TOOLS=$(find arch/arm/tools -name "syscall*")
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if [ -n "$SYSCALL_TOOLS" ] ; then
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cp -a --parents $SYSCALL_TOOLS $kerneldir/build/
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fi
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cp -a --parents arch/arm/kernel/module.lds $kerneldir/build/
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fi
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if [ -d arch/${ARCH}/include ]; then
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cp -a --parents arch/${ARCH}/include $kerneldir/build/
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fi
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cp -a include $kerneldir/build
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cp -a --parents lib/vdso/* $kerneldir/build/ 2>/dev/null || :
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cp -a --parents tools/include/tools/le_byteshift.h $kerneldir/build/
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cp -a --parents tools/include/tools/be_byteshift.h $kerneldir/build/
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# required for generate missing syscalls prepare phase
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cp -a --parents $(find arch/x86 -type f -name "syscall_32.tbl") $kerneldir/build
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cp -a --parents $(find arch/arm -type f -name "*.tbl") $kerneldir/build 2>/dev/null || :
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if [ "${ARCH}" = "x86" ]; then
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# files for 'make prepare' to succeed with kernel-devel
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cp -a --parents $(find arch/x86 -type f -name "syscall_32.tbl") $kerneldir/build/
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cp -a --parents $(find arch/x86 -type f -name "syscalltbl.sh") $kerneldir/build/
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cp -a --parents $(find arch/x86 -type f -name "syscallhdr.sh") $kerneldir/build/
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cp -a --parents $(find arch/x86 -type f -name "syscall_64.tbl") $kerneldir/build/
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cp -a --parents arch/x86/tools/relocs_32.c $kerneldir/build/
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cp -a --parents arch/x86/tools/relocs_64.c $kerneldir/build/
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cp -a --parents arch/x86/tools/relocs.c $kerneldir/build/
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cp -a --parents arch/x86/tools/relocs_common.c $kerneldir/build/
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cp -a --parents arch/x86/tools/relocs.h $kerneldir/build/
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cp -a --parents arch/x86/tools/gen-insn-attr-x86.awk $kerneldir/build/ 2>/dev/null || :
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cp -a --parents arch/x86/purgatory/purgatory.c $kerneldir/build/
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# 4.18 + have unified the purgatory files, so we ignore any errors if
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# these files are not present
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cp -a --parents arch/x86/purgatory/sha256.h $kerneldir/build/ 2>/dev/null || :
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cp -a --parents arch/x86/purgatory/sha256.c $kerneldir/build/ 2>/dev/null || :
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cp -a --parents arch/x86/purgatory/stack.S $kerneldir/build/
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cp -a --parents arch/x86/purgatory/string.c $kerneldir/build/ 2>/dev/null || :
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cp -a --parents arch/x86/purgatory/setup-x86_64.S $kerneldir/build/
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cp -a --parents arch/x86/purgatory/entry64.S $kerneldir/build/
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cp -a --parents arch/x86/boot/string.h $kerneldir/build/
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cp -a --parents arch/x86/boot/string.c $kerneldir/build/
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cp -a --parents arch/x86/boot/compressed/string.c $kerneldir/build/ 2>/dev/null || :
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cp -a --parents arch/x86/boot/ctype.h $kerneldir/build/
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# objtool requires these files
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cp -a --parents arch/x86/lib/inat.c $kerneldir/build/ 2>/dev/null || :
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cp -a --parents arch/x86/lib/insn.c $kerneldir/build/ 2>/dev/null || :
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fi
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if [ "${ARCH}" = "mips" ]; then
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cp -a --parents arch/mips/Kbuild.platforms $kerneldir/build/
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cp --parents $(find -type f -name "Platform") $kerneldir/build
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cp --parents arch/mips/boot/tools/relocs* $kerneldir/build
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cp -a --parents arch/mips/kernel/asm-offsets.c $kerneldir/build
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cp -a --parents kernel/time/timeconst.bc $kerneldir/build
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cp -a --parents kernel/bounds.c $kerneldir/build
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cp -a --parents Kbuild $kerneldir/build
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cp -a --parents arch/mips/kernel/syscalls/*.sh $kerneldir/build 2>/dev/null || :
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cp -a --parents arch/mips/kernel/syscalls/*.tbl $kerneldir/build 2>/dev/null || :
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cp -a --parents arch/mips/tools/elf-entry.c $kerneldir/build 2>/dev/null || :
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fi
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# required to build scripts/selinux/genheaders/genheaders
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cp -a --parents security/selinux/include/* $kerneldir/build/
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# copy any localversion files
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cp -a localversion* $kerneldir/build/ 2>/dev/null || :
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)
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# Make sure the Makefile and version.h have a matching timestamp so that
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# external modules can be built
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touch -r $kerneldir/build/Makefile $kerneldir/build/include/generated/uapi/linux/version.h
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# Copy .config to include/config/auto.conf so "make prepare" is unnecessary.
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cp $kerneldir/build/.config $kerneldir/build/include/config/auto.conf
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# make sure these are at least as old as the .config, or rebuilds will trigger
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touch -r $kerneldir/build/.config $kerneldir/build/include/generated/autoconf.h 2>/dev/null || :
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touch -r $kerneldir/build/.config $kerneldir/build/include/config/auto.conf* 2>/dev/null || :
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if [ -e "$kerneldir/build/include/config/auto.conf.cmd" ]; then
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sed -i 's/ifneq "$(CC)" ".*-linux-gcc.*$/ifneq "$(CC)" "gcc"/' "$kerneldir/build/include/config/auto.conf.cmd"
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sed -i 's/ifneq "$(LD)" ".*-linux-ld.bfd.*$/ifneq "$(LD)" "ld"/' "$kerneldir/build/include/config/auto.conf.cmd"
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sed -i 's/ifneq "$(CC_VERSION_TEXT)".*\(gcc.*\)"/ifneq "$(CC_VERSION_TEXT)" "\1"/' "$kerneldir/build/include/config/auto.conf.cmd"
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sed -i 's/ifneq "$(srctree)" ".*"/ifneq "$(srctree)" "."/' "$kerneldir/build/include/config/auto.conf.cmd"
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fi
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# make the scripts python3 safe. We won't be running these, and if they are
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# left as /usr/bin/python rootfs assembly will fail, since we only have python3
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# in the RDEPENDS (and the python3 package does not include /usr/bin/python)
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for ss in $(find $kerneldir/build/scripts -type f -name '*'); do
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sed -i 's,/usr/bin/python2,/usr/bin/env python3,' "$ss"
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sed -i 's,/usr/bin/env python2,/usr/bin/env python3,' "$ss"
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sed -i 's,/usr/bin/python,/usr/bin/env python3,' "$ss"
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done
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chown -R root:root ${D}
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}
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# Ensure we don't race against "make scripts" during cpio
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do_install[lockfiles] = "${TMPDIR}/kernel-scripts.lock"
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FILES_${PN} = "${KERNEL_BUILD_ROOT} ${KERNEL_SRC_PATH}"
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FILES_${PN}-dbg += "${KERNEL_BUILD_ROOT}*/build/scripts/*/.debug/*"
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RDEPENDS_${PN} = "bc python3 flex bison ${TCLIBC}-utils"
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# 4.15+ needs these next two RDEPENDS
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RDEPENDS_${PN} += "openssl-dev util-linux"
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# and x86 needs a bit more for 4.15+
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RDEPENDS_${PN} += "${@bb.utils.contains('ARCH', 'x86', 'elfutils', '', d)}"
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