kernel.spec

%global debug_package %{nil}

Name: %{_cross_os}kernel
Version: 5.4.16
Release: 1%{?dist}
Summary: The Linux kernel
License: GPL-2.0 WITH Linux-syscall-note
URL: https://www.kernel.org/
# Use latest-srpm-url.sh to get this.
Source0: https://cdn.amazonlinux.com/blobstore/8a2ede840234ebc72d835fab144162ba8184b8aa7df163a5d36aad2d3c85529b/kernel-5.4.16-8.72.amzn2.src.rpm
Source100: config-bottlerocket
Patch0001: 0001-lustrefsx-Disable-Werror-stringop-overflow.patch
BuildRequires: bc
BuildRequires: elfutils-devel
BuildRequires: hostname
BuildRequires: kmod
BuildRequires: openssl-devel

%global kernel_sourcedir %{_cross_usrsrc}/kernels
%global kernel_libdir %{_cross_libdir}/modules/%{version}

%description
%{summary}.

%package devel
Summary: Configured Linux kernel source for module building
Requires: %{_cross_os}filesystem

%description devel
%{summary}.

%package modules
Summary: Modules for the Linux kernel

%description modules
%{summary}.

%package headers
Summary: Header files for the Linux kernel for use by glibc

%description headers
%{summary}.

%prep
rpm2cpio %{SOURCE0} | cpio -iu linux-%{version}.tar config-%{_cross_arch} "*.patch"
tar -xof linux-%{version}.tar; rm linux-%{version}.tar
%setup -TDn linux-%{version}
# Patches from the Source0 SRPM
for patch in ../*.patch; do
    patch -p1 <"$patch"
done
# Patches listed in this spec (Patch0001...)
%autopatch -p1
KCONFIG_CONFIG="arch/%{_cross_karch}/configs/%{_cross_vendor}_defconfig" \
    ARCH="%{_cross_karch}" \
    scripts/kconfig/merge_config.sh ../config-%{_cross_arch} %{SOURCE100}
rm -f ../config-%{_cross_arch} ../*.patch

%global kmake \
make -s\\\
  ARCH="%{_cross_karch}"\\\
  CROSS_COMPILE="%{_cross_target}-"\\\
  INSTALL_HDR_PATH="%{buildroot}%{_cross_prefix}"\\\
  INSTALL_MOD_PATH="%{buildroot}%{_cross_prefix}"\\\
  INSTALL_MOD_STRIP=1\\\
%{nil}

%build
%kmake mrproper
%kmake %{_cross_vendor}_defconfig
%kmake %{?_smp_mflags} %{_cross_kimage}
%kmake %{?_smp_mflags} modules

%install
%kmake headers_install
%kmake modules_install

install -d %{buildroot}/boot
install -T -m 0755 arch/%{_cross_karch}/boot/%{_cross_kimage} %{buildroot}/boot/vmlinuz
install -m 0644 .config %{buildroot}/boot/config
install -m 0644 System.map %{buildroot}/boot/System.map

find %{buildroot}%{_cross_prefix} \
   \( -name .install -o -name .check -o \
      -name ..install.cmd -o -name ..check.cmd \) -delete

# files for external module compilation
(
  find * -name Kbuild\* -type f -print  \
    -o -name Kconfig\* -type f -print \
    -o -name Makefile\* -type f -print \
    -o -name module.lds -type f -print \
    -o -name Platform -type f -print
  find arch/*/include/ include/ -type f -o -type l
  find scripts/ -executable -type f
  find scripts/ ! \( -name Makefile\* -o -name Kbuild\* \) -type f
  echo .config
  echo Module.symvers
  echo System.map
) | sort -u > kernel_devel_files

# remove x86 intermediate files like generated/asm/.syscalls_32.h.cmd
sed -i '/asm\/.*\.cmd$/d' kernel_devel_files

## Create squashfs of kernel-devel files (ie. /usr/src/kernels/<version>)
mkdir src_squashfs
for file in $(cat kernel_devel_files); do
  install -D ${file} src_squashfs/%{version}/${file}
done
mksquashfs src_squashfs kernel-devel.squashfs
install -D kernel-devel.squashfs %{buildroot}%{_cross_datadir}/bottlerocket/kernel-devel.squashfs
install -d %{buildroot}%{kernel_sourcedir}

# Replace the incorrect links from modules_install. These will be bound
# into a host container (and unused in the host) so they must not point
# to %{_cross_usrsrc} (eg. /x86_64-bottlerocket-linux-gnu/sys-root/...)
rm -f %{buildroot}%{kernel_libdir}/build %{buildroot}%{kernel_libdir}/source
ln -sf %{_usrsrc}/kernels/%{version} %{buildroot}%{kernel_libdir}/build
ln -sf %{_usrsrc}/kernels/%{version} %{buildroot}%{kernel_libdir}/source

%files
%license COPYING LICENSES/preferred/GPL-2.0 LICENSES/exceptions/Linux-syscall-note
%{_cross_attribution_file}
/boot/vmlinuz
/boot/config
/boot/System.map

%files modules
%dir %{_cross_libdir}/modules
%{_cross_libdir}/modules/*

%files headers
%dir %{_cross_includedir}/asm
%dir %{_cross_includedir}/asm-generic
%dir %{_cross_includedir}/drm
%dir %{_cross_includedir}/linux
%dir %{_cross_includedir}/misc
%dir %{_cross_includedir}/mtd
%dir %{_cross_includedir}/rdma
%dir %{_cross_includedir}/scsi
%dir %{_cross_includedir}/sound
%dir %{_cross_includedir}/video
%dir %{_cross_includedir}/xen
%{_cross_includedir}/asm/*
%{_cross_includedir}/asm-generic/*
%{_cross_includedir}/drm/*
%{_cross_includedir}/linux/*
%{_cross_includedir}/misc/*
%{_cross_includedir}/mtd/*
%{_cross_includedir}/rdma/*
%{_cross_includedir}/scsi/*
%{_cross_includedir}/sound/*
%{_cross_includedir}/video/*
%{_cross_includedir}/xen/*

%files devel
%dir %{kernel_sourcedir}
%{_cross_datadir}/bottlerocket/kernel-devel.squashfs

%changelog