%global pkgvers 0
%global scdate0 20241117
%global sctags0 v6.12
%global scfilt0 refs/tags/v[0-9].[0-9]*$
%global source0 https://github.com/torvalds/linux.git

%define sysarch linux-gnu
%define targets aarch64;or1k;ppc64le;riscv32;riscv64

Name:           cross-%{sysarch}-kernel-headers
Version:        %(curl -s https://raw.githubusercontent.com/torvalds/linux/%{sctags0}/Makefile | grep -m3 -e "VERSION " -e "PATCHLEVEL " -e "SUBLEVEL " | awk '{print $3}' | sed ':a;N;$!ba;s/\n/./g')
Release:        %{scdate0}.%{pkgvers}%{?dist}
Summary:        Header files of Linux kernel
License:        GPLv2
BuildArch:      noarch

URL:            https://www.kernel.org

BuildRequires:  git make gcc rsync perl-interpreter

%define cpulist %(echo "%{targets}" | sed "s|%{_arch}||g")

%description
Header files of Linux kernel.

%{lua:
for target in string.gmatch(rpm.expand("%{cpulist}"), "[%w_-]+")
do
  print("%package -n "..target.."-"..rpm.expand("%{sysarch}").."-kernel-headers\n")
  print("Summary: Header files of Linux kernel for "..target.." target\n")
  print("Obsoletes: kernel-cross-headers\n")
  print("Provides: "..target.."-kernel-headers\n")
  print("%description -n "..target.."-"..rpm.expand("%{sysarch}").."-kernel-headers\n")
  print("Header files of Linux kernel for "..target.." target.\n")
  print("\n")
end}


%prep
%setup -T -c -n %{name}
git clone --depth 1 -n -b %{sctags0} %{source0} .
git fetch --depth 1 origin %{sctags0}
git reset --hard %{sctags0}
git --no-pager log --format=fuller
%autosetup -D -p 0 -T -c -n %{name}


%build


%install
for target in $(echo "%{cpulist}" | sed 's|;| |g');
do
  echo "Installing for [$target]"
  cross_arch=$target
  case $target in
    arm*)
      cross_arch="arm" ;;
    aarch64*)
      cross_arch="arm64" ;;
    or1k*)
      cross_arch="openrisc" ;;
    ppc*)
      cross_arch="powerpc" ;;
    riscv*)
      cross_arch="riscv" ;;
  esac
  %{__make} ARCH=$cross_arch mrproper
  install -d %{buildroot}%{_prefix}/$target-%{sysarch}
  %{__make} headers_install ARCH=$cross_arch \
    INSTALL_HDR_PATH=%{buildroot}%{_prefix}/$target-%{sysarch}/%{_prefix}
  find %{buildroot}%{_prefix}/$target-%{sysarch} -name .install -delete
  find %{buildroot}%{_prefix}/$target-%{sysarch} -name ..install.cmd -delete
done


%{lua:
for target in string.gmatch(rpm.expand("%{cpulist}"), "[%w_-]+")
do
  print("%files -n "..target.."-"..rpm.expand("%{sysarch}").."-kernel-headers\n")
  print("%dir /usr/"..target.."-"..rpm.expand("%{sysarch}").."/usr/include\n")
  print("/usr/"..target.."-"..rpm.expand("%{sysarch}").."/usr/include/*\n")
  print("\n")
end}


%changelog
* Fri Aug 07 2020 Cristian Balint <cristian.balint@gmail.com>
- git upstream releases