chromebrew/packages/glibc.rb

require 'package'

class Glibc < Package
  description 'The GNU C Library project provides the core libraries for GNU/Linux systems.'
  homepage 'https://www.gnu.org/software/libc/'
  version '2.41-4'
  license 'LGPL-2.1+, BSD, HPND, ISC, inner-net, rc, and PCRE'
  compatibility 'all'
  source_url "https://ftpmirror.gnu.org/glibc/glibc-#{version.partition('-')[0]}.tar.xz"
  source_sha256 'a5a26b22f545d6b7d7b3dd828e11e428f24f4fac43c934fb071b6a7d0828e901'
  binary_compression 'tar.zst'

  binary_sha256({
    aarch64: '609104350dd5e50382472f4409d57ceab099d65839adf891b77621adf447f1f1',
     armv7l: '609104350dd5e50382472f4409d57ceab099d65839adf891b77621adf447f1f1',
       i686: '4b7a2d8025430f183b85d982924a9764b31c485e4c8938753858465853ba25d3',
     x86_64: '5d5da0128e3054020c507d883d5f27c0b8a978263b799f068c845393b5fffe17'
  })

  depends_on 'gawk'    => :build
  depends_on 'libidn2' => :build
  depends_on 'texinfo' => :build
  depends_on 'libxcrypt' # Latest glibc removed libcrypt.so, add this for backward compatibility

  conflicts_ok
  no_env_options
  no_shrink
  print_source_bashrc

  def self.patch
    system "git clone --depth=1 https://github.com/chromebrew/crew-package-glibc -b #{version}"
    system 'filefix'

    Dir.glob('crew-package-glibc/patches/*.patch') do |patch|
      puts "Applying #{patch}...".yellow
      system 'patch', '-p1', '-i', patch
    end
  end

  def self.build
    cc_macro_list = %W[
      -DCREW_PREFIX=\\"#{CREW_PREFIX}\\"
      -DCREW_GLIBC_PREFIX=\\"#{CREW_GLIBC_PREFIX}\\"
      -DCREW_GLIBC_INTERPRETER=\\"#{CREW_GLIBC_INTERPRETER}\\"
      -DSYSTEM_GLIBC_INTERPRETER=\\"/#{ARCH_LIB}/#{File.basename(CREW_GLIBC_INTERPRETER)}\\"
    ]

    build_env = {
      CFLAGS:   "-O3 -pipe -fPIC -fno-lto #{cc_macro_list.join(' ')}",
      CXXFLAGS: "-O3 -pipe -fPIC -fno-lto #{cc_macro_list.join(' ')}",
      LDFLAGS:  '-fno-lto'
    }

    config_opts = %W[
      --prefix=#{CREW_PREFIX}
      --libdir=#{CREW_LIB_PREFIX}
      --mandir=#{CREW_MAN_PREFIX}
      --with-headers=#{CREW_PREFIX}/include
      --with-bugurl=https://github.com/chromebrew/chromebrew/issues/new
      --enable-bind-now
      --enable-fortify-source
      --enable-kernel=3.2
      --enable-shared
      --disable-nscd
      --disable-multilib
      --disable-profile
      --disable-sanity-checks
      --disable-werror
      --without-cvs
      --without-selinux
    ]

    config_opts << '--enable-cet' unless ARCH == 'i686'

    FileUtils.mkdir_p %w[builddir]

    Dir.chdir('builddir') do
      File.write 'configparms', <<~EOF
        slibdir=#{CREW_GLIBC_PREFIX}
        rtlddir=#{CREW_GLIBC_PREFIX}
        sbindir=#{CREW_PREFIX}/bin
        rootsbindir=#{CREW_PREFIX}/bin
      EOF

      system build_env.transform_keys(&:to_s), '../configure', *config_opts, no_preload_hacks: true
      system "make PARALLELMFLAGS='-j #{CREW_NPROC}'", no_preload_hacks: true
    end

    arch_flag = case ARCH
                when 'x86_64'
                  '-m64'
                when 'i686'
                  '-m32'
                else
                  '-mfloat-abi=hard -mfpu=vfpv3-d16 -march=armv7-a+fp'
                end

    # Link with ChromeOS's glibc libraries to ensure compatibility
    system <<~CMD, chdir: 'crew-package-glibc/crew-preload', no_preload_hacks: true
      cc -B #{CREW_GLIBC_PREFIX} #{CREW_COMMON_FLAGS} #{arch_flag} -fuse-ld=mold \
        #{cc_macro_list.join(' ')} ../prebuilt/#{ARCH.sub('aarch64', 'armv7l')}/lib{c,dl}-*.so \
        -shared -fvisibility=hidden -Wl,-soname,crew-preload.so \
        main.c hooks.c -o ../crew-preload.so
    CMD
  end

  def self.install
    FileUtils.mkdir_p %W[#{CREW_DEST_PREFIX}/etc/env.d #{CREW_DEST_PREFIX}/etc/ld.so.conf.d #{CREW_DEST_LIB_PREFIX}]

    system "make DESTDIR=#{CREW_DEST_DIR} install", chdir: 'builddir'
    system "make DESTDIR=#{CREW_DEST_DIR} localedata/install-locales", chdir: 'builddir'

    File.write "#{CREW_DEST_PREFIX}/etc/ld.so.conf", <<~EOF
      # ld.so.conf autogenerated by Chromebrew
      # DO NOT put your changes here. Instead, put them in
      # #{CREW_PREFIX}/etc/ld.so.conf.d/ instead.

      include #{CREW_PREFIX}/etc/ld.so.conf.d/*.conf
      #{CREW_GLIBC_PREFIX}
      #{CREW_LIB_PREFIX}
      include /etc/ld.so.conf
    EOF

    # install crew-audit
    FileUtils.install 'crew-package-glibc/crew-preload.so', File.join(CREW_DEST_LIB_PREFIX, 'crew-preload.so'), mode: 0o755
  end

  def self.postinstall
    # update search cache for ld.so
    system "#{CREW_PREFIX}/bin/ldconfig", %i[out err] => File::NULL
  end
end