132 lines
4.2 KiB
Ruby
132 lines
4.2 KiB
Ruby
# typed: true
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# frozen_string_literal: true
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module Homebrew
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module Install
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# This is a list of known paths to the host dynamic linker on Linux if
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# the host glibc is new enough. The symlink_ld_so method will fail if
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# the host linker cannot be found in this list.
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DYNAMIC_LINKERS = %w[
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/lib64/ld-linux-x86-64.so.2
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/lib64/ld64.so.2
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/lib/ld-linux.so.3
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/lib/ld-linux.so.2
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/lib/ld-linux-aarch64.so.1
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/lib/ld-linux-armhf.so.3
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/system/bin/linker64
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/system/bin/linker
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].freeze
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private_constant :DYNAMIC_LINKERS
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# We link GCC runtime libraries that are not specifically used for Fortran,
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# which are linked by the GCC formula. We only use the versioned shared libraries
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# as the other shared and static libraries are only used at build time where
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# GCC can find its own libraries.
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GCC_RUNTIME_LIBS = %w[
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libatomic.so.1
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libgcc_s.so.1
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libgomp.so.1
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libstdc++.so.6
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].freeze
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private_constant :GCC_RUNTIME_LIBS
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def self.perform_preinstall_checks(all_fatal: false, cc: nil)
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generic_perform_preinstall_checks(all_fatal: all_fatal, cc: cc)
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symlink_ld_so
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setup_preferred_gcc_libs
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end
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def self.global_post_install
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generic_global_post_install
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symlink_ld_so
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setup_preferred_gcc_libs
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end
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def self.check_cpu
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return if Hardware::CPU.intel? && Hardware::CPU.is_64_bit?
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return if Hardware::CPU.arm?
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message = "Sorry, Homebrew does not support your computer's CPU architecture!"
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if Hardware::CPU.ppc64le?
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message += <<~EOS
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For OpenPOWER Linux (PPC64LE) support, see:
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#{Formatter.url("https://github.com/homebrew-ppc64le/brew")}
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EOS
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end
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abort message
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end
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private_class_method :check_cpu
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def self.symlink_ld_so
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brew_ld_so = HOMEBREW_PREFIX/"lib/ld.so"
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ld_so = HOMEBREW_PREFIX/"opt/glibc/bin/ld.so"
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unless ld_so.readable?
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ld_so = DYNAMIC_LINKERS.find { |s| File.executable? s }
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if ld_so.blank?
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raise "Unable to locate the system's dynamic linker" unless brew_ld_so.readable?
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return
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end
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end
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return if brew_ld_so.readable? && (brew_ld_so.readlink == ld_so)
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FileUtils.mkdir_p HOMEBREW_PREFIX/"lib"
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FileUtils.ln_sf ld_so, brew_ld_so
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end
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private_class_method :symlink_ld_so
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def self.setup_preferred_gcc_libs
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gcc_opt_prefix = HOMEBREW_PREFIX/"opt/#{OS::LINUX_PREFERRED_GCC_RUNTIME_FORMULA}"
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glibc_installed = (HOMEBREW_PREFIX/"opt/glibc/bin/ld.so").readable?
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return unless gcc_opt_prefix.readable?
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if glibc_installed
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ld_so_conf_d = HOMEBREW_PREFIX/"etc/ld.so.conf.d"
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unless ld_so_conf_d.exist?
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ld_so_conf_d.mkpath
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FileUtils.chmod "go-w", ld_so_conf_d
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end
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# Add gcc to ld search paths
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ld_gcc_conf = ld_so_conf_d/"50-homebrew-preferred-gcc.conf"
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ld_gcc_conf_content = <<~EOS
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# This file is generated by Homebrew. Do not modify.
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#{gcc_opt_prefix}/lib/gcc/current
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EOS
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if !ld_gcc_conf.exist? || (ld_gcc_conf.read != ld_gcc_conf_content)
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ld_gcc_conf.atomic_write ld_gcc_conf_content
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FileUtils.chmod "u=rw,go-wx", ld_gcc_conf
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FileUtils.rm_f HOMEBREW_PREFIX/"etc/ld.so.cache"
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system HOMEBREW_PREFIX/"opt/glibc/sbin/ldconfig"
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end
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else
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odie "#{HOMEBREW_PREFIX}/lib does not exist!" unless (HOMEBREW_PREFIX/"lib").readable?
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end
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GCC_RUNTIME_LIBS.each do |library|
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gcc_library_symlink = HOMEBREW_PREFIX/"lib/#{library}"
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if glibc_installed
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# Remove legacy symlinks
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FileUtils.rm gcc_library_symlink if gcc_library_symlink.symlink?
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else
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gcc_library = gcc_opt_prefix/"lib/gcc/current/#{library}"
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# Skip if the link target doesn't exist.
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next unless gcc_library.readable?
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# Also skip if the symlink already exists.
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next if gcc_library_symlink.readable? && (gcc_library_symlink.readlink == gcc_library)
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FileUtils.ln_sf gcc_library, gcc_library_symlink
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end
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end
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end
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private_class_method :setup_preferred_gcc_libs
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end
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end
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