97 lines
2.7 KiB
Ruby
97 lines
2.7 KiB
Ruby
# typed: true
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# frozen_string_literal: true
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class Keg
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def relocate_dynamic_linkage(relocation)
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# Patching the dynamic linker of glibc breaks it.
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return if name == "glibc"
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# Patching patchelf using itself fails with "Text file busy" or SIGBUS.
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return if name == "patchelf"
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elf_files.each do |file|
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file.ensure_writable do
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change_rpath(file, relocation.old_prefix, relocation.new_prefix)
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end
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end
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end
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def change_rpath(file, old_prefix, new_prefix)
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return if !file.elf? || !file.dynamic_elf?
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updated = {}
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old_rpath = file.rpath
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new_rpath = if old_rpath
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rpath = old_rpath.split(":")
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.map { |x| x.sub(old_prefix, new_prefix) }
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.select { |x| x.start_with?(new_prefix, "$ORIGIN") }
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lib_path = "#{new_prefix}/lib"
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rpath << lib_path unless rpath.include? lib_path
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rpath.join(":")
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end
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updated[:rpath] = new_rpath if old_rpath != new_rpath
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old_interpreter = file.interpreter
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new_interpreter = if old_interpreter.nil?
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nil
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elsif File.readable? "#{new_prefix}/lib/ld.so"
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"#{new_prefix}/lib/ld.so"
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else
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old_interpreter.sub old_prefix, new_prefix
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end
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updated[:interpreter] = new_interpreter if old_interpreter != new_interpreter
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file.patch!(interpreter: updated[:interpreter], rpath: updated[:rpath])
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end
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def detect_cxx_stdlibs(options = {})
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skip_executables = options.fetch(:skip_executables, false)
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results = Set.new
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elf_files.each do |file|
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next unless file.dynamic_elf?
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next if file.binary_executable? && skip_executables
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dylibs = file.dynamically_linked_libraries
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results << :libcxx if dylibs.any? { |s| s.include? "libc++.so" }
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results << :libstdcxx if dylibs.any? { |s| s.include? "libstdc++.so" }
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end
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results.to_a
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end
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def elf_files
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hardlinks = Set.new
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elf_files = []
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path.find do |pn|
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next if pn.symlink? || pn.directory?
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next if !pn.dylib? && !pn.binary_executable?
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# If we've already processed a file, ignore its hardlinks (which have the
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# same dev ID and inode). This prevents relocations from being performed
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# on a binary more than once.
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next unless hardlinks.add? [pn.stat.dev, pn.stat.ino]
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elf_files << pn
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end
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elf_files
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end
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def self.relocation_formulae
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["patchelf"]
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end
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def self.bottle_dependencies
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@bottle_dependencies ||= begin
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formulae = relocation_formulae
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gcc = Formula["gcc"]
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if !Homebrew::EnvConfig.force_homebrew_on_linux? &&
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DevelopmentTools.non_apple_gcc_version("gcc") < gcc.version.to_i
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formulae += gcc.recursive_dependencies.map(&:name)
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formulae << gcc.name
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end
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formulae
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end
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end
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end
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