4513a43d53
Co-authored-by: Patrick Linnane <patrick@linnane.io> Co-authored-by: Carlo Cabrera <github@carlo.cab> Co-authored-by: Thierry Moisan <thierry.moisan@gmail.com> Co-authored-by: Mike McQuaid <mike@mikemcquaid.com>
88 lines
2.7 KiB
Ruby
88 lines
2.7 KiB
Ruby
# typed: true # rubocop:todo Sorbet/StrictSigil
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# frozen_string_literal: true
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require "compilers"
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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.match? Version.formula_optionally_versioned_regex(:glibc)
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old_prefix, new_prefix = relocation.replacement_pair_for(:prefix)
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elf_files.each do |file|
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file.ensure_writable do
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change_rpath!(file, old_prefix, 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 false 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, "$ORIGIN") }
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lib_path = "#{new_prefix}/lib"
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rpath << lib_path unless rpath.include? lib_path
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# Add GCC's lib directory (as of GCC 12+) to RPATH when there is existing versioned linkage.
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# This prevents broken linkage when pouring bottles built with an old GCC formula.
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unless name.match?(Version.formula_optionally_versioned_regex(:gcc))
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rpath.map! { |rp| rp.sub(%r{lib/gcc/\d+$}, "lib/gcc/current") }
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end
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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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true
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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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end
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