f5c11fa342
For most formulae, the bottles need a minimum libstdc++ rather than a minimum GCC version. This is particularly important when building on Ubuntu where the default compiler version is older than libstdc++. So, checking the host libstdc++ version is a more accurate way to determine whether brew GCC is needed at runtime. This can be improved in the future to check symbol versions (e.g. GLIBCXX, CXXABI, GLIBC) which can allow some bottles to be installed even with older glibc/libstdc++.
59 lines
1.8 KiB
Ruby
59 lines
1.8 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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require "os/linux/libstdcxx"
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module OS
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module Linux
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module LinkageChecker
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# Libraries provided by glibc and gcc.
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SYSTEM_LIBRARY_ALLOWLIST = %W[
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ld-linux-x86-64.so.2
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ld-linux-aarch64.so.1
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libanl.so.1
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libatomic.so.1
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libc.so.6
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libdl.so.2
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libm.so.6
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libmvec.so.1
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libnss_files.so.2
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libpthread.so.0
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libresolv.so.2
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librt.so.1
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libthread_db.so.1
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libutil.so.1
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libgcc_s.so.1
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libgomp.so.1
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#{OS::Linux::Libstdcxx::SONAME}
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libquadmath.so.0
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].freeze
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private
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def check_dylibs(rebuild_cache:)
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super
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# glibc and gcc are implicit dependencies.
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# No other linkage to system libraries is expected or desired.
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@unwanted_system_dylibs = @system_dylibs.reject do |s|
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SYSTEM_LIBRARY_ALLOWLIST.include? File.basename(s)
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end
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# We build all formulae with an RPATH that includes the gcc formula's runtime lib directory.
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# See: https://github.com/Homebrew/brew/blob/e689cc07/Library/Homebrew/extend/os/linux/extend/ENV/super.rb#L53
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# This results in formulae showing linkage with gcc whenever it is installed, even if no dependency is
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# declared.
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# See discussions at:
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# https://github.com/Homebrew/brew/pull/13659
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# https://github.com/Homebrew/brew/pull/13796
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# TODO: Find a nicer way to handle this. (e.g. examining the ELF file to determine the required libstdc++.)
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@undeclared_deps.delete("gcc")
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@indirect_deps.delete("gcc")
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end
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end
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end
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end
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LinkageChecker.prepend(OS::Linux::LinkageChecker)
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