71 lines
2.1 KiB
Nix
71 lines
2.1 KiB
Nix
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{ lib, stdenv, langJit }:
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{
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# Note [Cross-compiler stripping]
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# gcc requires delicate stripping as it installs ELF files for both
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# HOST and TARGET platforms. It requires according strip tool otherwise
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# strip could remove sections it's not aware of.
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# Example ARM breakage by x86_64 strip: https://bugs.gentoo.org/697428
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#
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# Let's recap the file layout for directories with object files for a
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# cross-compiler:
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#
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# $out (host != target)
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# `- bin: HOST
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# lib/*.{a,o}: HOST
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# `- gcc/<TARGET>/<VERSION>/*.{a,o}: TARGET
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# `- plugin/: HOST
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# `- lib{,32,64,x32}: symlink to lib or identical layout
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# `- libexec/: HOST
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# `- <TARGET>/: TARGET
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#
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# $out (host == target) has identical directory layout.
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#
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# $lib (host != target):
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# `- <TARGET>/lib/*.{la,so}: TARGET
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#
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# $lib (host == target):
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# `- lib/*.{la,so}: HOST
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# The rest of stripDebugList{Host,Target} will be populated in
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# postInstall to disambiguate lib/ object files.
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stripDebugList = [ "bin" "libexec" ];
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stripDebugListTarget = [ stdenv.targetPlatform.config ];
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preFixup = ''
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# Populate most delicated lib/ part of stripDebugList{,Target}
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updateDebugListPaths() {
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local oldOpts
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oldOpts="$(shopt -p nullglob)" || true
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shopt -s nullglob
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pushd $out
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local -ar outHostFiles=(
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lib{,32,64}/*.{a,o,so*}
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lib{,32,64}/gcc/${stdenv.targetPlatform.config}/*/plugin
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)
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local -ar outTargetFiles=(
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lib{,32,64}/gcc/${stdenv.targetPlatform.config}/*/*.{a,o,so*}
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)
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popd
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'' + lib.optionalString (!langJit) ''
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${/*keep indentation*/ ""}
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pushd $lib
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local -ar libHostFiles=(
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lib{,32,64}/*.{a,o,so*}
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)
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local -ar libTargetFiles=(
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lib{,32,64}/${stdenv.targetPlatform.config}/*.{a,o,so*}
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)
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popd
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'' + ''
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eval "$oldOpts"
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stripDebugList="$stripDebugList ''${outHostFiles[*]} ''${libHostFiles[*]}"
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stripDebugListTarget="$stripDebugListTarget ''${outTargetFiles[*]} ''${libTargetFiles[*]}"
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}
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updateDebugListPaths
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'';
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}
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