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gcc: link $lib/lib -> $lib/$targetConfig correctly and consistently #282236

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gcc: link $lib/lib -> $lib/$targetConfig correctly and consistently #282236

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8 changes: 8 additions & 0 deletions pkgs/development/compilers/gcc/common/builder.nix
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
{ lib
, stdenv
, enableMultilib
, targetConfig
}:

let
Expand Down Expand Up @@ -196,6 +197,13 @@ originalAttrs: (stdenv.mkDerivation (finalAttrs: originalAttrs // {
mkdir -p "$out/''${targetConfig}/lib"
mkdir -p "''${!outputLib}/''${targetConfig}/lib"
'' +
# if cross-compiling, link from $lib/lib to $lib/${targetConfig}.
# since native-compiles have $lib/lib as a directory (not a
# symlink), this ensures that in every case we can assume that
# $lib/lib contains the .so files
lib.optionalString (with stdenv; targetPlatform.config != hostPlatform.config) ''
ln -Ts "''${!outputLib}/''${targetConfig}" $lib/lib
'' +
# Make `lib64` symlinks to `lib`.
lib.optionalString (!enableMultilib && stdenv.hostPlatform.is64bit && !stdenv.hostPlatform.isMips64n32) ''
ln -s lib "$out/''${targetConfig}/lib64"
Expand Down
4 changes: 0 additions & 4 deletions pkgs/development/compilers/gcc/common/libgcc.nix
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Expand Up @@ -83,10 +83,6 @@ in
lib.optionalString (!langC) ''
rm -f $out/lib/libgcc_s.so*
''
+ lib.optionalString (hostPlatform != targetPlatform) ''
mkdir -p $lib/lib/
ln -s ${targetPlatformSlash}lib $lib/lib
''

# TODO(amjoseph): remove the `libgcc_s.so` symlinks below and replace them
# with a `-L${gccForLibs.libgcc}/lib` in cc-wrapper's
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4 changes: 3 additions & 1 deletion pkgs/development/compilers/gcc/default.nix
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Expand Up @@ -103,6 +103,7 @@ let inherit version;
disableBootstrap = atLeast11 && !stdenv.hostPlatform.isDarwin && (atLeast12 -> !profiledCompiler);

inherit (stdenv) buildPlatform hostPlatform targetPlatform;
targetConfig = if targetPlatform != hostPlatform then targetPlatform.config else null;

patches = callFile ./patches {};

Expand All @@ -124,6 +125,7 @@ let inherit version;
buildPlatform
hostPlatform
targetPlatform
targetConfig
patches
crossMingw
stageNameAddon
Expand Down Expand Up @@ -329,7 +331,7 @@ lib.pipe ((callFile ./common/builder.nix {}) ({
++ optional (is7 && targetPlatform.isAarch64) "--enable-fix-cortex-a53-843419"
++ optional (is7 && targetPlatform.isNetBSD) "--disable-libcilkrts";

targetConfig = if targetPlatform != hostPlatform then targetPlatform.config else null;
inherit targetConfig;

buildFlags =
# we do not yet have Nix-driven profiling
Expand Down