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gcc: fix c++ headers when same triplet cross compiling #240435

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Jan 18, 2024
Merged

gcc: fix c++ headers when same triplet cross compiling #240435

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915fccb
gcc: fix c++ headers when same triplet cross compiling
uri-canva Jun 28, 2023
981b640
cc-wrapper: drop no-longer-necessary hack
Nov 9, 2023
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4 changes: 2 additions & 2 deletions pkgs/build-support/cc-wrapper/default.nix
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Original file line number Diff line number Diff line change
Expand Up @@ -518,10 +518,10 @@ stdenv.mkDerivation {
# additional -isystem flags will confuse gfortran (see
# https://github.com/NixOS/nixpkgs/pull/209870#issuecomment-1500550903)
+ optionalString (libcxx == null && isClang && (useGccForLibs && gccForLibs.langCC or false)) ''
for dir in ${gccForLibs}${lib.optionalString (hostPlatform != targetPlatform) "/${targetPlatform.config}"}/include/c++/*; do
for dir in ${gccForLibs}/include/c++/*; do
echo "-isystem $dir" >> $out/nix-support/libcxx-cxxflags
done
for dir in ${gccForLibs}${lib.optionalString (hostPlatform != targetPlatform) "/${targetPlatform.config}"}/include/c++/*/${targetPlatform.config}; do
for dir in ${gccForLibs}/include/c++/*/${targetPlatform.config}; do
echo "-isystem $dir" >> $out/nix-support/libcxx-cxxflags
done
''
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2 changes: 2 additions & 0 deletions pkgs/development/compilers/gcc/common/configure-flags.nix
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Expand Up @@ -135,6 +135,8 @@ let
# We pick "/" path to effectively avoid sysroot offset and make it work
# as a native case.
"--with-build-sysroot=/"
# Same with the stdlibc++ headers embedded in the gcc output
"--with-gxx-include-dir=${placeholder "out"}/include/c++/${version}/"
]

# Basic configuration
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