llvmPackages.clang: Drop CLANG_DEFAULT_CXX_STDLIB

This is better handled in the cc-wrapper, and makes it possible to avoid
rebuilding clang in some scenarios.

It also appears to be unnecessary since the cc-wrapper already passes
-stdlib=libc++ where needed.

See: https://github.com/NixOS/nixpkgs/blob/8885a1e21ad43f8031c738a08029cd1d4dcbc2f7/pkgs/build-support/cc-wrapper/default.nix#L603
Signed-off-by: Peter Waller <p@pwaller.net>
This commit is contained in:
Peter Waller
2024-10-27 15:25:04 +00:00
parent 4b192e6fe3
commit 9917c9705f
@@ -72,9 +72,7 @@ let
# `clang-pseudo-gen`: https://github.com/llvm/llvm-project/commit/cd2292ef824591cc34cc299910a3098545c840c7
"-DCLANG_TIDY_CONFUSABLE_CHARS_GEN=${buildLlvmTools.libclang.dev}/bin/clang-tidy-confusable-chars-gen"
"-DCLANG_PSEUDO_GEN=${buildLlvmTools.libclang.dev}/bin/clang-pseudo-gen"
]) ++ lib.optionals (stdenv.targetPlatform.useLLVM or false) [
"-DCLANG_DEFAULT_CXX_STDLIB=ON"
] ++ lib.optional (lib.versionAtLeast release_version "20") "-DLLVM_DIR=${libllvm.dev}/lib/cmake/llvm"
]) ++ lib.optional (lib.versionAtLeast release_version "20") "-DLLVM_DIR=${libllvm.dev}/lib/cmake/llvm"
++ devExtraCmakeFlags;
postPatch = ''