Patch cc-wrapper to replace --tmpdir flag

tweag · Oct 2, 2023 · 925f8e4 · 925f8e4
1 parent c630600
commit 925f8e4
Showing 1 changed file with 62 additions and 0 deletions.
diff --git a/testing/go-bzlmod/tests/nixpkgs_repositories.bzl b/testing/go-bzlmod/tests/nixpkgs_repositories.bzl
@@ -3,6 +3,67 @@ load("@rules_nixpkgs_cc//:cc.bzl", "nixpkgs_cc_configure")
 load("@rules_nixpkgs_java//:java.bzl", "nixpkgs_java_configure")
 load("@rules_nixpkgs_go//:go.bzl", "nixpkgs_go_configure")
 
+_PATCHED_CC = """\
+let
+  ccPkgs = import <nixpkgs> { config = { }; overlays = [ ]; };
+  pkgs = ccPkgs.buildPackages;
+  stdenv = ccPkgs.stdenv;
+  # The original `postLinkSignHook` from nixpkgs assumes `codesign_allocate` is
+  # in the PATH which is not the case when using our cc_wrapper. Set
+  # `CODESIGN_ALLOCATE` to an absolute path here and override the hook for
+  # `darwinCC` below.
+  postLinkSignHook =
+    with pkgs; writeTextFile {
+      name = "post-link-sign-hook";
+      executable = true;
+
+      text = ''
+        CODESIGN_ALLOCATE=$${darwin.cctools}/bin/codesign_allocate \
+          $${darwin.sigtool}/bin/codesign -f -s - "$$linkerOutput"
+      '';
+    };
+  darwinCC =
+    # Work around https://github.com/NixOS/nixpkgs/issues/42059.
+    # See also https://github.com/NixOS/nixpkgs/pull/41589.
+    pkgs.wrapCCWith rec {
+      cc = stdenv.cc.cc;
+      bintools = stdenv.cc.bintools.override { inherit postLinkSignHook; };
+      extraBuildCommands = with pkgs.darwin.apple_sdk.frameworks; ''
+        sed -i.bak 's#--tmpdir cc-params.XXXXXX#"''$${TMPDIR:-/tmp}/cc-params.XXXXXX"#' $$out/bin/cc
+        echo "-Wno-unused-command-line-argument" >> $$out/nix-support/cc-cflags
+        echo "-Wno-elaborated-enum-base" >> $$out/nix-support/cc-cflags
+        echo "-isystem $${pkgs.llvmPackages.libcxx.dev}/include/c++/v1" >> $$out/nix-support/cc-cflags
+        echo "-isystem $${pkgs.llvmPackages.clang-unwrapped.lib}/lib/clang/$${cc.version}/include" >> $$out/nix-support/cc-cflags
+        echo "-F$${CoreFoundation}/Library/Frameworks" >> $$out/nix-support/cc-cflags
+        echo "-F$${CoreServices}/Library/Frameworks" >> $$out/nix-support/cc-cflags
+        echo "-F$${Security}/Library/Frameworks" >> $$out/nix-support/cc-cflags
+        echo "-F$${Foundation}/Library/Frameworks" >> $$out/nix-support/cc-cflags
+        echo "-L$${pkgs.llvmPackages.libcxx}/lib" >> $$out/nix-support/cc-cflags
+        echo "-L$${pkgs.llvmPackages.libcxxabi}/lib" >> $$out/nix-support/cc-cflags
+        echo "-L$${pkgs.libiconv}/lib" >> $$out/nix-support/cc-cflags
+        echo "-L$${pkgs.darwin.libobjc}/lib" >> $$out/nix-support/cc-cflags
+        echo "-resource-dir=$${pkgs.stdenv.cc}/resource-root" >> $$out/nix-support/cc-cflags
+      '';
+    };
+in
+pkgs.buildEnv (
+  let
+    cc = if stdenv.isDarwin then darwinCC else stdenv.cc;
+  in
+  {
+    name = "bazel-$${cc.name}-wrapper";
+    # XXX: `gcov` is missing in `/bin`.
+    #   It exists in `stdenv.cc.cc` but that collides with `stdenv.cc`.
+    paths = [ cc cc.bintools ] ++ pkgs.lib.optional pkgs.stdenv.isDarwin pkgs.darwin.cctools;
+    pathsToLink = [ "/bin" ];
+    passthru = {
+      inherit (cc) isClang targetPrefix;
+      orignalName = cc.name;
+    };
+  }
+)
+"""
+
 def nixpkgs_repositories(*, bzlmod):
     nixpkgs_local_repository(
         name = "nixpkgs",
@@ -14,6 +75,7 @@ def nixpkgs_repositories(*, bzlmod):
         name = "nixpkgs_config_cc",
         repository = "@nixpkgs",
         register = not bzlmod,
+        nix_file_content = _PATCHED_CC,
     )
 
     nixpkgs_java_configure(