Enable clang build timing analysis

I didn't enable this by default for clang due to making the build time
10% worse or so. Unfortunate, but tbh devs for whom 10% of build time is
not *that* bad should probably simply enable this.

Change-Id: I8d1e5b6f3f76c649a4e2f115f534f7f97cee46e6

1 files changed, 27 insertions, 0 deletions

diff --git a/misc/clangbuildanalyzer.nix b/misc/clangbuildanalyzer.nix
new file mode 100644
index 000000000..a317e5144
--- /dev/null
+++ b/misc/clangbuildanalyzer.nix
@@ -0,0 +1,27 @@
+# Upstreaming here, can be deleted once it's upstreamed:
+# https://github.com/NixOS/nixpkgs/pull/297102
+{ stdenv, lib, cmake, fetchFromGitHub }:
+stdenv.mkDerivation (finalAttrs: {
+  pname = "clangbuildanalyzer";
+  version = "1.5.0";
+
+  src = fetchFromGitHub {
+    owner = "aras-p";
+    repo = "ClangBuildAnalyzer";
+    rev = "v${finalAttrs.version}";
+    sha256 = "sha256-kmgdk634zM0W0OoRoP/RzepArSipa5bNqdVgdZO9gxo=";
+  };
+
+  nativeBuildInputs = [
+    cmake
+  ];
+
+  meta = {
+    description = "Tool for analyzing Clang's -ftrace-time files";
+    homepage = "https://github.com/aras-p/ClangBuildAnalyzer";
+    maintainers = with lib.maintainers; [ lf- ];
+    license = lib.licenses.unlicense;
+    platforms = lib.platforms.unix;
+    mainProgram = "ClangBuildAnalyzer";
+  };
+})