From 180af77df4d55a34733f2f8d8fdfd8b42ae7b71a Mon Sep 17 00:00:00 2001
From: Ben Boeckel <ben.boeckel@kitware.com>
Date: Fri, 28 Feb 2025 14:37:30 +0100
Subject: [PATCH] gitlab-ci: use `clang-tidy-cache`

Should help keep clang-tidy jobs to a reasonable runtime.
---
 .gitlab/ci/clang-tidy-cache.sh           | 37 ++++++++++++++++++++++++
 .gitlab/ci/configure_fedora41_tidy.cmake |  5 ++--
 .gitlab/os-linux.yml                     |  1 +
 3 files changed, 41 insertions(+), 2 deletions(-)
 create mode 100755 .gitlab/ci/clang-tidy-cache.sh

diff --git a/.gitlab/ci/clang-tidy-cache.sh b/.gitlab/ci/clang-tidy-cache.sh
new file mode 100755
index 0000000000..0aea1d66a5
--- /dev/null
+++ b/.gitlab/ci/clang-tidy-cache.sh
@@ -0,0 +1,37 @@
+#!/bin/sh
+
+set -e
+
+# Skip for non-tidy builds.
+if ! echo "$CMAKE_CONFIGURATION" | grep -q -e 'tidy'; then
+    exit 0
+fi
+
+readonly version="0.4.0-kitware-ci-20220709"
+
+case "$( uname -s )-$(uname -m)" in
+    Linux-x86_64)
+        shatool="sha256sum"
+        sha256sum="49c2540695da9834895897633c8323d5685df88f32b71da1ac373fff9426a063"
+        platform="linux-amd64"
+        ;;
+    *)
+        echo "Unrecognized platform $( uname -s )-$( uname -m )"
+        exit 1
+        ;;
+esac
+readonly shatool
+readonly sha256sum
+readonly platform
+
+readonly filename="clang-tidy-cache-$version-$platform"
+
+readonly url="https://gitlab.kitware.com/api/v4/projects/6955/packages/generic/clang-tidy-cache/v$version"
+
+cd .gitlab
+
+echo "$sha256sum  $filename" > clang-tidy-cache.sha256sum
+curl -OL "$url/$filename"
+$shatool --check clang-tidy-cache.sha256sum
+mv "$filename" clang-tidy-cache
+chmod +x clang-tidy-cache
diff --git a/.gitlab/ci/configure_fedora41_tidy.cmake b/.gitlab/ci/configure_fedora41_tidy.cmake
index 951da59f61..f2776f2cac 100644
--- a/.gitlab/ci/configure_fedora41_tidy.cmake
+++ b/.gitlab/ci/configure_fedora41_tidy.cmake
@@ -1,4 +1,5 @@
-set(CMAKE_C_CLANG_TIDY "/usr/bin/clang-tidy" "--header-filter=$ENV{CI_PROJECT_DIR}" CACHE STRING "")
-set(CMAKE_CXX_CLANG_TIDY "/usr/bin/clang-tidy" "--header-filter=$ENV{CI_PROJECT_DIR}" CACHE STRING "")
+set(CMAKE_C_CLANG_TIDY "clang-tidy-cache" "--header-filter=$ENV{CI_PROJECT_DIR}" CACHE STRING "")
+set(CMAKE_CXX_CLANG_TIDY "clang-tidy-cache" "--header-filter=$ENV{CI_PROJECT_DIR}" CACHE STRING "")
+set(CMAKE_EXPORT_COMPILE_COMMANDS ON CACHE BOOL "")
 
 include("${CMAKE_CURRENT_LIST_DIR}/configure_fedora41.cmake")
diff --git a/.gitlab/os-linux.yml b/.gitlab/os-linux.yml
index 5ce89a1b71..f990fd6e30 100644
--- a/.gitlab/os-linux.yml
+++ b/.gitlab/os-linux.yml
@@ -117,6 +117,7 @@
 
     script:
         - *before_script_linux
+        - .gitlab/ci/clang-tidy-cache.sh
         - .gitlab/ci/sccache.sh
         - sccache --start-server
         - sccache --show-stats
-- 
GitLab