ci: add clang-tidy development headers to Fedora base image

Prepare to build our own clang-tidy plugin in CI.

.gitlab/ci/docker/fedora36/Dockerfile

@@ -4,6 +4,12 @@ MAINTAINER Ben Boeckel <[email protected]>
 COPY install_rvm.sh /root/install_rvm.sh
 RUN sh /root/install_rvm.sh
 
+FROM fedora:36 AS clang-tidy-headers
+MAINTAINER Kyle Edwards <[email protected]>
+
+COPY install_clang_tidy_headers.sh /root/install_clang_tidy_headers.sh
+RUN sh /root/install_clang_tidy_headers.sh
+
 FROM fedora:36
 MAINTAINER Ben Boeckel <[email protected]>
 
@@ -13,3 +19,6 @@ RUN sh /root/install_deps.sh
 COPY --from=rvm-build /root/rvm.tar /root/rvm.tar
 RUN tar -C /usr/local -xf /root/rvm.tar \
  && rm /root/rvm.tar
+COPY --from=clang-tidy-headers /root/clang-tidy-headers.tar /root/clang-tidy-headers.tar
+RUN tar -C /usr/include -xf /root/clang-tidy-headers.tar \
+ && rm /root/clang-tidy-headers.tar

.gitlab/ci/docker/fedora36/install_clang_tidy_headers.sh

@@ -0,0 +1,18 @@
+#!/bin/sh
+
+set -e
+
+# Packages for building the clang-tidy plugin.
+# TODO: Upstream this as a proper Fedora package.
+dnf install --setopt=install_weak_deps=False -y \
+    'dnf-command(download)' \
+    rpm-build \
+    python3-devel \
+    clang-tools-extra
+clang_source_rpm=$(rpm -q --queryformat '%{SOURCERPM}' clang-tools-extra)
+clang_version=$(rpm -q --queryformat '%{VERSION}' clang-tools-extra)
+dnf download --source -y clang
+rpm -i "$clang_source_rpm"
+rpmbuild -bp /root/rpmbuild/SPECS/clang.spec
+cd "/root/rpmbuild/BUILD/clang-tools-extra-$clang_version.src"
+find clang-tidy -name '*.h' | tar -cf /root/clang-tidy-headers.tar -T -

.gitlab/os-linux.yml

@@ -69,7 +69,7 @@
 ### Fedora
 
 .fedora36:
-    image: "kitware/cmake:ci-fedora36-x86_64-2022-08-30"
+    image: "kitware/cmake:ci-fedora36-x86_64-2022-08-31"
 
     variables:
         GIT_CLONE_PATH: "$CI_BUILDS_DIR/cmake ci/long file name for testing purposes"