Add cloudbuild for building chronos images for all C++.

infra/experimental/chronos/Dockerfile

@@ -0,0 +1,3 @@
+FROM gcr.io/cloud-builders/gcloud
+
+RUN apt-get update && apt-get install -y jq

infra/experimental/chronos/build_all.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+# Copyright 2024 Google Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+################################################################################
+
+# Build all C/C++ projects.
+c_project_yaml=$(find projects/ -name project.yaml -exec grep -l 'language: c' {} \;)
+projs=$(echo $c_project_yaml | xargs dirname | xargs basename -a | sort)
+
+for proj in $projs; do
+    fuzz_target=$(curl -s "https://introspector.oss-fuzz.com/api/harness-source-and-executable?project=$proj" | jq --raw-output '.pairs[0].executable')
+    if [ "$fuzz_target" != null ]; then
+        echo ./build_on_cloudbuild.sh $proj $fuzz_target c
+    fi
+done

infra/experimental/chronos/cloudbuild.yaml

@@ -62,4 +62,7 @@ images:
 timeout: 1800s
 serviceAccount: 'projects/oss-fuzz/serviceAccounts/[email protected]'
 options:
-  logging: CLOUD_LOGGING_ONLY
+  logging: CLOUD_LOGGING_ONLY
+tags:
+- ${_PROJECT}
+- chronos

infra/experimental/chronos/cloudbuild_all.yaml

@@ -0,0 +1,34 @@
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+################################################################################
+# CloudBuild for generating Chronos-cached images.
+steps:
+- name: 'gcr.io/cloud-builders/docker'
+  args:
+  - build
+  - -t
+  - gcloud
+  - .
+  dir: infra/experimental/chronos
+- name: 'gcloud'
+  args:
+  - infra/experimental/chronos/build_all.sh
+  entrypoint: /bin/bash
+timeout: 1800s
+serviceAccount: 'projects/oss-fuzz/serviceAccounts/[email protected]'
+options:
+  logging: CLOUD_LOGGING_ONLY
+tags:
+- chronos-all