fix(macos): ccache: re-enable, show stats, set CCACHE_DIR, limit CCACHE_MAXSIZE

.gitlab/ci/build.yml

@@ -1,7 +1,7 @@
 .build_template:
   stage: build
   extends:
-    - .after_script:build:ccache:upload-when-fail
+    - .after_script:build:ccache-show-stats:upload-failed-job-logs
   image: $ESP_ENV_IMAGE
   tags:
     - build
@@ -16,7 +16,7 @@
   extends:
     - .build_template
     - .before_script:build
-    - .after_script:build:ccache
+    - .after_script:build:ccache-show-stats
   dependencies: # set dependencies to null to avoid missing artifacts issue
   needs:
     - job: fast_template_app
@@ -210,15 +210,16 @@ pytest_build_system_macos:
   extends:
     - .test_build_system_template
     - .before_script:build:macos
-    - .after_script:build:macos:upload-when-fail
+    - .after_script:build:macos:upload-failed-job-logs:ccache-show-stats
     - .rules:build:macos
   tags:
     - macos_shell
   parallel: 3
   variables:
     PYENV_VERSION: "3.8"
-    CI_CCACHE_DISABLE: "1"  # ccache: error: Read-only file system
-
+    # CCACHE_DIR: "/cache/idf_ccache". On macOS, you cannot write to this folder due to insufficient permissions.
+    CCACHE_DIR: "" # ccache will use "$HOME/Library/Caches/ccache".
+    CCACHE_MAXSIZE: "5G" # To preserve the limited Macbook storage. CCACHE automatically prunes old caches to fit the set limit.
 build_docker:
   extends:
     - .before_script:minimal

.gitlab/ci/common.yml

@@ -219,13 +219,14 @@ variables:
     - *setup_tools_and_idf_python_venv
     - fetch_submodules
 
-.after_script:build:macos:upload-when-fail:
+.after_script:build:macos:upload-failed-job-logs:ccache-show-stats:
   after_script:
     # macos is running shell executor, which means it would use
     # the system installed /usr/local/bin/python3 by default.
     # Ensure pyenv and PYENV_VERSION installed
     - eval "$(pyenv init -)"
     - *upload_failed_job_log_artifacts
+    - *show_ccache_statistics
 
 .before_script:build:
   before_script:
@@ -236,11 +237,11 @@ variables:
     - export EXTRA_CFLAGS=${PEDANTIC_CFLAGS}
     - export EXTRA_CXXFLAGS=${PEDANTIC_CXXFLAGS}
 
-.after_script:build:ccache:
+.after_script:build:ccache-show-stats:
   after_script:
     - *show_ccache_statistics
 
-.after_script:build:ccache:upload-when-fail:
+.after_script:build:ccache-show-stats:upload-failed-job-logs:
   after_script:
     - *show_ccache_statistics
     - *upload_failed_job_log_artifacts

tools/ci/dynamic_pipelines/templates/.dynamic_jobs.yml

@@ -7,7 +7,7 @@
 .dynamic_build_template:
   extends:
     - .before_script:build
-    - .after_script:build:ccache:upload-when-fail
+    - .after_script:build:ccache-show-stats:upload-failed-job-logs
   image: $ESP_ENV_IMAGE
   stage: build
   variables: