[ARROW-14880] [C++][CI] Enable ccache on macOS CI builds

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 7.0.0
• Component/s: C++, Continuous Integration
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/30406
• Assignee: Yibo Cai
• Reporter: Antoine Pitrou
• Created: 25/Nov/21 12:41
• Updated: 11/Jan/23 08:43
• Resolved: 29/Nov/21 03:57

Description

We could install and enable ccache on macOS Github Actions jobs. It would probably speed up a lot of builds.

Apparently ccache is available on Homebrew. Here is an example using it:
https://github.com/azerothcore/azerothcore-wotlk/blob/master/.github/workflows/macos_build.yml#L26-L33

      - name: Cache
        uses: actions/cache@v2
        with: 
          path: ~/Library/Caches/ccache
          key: ccache:${{ matrix.os }}:${{ github.ref }}:${{ github.sha }}
          restore-keys: |
            ccache:${{ matrix.os }}:${{ github.ref }}
            ccache:${{ matrix.os }}

Issue Links

• links to: GitHub Pull Request #11787