[PATCH 3/3] gitlab-ci-edk2.yml: Use ccache

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

By using ccache we reduce the job duration from
40 minutes 26 seconds to 32 minutes 6 seconds.

  Running after script...
  $ ccache --show-stats
  cache hit (direct)                  6604
  files in cache                     12090
  cache size                         335.5 MB

For now downloading this cache takes 16 seconds, archiving
it 44 seconds.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 .gitlab-ci-edk2.yml | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/.gitlab-ci-edk2.yml b/.gitlab-ci-edk2.yml
index abfaf52874..329ba24f20 100644
--- a/.gitlab-ci-edk2.yml
+++ b/.gitlab-ci-edk2.yml
@@ -14,12 +14,19 @@ build-edk2:
    - edk2-stdout.log
    - edk2-stderr.log
  image: ubuntu:16.04 # Use Ubuntu Xenial
+ variables:
+   CCACHE_DIR: ${CI_PROJECT_DIR}/.ccache
+ cache: # Use the same cache for all EDK2 jobs
+   key: ubuntu16.04-edk2-ccache
+   paths:
+   - ${CCACHE_DIR}
  before_script: # Install packages requiered to build EDK2
  - apt-get update --quiet --quiet
  - DEBIAN_FRONTEND=noninteractive
    apt-get install --assume-yes --no-install-recommends --quiet --quiet
      build-essential
      ca-certificates
+     ccache
      dos2unix
      gcc-aarch64-linux-gnu
      gcc-arm-linux-gnueabi
@@ -29,9 +36,13 @@ build-edk2:
      nasm
      python
      uuid-dev
+ - export PATH=/usr/lib/ccache:$PATH
+ - ccache --zero-stats
  script: # Clone the required submodules and build EDK2
  - git submodule update --init roms/edk2
  - git -C roms/edk2 submodule update --init
  - export JOBS=$(($(getconf _NPROCESSORS_ONLN) + 1))
  - echo "=== Using ${JOBS} simultaneous jobs ==="
  - make -j${JOBS} -C roms efi 1>edk2-stdout.log 2> >(tee -a edk2-stderr.log >&2)
+ after_script:
+ - ccache --show-stats
-- 
2.21.1