Travis: Fix ccache on debug builds (#4741)

.travis.yml

@@ -13,42 +13,42 @@ addons:
     confinement: classic
     channel: latest
 
-matrix:
+jobs:
   include:
-    # AppleClang Release
     # OSX workers are slower to start up.  Having these first in the build matrix makes travis faster overall.
-    - os: osx
+    - name: "AppleClang - Release"
+      os: osx
       osx_image: xcode11.3
       before_install:
         - HOMEBREW_NO_AUTO_UPDATE=1 brew install ccache
       env: &Release
         - TRAVIS_CUBERITE_BUILD_TYPE=RELEASE
 
-    # AppleClang Debug
-    - os: osx
+    - name: "AppleClang - Debug"
+      os: osx
       osx_image: xcode11.3
       before_install:
         - HOMEBREW_NO_AUTO_UPDATE=1 brew install ccache
       env: &Debug
         - TRAVIS_CUBERITE_BUILD_TYPE=DEBUG
 
-    # Clang 7.0 - Release
-    - compiler: clang
+    - name: "Clang 7.0 - Release"
+      compiler: clang
       before_install: &use-cmake
         - export PATH=/snap/bin/:${PATH}
       env: *Release
 
-    # Clang 7.0 - Debug
-    - compiler: clang
+    - name: "Clang 7.0 - Debug"
+      compiler: clang
       before_install: *use-cmake
       env: *Debug
 
-    # GCC 7.4 - Release, CMake 3.12
-    - compiler: gcc
+    - name: "GCC 7.4 - Release, CMake 3.12"
+      compiler: gcc
       env: *Release
 
-    # GCC 7.4 - Debug
-    - compiler: gcc
+    - name: "GCC 7.4 - Debug"
+      compiler: gcc
       before_install: *use-cmake
       env: *Debug
 

travisbuild.sh

@@ -11,16 +11,24 @@ if [ `which ccache` ]; then
 	export CCACHE_CPP2=true
 	CACHE_ARGS="-DCMAKE_C_COMPILER_LAUNCHER=ccache -DCMAKE_CXX_COMPILER_LAUNCHER=ccache"
 	echo "Using ccache installed at $(which ccache)"
+	ccache --max-size=3G
+	ccache -z # Zero statistics
 fi
 
 cmake . -DBUILD_TOOLS=1 -DSELF_TEST=1 ${CACHE_ARGS};
 
 echo "Building..."
-cmake --build . -- -j 2;
-ctest -j 2 -V;
+cmake --build . -j 2
+
+if [ `which ccache` ]; then
+		echo "Built with ccache, outputting cache stats..."
+		ccache -s
+fi
 
 echo "Testing..."
 
+ctest -j 2 -V;
+
 cd Server/;
 touch apiCheckFailed.flag
 if [ "$TRAVIS_CUBERITE_BUILD_TYPE" != "COVERAGE" ]; then