Enable ninja and ccache on travis (#413)

* Use ninja, the fast build system

Make is known to be rather slow, but it's possible to generate other
build system files with CMake, so use a faster one.

* Use ccache on Travis

* Dummy commit to test ccache

.travis.yml

@@ -1,5 +1,7 @@
 language: cpp
 
+cache: ccache
+
 matrix:
   include:
     - env: NAME="Linux Build"
@@ -12,6 +14,7 @@ matrix:
           packages:
             - gcc-7
             - g++-7
+            - ninja-build
       install: ./.travis/build-x86_64-linux/deps.sh
       script: ./.travis/build-x86_64-linux/build.sh
     - env: NAME="Test - Fuzz against Unicorn"
@@ -25,6 +28,7 @@ matrix:
             - gcc-7
             - g++-7
             - llvm-dev
+            - ninja-build
       install: ./.travis/test-a64-on-x86_64-linux/deps.sh
       script: ./.travis/test-a64-on-x86_64-linux/build.sh
     - env: NAME="Test - SSE3 only"
@@ -38,6 +42,7 @@ matrix:
             - gcc-7
             - g++-7
             - llvm-dev
+            - ninja-build
       install: ./.travis/sse3-only-on-x86_64-linux/deps.sh
       script: ./.travis/sse3-only-on-x86_64-linux/build.sh
     - env: NAME="macOS Build"

.travis/build-x86_64-linux/build.sh

@@ -8,7 +8,7 @@ export CXX=g++-7
 export PKG_CONFIG_PATH=$HOME/.local/lib/pkgconfig:$PKG_CONFIG_PATH
 
 mkdir build && cd build
-cmake .. -DBoost_INCLUDE_DIRS=${PWD}/../externals/ext-boost -DCMAKE_BUILD_TYPE=Release
-make -j4
+cmake .. -DBoost_INCLUDE_DIRS=${PWD}/../externals/ext-boost -DCMAKE_BUILD_TYPE=Release -G Ninja
+ninja
 
 ./tests/dynarmic_tests --durations yes

.travis/sse3-only-on-x86_64-linux/build.sh

@@ -9,7 +9,7 @@ export PKG_CONFIG_PATH=$HOME/.local/lib/pkgconfig:$PKG_CONFIG_PATH
 export UNICORNDIR=$(pwd)/externals/unicorn
 
 mkdir build && cd build
-cmake .. -DBoost_INCLUDE_DIRS=${PWD}/../externals/ext-boost -DCMAKE_BUILD_TYPE=Release -DDYNARMIC_USE_LLVM=1 -DDYNARMIC_TESTS_USE_UNICORN=1 -DDYNARMIC_ENABLE_CPU_FEATURE_DETECTION=0
-make -j4
+cmake .. -DBoost_INCLUDE_DIRS=${PWD}/../externals/ext-boost -DCMAKE_BUILD_TYPE=Release -DDYNARMIC_USE_LLVM=1 -DDYNARMIC_TESTS_USE_UNICORN=1 -DDYNARMIC_ENABLE_CPU_FEATURE_DETECTION=0 -G Ninja
+ninja
 
 ./tests/dynarmic_tests --durations yes

.travis/test-a64-on-x86_64-linux/build.sh

@@ -9,7 +9,7 @@ export PKG_CONFIG_PATH=$HOME/.local/lib/pkgconfig:$PKG_CONFIG_PATH
 export UNICORNDIR=$(pwd)/externals/unicorn
 
 mkdir build && cd build
-cmake .. -DBoost_INCLUDE_DIRS=${PWD}/../externals/ext-boost -DCMAKE_BUILD_TYPE=Release -DDYNARMIC_USE_LLVM=1 -DDYNARMIC_TESTS_USE_UNICORN=1
-make -j4
+cmake .. -DBoost_INCLUDE_DIRS=${PWD}/../externals/ext-boost -DCMAKE_BUILD_TYPE=Release -DDYNARMIC_USE_LLVM=1 -DDYNARMIC_TESTS_USE_UNICORN=1 -G Ninja
+ninja
 
 ./tests/dynarmic_tests --durations yes