Travis CI: stop requiring sudo and use make instead of ninja

This gives us shorter testing time since we can use the container
based testing environment, which starts faster. Also using make
means we don't need to install ninja separately.

diff --git a/.travis.yml b/.travis.yml
index 848ee47..bf677c0 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,7 +8,7 @@ os:
 
 # Use Ubuntu 14.04 LTS (Trusty) as the Linux testing environment.
 dist: trusty
-sudo: required
+sudo: false
 
 # Use the default Xcode environment for Xcode.
 
@@ -35,18 +35,14 @@ matrix:
 cache:
   apt: true
 
+git:
+  depth: 1
+
 branches:
   only:
     - master
 
-addons:
-  apt:
-    packages:
-      - ninja-build
-
 before_install:
-  # Install cmake & ninja on macOS.
-  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew install ninja; fi
   - if [[ "$BUILD_NDK" == "ON" ]]; then
       git clone --depth=1 https://github.com/urho3d/android-ndk.git $HOME/android-ndk;
       export ANDROID_NDK=$HOME/android-ndk;
@@ -65,12 +61,13 @@ script:
             -DANDROID_NATIVE_API_LEVEL=android-9
             -DCMAKE_BUILD_TYPE=Release
             -DANDROID_ABI="armeabi-v7a with NEON"
-            -DSPIRV_SKIP_TESTS=ON
-            -GNinja ..;
+            -DSPIRV_SKIP_TESTS=ON ..;
     else
-      cmake -GNinja -DCMAKE_BUILD_TYPE=${BUILD_TYPE} ..;
+      cmake -DCMAKE_BUILD_TYPE=${BUILD_TYPE} ..;
     fi
-  - ninja
+  # Due to the limitation of Travis platform, we cannot start too many concurrent jobs.
+  # Otherwise GCC will panic with internal error, possibility because of memory issues.
+  - make -j4
   - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then
       export NPROC=`nproc`;
     else