build: use ninja on appveyor (#819)

CMakeLists.txt

@@ -1,5 +1,8 @@
 cmake_minimum_required(VERSION 3.1)
 
+if (WIN32 AND (CMAKE_GENERATOR STREQUAL "Ninja"))
+	set(CMAKE_CONFIGURATION_TYPES ${CMAKE_BUILD_TYPE})
+endif()
 set(BUILD_CXX_LANGUAGE_PACKAGE OFF CACHE BOOL "Add C and C++ support to the Sourcetrail indexer.")
 set(BUILD_JAVA_LANGUAGE_PACKAGE OFF CACHE BOOL "Add Java support to the Sourcetrail indexer.")
 set(BUILD_PYTHON_LANGUAGE_PACKAGE OFF CACHE BOOL "Add Python support to the Sourcetrail indexer.")

appveyor.yml

@@ -1,6 +1,15 @@
 version: 0.0.0.{build}
 image: Visual Studio 2017
 
+install:
+  ############################################################################
+  # Install Ninja
+  ############################################################################
+  - set NINJA_URL="https://github.com/ninja-build/ninja/releases/download/v1.9.0/ninja-win.zip"
+  - appveyor DownloadFile %NINJA_URL% -FileName ninja.zip
+  - 7z x ninja.zip -oC:\projects\deps\ninja > nul
+  - set PATH=C:\projects\deps\ninja;%PATH%
+  - ninja --version
 
 before_build:
     - choco install winrar -y
@@ -15,15 +24,15 @@ before_build:
     - cd build
     - mkdir win64
     - cd win64
-    - cmake -G "Visual Studio 15 Win64" -DBOOST_ROOT=C:/Libraries/boost_1_69_0 -DQt5_DIR=C:/Qt/5.12.5/msvc2017_64/lib/cmake/Qt5 -DBUILD_PYTHON_LANGUAGE_PACKAGE=ON ../../
+    - call "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Auxiliary\Build\vcvarsall.bat" amd64
+    - cmake -G "Ninja" -DBOOST_ROOT=C:/Libraries/boost_1_69_0 -DQt5_DIR=C:/Qt/5.12.5/msvc2017_64/lib/cmake/Qt5 -DBUILD_PYTHON_LANGUAGE_PACKAGE=ON -DCMAKE_BUILD_TYPE=Release ../../
     - cd ../../
 
 build_script:
     - cd build/win64
-    - msbuild /p:configuration=Release /v:m ALL_BUILD.vcxproj
+    - ninja
     - cd ../../
 
-
 test_script:
     - cd bin/test
     - ..\..\build\win64\Release\test\Sourcetrail_test.exe