use the default CMAKE_PLATFORM generator on make windows; switch to Ninja make make windows and cmake windows python github actions

.github/workflows/cmake_windows_python.yml

@@ -11,6 +11,7 @@ jobs:
     - uses: actions/setup-python@v2
       with:
         python-version: '3.9'
+    - uses: seanmiddleditch/gha-setup-ninja@master
     - name: Install python3
       run: python3 -m pip install --user mypy-protobuf absl-py setuptools wheel numpy pandas
     - name: Install SWIG 4.0.2
@@ -25,7 +26,7 @@ jobs:
     - name: Check cmake
       run: cmake --version
     - name: Configure
-      run: cmake -S. -Bbuild -G "Visual Studio 17 2022" -DCMAKE_BUILD_TYPE=Release -DBUILD_PYTHON=ON -DBUILD_CXX_SAMPLES=OFF -DBUILD_CXX_EXAMPLES=OFF
+      run: cmake -S. -Bbuild -G Ninja -DCMAKE_BUILD_TYPE=Release -DBUILD_PYTHON=ON -DBUILD_CXX_SAMPLES=OFF -DBUILD_CXX_EXAMPLES=OFF
     - name: Build
       run: cmake --build build --config Release --target ALL_BUILD -v -- /maxcpucount
     - name: Test

.github/workflows/make_windows_cpp.yml

@@ -9,14 +9,15 @@ jobs:
     steps:
     - uses: actions/checkout@v2
     - uses: ilammy/msvc-dev-cmd@v1
+    - uses: seanmiddleditch/gha-setup-ninja@master
     - name: Check make
       run: tools\make --version
     - name: Check system
       run: tools\make detect_port
     - name: Build third party
-      run: tools\make third_party BUILD_PYTHON=OFF BUILD_JAVA=OFF BUILD_DOTNET=OFF
+      run: tools\make third_party BUILD_PYTHON=OFF BUILD_JAVA=OFF BUILD_DOTNET=OFF GENERATOR=Ninja
     - name: Build C++
-      run: tools\make compile_libraries -j4
+      run: tools\make all JOBS=4
     - name: Test C++
       run: tools\make test_cc
     - name: Install

.github/workflows/make_windows_dotnet.yml

@@ -9,6 +9,7 @@ jobs:
     steps:
     - uses: actions/checkout@v2
     - uses: ilammy/msvc-dev-cmd@v1
+    - uses: seanmiddleditch/gha-setup-ninja@master
       # Install .NET SDKs
     - name: Setup .NET Core 3.1
       uses: actions/setup-dotnet@v1
@@ -29,7 +30,7 @@ jobs:
     - name: Build third party
       run: tools\make third_party BUILD_PYTHON=OFF BUILD_JAVA=OFF BUILD_DOTNET=ON
     - name: Build C++ and .NET
-      run: tools\make compile_libraries -j4
+      run: tools\make all JOBS=4
     - name: Test .Net
       run: tools\make test_dotnet -j4
     - name: Create nuget packages

.github/workflows/make_windows_java.yml

@@ -9,6 +9,7 @@ jobs:
     steps:
     - uses: actions/checkout@v2
     - uses: ilammy/msvc-dev-cmd@v1
+    - uses: seanmiddleditch/gha-setup-ninja@master
     - name: Check java
       run: java -version
     - name: Check make
@@ -20,7 +21,7 @@ jobs:
     - name: Build third party
       run: tools\make third_party BUILD_PYTHON=OFF BUILD_JAVA=ON BUILD_DOTNET=OFF
     - name: Build C++ and Java
-      run: tools\make compile_libraries -j4
+      run: tools\make all JOBS=4
     - name: Test Java
       run: tools\make test_java -j4
     - name: Create maven package

.github/workflows/make_windows_python.yml

@@ -10,8 +10,9 @@ jobs:
     - uses: actions/checkout@v2
     - uses: ilammy/msvc-dev-cmd@v1
     - uses: actions/setup-python@v2
+    - uses: seanmiddleditch/gha-setup-ninja@master
       with:
-        python-version: '3.9'
+        python-version: '3.9'    
     - name: Install python3
       run: python3 -m pip install --user mypy-protobuf absl-py setuptools wheel numpy pandas
     - name: Check make
@@ -21,9 +22,9 @@ jobs:
     - name: Check Python
       run: tools\make detect_python
     - name: Build third party
-      run: tools\make third_party BUILD_PYTHON=ON BUILD_JAVA=OFF BUILD_DOTNET=OFF
+      run: tools\make third_party BUILD_PYTHON=ON BUILD_JAVA=OFF BUILD_DOTNET=OFF GENERATOR=Ninja
     - name: Build C++ and Python
-      run: tools\make compile_libraries -j4
+      run: tools\make all JOBS=4
     - name: Build Python
       run: tools\make python -j4
     - name: Test Python

makefiles/Makefile.third_party.win.mk

@@ -24,7 +24,7 @@ dependencies:
 third_party: dependencies/ortools.sln | dependencies
 
 THIRD_PARTY_TARGET = dependencies/ortools.sln
-GENERATOR ?= "MMake Makefiles"
+GENERATOR ?= $(CMAKE_PLATFORM)
 
 dependencies/ortools.sln: | dependencies
 	cmake -S . -B dependencies -DBUILD_DEPS=ON \