add windows c# ci job

fix #4184

Author: vigsterkr

.ci/ci.yml

@@ -165,3 +165,33 @@ jobs:
 
   steps:
   - template: ./windows-steps.yml
+
+- job: windows_swig
+  displayName: Windows SWIG Interface
+  dependsOn: windows_libshogun
+  timeoutInMinutes: 120
+
+  pool:
+    vmImage: 'vs2017-win2016'
+
+  strategy:
+    matrix:
+      csharp:
+        cmakeOptions: '$(commonSWIGCMakeFlags) -DINTERFACE_CSHARP=ON'
+        interfaceName: 'csharp'
+
+  variables:
+    targetPrefix: '$(Build.BinariesDirectory)\\opt'
+    libshogunArtifactName: 'libshogun-vs17'
+    libshogunArchive: '$(Build.ArtifactStagingDirectory)/libshogun-$(Build.BuildId).tar.gz'
+    commonSWIGCMakeFlags: '-DLIBSHOGUN=OFF -DDISABLE_UNIT_TESTS=ON -DDISABLE_META_CPP=ON'
+    clcacheDir: 'C:\\Users\\VssAdministrator\\clcache'
+    clcacheArtifactName: 'clcache-$(interfaceName)'
+    clcacheArchive: '$(Build.ArtifactStagingDirectory)/clcache-$(Build.BuildId).tar.gz'
+    buildConfiguration: Release
+    buildPlatform: x64
+
+  steps:
+  - template: ./windows-steps.yml
+    parameters:
+      swig: true

.ci/windows-steps.yml

@@ -45,7 +45,7 @@ steps:
   displayName: 'Build ($(buildConfiguration) $(buildPlatform))'
   workingDirectory: $(Build.SourcesDirectory)\build
 
-- script: ctest -j 2
+- script: ctest --output-on-failure -j 2
   displayName: Test
   workingDirectory: $(Build.SourcesDirectory)\build
 

cmake/FindCSharp.cmake

@@ -64,7 +64,7 @@ endif( )
 
 
 FIND_PACKAGE_HANDLE_STANDARD_ARGS(CSharp FOUND_VAR CSHARP_FOUND
-                                  REQUIRED_VARS CSHARP_TYPE CSHARP_COMPILER CSHARP_INTERPRETER
+                                  REQUIRED_VARS CSHARP_TYPE CSHARP_COMPILER
                                   VERSION_VAR CSHARP_VERSION)
 
 mark_as_advanced( CSHARP_TYPE CSHARP_VERSION CSHARP_COMPILER CSHARP_INTERPRETER CSHARP_PLATFORM CSHARP_SDK )

src/interfaces/csharp/CMakeLists.txt

@@ -7,7 +7,7 @@ GENERATE_INTERFACE_TARGET(csharp ${CMAKE_CURRENT_SOURCE_DIR} "")
 
 ADD_CUSTOM_COMMAND(TARGET interface_csharp
 				   POST_BUILD
-				   COMMAND "${CSHARP_COMPILER}" /t:library *.cs /out:shogun.dll
+				   COMMAND "${CSHARP_COMPILER}" /t:library /out:shogun.dll *.cs
 				   COMMENT "Creating shogun.dll")
 IF(NOT CSHARP_INSTALL_DIR)
 	SET(CSHARP_INSTALL_DIR "lib/cli/shogun")