Check single-header using test examples

This means that examples build for all matrix entries

appveyor.yml

@@ -20,24 +20,11 @@ environment:
         - additional_flags: "/D_UNICODE /DUNICODE"
           wmain: 1
 
-        - additional_flags: ""
-          wmain: 0
-          env_build_examples: 1
-          env_no_selftest: 1
-
 matrix:
     exclude:
         - os: Visual Studio 2015
           additional_flags: "/permissive- /std:c++latest"
 
-        - os: Visual Studio 2015
-          env_build_examples: 1
-          env_no_selftest: 1
-
-        - configuration: Debug
-          env_build_examples: 1
-          env_no_selftest: 1
-
 init:
   - git config --global core.autocrlf input
   # Set build version to git commit-hash
@@ -59,8 +46,9 @@ configuration:
 
 #Cmake will autodetect the compiler, but we set the arch
 before_build:
+  - python scripts/generateSingleHeader.py
   - set CXXFLAGS=%additional_flags%
-  - cmake -H. -BBuild -A%PLATFORM% -DUSE_WMAIN=%wmain% -DNO_SELFTEST=%env_no_selftest% -DBUILD_EXAMPLES=%env_build_examples%
+  - cmake -H. -BBuild -A%PLATFORM% -DUSE_WMAIN=%wmain% -DBUILD_EXAMPLES=ON
 
 # build with MSBuild
 build: