Speed up AppVeyor build times

* Examples are no longer built for all images
* Coverage is no longer collected from every build
* The number of configurations is reduced

appveyor.yml

@@ -19,18 +19,51 @@ environment:
 
         - additional_flags: "/D_UNICODE /DUNICODE"
           wmain: 1
+          coverage: 0
+
+        # Have a coverage dimension
+        - additional_flags: ""
+          wmain: 0
+          coverage: 1
+
+        # Have an examples dimension
+        - additional_flags: ""
+          wmain: 0
+          examples: 1
+
 
 matrix:
     exclude:
         - os: Visual Studio 2015
           additional_flags: "/permissive- /std:c++latest"
 
-init:
-  - git config --global core.autocrlf input
+        - os: Visual Studio 2015
+          additional_flags: "/D_UNICODE /DUNICODE"
+
+        # Exclude unwanted coverage configurations
+        - coverage: 1
+          platform: Win32
+
+        - coverage: 1
+          os: Visual Studio 2015
+
+        - coverage: 1
+          configuration: Release
+
+        # Exclude unwanted examples configurations
+        - examples: 1
+          platform: Win32
+
+        - examples: 1
+          os: Visual Studio 2015
+
+        - examples: 1
+          configuration: Release
+
 
 install:
-  - ps: if (($env:CONFIGURATION) -eq "Debug" ) { python -m pip install codecov }
-  - ps: if (($env:CONFIGURATION) -eq "Debug" ) { .\misc\installOpenCppCoverage.ps1 }
+  - ps: if (($env:CONFIGURATION) -eq "Debug" -And ($env:coverage) -eq "1" ) { python -m pip install codecov }
+  - ps: if (($env:CONFIGURATION) -eq "Debug" -And ($env:coverage) -eq "1" ) { .\misc\installOpenCppCoverage.ps1 }
 
 # Win32 and x64 are CMake-compatible solution platform names.
 # This allows us to pass %PLATFORM% to CMake -A.

misc/appveyorBuildConfigurationScript.bat

@@ -1,12 +1,26 @@
-@REM  # In debug build, we want to
-@REM  # 1) Prebuild memcheck redirecter
-@REM  # 2) Regenerate single header include for examples
-@REM  # 3) Enable building examples
+
+@REM  # Possibilities:
+@REM  # Debug build + coverage
+@REM  # Debug build + examples
+@REM  # Debug build +   ---
+@REM  # Release build
 if "%CONFIGURATION%"=="Debug" (
-  python scripts\generateSingleHeader.py
-  cmake -Hmisc -Bbuild-misc -A%PLATFORM%
-  cmake --build build-misc
-  cmake -H. -BBuild -A%PLATFORM% -DUSE_WMAIN=%wmain% -DCATCH_BUILD_EXAMPLES=ON -DMEMORYCHECK_COMMAND=build-misc\Debug\CoverageHelper.exe -DMEMORYCHECK_COMMAND_OPTIONS=--sep-- -DMEMORYCHECK_TYPE=Valgrind
+  if "%coverage%"=="1" (
+    @REM # coverage needs to build the special helper as well as the main
+    cmake -Hmisc -Bbuild-misc -A%PLATFORM%
+    cmake --build build-misc
+    cmake -H. -BBuild -A%PLATFORM% -DUSE_WMAIN=%wmain% -DMEMORYCHECK_COMMAND=build-misc\Debug\CoverageHelper.exe -DMEMORYCHECK_COMMAND_OPTIONS=--sep-- -DMEMORYCHECK_TYPE=Valgrind
+  ) else (
+    @REM # We know that coverage is 0
+    if "%examples%"=="1" (
+      @REM # Examples live off the single header, so it needs to be regenerated
+      python scripts\generateSingleHeader.py
+      cmake -H. -BBuild -A%PLATFORM% -DUSE_WMAIN=%wmain% -DCATCH_BUILD_EXAMPLES=ON
+    ) else (
+      @REM # This is just a plain debug build
+      cmake -H. -BBuild -A%PLATFORM% -DUSE_WMAIN=%wmain%
+    )
+  )
 )
 if "%CONFIGURATION%"=="Release" (
   cmake -H. -BBuild -A%PLATFORM% -DUSE_WMAIN=%wmain%

misc/appveyorTestRunScript.bat

@@ -1,8 +1,12 @@
 cd Build
 if "%CONFIGURATION%"=="Debug" (
-  ctest -j 2 -C %CONFIGURATION% -D ExperimentalMemCheck
-  python ..\misc\appveyorMergeCoverageScript.py
-  codecov --root .. --no-color --disable gcov -f cobertura.xml -t %CODECOV_TOKEN%
+  if "%coverage%"=="1" (
+    ctest -j 2 -C %CONFIGURATION% -D ExperimentalMemCheck
+    python ..\misc\appveyorMergeCoverageScript.py
+    codecov --root .. --no-color --disable gcov -f cobertura.xml -t %CODECOV_TOKEN%
+  ) else (
+    ctest -j 2 -C %CONFIGURATION%
+  )
 )
 if "%CONFIGURATION%"=="Release" (
   ctest -j 2 -C %CONFIGURATION%

misc/installOpenCppCoverage.ps1

@@ -1,5 +1,5 @@
 # Downloads are done from the oficial github release page links
-$downloadUrl = "https://github.com/OpenCppCoverage/OpenCppCoverage/releases/download/release-0.9.6.1/OpenCppCoverageSetup-x64-0.9.6.1.exe"
+$downloadUrl = "https://github.com/OpenCppCoverage/OpenCppCoverage/releases/download/release-0.9.7.0/OpenCppCoverageSetup-x64-0.9.7.0.exe"
 $installerPath = [System.IO.Path]::Combine($Env:USERPROFILE, "Downloads", "OpenCppCoverageSetup.exe")
 
 if(-Not (Test-Path $installerPath)) {