VS12: Add Visual Studio 12 generator (#14251)

Copy cmGlobalVisualStudio11Generator to cmGlobalVisualStudio12Generator
and update version numbers accordingly.  Add the VS12 enumeration value.
Add module CMakeVS12FindMake to find MSBuild.  Look for MSBuild in its
now-dedicated Windows Registry entry.  Teach the platform module
Windows-MSVC to set MSVC12 and document the variable.  Teach module
InstallRequiredSystemLibraries to look for the VS 12 runtime libraries.

Teach tests CheckCompilerRelatedVariables, Preprocess, VSExternalInclude,
and RunCMake.GeneratorToolset to treat VS 12 as they do VS 10 and 11.

Inspired-by: Minmin Gong <minmin.gong@gmail.com>

4 files changed, 12 insertions, 4 deletions

diff --git a/Tests/CheckCompilerRelatedVariables/CMakeLists.txt b/Tests/CheckCompilerRelatedVariables/CMakeLists.txt
index 20001e6..69cfdb8 100644
--- a/Tests/CheckCompilerRelatedVariables/CMakeLists.txt
+++ b/Tests/CheckCompilerRelatedVariables/CMakeLists.txt
@@ -37,6 +37,9 @@ endif()
 if(DEFINED MSVC11)
   math(EXPR msvc_total "${msvc_total} + 1")
 endif()
+if(DEFINED MSVC12)
+  math(EXPR msvc_total "${msvc_total} + 1")
+endif()
 
 echo_var(MSVC)
 echo_var(MSVC60)
@@ -46,6 +49,7 @@ echo_var(MSVC80)
 echo_var(MSVC90)
 echo_var(MSVC10)
 echo_var(MSVC11)
+echo_var(MSVC12)
 echo_var(MSVC_IDE)
 
 if(MSVC)
diff --git a/Tests/Preprocess/CMakeLists.txt b/Tests/Preprocess/CMakeLists.txt
index 78746e7..ad119cc 100644
--- a/Tests/Preprocess/CMakeLists.txt
+++ b/Tests/Preprocess/CMakeLists.txt
@@ -40,6 +40,9 @@ endif()
 if("${CMAKE_GENERATOR}" MATCHES "Visual Studio 11")
   set(PP_VS110 1)
 endif()
+if("${CMAKE_GENERATOR}" MATCHES "Visual Studio 12")
+  set(PP_VS120 1)
+endif()
 
 # Some tests below check the PP_* variables set above.  They are meant
 # to test the case that the build tool is at fault.  Other tests below
@@ -55,7 +58,8 @@ endif()
 # must not have it escaped inside the configured header.
 set(STRING_EXTRA "")
 
-if(NOT BORLAND AND NOT PP_VS70 AND NOT PP_VS100 AND NOT PP_VS110)
+if(NOT BORLAND AND NOT PP_VS70
+    AND NOT PP_VS100 AND NOT PP_VS110 AND NOT PP_VS120)
   # Borland, VS70 IDE: ;
   # The Borland compiler will simply not accept a non-escaped semicolon
   # on the command line.  If it is escaped \; then the escape character
diff --git a/Tests/RunCMake/GeneratorToolset/RunCMakeTest.cmake b/Tests/RunCMake/GeneratorToolset/RunCMakeTest.cmake
index 09375d9..1ccc1ad 100644
--- a/Tests/RunCMake/GeneratorToolset/RunCMakeTest.cmake
+++ b/Tests/RunCMake/GeneratorToolset/RunCMakeTest.cmake
@@ -3,7 +3,7 @@ include(RunCMake)
 set(RunCMake_GENERATOR_TOOLSET "")
 run_cmake(NoToolset)
 
-if("${RunCMake_GENERATOR}" MATCHES "Visual Studio 1[01]|Xcode" AND NOT XCODE_BELOW_3)
+if("${RunCMake_GENERATOR}" MATCHES "Visual Studio 1[012]|Xcode" AND NOT XCODE_BELOW_3)
   set(RunCMake_GENERATOR_TOOLSET "Test Toolset")
   run_cmake(TestToolset)
 else()
diff --git a/Tests/VSExternalInclude/CMakeLists.txt b/Tests/VSExternalInclude/CMakeLists.txt
index 5ce15e0..8fc2871 100644
--- a/Tests/VSExternalInclude/CMakeLists.txt
+++ b/Tests/VSExternalInclude/CMakeLists.txt
@@ -6,7 +6,7 @@ if(${CMAKE_GENERATOR} MATCHES "Visual Studio 6")
 else()
   set(PROJECT_EXT vcproj)
 endif()
-if(${CMAKE_GENERATOR} MATCHES "Visual Studio 1[01]")
+if(${CMAKE_GENERATOR} MATCHES "Visual Studio 1[012]")
   set(PROJECT_EXT vcxproj)
 endif()
 
@@ -54,7 +54,7 @@ add_dependencies(VSExternalInclude lib2)
 # and the sln file can no longer be the only source
 # of that depend.  So, for VS 10 make the executable
 # depend on lib1 and lib2
-if(${CMAKE_GENERATOR} MATCHES "Visual Studio 1[01]")
+if(${CMAKE_GENERATOR} MATCHES "Visual Studio 1[012]")
   add_dependencies(VSExternalInclude lib1)
 endif()