Windows, compiling . various cleanups, use /Zi instead of /Z7

cmake/os/Windows.cmake

@@ -107,6 +107,7 @@ IF(MSVC)
   SET(DYNAMIC_UCRT_LINKER_OPTION " /NODEFAULTLIB:libucrt.lib /DEFAULTLIB:ucrt.lib")
 
   IF(WITH_ASAN)
+    SET(MSVC_CRT_TYPE /MD CACHE STRING FORCE)
     ENABLE_ASAN()
   ENDIF()
 
@@ -119,19 +120,11 @@ IF(MSVC)
      "${CMAKE_${type}_LINKER_FLAGS_MINSIZEREL} /debug")
   ENDFOREACH()
   
-  # Force static runtime libraries
-  # - Choose debugging information:
-  #     /Z7
-  #     Produces an .obj file containing full symbolic debugging
-  #     information for use with the debugger. The symbolic debugging
-  #     information includes the names and types of variables, as well as
-  #     functions and line numbers. No .pdb file is produced by the compiler.
-  #
-  # - Remove preprocessor flag _DEBUG that older cmakes use with Config=Debug,
-  #   it is as defined by Debug runtimes itself (/MTd /MDd)
+  # Force runtime libraries
+  # Compile with /Zi to get debugging information
 
   FOREACH(lang C CXX)
-    SET(CMAKE_${lang}_FLAGS_RELEASE "${CMAKE_${lang}_FLAGS_RELEASE} /Z7")
+    SET(CMAKE_${lang}_FLAGS_RELEASE "${CMAKE_${lang}_FLAGS_RELEASE} /Zi")
   ENDFOREACH()
   FOREACH(flag 
    CMAKE_C_FLAGS_RELEASE    CMAKE_C_FLAGS_RELWITHDEBINFO 
@@ -141,10 +134,8 @@ IF(MSVC)
    CMAKE_C_FLAGS_MINSIZEREL  CMAKE_CXX_FLAGS_MINSIZEREL
    )
    STRING(REGEX REPLACE "/M[TD][d]?"  "${MSVC_CRT_TYPE}" "${flag}"  "${${flag}}" )
-   STRING(REGEX REPLACE "/D[ ]?_DEBUG"  "" "${flag}" "${${flag}}")
-   STRING(REPLACE "/Zi"  "/Z7" "${flag}" "${${flag}}")
-   IF(NOT "${${flag}}" MATCHES "/Z7")
-    STRING(APPEND ${flag} " /Z7")
+   IF(NOT "${${flag}}" MATCHES "/Zi")
+    STRING(APPEND ${flag} " /Zi")
    ENDIF()
   ENDFOREACH()
 
@@ -157,7 +148,6 @@ IF(MSVC)
     SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CLANG_CL_FLAGS}")
   ENDIF()
 
-  # Fix CMake's predefined huge stack size
   FOREACH(type EXE SHARED MODULE)
    STRING(REGEX REPLACE "/STACK:([^ ]+)" "" CMAKE_${type}_LINKER_FLAGS "${CMAKE_${type}_LINKER_FLAGS}")
    STRING(REGEX REPLACE "/INCREMENTAL:([^ ]+)" "/INCREMENTAL:NO" CMAKE_${type}_LINKER_FLAGS_RELWITHDEBINFO "${CMAKE_${type}_LINKER_FLAGS_RELWITHDEBINFO}")
@@ -180,7 +170,7 @@ IF(MSVC)
   ENDIF()
   
   # Speed up multiprocessor build
-  IF (MSVC_VERSION GREATER 1400 AND (NOT CMAKE_CXX_COMPILER_ID MATCHES Clang))
+  IF (NOT CMAKE_CXX_COMPILER_ID MATCHES Clang)
     SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /MP")
     SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP")
   ENDIF()