fix: Check HAVE_STDINT_H or HAVE_INTTYPES_H for older MSVC versions

CMakeLists.txt

@@ -224,12 +224,22 @@ endif ()
 
 if (MSVC)
   set (HAVE_SYS_TYPES_H 1)
-  set (HAVE_STDINT_H    1)
   set (HAVE_STDDEF_H    1) # used by CheckTypeSize module
-  set (HAVE_INTTYPES_H  0)
   set (HAVE_UNISTD_H    0)
   set (HAVE_SYS_STAT_H  1)
   set (HAVE_SHLWAPI_H   1)
+  if (MSVC_VERSION VERSION_LESS 1600)
+    check_include_file_cxx ("stdint.h" HAVE_STDINT_H)
+    bool_to_int (HAVE_STDINT_H)  # used in #if directive
+  else ()
+    set (HAVE_STDINT_H 1)
+  endif ()
+  if (MSVC_VERSION VERSION_LESS 1800)
+    check_include_file_cxx ("inttypes.h" HAVE_INTTYPES_H)
+    bool_to_int (HAVE_INTTYPES_H)  # used in #if directive
+  else ()
+    set (HAVE_INTTYPES_H 1)
+  endif ()
 else ()
   foreach (fname IN ITEMS unistd stdint inttypes sys/types sys/stat fnmatch)
     string (TOUPPER "${fname}" FNAME)
@@ -238,13 +248,13 @@ else ()
       check_include_file_cxx ("${fname}.h" HAVE_${FNAME}_H)
     endif ()
   endforeach ()
+  if (NOT HAVE_FNMATCH_H AND OS_WINDOWS)
+    check_include_file_cxx ("shlwapi.h" HAVE_SHLWAPI_H)
+  endif ()
   # the following are used in #if directives not #ifdef
   bool_to_int (HAVE_STDINT_H)
   bool_to_int (HAVE_SYS_TYPES_H)
   bool_to_int (HAVE_INTTYPES_H)
-  if (NOT HAVE_FNMATCH_H AND OS_WINDOWS)
-    check_include_file_cxx ("shlwapi.h" HAVE_SHLWAPI_H)
-  endif ()
 endif ()
 
 gflags_define (STRING INTTYPES_FORMAT "Format of integer types: \"C99\" (uint32_t), \"BSD\" (u_int32_t), \"VC7\" (__int32)" "")