Make _CRT_SECURE_NO_WARNINGS a global definition. Introduce mechanism to disable warnings.

CMake/Warnings.cmake

@@ -17,4 +17,30 @@ if (ENABLE_ALL_WARNINGS)
       add_compile_options (-Wall)
     endif ()
   endif ()
-endif ()
+endif ()
+
+macro (carla_try_suppress_cxx_warning NAME FLAG)
+  check_cxx_compiler_flag (
+    -Wno-${FLAG}
+    HAS_${NAME}
+  )
+  if (HAS_${NAME})
+    add_compile_options (
+      $<$<COMPILE_LANGUAGE:CXX>:-Wno-${FLAG}>
+    )
+  endif ()
+endmacro ()
+
+set (
+  CARLA_SUPRESSED_WARNING_LIST
+  macro-redefined
+  incompatible-pointer-types
+)
+
+foreach (WARNING ${CARLA_SUPRESSED_WARNING_LIST})
+  string (MAKE_C_IDENTIFIER "${WARNING}" WARNING_NAME)
+  carla_try_suppress_cxx_warning (
+    ${WARNING_NAME}
+    ${WARNING}
+  )
+endforeach ()

CMakeLists.txt

@@ -106,9 +106,12 @@ set (
 )
 
 if (WIN32)
-    # https://learn.microsoft.com/en-us/cpp/porting/modifying-winver-and-win32-winnt?view=msvc-170
+  add_compile_definitions (_CRT_SECURE_NO_WARNINGS)
+endif ()
+
+if (WIN32)
+  # https://learn.microsoft.com/en-us/cpp/porting/modifying-winver-and-win32-winnt?view=msvc-170
   list (APPEND CARLA_COMMON_DEFINITIONS _WIN32_WINNT=0x0601) # --- Windows 10 ---
-  list (APPEND CARLA_COMMON_DEFINITIONS _CRT_SECURE_NO_WARNINGS)
   list (APPEND CARLA_COMMON_DEFINITIONS HAVE_SNPRINTF)
   list (APPEND CARLA_COMMON_DEFINITIONS _USE_MATH_DEFINES)
 endif ()