CMake build system

cmake/utils/disable_warnings.cmake

@@ -0,0 +1,17 @@
+include_guard(GLOBAL)
+
+function(disable_warnings)
+    set(SOURCES ${ARGN})
+
+    foreach(FILE IN LISTS SOURCES)
+        if(MSVC)
+            # Annoyingly if you disable all warnings (/w) in combination with enabling
+            # some warnings, which we and/or CMake inevitably do, this causes a
+            # meta-warning D9025, so instead we have to individually disable them:
+            set_source_files_properties(${FILE} PROPERTIES COMPILE_FLAGS
+                "/wd4131 /wd4245 /wd4100 /wd4127 /wd4244 /wd4310 /wd4457 /wd4456 /wd4701 /wd4305 /wd4189 /wd4232")
+        else()
+            set_source_files_properties(${FILE} PROPERTIES COMPILE_FLAGS -w)
+        endif()
+    endforeach()
+endfunction()