Use alternative warning suppression

CMakeLists.txt

@@ -219,6 +219,7 @@ if (MINGW)
   target_compile_definitions(lego1 PRIVATE DIRECTINPUT_VERSION=0x0500)
 endif()
 
+
 # Additional include directories
 target_include_directories(lego1 PUBLIC "${CMAKE_SOURCE_DIR}/3rdparty/vec")
 target_include_directories(lego1 PRIVATE "${CMAKE_SOURCE_DIR}/3rdparty/flic")
@@ -276,10 +277,16 @@ if (ISLE_BUILD_APP)
 endif()
 
 if (MSVC)
+  # Remove "identifier was truncated to '255' characters" warnings from output.
+  # Impossible to avoid this if using STL map or set.
+  # Unfortunately, MSVC4 has a bug that makes it impossible
+  # to get rid of this warning by using the standard #pragma directive.
+  configure_file("compile.cmd" "compile.cmd")
+  set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE "compile.cmd < NUL")
+
   # These flags have been taken from the defaults for a Visual C++ 4.20 project (the compiler the
   # game was originally built with) and tweaked slightly to produce more debugging info for reccmp.
   # They ensure a recompilation that can be byte/instruction accurate to the original binaries.
-
   target_compile_options(isle PRIVATE "/ML$<$<CONFIG:Debug>:d>")
   target_compile_options(lego1 PRIVATE "/MT$<$<CONFIG:Debug>:d>")
 

LEGO1/compat.h

@@ -18,12 +18,6 @@
 // Impossible to avoid this if using STL map or set.
 // This removes most (but not all) occurrences of the warning.
 #pragma warning(disable : 4786)
-// To really remove *all* of the warnings, we have to employ the following,
-// obscure workaround from https://www.earthli.com/news/view_article.php?id=376
-static class msVC6_4786WorkAround {
-public:
-	msVC6_4786WorkAround() {}
-} msVC6_4786WorkAround;
 
 #define MSVC420_VERSION 1020
 

compile.cmd

@@ -0,0 +1,3 @@
+@echo off
+
+%* | findstr /v /b "warning C4786"