Update CMakeLists.txt

Co-authored-by: Juan Ramos <114601453+juan-lunarg@users.noreply.github.com>

CMakeLists.txt

@@ -31,7 +31,32 @@ if (VUL_WERROR)
     endif()
 endif()
 
-add_compile_options("$<IF:$<CXX_COMPILER_ID:MSVC>,/W4,-Wall -Wextra>")
+if(${CMAKE_CXX_COMPILER_ID} MATCHES "(GNU|Clang)")
+    add_compile_options(
+        -Wall
+        -Wextra
+        -Wpointer-arith
+    )
+    if(${CMAKE_CXX_COMPILER_ID} MATCHES "Clang")
+        add_compile_options(
+            -Wconversion
+            -Wimplicit-fallthrough
+            -Wstring-conversion
+        )
+    endif()
+elseif(MSVC)
+    add_compile_options(
+        /W4
+        /we5038 # Enable warning about MIL ordering in constructors
+    )
+
+    # Enforce stricter ISO C++
+    add_compile_options(/permissive-)
+
+    # Allow usage of unsafe CRT functions and minimize what Windows.h leaks
+    add_compile_definitions(_CRT_SECURE_NO_WARNINGS NOMINMAX WIN32_LEAN_AND_MEAN)
+
+    add_compile_options($<$<BOOL:${MSVC_IDE}>:/MP>) # Speed up Visual Studio builds
 
 add_library(VulkanUtilityHeaders INTERFACE)
 add_library(Vulkan::UtilityHeaders ALIAS VulkanUtilityHeaders)