SDL: cmake: disable warnings in libm + warning about EMMS instruction (51c10)

From 51c10bef0b06e308bb819335b740fbe583a08064 Mon Sep 17 00:00:00 2001
From: Anonymous Maarten <[EMAIL REDACTED]>
Date: Thu, 23 Mar 2023 06:56:44 +0100
Subject: [PATCH] cmake: disable warnings in libm + warning about EMMS
 instruction

SDL_BlitCopyMMX ends with _mm_empty(), so the MMX state should be emptied.

(_mm_empty is the intrinsic function for emms)
---
 CMakeLists.txt | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b5441b90bd98..d1ca06ad91f0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -526,6 +526,17 @@ file(GLOB SOURCE_FILES
   ${SDL2_SOURCE_DIR}/src/video/*.c
   ${SDL2_SOURCE_DIR}/src/video/yuv2rgb/*.c)
 
+if(USE_INTELCC)
+  # warning #39: division by zero
+  # warning #239: floating point underflow
+  # warning #264: floating-point value does not fit in required floating-point type
+  # warning #13203: No EMMS instruction before call to function
+  set_property(SOURCE "${SDL2_SOURCE_DIR}/src/libm/e_exp.c" APPEND_STRING PROPERTY COMPILE_FLAGS " -wd239 -wd264")
+  set_property(SOURCE "${SDL2_SOURCE_DIR}/src/libm/e_log.c" APPEND_STRING PROPERTY COMPILE_FLAGS " -wd39")
+  set_property(SOURCE "${SDL2_SOURCE_DIR}/src/libm/e_log10.c" APPEND_STRING PROPERTY COMPILE_FLAGS " -wd39")
+  set_property(SOURCE "${SDL2_SOURCE_DIR}/src/video/SDL_blit_copy.c" APPEND_STRING PROPERTY COMPILE_FLAGS " -wd13203")
+endif()
+
 
 set(SDL_DEFAULT_ASSERT_LEVEL_CONFIGURED 1)
 if(SDL_ASSERTIONS MATCHES "^(auto|)$")