From c18fe8098f910f1d3a74e4464091c83fbcba7a21 Mon Sep 17 00:00:00 2001
From: Recep Aslantas <info@recp.me>
Date: Thu, 23 Jul 2020 19:12:54 +0300
Subject: [PATCH] build: try to remove RTC1 from CMake build

---
 CMakeLists.txt | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0f00beb..2accabd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -22,8 +22,16 @@ if(CGLM_USE_C99)
 endif()
 
 if(MSVC)
-	add_definitions(-DNDEBUG -D_WINDOWS -D_USRDLL -DCGLM_EXPORTS -DCGLM_DLL)
-	add_compile_options(/W3 /Ox /Gy /Oi /TC)
+  add_definitions(-DNDEBUG -D_WINDOWS -D_USRDLL -DCGLM_EXPORTS -DCGLM_DLL)
+  add_compile_options(/W3 /Ox /Gy /Oi /TC)
+  
+  # Ref: https://skia.googlesource.com/third_party/sdl/+/refs/heads/master/CMakeLists.txt#225
+  # Make sure /RTC1 is disabled, otherwise it will use functions from the CRT
+  foreach(flag_var
+      CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE
+      CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO)
+    string(REGEX REPLACE "/RTC(su|[1su])" "" ${flag_var} "${${flag_var}}")
+  endforeach(flag_var)
 else()
   add_compile_options(-Wall -Werror -O3)
 endif()