From eec35a214dd2f8b0d18a66340e7b34e2928e1411 Mon Sep 17 00:00:00 2001
From: Martino Fontana <tinozzo123@gmail.com>
Date: Fri, 23 Jan 2026 17:55:57 +0100
Subject: [PATCH] CMakeLists: Use `CMAKE_INTERPROCEDURAL_OPTIMIZATION` for LTO
 Just a simple modernization. LTO is still disabled by default.

---
 CMakeLists.txt | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 91b80a5718c..1a346103d1a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -377,15 +377,13 @@ if(CMAKE_SYSTEM_NAME MATCHES "Darwin")
 endif()
 
 if(ENABLE_LTO)
-  if(CMAKE_C_COMPILER_ID MATCHES "MSVC")
-    add_compile_options(/GL)
-    string(APPEND CMAKE_EXE_LINKER_FLAGS " /LTCG")
+  include(CheckIPOSupported)
+  check_ipo_supported(RESULT supported OUTPUT error)
+
+  if(supported)
+    set(CMAKE_INTERPROCEDURAL_OPTIMIZATION TRUE)
   else()
-    check_and_add_flag(LTO -flto)
-    if(CMAKE_CXX_COMPILER_ID STREQUAL GNU)
-      set(CMAKE_AR gcc-ar)
-      set(CMAKE_RANLIB gcc-ranlib)
-    endif()
+    message(STATUS "IPO / LTO not supported: <${error}>")
   endif()
 endif()