From c50810c07da058cc7d2cdce7693f83bd8791de8e Mon Sep 17 00:00:00 2001
From: "Marco Antonio J. Costa" <marco.antonio.costa@gmail.com>
Date: Fri, 27 Dec 2024 18:14:29 -0300
Subject: [PATCH] add option to enable link time optimization

a bit slower to compile for developing so defaults to 'false', but
might be a good idea for the releases.
---
 CMakeLists.txt | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index eaff06529..6cd0d74e6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -9,6 +9,14 @@ set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
 
+include(CheckIPOSupported)
+check_ipo_supported(RESULT LinkTimeOptimization OUTPUT IpoError LANGUAGES C CXX)
+if(LinkTimeOptimization)
+  set(CMAKE_INTERPROCEDURAL_OPTIMIZATION TRUE)
+else()
+  message(WARNING "IPO is not supported: ${IpoError}")
+endif()
+
 option(ADDRESS_SANITIZER OFF)
 if(ADDRESS_SANITIZER)
 	message(STATUS "AddressSanitizer ENABLED for non-Release builds")