From 951f01709bf1f5c0997255beaf68eb073ccdda7e Mon Sep 17 00:00:00 2001
From: Tamas Nepusz <ntamas@gmail.com>
Date: Mon, 1 Jul 2024 18:21:15 +0200
Subject: [PATCH] fix: make sure to compile igrpah with LTO when available

---
 setup.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/setup.py b/setup.py
index 11d4cd967..1610a5f1d 100644
--- a/setup.py
+++ b/setup.py
@@ -283,6 +283,9 @@ def _compile_in(
         for deps in "ARPACK BLAS GLPK GMP LAPACK".split():
             args.append("-DIGRAPH_USE_INTERNAL_" + deps + "=ON")
 
+        # Use link-time optinization if available
+        args.append("-DIGRAPH_ENABLE_LTO=AUTO")
+
         # -fPIC is needed on Linux so we can link to a static igraph lib from a
         # Python shared library
         args.append("-DCMAKE_POSITION_INDEPENDENT_CODE=ON")