From a6d17dcd16cb142691a3f4db99704c31f847ad65 Mon Sep 17 00:00:00 2001
From: Jeff Becker <jeff@i2p.rocks>
Date: Mon, 18 May 2020 11:10:29 -0400
Subject: [PATCH] add WITH_LTO option to disble lto on compile time

---
 cmake/enable_lto.cmake | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/cmake/enable_lto.cmake b/cmake/enable_lto.cmake
index 643385150..c315c6cff 100644
--- a/cmake/enable_lto.cmake
+++ b/cmake/enable_lto.cmake
@@ -1,10 +1,16 @@
 # -flto
 include(CheckIPOSupported)
-check_ipo_supported(RESULT IPO_ENABLED OUTPUT ipo_error)
-if(IPO_ENABLED)
-  message(STATUS "LTO enabled")
+option(WITH_LTO "enable lto on compile time" ON)
+if(WITH_LTO)
+  check_ipo_supported(RESULT IPO_ENABLED OUTPUT ipo_error)
+  if(IPO_ENABLED)
+    message(STATUS "LTO enabled")
+  else()
+    message(WARNING "LTO not supported by compiler: ${ipo_error}")
+  endif()
 else()
-  message(WARNING "LTO not supported by compiler: ${ipo_error}")
+  message(STATUS "LTO disabled")
+  set(IPO_ENABLED OFF)
 endif()
 
 function(enable_lto)