From 7e655a207e58fb8e5c7d76bd5727558e6b4c8b0c Mon Sep 17 00:00:00 2001
From: Drashna Jaelre <drashna@live.com>
Date: Thu, 2 May 2019 08:03:42 -0700
Subject: Add option to enable LTO easily  (#5674)

* Add option to enable LTO easily and disable features that cause compiling errors with LTO

* Add documentation about LTO option

* Add to show_options
---
 tmk_core/common.mk | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'tmk_core')

diff --git a/tmk_core/common.mk b/tmk_core/common.mk
index 94f3c2380..221688755 100644
--- a/tmk_core/common.mk
+++ b/tmk_core/common.mk
@@ -208,6 +208,13 @@ ifeq ($(strip $(SHARED_EP_ENABLE)), yes)
     TMK_COMMON_DEFS += -DSHARED_EP_ENABLE
 endif
 
+
+ifeq ($(strip $(LINK_TIME_OPTIMIZATION_ENABLE)), yes)
+    EXTRAFLAGS += -flto
+    TMK_COMMON_DEFS += -DLINK_TIME_OPTIMIZATION_ENABLE
+    TMK_COMMON_DEFS += -DNO_ACTION_MACRO
+    TMK_COMMON_DEFS += -DNO_ACTION_FUNCTION
+endif
 # Bootloader address
 ifdef STM32_BOOTLOADER_ADDRESS
     TMK_COMMON_DEFS += -DSTM32_BOOTLOADER_ADDRESS=$(STM32_BOOTLOADER_ADDRESS)
-- 
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