From 3ed9d3c62b1b3bd13d75453a9285e40ff41326d1 Mon Sep 17 00:00:00 2001
From: CN_SZTL <cnsztl@gmail.com>
Date: Sat, 9 Nov 2019 09:48:07 +0800
Subject: [PATCH] usign/swconfig/mtd/dnsmasq/uci: Activate LTO compile option

---
 package/network/config/swconfig/Makefile  | 3 +++
 package/network/services/dnsmasq/Makefile | 4 ++--
 package/system/mtd/Makefile               | 3 ++-
 package/system/usign/Makefile             | 3 +++
 4 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/package/network/config/swconfig/Makefile b/package/network/config/swconfig/Makefile
index 8b1d6cd64a..4d3e572d82 100644
--- a/package/network/config/swconfig/Makefile
+++ b/package/network/config/swconfig/Makefile
@@ -23,6 +23,9 @@ define Package/swconfig
   TITLE:=Switch configuration utility
 endef
 
+TARGET_CFLAGS += -flto
+TARGET_LDFLAGS += -flto=jobserver
+
 TARGET_CPPFLAGS := \
 	-D_GNU_SOURCE \
 	-I$(STAGING_DIR)/usr/include/libnl-tiny \
diff --git a/package/network/services/dnsmasq/Makefile b/package/network/services/dnsmasq/Makefile
index 6c718b2cde..1cd39f5266 100644
--- a/package/network/services/dnsmasq/Makefile
+++ b/package/network/services/dnsmasq/Makefile
@@ -121,8 +121,8 @@ endef
 Package/dnsmasq-dhcpv6/conffiles = $(Package/dnsmasq/conffiles)
 Package/dnsmasq-full/conffiles = $(Package/dnsmasq/conffiles)
 
-TARGET_CFLAGS += -ffunction-sections -fdata-sections
-TARGET_LDFLAGS += -Wl,--gc-sections
+TARGET_CFLAGS += -flto
+TARGET_LDFLAGS += -flto=jobserver
 
 COPTS = -DHAVE_UBUS \
 	$(if $(CONFIG_IPV6),,-DNO_IPV6)
diff --git a/package/system/mtd/Makefile b/package/system/mtd/Makefile
index a76a61f2e9..f31a34a612 100644
--- a/package/system/mtd/Makefile
+++ b/package/system/mtd/Makefile
@@ -36,7 +36,8 @@ endef
 target=$(firstword $(subst -, ,$(BOARD)))
 
 MAKE_FLAGS += TARGET="$(target)"
-TARGET_CFLAGS := $(TARGET_CFLAGS) -Dtarget_$(target)=1 -Wall
+TARGET_CFLAGS += -Dtarget_$(target)=1 -Wall -flto
+TARGET_LDFLAGS += -flto=jobserver
 
 ifdef CONFIG_MTD_REDBOOT_PARTS
   MAKE_FLAGS += FIS_SUPPORT=1
diff --git a/package/system/usign/Makefile b/package/system/usign/Makefile
index 836b1524d3..ab7fda33a3 100644
--- a/package/system/usign/Makefile
+++ b/package/system/usign/Makefile
@@ -30,6 +30,9 @@ define Package/usign
   TITLE:=OpenWrt signature verification utility
 endef
 
+TARGET_CFLAGS += -flto
+TARGET_LDFLAGS += -flto=jobserver
+
 CMAKE_OPTIONS += \
 	-DUSE_LIBUBOX=on