[openwrt/openwrt] nftables: Activate link time optimization (LTO)

[LEDE Commits]

hauke pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/103225b4127dbcc7747b4fb8d4f4d7e2c89ed67a

commit 103225b4127dbcc7747b4fb8d4f4d7e2c89ed67a
Author: Hauke Mehrtens <hauke at hauke-m.de>
AuthorDate: Tue Sep 1 14:05:12 2020 +0200

    nftables: Activate link time optimization (LTO)
    
    The ipk sizes for mips_24Kc change like this:
    old:
    nftables-json_0.9.6-1_mips_24kc.ipk     231.968
    nftables-nojson_0.9.6-1_mips_24kc.ipk   204.731
    
    new:
    nftables-json_0.9.6-2_mips_24kc.ipk     221.894
    nftables-nojson_0.9.6-2_mips_24kc.ipk   193.932
    
    Signed-off-by: Hauke Mehrtens <hauke at hauke-m.de>
---
 package/network/utils/nftables/Makefile | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/package/network/utils/nftables/Makefile b/package/network/utils/nftables/Makefile
index 8f6e605715..7830596e84 100644
--- a/package/network/utils/nftables/Makefile
+++ b/package/network/utils/nftables/Makefile
@@ -8,7 +8,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=nftables
 PKG_VERSION:=0.9.6
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
 PKG_SOURCE_URL:=https://netfilter.org/projects/$(PKG_NAME)/files
@@ -58,6 +58,9 @@ ifeq ($(BUILD_VARIANT),json)
   CONFIGURE_ARGS += --with-json
 endif
 
+TARGET_CFLAGS += -flto
+TARGET_LDFLAGS += -flto
+
 define Package/nftables/install/Default
 	$(INSTALL_DIR) $(1)/usr/sbin
 	$(CP) $(PKG_INSTALL_DIR)/usr/sbin/nft $(1)/usr/sbin/