From: Sven Eckelmann <sven@narfation.org>
To: b.a.t.m.a.n@lists.open-mesh.org
Cc: Sven Eckelmann <sven@narfation.org>
Subject: [B.A.T.M.A.N.] [PATCH 5/9] batman-adv-devel: Enable Link-time optimization
Date: Tue, 7 May 2013 14:51:09 +0200 [thread overview]
Message-ID: <1367931069-7177-10-git-send-email-sven@narfation.org> (raw)
In-Reply-To: <1367931069-7177-1-git-send-email-sven@narfation.org>
Link-time optimization allows to move parts of the optimization from the single
source file to the global source view. This is done by emitting the GIMPLE
representation in each object file and analyzing it again during the link step.
This reduces the binary size by around 6% on mipsel (this includes parts which
were also removed by garbage collection).
Signed-off-by: Sven Eckelmann <sven@narfation.org>
---
batman-adv-devel/Makefile | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/batman-adv-devel/Makefile b/batman-adv-devel/Makefile
index 6dc66b8..cad95c6 100644
--- a/batman-adv-devel/Makefile
+++ b/batman-adv-devel/Makefile
@@ -76,8 +76,8 @@ MAKE_BATCTL_ARGS += \
STRIP="/bin/true" \
batctl install
-TARGET_CFLAGS += -ffunction-sections -fdata-sections
-TARGET_LDFLAGS += -Wl,--gc-sections
+TARGET_CFLAGS += -ffunction-sections -fdata-sections -flto
+TARGET_LDFLAGS += -Wl,--gc-sections -fuse-linker-plugin
ifneq ($(DEVELOPER)$(CONFIG_KMOD_BATMAN_ADV_DEVEL_BATCTL),)
define Download/batctl
--
1.8.2.1
next prev parent reply other threads:[~2013-05-07 12:51 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-07 12:51 [B.A.T.M.A.N.] [PATCH 0/9] Adding size relevant build options Sven Eckelmann
2013-05-07 12:51 ` [B.A.T.M.A.N.] [PATCH 1/9] alfred: Add CFLAGS to the linker step Sven Eckelmann
2013-05-14 9:41 ` Simon Wunderlich
2013-05-07 12:51 ` [B.A.T.M.A.N.] [PATCH 2/9] batctl: " Sven Eckelmann
2013-05-08 5:04 ` Marek Lindner
2013-05-07 12:51 ` [B.A.T.M.A.N.] [PATCH 3/9] batmand: " Sven Eckelmann
2013-05-07 12:51 ` [B.A.T.M.A.N.] [PATCH 4/9] vis: " Sven Eckelmann
2013-05-07 12:51 ` [B.A.T.M.A.N.] [PATCH 5/9] alfred: Use section garbage collection to reduce binary size Sven Eckelmann
2013-05-14 9:44 ` Simon Wunderlich
2013-05-07 12:51 ` [B.A.T.M.A.N.] [PATCH 6/9] alfred: Enable Link-time optimization Sven Eckelmann
2013-05-14 9:45 ` Simon Wunderlich
2013-05-07 12:51 ` [B.A.T.M.A.N.] [PATCH 7/9] batman-adv-devel: Add missing TARGET_* flags to batctl compile Sven Eckelmann
2013-05-08 5:11 ` Marek Lindner
2013-05-08 7:24 ` Sven Eckelmann
2013-05-12 7:52 ` Marek Lindner
2013-05-07 12:51 ` [B.A.T.M.A.N.] [PATCH 8/9] batman-adv-devel: Use section garbage collection to reduce binary size Sven Eckelmann
2013-05-12 8:20 ` Marek Lindner
2013-05-07 12:51 ` Sven Eckelmann [this message]
2013-05-12 8:21 ` [B.A.T.M.A.N.] [PATCH 5/9] batman-adv-devel: Enable Link-time optimization Marek Lindner
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