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 8/9] batman-adv-devel: Use section garbage collection to reduce binary size
Date: Tue, 7 May 2013 14:51:08 +0200 [thread overview]
Message-ID: <1367931069-7177-9-git-send-email-sven@narfation.org> (raw)
In-Reply-To: <1367931069-7177-1-git-send-email-sven@narfation.org>
The linker can identify unused sections of a binary when each symbol is stored
in a separate section. This mostly removes unused linker sections and reduces
the size by ~3% on mipsel.
Signed-off-by: Sven Eckelmann <sven@narfation.org>
---
batman-adv-devel/Makefile | 3 +++
1 file changed, 3 insertions(+)
diff --git a/batman-adv-devel/Makefile b/batman-adv-devel/Makefile
index b9e2650..6dc66b8 100644
--- a/batman-adv-devel/Makefile
+++ b/batman-adv-devel/Makefile
@@ -76,6 +76,9 @@ MAKE_BATCTL_ARGS += \
STRIP="/bin/true" \
batctl install
+TARGET_CFLAGS += -ffunction-sections -fdata-sections
+TARGET_LDFLAGS += -Wl,--gc-sections
+
ifneq ($(DEVELOPER)$(CONFIG_KMOD_BATMAN_ADV_DEVEL_BATCTL),)
define Download/batctl
FILE:=$(PKG_BATCTL_FNAME)
--
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 ` Sven Eckelmann [this message]
2013-05-12 8:20 ` [B.A.T.M.A.N.] [PATCH 8/9] batman-adv-devel: Use section garbage collection to reduce binary size Marek Lindner
2013-05-07 12:51 ` [B.A.T.M.A.N.] [PATCH 5/9] batman-adv-devel: Enable Link-time optimization Sven Eckelmann
2013-05-12 8:21 ` Marek Lindner
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