From 55ac5b0a908b85c050f34dc603f62dd4b1fc4e9f Mon Sep 17 00:00:00 2001
From: Jim Huang <jserv@0xlab.org>
Date: Sun, 2 Oct 2011 01:16:17 +0800
Subject: Exclude sha1.c when building libdex for device

In bionic, there is already an optimized SHA-1 hash implementation,
and the file 'sha1.c' in libdex is almost identical.  It is only
necessary to build sha1.c for host version of libdex.

In addition, the SHA-1 hash implementation in bionic is slightly faster
than the one included in libdex.

Here is the reference SHA-1 benchmark on Nexus S:

[libdex]
Rounds: 100000, size: 6250K, time: 1.28s,  speed: 4.768 MB/s

[bionic]
Rounds: 100000, size: 6250K, time: 1.184s, speed: 5.156 MB/s

Change-Id: Ia8918aeaeec75aceecbbb8cd55130d709a9fe311
---
 libdex/Android.mk | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/libdex/Android.mk b/libdex/Android.mk
index 558a7e5ba..575aca5c6 100644
--- a/libdex/Android.mk
+++ b/libdex/Android.mk
@@ -28,7 +28,6 @@ dex_src_files := \
 	Leb128.c \
 	OpCodeNames.c \
 	OptInvocation.c \
-	sha1.c \
 	SysUtil.c \
 	ZipArchive.c
 
@@ -61,7 +60,7 @@ endif # !SDK_ONLY
 ##
 ##
 include $(CLEAR_VARS)
-LOCAL_SRC_FILES := $(dex_src_files)
+LOCAL_SRC_FILES := $(dex_src_files) sha1.c
 LOCAL_C_INCLUDES += $(dex_include_files)
 LOCAL_MODULE_TAGS := optional
 LOCAL_MODULE := libdex
-- 
cgit v1.2.3