From: Luotao Fu <luotao@alea.kikihome>
Date: Thu, 11 Jun 2009 00:35:26 +0200
Subject: [PATCH] fix rxtx_path for crosscompile

RXTX_PATH is guessed by configure script. If
a. jdk version is unknown
b. crosscompiling
c. JAVA_HOME is set
the RXTX_PATH won't be set, which leads to an empty -rpath and finally
librxtxSerial fails to link impSerial.o object. This means that the whole thing
would be badly broken since this way the jni would fail to find bunch of symbols
during initialisation. This patch introduces a CROSS_RXTX_PATH environment
variable.  This fixes the problem during cross compiling only.

Signed-off-by: Luotao Fu <l.fu@pengutronix.de>

Index: rxtx-2.1-7r2/configure.in
===================================================================
--- rxtx-2.1-7r2.orig/configure.in	2009-06-10 23:34:04.000000000 +0200
+++ rxtx-2.1-7r2/configure.in	2009-06-10 23:45:53.000000000 +0200
@@ -506,6 +506,7 @@
 		#echo ----------------------------
 	case $target_os in 
 	linux*)
+		RXTX_PATH=$CROSS_RXTX_PATH
 	;;
 	beos*)
 		TARGETLIB="\$(target_triplet)/librxtxSerial.la"