--- rpl/README	2011/10/02 14:14:29	1.19
+++ rpl/README	2012/04/07 16:39:04	1.20
@@ -40,6 +40,19 @@ error related to OpenSSL, you shall try
 'make'. On some system, OpenSSL configure script is unable to set compiler
 flags.
 
+  * RPL/2 cross compilation :
+
+	To cross-compile RPL/2, you have to build in a first time a native
+	RPL/2 on build host. Installation is not required. In a second time,
+	you have to configure RPL/2 for target host in another directory like :
+
+../rpl/configure --host=arm-unknown-linux-gnueabi --enable-full-static
+--with-sysroot=/home/bertrand/x-tools/arm-unknown-linux-gnueabi/arm-unknown-linux-gnueabi/sysroot
+--without-mysql --without-postgresql
+--with-rpltools=/home/bertrand/cvs/rpl/build --with-openssl-arch=linux-generic32
+
+	Of course, you have to configure OpenSSL with --with-openssl-arch.
+
   * RPL/2 is known to run on :
 
 	- Linux (kernel 2.6.26 and beyond). Test distribution is Debian.