Cross Compiling

Issues:

• need cross compile toolchain
• need to cross compile any dependencies (static link what you can)

libz example

echo Getting source code for libraries... if [ ! -d zlib ]; then wget http://zlib.net/zlib-${zlib_version}.tar.gz untar zlib-${zlib_version}.tar.gz ln -s zlib-${zlib_version} zlib fi echo Building libraries... if [ "$rebuild_libs" = true ]; then export cross=arm-linux-gnueabi- # ZLIB cd zlib ./configure --prefix=${install_root} make CC="${cross}gcc" AR="${cross}ar r" RANLIB="${cross}ranlib" make install cd .. fi

openssl example

echo Getting source code for libraries... if [ ! -d openssl ]; then wget https://www.openssl.org/source/openssl-${openssl_version}.tar.gz untar openssl-${openssl_version}.tar.gz ln -s openssl-${openssl_version} openssl fi echo Building libraries... if [ "$rebuild_libs" = true ]; then export cross=arm-linux-gnueabi- # OPENSSL cd openssl ./Configure dist --prefix=${install_root} --openssldir=${install_root} make CC="${cross}gcc" AR="${cross}ar r" RANLIB="${cross}ranlib" make install cd .. fi libwebsockets example need to match the libraries on target machine for any dynamic linking requirements need to match the build to the target kernel (or you might get "kernel too old")