Compile openssl cross Overview: because of work requirements, need transplants openssl open source library to arm machine PC environment:. Ubuntu14 04 64-Wei core board: mips linux 32 Wei 1 , download the source code official website address (HTTPS: // www.openssl.org / source / old /) 2. Execute config $ setarch i386. / config no-asm shared --prefix = / opt / soft / openssl Emphasis: 64-bit system cross-compilation openssl support running on 32-bit target board needs to be set: i386 setarch 3 . modify the Makefile search -m64 option and delete, a total of two. 3. Generate the library file $ make && make install