How to cross-compile OpenSSL for ARM

In a nutshell:

Then set your environment so a gcc 3.3-based ARM crosscompiler (OpenZaurus 3.3.1 in /usr/local/arm/3.3 will be fine) is in your $PATH, and patch your Makefile to use this cross-compiler (the patch also contains a linking instruction to libdl, needed to get the openssl binary):

You can compile it now! (after setting DISTCC to /usr/bin/distcc, DISTCC_HOSTS to your distcc hosts, and using make -j DISTCC_HOSTS*2, for example, instead of make to distribute compiling if you want and can):

You can do the following if you want (that way /opt/arm/openssl will be your local OpenSSL dir, its includes will be in include and its libs in lib):

Get and unpack recent sources, e.g.:

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