Cross-compiling with OpenSSL

[Alexey Romanov]

On Thu, Sep 16, 2010 at 7:46 PM, Rickard Green
<rickard.s.green@REDACTED> wrote:
> Alexey Romanov wrote:
>>
>> It turned out I need the crypto application in my embedded Erlang
>> system. So I've cross-compiled OpenSSL 1.0.0a using this approach:
>>
>> http://stuff.thatblogs.com/content/cross-compiling-openssl-how-cross-compile-openssl,
>> copied apps/openssl, include/openssl/*, lib/libcrypto.a, and
>> lib/libssl.a (is anything else needed, by the way?) to
>> ~/sbctools/arm-2007q3/openssl/1.0.0a and issued this command:
>>
>> ./otp_build configure --host=arm-none-linux-gnueabi
>> --build=i686-pc-linux-gnu --prefix=/opt/erlang
>> erl_xcomp_sysroot=~/sbctools/arm-2007q3 --disable-smp
>> --disable-megaco-flex-scanner-lineno
>> --disable-megaco-reentrant-flex-scanner --without-termcap
>> --without-javac --with-ssl=~/sbctools/arm-2007q3/openssl/1.0.0a
>>
>> Surprisingly, this gives
>>
>> configure: error: Invalid path to option --with-ssl=PATH (not a
>> subdirectory to cross system root)
>>
>> Certainly ~/sbctools/arm-2007q3/openssl/1.0.0a is a subdirectory of
>> ~/sbctools/arm-2007q3. I've tried to supply the path from the cross
>> system root instead (i.e. --with-ssl=openssl/1.0.0a), but this doesn't
>> work either. How can I fix this?
>>
>> Yours, Alexey Romanov
>
> otp_build expands tilde for erl_xcomp_sysroot, but not for --with-ssl, so if
> you use absolute paths beginning with / it should work.

Thanks!

> You seem to use an r13 since the ssl path isn't required to have any
> relation to the sysroot in r14. The problem should also go away if you use
> r14 instead of r13.

Yes, I am currently on R13, was planning to switch soon.

> Regards,
> Rickard
> --
> Rickard Green, Erlang/OTP, Ericsson AB.
>