[erlang-questions] [centos-7]With newer Erlang versions has the eliptic curve crypto situation changed?

[Bryan Hunt]

Great, thanks for the quick response Hans. B 

> On 4 May 2018, at 10:54, Hans Nilsson R <hans.r.nilsson@REDACTED> wrote:
> 
> Thanks!
> 
> Will be fixed in OTP-21.0-rc2 and in a patch on OTP-20 which also has this error.
> 
> It is the engine support down in openssl that has problems, so I simply disable our engine support if EC is disabled.
> 
> /Hans
> 
> On 05/03/2018 09:23 PM, Bryan Hunt wrote:
>> 
>> Hi,
>> 
>> Before, when building OTP I always set the compile time option to disable elliptic curve cryptography using the 
>> CFLAGS environmental variable (RHEL doesn’t ship with it) : 
>> 
>> ```
>> export CFLAGS="-DOPENSSL_NO_EC=1"
>> ./otp_build configure  \
>>        --without-odbc \
>>        --without-cosEventDomain \
>>        --without-cosEvent \
>>        --without-cosFileTransfer \
>>        --without-cosNotification \
>>        --without-cosProperty \
>>        --without-cosTime \
>>        --without-cosTransactions \
>>        --without-debugger \
>>        --without-et \
>>        --without-gs \
>>        --without-ic \
>>        --without-javac \
>>        --without-jinterface \
>>        --without-megaco \
>>        --without-observer \
>>        --without-orber \
>>        --without-percept \
>>        --without-typer \
>>        --without-wx \
>>        --without-tv \
>>        --without-diameter \
>>        --without-hipe
>> ```
>> 
>> And that still works for the older versions. 
>> 
>> But when applied to OTP-21.0-rc1 I receive the following error : 
>> 
>> ```
>> gmake[6]: Entering directory `/root/otp/lib/crypto/c_src'
>> CC     ../priv/obj/x86_64-unknown-linux-gnu/crypto.o
>> In file included from /usr/include/openssl/ecdh.h:78:0,
>>                 from /usr/include/openssl/engine.h:86,
>>                 from crypto.c:63:
>> /usr/include/openssl/ec.h:82:4: error: #error EC is disabled.
>> #  error EC is disabled.
>>    ^
>> gmake[6]: Leaving directory `/root/otp/lib/crypto/c_src'
>> gmake[6]: *** [../priv/obj/x86_64-unknown-linux-gnu/crypto.o] Error 1
>> gmake[5]: *** [release_spec] Error 2
>> gmake[5]: Leaving directory `/root/otp/lib/crypto/c_src'
>> gmake[4]: *** [release] Error 2
>> gmake[4]: Leaving directory `/root/otp/lib/crypto/c_src'
>> gmake[3]: *** [release] Error 2
>> gmake[3]: Leaving directory `/root/otp/lib/crypto/c_src'
>> gmake[2]: *** [release] Error 2
>> gmake[2]: Leaving directory `/root/otp/lib/crypto'
>> gmake[1]: Leaving directory `/root/otp/lib'
>> gmake[1]: *** [release] Error 2
>> gmake: *** [release] Error 2
>> The command '/bin/sh -c ./build-erlang.sh' returned a non-zero code: 1
>> Unable to find image 'bryanhuntesl/centos7-erlang:OTP-21.0-rc1' locally
>> docker: Error response from daemon: manifest for bryanhuntesl/centos7-erlang:OTP-21.0-rc1 not found.
>> See 'docker run --help’.
>> ```
>> 
>> Has this behaviour changed recently ?
>> 
>> Bryan
>> 
>> 
>> 
>> 
>> 
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