[erlang-questions] R16 + Centos + Crypto + ESL Package
Thu Jul 31 11:33:34 CEST 2014
----- Original Message -----
> Ð”Ð°Ð½Ð¸Ð»Ð° Ð¤ÐµÐ´Ñ�Ñ‰Ð¸Ð½ <danilagamma@REDACTED> wrote:
> >After some digging we found that `CFLAGS="-DOPENSSL_NO_EC=1"` rewrites
> >`CFLAGS="-g -O2"`, which was the culprit of slowdown.
> Ouch, I knew there was a reason I always try to avoid passing C compiler
> flags to OTP's 'configure'.:-)
> >So the question is: what is the best way to 'append' CFLAGS option, rather
> >then providing '-DOPENSSL_NO_EC=1 -g -O2' assuming that we've appended
> >correct default options?
> The general, semi-ugly method I use when I need to pass some C compiler
> flags is to create a wrapper, a la
> $ cat /usr/local/softfloat/bin/gcc
> exec /usr/local/gcc-4.2.4/bin/gcc -msoft-float "$@"
> - and then make sure to have the directory with the wrapper early on in
> $PATH. If I'm really ambitious I may name the wrapper gcc-<foo>-<bar>
> and pass that as CC (IIRC) to 'configure'.
> For this particular case though, if you aren't afraid to touch the
> source, you can apply this diff instead:
> --- lib/crypto/c_src/crypto.c (revision 69183)
> +++ lib/crypto/c_src/crypto.c (revision 69184)
> @@ -77,7 +77,8 @@
> #if OPENSSL_VERSION_NUMBER >= 0x009080ffL \
> && !defined(OPENSSL_NO_EC) \
> && !defined(OPENSSL_NO_ECDH) \
> - && !defined(OPENSSL_NO_ECDSA)
> + && !defined(OPENSSL_NO_ECDSA) \
> + && !defined(OPENSSL_NO_EC2M)
> # define HAVE_EC
> I was actually about to report it as a bug fix, but found that R17 - uh,
> 17? - has much better one (it disables *only* the EC2M stuff which is
> all that is missing on "current" CentOS/RHEL at least) - thanks to the
> OTP team for that! - "in advance", we're not ready for "17" yet. If you
> are, I suggest that you try it.
The R17 version was added by this pull request:
You could try to apply this to R16 as well.
> --Per Hedeland
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