Re: [exim] Testing Exim 4.70 prerelease || undefined referen…

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Author: Phil Pennock
Date:  
To: List
CC: exim-users
Subject: Re: [exim] Testing Exim 4.70 prerelease || undefined reference to `EVP_sha256'
On 2009-10-16 at 12:11 +0200, List wrote:
> Hi,
>
> with last commit:
>
>   =====================================
>   Modified files:
>     exim-src/src         expand.c functions.h host.c tls-openssl.c 
>   Log:
>   Bugzilla #722

>
>   Revision  Changes    Path
>   1.104     +86 -0     exim/exim-src/src/expand.c
>   1.46      +1 -0      exim/exim-src/src/functions.h
>   1.30      +5 -0      exim/exim-src/src/host.c
>   1.17      +71 -3     exim/exim-src/src/tls-openssl.c

>
> Index: expand.c
> =====================================
>
> awk '{ print ($1+1) }' cnumber.h > cnumber.temp
> rm -f cnumber.h; mv cnumber.temp cnumber.h
> gcc version.c
> rm -f exim
> gcc -o exim
> tls.o: In function `tls_init':
> tls.c:(.text+0x4bc): undefined reference to `EVP_sha256'
> collect2: ld returned 1 exit status
> make[1]: *** [exim] Error 1
> make[1]: Leaving directory `/usr/src/rpm/BUILD/exim-4.70/build-Linux-i386'
> make: *** [all] Error 2
> error: Bad exit status from /var/tmp/rpm-tmp.8761 (%build)


Crap. This is my code. Although the actual commit is revision 1.16 or
tls-openssl.c, which adds the reference to EVP_sha256(). That's for
Bugzilla #674.

You're linking against OpenSSL, right?

What does running:
openssl version
say?

EVP_sha256() was added in 2004; surely any version of OpenSSL old enough
to lack this support has major security issues and is a danger to the
system it's running on?

It looks like it might be 0.9.8-onwards. But I can't find any
authoritative statement to that effect, only third-party comments.

-Phil