RE: wont compile exim4.14/sa-exim/dlopen 3.0 ?

The -ldl is indeed your problem...

I just re-compiled today and had that problem.

I added it real quick and dirty to the LIBS and everything is fine.

I am running a RedHat 8.0 system with Exim 4.14 and sa-exim 3.0

-Tom


-----Original Message-----
From: Marc MERLIN [mailto:[email protected]] 
Sent: Tuesday, May 13, 2003 11:44 AM
To: Anton Emilov
Cc: [email protected]
Subject: Re: [SA-exim] wont compile exim4.14/sa-exim/dlopen 3.0 ?


On Tue, May 13, 2003 at 05:43:13PM +0300, Anton Emilov wrote:
>       I followed strictly the build instructions but it appears I have
>       missed something. I am trying to build exim 4.14 with sa-exim
>       3.0 and dlopen patch on Debian box
 
On which architecture? 
 
>       Though I applied the patch
> 
> gcc -o exim -rdynamic acl.o child.o crypt16.o daemon.o dbfn.o debug.o
deliver.o directory.o dns.o drtables.o enq.o exim.o expand.o filter.o
globals.o header.o host.o ip.o log.o lss.o match.o moan.o os.o parse.o
queue.o rda.o readconf.o receive.o retry.o rewrite.o route.o search.o
smtp_in.o smtp_out.o spool_in.o spool_out.o store.o string.o tls.o tod.o
transport.o tree.o verify.o local_scan.o  version.o \
>   pcre/libpcre.a \
>   routers/routers.a transports/transports.a lookups/lookups.a \
>   auths/auths.a \
>   -lresolv -lnsl -lcrypt    \
>    -ldb
> local_scan.o: In function `local_scan':
> local_scan.o(.text+0x3c): undefined reference to `dlerror'
> local_scan.o: In function `load_local_scan_library':
> local_scan.o(.text+0xc9): undefined reference to `dlopen'
> local_scan.o(.text+0xed): undefined reference to `dlsym'
> local_scan.o(.text+0xfd): undefined reference to `dlclose'
> local_scan.o(.text+0x11e): undefined reference to `dlsym'
> local_scan.o(.text+0x12e): undefined reference to `dlclose'
> local_scan.o(.text+0x14e): undefined reference to `dlclose'
> local_scan.o(.text+0x179): undefined reference to `dlclose'
> local_scan.o(.text+0x1a0): undefined reference to `dlsym'
> local_scan.o(.text+0x1bc): undefined reference to `dlclose'
> collect2: ld returned 1 exit status
> make[1]: *** [exim] Error 1
> make[1]: Leaving directory `/root/exim-4.14/build-Linux-i386'
> make: *** [go] Error 2
       
Right, you are missing -ldl, which prevents dynamic symbols from working. On
my system, it builts as such: gcc -o exim -rdynamic acl.o child.o crypt16.o
daemon.o dbfn.o debug.o deliver.o directory.o dns.o drtables.o enq.o exim.o
expand.o filter.o globals.o header.o host.o ip.o log.o lss.o match.o moan.o
os.o parse.o queue.o rda.o readconf.o receive.o retry.o rewrite.o route.o
search.o smtp_in.o smtp_out.o spool_in.o spool_out.o store.o string.o tls.o
tod.o transport.o tree.o verify.o local_scan.o perl.o version.o \
  -lpcre \
  routers/routers.a transports/transports.a lookups/lookups.a \
  auths/auths.a \
  -lresolv -lnsl -lcrypt   -lpam \
   -ldb -lldap -llber -lmysqlclient -lpq -rdynamic  -L/usr/local/lib
/usr/lib/perl/5.6.1/auto/DynaLoader/DynaLoader.a -L/usr/lib/perl/5.6.1/CORE
-lperl -ldl -lm -lc -lcrypt -lgnutls -ltasn1 -lgcrypt
 
When you build exim, try setting EXTRALIBS_EXIM=-ldl in the Makefile (exim's
EDITME file)

I don't have to add -ldl, it gets added by itself. I looked while, and it 
seems to be becuase of perl on my system, which also sets -ldl.

I have a hard time to believe that the dlopen patch is missing -ldl from it,
but it seems to be the case. I'll add it to the patch after you confirm that
adding -ldl fixed it for you

Marc
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