Re: Problems when building against external libltdl, and workarounds

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Hello Chi-Thanh,

The first issue (building against external libltdl) has already been
fixed in the current snapshots.

The issue about the include file should be fixed now, I just made some
modifications.

I'm not sure about the undefined reference - It might be related to
ltdl-2.2 you are using; I am using ltdl-1.5.22 here without such issues.
It might be caused having mixed the local libltdl (included with
siproxd) and the system installed libltdl while compiling/linking
siproxd.

Could you try the latest siproxd snapshot, perform a clean build and
report back if this works now?

<http://siproxd.tuxworld.ch/siproxd-19Jun2010.tar.gz>

Best regards,
/Thomas


On 19 Jun, Ch=C3=AD-Thanh Christopher Nguy=E1=BB=85n wrote:
> Hello,
>=20
> when building against external libltdl/libtool-2.2, several issues
> come up. Doing ./configure && make with libltdl on the system results
> in:
> ---
> make  all-recursive
> make[1]: Entering directory `/tmp/siproxd-0.8.0'
> Making all in libltdl
> make[2]: Entering directory `/tmp/siproxd-0.8.0/libltdl'
> make[2]: *** No rule to make target `all'.  Stop.
> make[2]: Leaving directory `/tmp/siproxd-0.8.0/libltdl'
> make[1]: *** [all-recursive] Error 1
> make[1]: Leaving directory `/tmp/siproxd-0.8.0'
> make: *** [all] Error 2
> ---
> Removing libltdl from SUBDIRS in Makefile.in will make it build, but=20
> crash on start:
> ---
> Program received signal SIGSEGV, Segmentation fault.
> 0x00002aaaabbe9ac0 in strcmp () from /lib/libc.so.6
> (gdb) bt
> #0 0x00002aaaabbe9ac0 in strcmp () from /lib/libc.so.6
> #1 0x00002aaaab5459f0 in lt_dlpreload_open () from /usr/lib/libltdl.so.7
> #2 0x0000000000416ab3 in load_plugins () at plugins.c:66
> #3 0x0000000000406c78 in main (argc=3D5, argv=3D0x7fffffffe4b8) at
> siproxd.c:294
> ---
> Changing src/plugins.h from #include "../libltdl/ltdl.h" to #include=20
> <ltdl.h> will lead to a new build error:
> ---
> x86_64-pc-linux-gnu-gcc -Wall -D_GNU_SOURCE -DBUILDSTR=3D\"5471\" -O2=20
> -pipe -march=3Damdfam10 -pthread -D_POSIX_THREAD_SAFE_FUNCTIONS -o
> siproxd siproxd.o proxy.o register.o sock.o utils.o sip_utils.o
> sip_layer.o log.o readconf.o rtpproxy.o rtpproxy_relay.o accessctl.o
> route_processing.o security.o auth.o fwapi.o resolve.o dejitter.o=20
> plugins.o .libs/siproxdS.o -Wl,--export-dynamic  -lresolv=20
> /usr/lib64/libosip2.so -lnsl /usr/lib64/libosipparser2.so=20
> /usr/lib64/libltdl.so -ldl
> plugins.o: In function `load_plugins':
> plugins.c:(.text+0x283): undefined reference to=20
> `lt__PROGRAM__LTX_preloaded_symbols'
> collect2: ld returned 1 exit status
> ---
> And adding a
> #define lt__PROGRAM__LTX_preloaded_symbols
> lt_libltdl_LTX_preloaded_symbols will finally make it build
> successfully and not crash on start.
>=20
>=20
> Best regards,
> Chi-Thanh Christopher Nguyen
>=20
> -------------------------------------------------------------------------=
-----
> ThinkGeek and WIRED's GeekDad team up for the Ultimate=20
> GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the=20
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> _______________________________________________
> Siproxd-users mailing list
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