I do see that one part of libtool is using
${wl}-z ${wl}defaultextractbut another is using
-z defaultextract
Perhaps this fragment dates from before the C compiler was used to link.
Bob
On Wed, 21 Jul 2004, komiyama wrote:
Hi,
I have a problem with linking using libtool
When libtool try to link shared library from convinient library, like,
/bin/bash ../libtool --mode=link gcc -g -O2 -o libresult.la -lelf -lmylib subdir/libfoo.la subdir2/libvar.la
It invoke gcc as,
gcc -shared -Wl,-h -Wl,libresult.so.0 -o .libs/libresult.so.0.0.0 -z allextract subdir/.libs/libfoo.a subdir2/.libs/libvar.a -z defaultextract -lelf -lmylib
The problem is gcc dropped "-z defaultextract". So in gcc internal, it called linker as,
/usr/local/gcc/2.95.3/lib/gcc-lib/sparc-sun-solaris2.7/2.95.3/collect2 -V -G -dy -z text -Y P,/usr/ccs/lib:/usr/lib -Qy -o .libs/libresult.so.0.0.0 /usr/local/gcc/2.95.3/lib/gcc-lib/sparc-sun-solaris2.7/2.95.3/crti.o /usr/ccs/lib/values-Xa.o /usr/local/gcc/2.95.3/lib/gcc-lib/sparc-sun-solaris2.7/2.95.3/crtbegin.o -L/usr/local/gcc/2.95.3/lib/gcc-lib/sparc-sun-solaris2.7/2.95.3 -L/usr/ccs/bin -L/usr/ccs/lib -L/usr/local/gcc/2.95.3/lib -h libresult.so.0 -z allextract subdir/.libs/libfoo.a subdir2/.libs/libvar.a -lelf -lmylib -lgcc -lgcc /usr/local/gcc/2.95.3/lib/gcc-lib/sparc-sun-solaris2.7/2.95.3/crtend.o /usr/local/gcc/2.95.3/lib/gcc-lib/sparc-sun-solaris2.7/2.95.3/crtn.o
So linker try to link all symbol even specified with -l. So it cause symbol conflict when convinient library and library specified with -l has same symbol.
I think in GCC case, libtool need to apply -z options as,
... -Wl,-z -Wl,allextract subdir/.libs/libfoo.a subdirs2/.libs/libvar.a -Wl,-z -Wl,defaultextract ...
( whole_archive_flag_spec="-Wl,-z -Wl,allextract\$convenience -Wl,-z -Wl,defaultextract" )
Envionment: O.S. : Solaris8 (Sparc) GCC : 2.95.3 Autoconf/Automake/libtool:2.59/1.8.5/1.5.6
Regards, Takeo Komiyama ----------------------------------------------------------------------- Takeo Komiyama Voice : +81-22-377-9767 Fax : +81-22-377-9709
Freescale semiconductor Inc. 2-9-1 , Akedori, Izumiku, Sendai-shi, Miyagi-ken 981-3206 Email : [EMAIL PROTECTED] -----------------------------------------------------------------------
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====================================== Bob Friesenhahn [EMAIL PROTECTED] http://www.simplesystems.org/users/bfriesen
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