https://sourceware.org/bugzilla/show_bug.cgi?id=19579
Andreas Krebbel <krebbel at linux dot vnet.ibm.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |krebbel at linux dot
vnet.ibm.com
--- Comment #5 from Andreas Krebbel <krebbel at linux dot vnet.ibm.com> ---
I can reproduce the failure building mopac7-1.15 with -fPIC and -pie. The
problem disappears when omitting -pie.
The error gets reported after elf_s390_finish_dynamic_symbol returned false
here:
else if (bfd_link_pic (info)
&& SYMBOL_REFERENCES_LOCAL (info, h))
{
/* If this is a static link, or it is a -Bsymbolic link and
the symbol is defined locally or was forced to be local
because of a version file, we just want to emit a
RELATIVE reloc. The entry in the global offset table
will already have been initialized in the
relocate_section function. */
----> if (!h->def_regular)
return FALSE;
The symbol in question is geovar_ :
$ readelf -s ./.libs/libmopac7.so | grep geovar_
388: 000000000399f920 8656 OBJECT GLOBAL DEFAULT 22 geovar_
5819: 000000000399f920 8656 OBJECT GLOBAL DEFAULT 22 geovar_
$ readelf -s mopac7app.o | grep geovar
160: 0000000000000008 5768 OBJECT GLOBAL DEFAULT COM geovar_
It is not clear to me yet how this is supposed to work correctly yet. As usual
I've tried to figure out what x86 is doing but I ran into similiar problems:
with 2.23.52 I see the very same problem as on s390:
/bin/sh ../libtool --tag=F77 --mode=link gfortran -g -O2 -std=legacy
-fno-automatic -fPIC -lm -Wl,--
gfortran -g -O2 -std=legacy -fno-automatic -fPIC -Wl,--as-needed -Wl,-z
-Wl,defs -pie -o .libs/mopac7 m
/usr/bin/ld: final link failed: Nonrepresentable section on output
collect2: error: ld returned 1 exit status
make[1]: *** [mopac7] Error 1
Using head binutils however I get:
gfortran -g -O2 -std=legacy -fno-automatic -fPIC -Wl,--as-needed -Wl,-z
-Wl,defs -pie -o .libs/mopac7 mopac7app.o ./.libs/libmopac7.so -lm
-Wl,--rpath -Wl,/home/andreas/mopac/install/lib
/home/andreas/binutils/binutils-26022016-install/bin/ld: mopac7app.o:
relocation R_X86_64_PC32 against undefined symbol `geokst_' can not be used
when making a shared object; recompile with -fPIC
/home/andreas/binutils/binutils-26022016-install/bin/ld: final link failed: Bad
value
Although everything is built with -fPIC
I'll continue next week.
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