* Matthias Klose wrote on Tue, Jan 04, 2011 at 09:34:07PM CET: > On 04.01.2011 20:56, Ralf Wildenhues wrote: > >* Matthias Klose wrote on Tue, Jan 04, 2011 at 02:57:41PM CET: > >>With gcc, gcc-4.5 and binutils from experimental, the following > >>configure test (taken from petsc) fails with --as-needed:
> >>$ mpif90 test.F -Wl,--as-needed -Wall -Wno-unused-variable -g > >>-I/usr/lib/openmpi/include -I/usr/lib/openmpi/lib > >>-L/usr/lib/openmpi/lib -L/usr/lib/gcc/i686-linux-gnu/4.5.2 -ldl > >>-lmpi -lopen-rte -lopen-pal -lnsl -lutil -lgcc_s -lpthread > >>-ldl > >>/usr/bin/ld: /tmp/cccq3IWF.o(.debug_info+0x48d): unresolvable > >>R_X86_64_64 relocation against symbol `mpi_fortran_argv_null_' > >[...] > >>the error messages hint to an object file not built with -fPIC, but > >>I didn't find one yet. > > > >Can you show -showme and -v output? > /usr/lib/gcc/x86_64-linux-gnu/4.5.2/collect2 --build-id --no-add-needed > --eh-frame-hdr -m elf_x86_64 --hash-style=both -dynamic-linker > /lib64/ld-linux-x86-64.so.2 > /usr/lib/gcc/x86_64-linux-gnu/4.5.2/../../../../lib/crt1.o > /usr/lib/gcc/x86_64-linux-gnu/4.5.2/../../../../lib/crti.o > /usr/lib/gcc/x86_64-linux-gnu/4.5.2/crtbegin.o -L/usr/lib/openmpi/lib > -L/usr/lib/gcc/i686-linux-gnu/4.5.2 -L/usr/lib/openmpi/lib > -L/usr/lib/gcc/x86_64-linux-gnu/4.5.2 > -L/usr/lib/gcc/x86_64-linux-gnu/4.5.2/../../../../lib -L/lib/../lib > -L/usr/lib/../lib -L/usr/lib/gcc/x86_64-linux-gnu/4.5.2/../../.. > /tmp/ccqYKv1H.o --as-needed -ldl -lmpi -lopen-rte -lopen-pal -lnsl -lutil > -lgcc_s -lpthread -ldl -lmpi_f90 -lmpi_f77 -lmpi -lopen-rte -lopen-pal -ldl > --export-dynamic -lnsl -lutil -lgfortran -lm -ldl -lgfortran -lm -lgcc_s > -lgcc -lpthread -lc -lgcc_s -lgcc > /usr/lib/gcc/x86_64-linux-gnu/4.5.2/crtend.o > /usr/lib/gcc/x86_64-linux-gnu/4.5.2/../../../../lib/crtn.o > /usr/bin/ld: /tmp/ccqYKv1H.o(.debug_info+0x48d): unresolvable R_X86_64_64 > relocation against symbol `mpi_fortran_argv_null_' > /usr/bin/ld: /tmp/ccqYKv1H.o(.debug_info+0x4a7): unresolvable R_X86_64_64 > relocation against symbol `mpi_fortran_argv_null_' > /usr/bin/ld: /tmp/ccqYKv1H.o(.debug_info+0x511): unresolvable R_X86_64_64 > relocation against symbol `mpi_fortran_errcodes_ignore_' > /usr/bin/ld: /tmp/ccqYKv1H.o(.debug_info+0x52b): unresolvable R_X86_64_64 > relocation against symbol `mpi_fortran_errcodes_ignore_' Thanks. libmpi_f90 should provide these symbols. libmpi_f77 references them on my system, but doesn't have a DT_NEEDED entry on libmpi_f90.so.0. Can you wrap -lmpi_f90 in '-Wl,--no-as-needed ... -Wl,--as-needed' when running commands manually, to see whether that fixes it? Can you show nm output for the generated .o file? I remember there have been GCC or binutils issues with as-needed and symbols in common blocks, but can't find a reference now. Thanks, Ralf -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
