Problems with AIX and Autoconf

[Bill Wendling]

Hi all,

There's been a problem with autoconf on AIX[45].x machines. It has to do
with the "hardcode_libdir_flag_spec" in the aclocal.m4 file. We have to
change things to this:

      if test "$host_cpu" = ia64; then
        hardcode_libdir_flag_spec='${wl}-R $libdir:/usr/lib:/lib'
        allow_undefined_flag="-z nodefs"
        archive_expsym_cmds="\$CC $shared_flag"' -o $output_objdir/$soname 
${wl}-h$soname $libobjs $deplibs $compiler_flags ${wl}${allow_undefined_flag} 
'"\${wl}$no_entry_flag \${wl}$exp_sym_flag:\$export_symbols"
      else
        #######################################################################
        # This is a MAJOR HACK(tm) to get HDF5 to compile on Pacific Blue.
        # The ``-b nolibpath -b ...'' flags were messing with the mpicc
        # compiler's already defined library paths and it wasn't able to find
        # the libraries it needed to run....DOH!
        hname="`hostname`"

        case "$hname" in
          *pacific.llnl.gov* | *s0*)
            hardcode_libdir_flag_spec=' '
            ;;
          *)
            hardcode_libdir_flag_spec='${wl}-bnolibpath 
${wl}-blibpath:$libdir:/usr/lib:/lib'
            ;;
        esac
        #
        # End MAJOR HACK
        #
        #######################################################################
        # Warning - without using the other run time loading flags,
        # -berok will link without error, but may produce a broken library.
        allow_undefined_flag='${wl}-berok'
        # This is a bit strange, but is similar to how AIX traditionally builds
        # it's shared libraries.
        archive_expsym_cmds="\$CC $shared_flag"' -o $output_objdir/$soname 
$libobjs $deplibs $compiler_flags ${allow_undefined_flag} 
'"\${wl}$no_entry_flag \${wl}$exp_sym_flag:\$export_symbols"' ~$AR -crlo 
$objdir/$libname$release.a $objdir/$soname'
      fi

The problem being that the linker will segfault if the ${wl}... line is
too long. There *has* to be a better way to do this than my hack above.
I'm using autoconf 2.53. Is this fixed in the next release? Is there a
better way to do this for the 2.53 branch?

Thanks.

-- 
|| Bill Wendling                        address@hidden
|| Coding Simian