Re: [PATCH] x86-64 and multilib

[Albert Chin]

On Fri, Feb 06, 2004 at 12:35:09PM +0900, Jens Petersen wrote:
> We've been using this multilib patch for a while in Red Hat
> Linux and Fedora Core.  Can it be applied to HEAD please?

You reset sys_lib_dlsearch_path_spec. A few lines above you patch,
m4/libtool.m4 has:
  # Append ld.so.conf contents to the search path
  if test -f /etc/ld.so.conf; then
    lt_ld_extra=`$SED -e 's/[:,\t]/ /g;s/=[^=]*$//;s/=[^= ]* / /g' 
/etc/ld.so.conf`
    sys_lib_dlsearch_path_spec="/lib /usr/lib $lt_ld_extra"
  fi

So, do you want to add to sys_lib_dlsearch_path_spec?

Also, do you want to set sys_lib_search_path_spec,
sys_lib_dlsearch_path_spec for non x86_64 systems? The patch does this
which, as far as I can see, is not current behavior.

> Cheers, Jens
> 
> 
> 2004-02-06  Jens Petersen  <address@hidden>
> 
>       * m4/libtool.m4 (AC_LIBTOOL_SYS_DYNAMIC_LINKER): Add Linux
>       multilib support.
>       (AC_DEPLIBS_CHECK_METHOD): Add x86_64 to Linux host_cpu cases.
> 
> 
> Index: libtool.m4
> ===================================================================
> RCS file: /cvsroot/libtool/libtool/m4/libtool.m4,v
> retrieving revision 1.37
> diff -u -r1.37 libtool.m4
> --- libtool.m4        5 Feb 2004 14:53:16 -0000       1.37
> +++ libtool.m4        6 Feb 2004 03:33:01 -0000
> @@ -1853,6 +1853,26 @@
>    # people can always --disable-shared, the test was removed, and we
>    # assume the GNU/Linux dynamic linker is in use.
>    dynamic_linker='GNU/Linux ld.so'
> +
> +  # find out which ABI we are using
> +  libsuff=
> +  case "$host_cpu" in
> +    x86_64*|s390x*|powerpc64*)
> +      echo '[#]line __oline__ "configure"' > conftest.$ac_ext
> +      if AC_TRY_EVAL(ac_compile); then
> +        case `/usr/bin/file conftest.$ac_objext` in
> +          *64-bit*)
> +            libsuff=64
> +            ;;
> +        esac
> +      fi
> +      rm -rf conftest*
> +      ;;
> +    *)
> +      ;;
> +  esac
> +  sys_lib_dlsearch_path_spec="/lib${libsuff} /usr/lib${libsuff}"
> +  sys_lib_search_path_spec="/lib${libsuff} /usr/lib${libsuff} 
> /usr/local/lib${libsuff}"
>    ;;
>  
>  knetbsd*-gnu)
> @@ -2613,7 +2633,7 @@
>  # This must be Linux ELF.
>  linux*)
>    case $host_cpu in
> -  alpha*|hppa*|i*86|ia64*|m68*|mips*|powerpc*|sparc*|s390*|sh*)
> +  alpha*|hppa*|i*86|ia64*|m68*|mips*|powerpc*|sparc*|s390*|sh*|x86_64*)
>      lt_cv_deplibs_check_method=pass_all ;;
>    *)
>      # glibc up to 2.1.1 does not perform some relocations on ARM
> 
> 
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-- 
albert chin (address@hidden)