Re: RFA/RFC: Enable both gold and ld in a single toolchain

[Nick Clifton <nickc at redhat dot com>]

Hi Guys,

  Now that the GCC mainline sources are back in stage 1, and I am back 
from vacation, here is another revised version of the gold-and-ld patch 
for consideration, and I hope, approval.

  This version fixes collect2.c so that it will build even if the 
DEFAULT_LINKER environment variable is defined.  It also changes the 
name of the installed version of the gold linker to be ld.gold in order 
to use a consistent naming scheme.

  OK to apply ?

Cheers
  Nick

./ChangeLog
2010-04-09  Roland McGrath  <roland@redhat.com>
        H.J. Lu  <hongjiu.lu@intel.com>

    * configure.ac (--enable-gold): Support both, both/gold and
    both/bfd to add gold to configdirs without removing ld.
    * configure: Regenerated.

gold/ChangeLog
2010-04-09  H.J. Lu  <hongjiu.lu@intel.com>
        Nick Clifton  <nickc@redhat.com>

    * configure.ac (install_as_default): Define and set to false
    unless --enable-gold or --enable-gold=both/gold has been
    specified.
    * configure: Regenerate.
    * Makefile.am (install-exec-local): Install the executable as
    'ld.gold'.  If install_as_default is true then also install it as
    'ld'.
    * Makefile.in: Regenerated.

ld/ChangeLog
2010-04-09  H.J. Lu  <hongjiu.lu@intel.com>
        Nick Clifton  <nickc@redhat.com>

    * configure.in (install_as_default): Define and set to true
    unless --enable-gold=both/gold has been specified.
    * configure: Regenerate.
    * Makefile.am (transform): Use ld.bfd as the default name of
    the linker.
    (install-exec-local): Also install the executable as a binary
    named 'ld' if install_as_default is true.
    * Makefile.in: Regenerate.

gcc/ChangeLog
2010-04-09  Nick Clifton  <nickc@redhat.com>

    * configure.ac (gcc_cv_gold_srcdir): New cached variable -
    contains the location of the gold sources.
    (ORIGINAL_GOLD_FOR_TARGET): New substituted variable - contains
    the name of the locally built gold executable.
    * configure: Regenerate.
    * collect2.c (main): Detect the -use-gold and -use-ld switches
    and select the appropriate linker, if found.
    If a linker cannot be found and collect2 is executing in
    verbose mode then report the search paths examined.
    * exec-tool.in: Detect the -use-gold and -use-ld switches and
    select the appropriate linker, if found.
    Add support for -v switch.
    Report problems locating linker executable.
    * gcc.c (LINK_COMMAND_SPEC): Translate -fuse-ld=gold into
    -use-gold and -fuse-ld=bfd into -use-ld.
    * common.opt: Add fuse-ld=gold and fuse-ld=bfd.
    * opts.c (comman_handle_option): Ignore -fuse-ld=gold and
    -fuse-ld=bfd.
    * doc/invoke.texi: Document the new options.

Attachment: gold-and-ld.patch.5
Description: Unix manual page