dnl
dnl Check if the linker used supports linker maps to clear hardware
dnl capabilities.  This is only supported on Solaris at the moment.
dnl
dnl Defines:
dnl  HWCAP_LDFLAGS=-mclear-hwcap if possible
dnl  LD (as a side effect of testing)
dnl
AC_DEFUN([GCC_CHECK_LINKER_HWCAP], [
  test -z "$HWCAP_LDFLAGS" && HWCAP_LDFLAGS=''
  AC_REQUIRE([AC_PROG_LD])

  ac_save_LDFLAGS="$LDFLAGS"
  LDFLAGS="$LFLAGS -mclear-hwcap"

  AC_MSG_CHECKING([for -mclear-hwcap])
  AC_TRY_LINK([], [return 0;], [ac_hwcap_ldflags=yes],[ac_hwcap_ldflags=no])
  if test "$ac_hwcap_ldflags" = "yes"; then
    HWCAP_LDFLAGS="-mclear-hwcap $HWCAP_LDFLAGS"
  fi
  AC_MSG_RESULT($ac_hwcap_ldflags)

  LDFLAGS="$ac_save_LDFLAGS"

  AC_SUBST(HWCAP_LDFLAGS)

  AM_CONDITIONAL(HAVE_HWCAP, test $ac_hwcap_ldflags != no)
])