[PATCH, build]: Enable default_gnu_indirect_function on x86_64-*-linux*

[Uros Bizjak]

Hello!

Fixing ifunc test function in the testsuite uncovered a nasty screwup
in config.gcc that prohibited usage of GNU indirect functions on
x86_64-*-linux*. Fixed by mirroring i[34567]86-*-linux* setting.

2011-07-22  Uros Bizjak  <ubiz...@gmail.com>

        * config.gcc (i[34567]86-*-linux*): Set
        default_gnu_indirect_function to yes.

Bootstrapped and regression tested on x86_64-pc-linux-gnu {,-m32}.
Committed to mainline, will commit to 4.6 after regression tests
finish there.

Uros.

Index: config.gcc
===================================================================
--- config.gcc  (revision 176624)
+++ config.gcc  (working copy)
@@ -1327,8 +1327,10 @@
                 i386/x86-64.h i386/gnu-user64.h"
        case ${target} in
        x86_64-*-linux*)
-         tm_file="${tm_file} linux.h i386/linux64.h"
-         default_gnu_indirect_function=glibc-2011 ;;
+               tm_file="${tm_file} linux.h i386/linux64.h"
+               # Assume modern glibc
+               default_gnu_indirect_function=yes
+               ;;
        x86_64-*-kfreebsd*-gnu) tm_file="${tm_file} kfreebsd-gnu.h 
i386/kfreebsd-gnu64.h" ;;
        x86_64-*-knetbsd*-gnu) tm_file="${tm_file} knetbsd-gnu.h" ;;
        esac