Remove bitrotten --enable-oldest-abi (bug 6652).

This patch removes the --enable-oldest-abi configure option, which has
long been bitrotten (as reported in bug 6652).  The principle of
removing this option was agreed in the thread starting at
<https://sourceware.org/ml/libc-alpha/2013-07/msg00174.html>.

Tested for x86_64 and x86 that the installed shared libraries other
than libc.so are unchanged by this patch and that libc.so disassembly
and symbol versions are unchanged (debug info changes because of
changed line numbers in csu/version.c).

	[BZ #6652]
	* Makeconfig (soversions-default-setname): Remove variable.
	($(common-objpfx)soversions.i): Don't pass default_setname to
	soversions.awk.
	* Makerules ($(common-objpfx)abi-versions.h): Don't pass
	oldest_abi to abi-versions.awk.
	* config.h.in (GLIBC_OLDEST_ABI): Remove macro undefine.
	* config.make.in (oldest-abi): Remove variable.
	* configure.ac (--enable-oldest-abi): Remove configure option.
	* configure: Regenerated.
	* csu/version.c (banner) [GLIBC_OLDEST_ABI]: Remove conditional
	text.
	* scripts/abi-versions.awk: Do not handle oldest_abi variable.
	* scripts/soversions.awk: Do not handle default_setname variable.
	* sysdeps/mach/hurd/configure.ac: Do not handle oldest_abi
	variable.
	* sysdeps/mach/hurd/configure: Regenerated.
	* sysdeps/unix/sysv/linux/configure.ac: Do not handle oldest_abi
	variable.
	* sysdeps/unix/sysv/linux/configure: Regenerated.

4 files changed, 0 insertions, 32 deletions

diff --git a/sysdeps/mach/hurd/configure b/sysdeps/mach/hurd/configure
index 21999f7..4248758 100644
--- a/sysdeps/mach/hurd/configure
+++ b/sysdeps/mach/hurd/configure
@@ -3,16 +3,6 @@
 $as_echo "#define NO_HIDDEN 1" >>confdefs.h
 
 
-case "$machine" in
-  i386*)
-    # The default oldest ABI is 2.2.6.
-    # We only need a "yes" here if the oldest ABI supported will be < 2.2.6.
-    if test "$oldest_abi" != default && test "$oldest_abi" \< "2.2.6"; then
-      libc_cv_gcc_unwind_find_fde=yes
-    fi
-    ;;
-esac
-
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking Hurd header version" >&5
 $as_echo_n "checking Hurd header version... " >&6; }
diff --git a/sysdeps/mach/hurd/configure.ac b/sysdeps/mach/hurd/configure.ac
index 40b0743..b1f16a5 100644
--- a/sysdeps/mach/hurd/configure.ac
+++ b/sysdeps/mach/hurd/configure.ac
@@ -3,16 +3,6 @@ GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
 dnl We need this setting because of the need for PLT calls in ld.so.
 AC_DEFINE([NO_HIDDEN])
 
-case "$machine" in
-  i386*)
-    # The default oldest ABI is 2.2.6.
-    # We only need a "yes" here if the oldest ABI supported will be < 2.2.6.
-    if test "$oldest_abi" != default && test "$oldest_abi" \< "2.2.6"; then
-      libc_cv_gcc_unwind_find_fde=yes
-    fi
-    ;;
-esac
-
 AC_CACHE_CHECK(Hurd header version, libc_cv_hurd_version, [dnl
 AC_TRY_COMPILE(dnl
 [#include <hurd/version.h>], [
diff --git a/sysdeps/unix/sysv/linux/configure b/sysdeps/unix/sysv/linux/configure
index 7825ff6..ef9d425 100644
--- a/sysdeps/unix/sysv/linux/configure
+++ b/sysdeps/unix/sysv/linux/configure
@@ -148,12 +148,6 @@ fi
 
 
 
-# The result of the above test for the use of the FDE code is invalid if
-# the user overrides the decision about the minimum ABI.
-if test "$oldest_abi" != default && test "2.2.4" \< "$oldest_abi"; then
-  libc_cv_gcc_unwind_find_fde=no
-fi
-
 if test -n "$sysheaders"; then
   CPPFLAGS=$OLD_CPPFLAGS
 fi
diff --git a/sysdeps/unix/sysv/linux/configure.ac b/sysdeps/unix/sysv/linux/configure.ac
index f207c26..6738e2d 100644
--- a/sysdeps/unix/sysv/linux/configure.ac
+++ b/sysdeps/unix/sysv/linux/configure.ac
@@ -71,12 +71,6 @@ AC_CHECK_HEADER(linux/fanotify.h,
   [AC_DEFINE(HAVE_LINUX_FANOTIFY_H)], ,
   [/* No default includes.  */])
 
-# The result of the above test for the use of the FDE code is invalid if
-# the user overrides the decision about the minimum ABI.
-if test "$oldest_abi" != default && test "2.2.4" \< "$oldest_abi"; then
-  libc_cv_gcc_unwind_find_fde=no
-fi
-
 if test -n "$sysheaders"; then
   CPPFLAGS=$OLD_CPPFLAGS
 fi