Update copyright years.

[thirdparty/gcc.git] / libatomic / configure.ac

diff --git a/libatomic/configure.ac b/libatomic/configure.ac
index bf7315e78d1b6c3cc26c7fd598e89fe829199418..dc297f4050a3bed22dfbb8e73b27fd1d0476eabe 100644 (file)
--- a/libatomic/configure.ac
+++ b/libatomic/configure.ac
@@ -1,5 +1,5 @@
 # Process this file with autoreconf to produce a configure script.
-#  Copyright (C) 2012-2017 Free Software Foundation, Inc.
+#  Copyright (C) 2012-2020 Free Software Foundation, Inc.
 #
 #  This file is part of the GNU Atomic Library (libatomic).
 #
@@ -22,7 +22,6 @@
 #  see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 #  <http://www.gnu.org/licenses/>.
 
-AC_PREREQ(2.59)
 AC_INIT([GNU Atomic Library], 1.0,,[libatomic])
 AC_CONFIG_HEADER(auto-config.h)
 
@@ -157,12 +156,22 @@ AC_MSG_CHECKING([for thread model used by GCC])
 target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
 AC_MSG_RESULT([$target_thread_file])
 
+case "$target" in
+ *aarch64*)
+    ACX_PROG_CC_WARNING_OPTS([-march=armv8-a+lse],[enable_aarch64_lse])
+    ;;
+esac
+
 # Get target configury.
 . ${srcdir}/configure.tgt
 if test -n "$UNSUPPORTED"; then
   AC_MSG_ERROR([Configuration ${target} is unsupported.])
 fi
 
+# Write out the ifunc resolver arg type.
+AC_DEFINE_UNQUOTED(IFUNC_RESOLVER_ARGS, $IFUNC_RESOLVER_ARGS,
+       [Define ifunc resolver function argument.])
+
 # Disable fallbacks to __sync routines from libgcc.  Otherwise we'll
 # make silly decisions about what the cpu can do.
 CFLAGS="$save_CFLAGS -fno-sync-libcalls $XCFLAGS"
@@ -251,6 +260,8 @@ AC_SUBST(LIBS)
 AC_SUBST(SIZES)
 
 AM_CONDITIONAL(HAVE_IFUNC, test x$libat_cv_have_ifunc = xyes)
+AM_CONDITIONAL(ARCH_AARCH64_LINUX,
+              [expr "$config_path" : ".* linux/aarch64 .*" > /dev/null])
 AM_CONDITIONAL(ARCH_ARM_LINUX,
               [expr "$config_path" : ".* linux/arm .*" > /dev/null])
 AM_CONDITIONAL(ARCH_I386,