Merge commit 'refs/top-bases/t/bigmem' into t/bigmem

1 files changed, 87 insertions, 0 deletions

diff --git a/sysdeps/nptl/configure b/sysdeps/nptl/configure
new file mode 100644
index 0000000000..cce07b35d2
--- /dev/null
+++ b/sysdeps/nptl/configure
@@ -0,0 +1,87 @@
+# This file is generated from configure.ac by Autoconf.  DO NOT EDIT!
+
+if test "x$libc_cv_gcc___thread" != xyes; then
+  as_fn_error $? "compiler support for __thread is required" "$LINENO" 5
+fi
+
+if test "x${libc_cv_visibility_attribute}" != xyes ||
+   test "x${libc_cv_broken_visibility_attribute}" != xno; then
+  as_fn_error $? "working compiler support for visibility attribute is required" "$LINENO" 5
+fi
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for forced unwind support" >&5
+$as_echo_n "checking for forced unwind support... " >&6; }
+if ${libc_cv_forced_unwind+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  old_CPPFLAGS="$CPPFLAGS"
+# Without inhibit_libc #define'd, GCC's unwind.h (at least for ia64)
+# will try to include <stdlib.h>, which doesn't exist yet if we're
+# building libc in a bare environment.
+CPPFLAGS="$CPPFLAGS -Dinhibit_libc=1"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <unwind.h>
+int
+main ()
+{
+
+struct _Unwind_Exception exc;
+struct _Unwind_Context *context;
+_Unwind_GetCFA (context)
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  libc_cv_forced_unwind=yes
+else
+  libc_cv_forced_unwind=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+CPPFLAGS="$old_CPPFLAGS"
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_forced_unwind" >&5
+$as_echo "$libc_cv_forced_unwind" >&6; }
+if test $libc_cv_forced_unwind = yes; then
+  $as_echo "#define HAVE_FORCED_UNWIND 1" >>confdefs.h
+
+  old_CFLAGS="$CFLAGS"
+  CFLAGS="$CFLAGS -Werror -fexceptions"
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for C cleanup handling" >&5
+$as_echo_n "checking for C cleanup handling... " >&6; }
+if ${libc_cv_c_cleanup+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+extern void some_function (void);
+void cl (void *a) { }
+int
+main ()
+{
+
+  int a __attribute__ ((cleanup (cl)));
+  some_function ()
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  libc_cv_c_cleanup=yes
+else
+  libc_cv_c_cleanup=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_c_cleanup" >&5
+$as_echo "$libc_cv_c_cleanup" >&6; }
+  CFLAGS="$old_CFLAGS"
+  if test $libc_cv_c_cleanup = no; then
+    as_fn_error $? "the compiler must support C cleanup handling" "$LINENO" 5
+  fi
+else
+  as_fn_error $? "forced unwind support is required" "$LINENO" 5
+fi