--- a/gcc/config/alpha/linux.h	Sun Aug 21 07:07:55 2011 +0900
+++ b/gcc/config/alpha/linux.h	Fri Oct 27 22:46:09 2017 +0900
@@ -1,7 +1,6 @@
 /* Definitions of target machine for GNU compiler,
    for Alpha Linux-based GNU systems.
-   Copyright (C) 1996, 1997, 1998, 2002, 2003, 2004, 2005, 2006, 2007, 2009,
-   2010 Free Software Foundation, Inc.
+   Copyright (C) 1996-2017 Free Software Foundation, Inc.
    Contributed by Richard Henderson.
 
 This file is part of GCC.
@@ -20,9 +19,6 @@
 along with GCC; see the file COPYING3.  If not see
 <http://www.gnu.org/licenses/>.  */
 
-#undef TARGET_DEFAULT
-#define TARGET_DEFAULT (MASK_FPREGS | MASK_GAS)
-
 #define TARGET_OS_CPP_BUILTINS()				\
     do {							\
 	builtin_define ("__gnu_linux__");			\
@@ -63,29 +59,34 @@
 
 #ifdef SINGLE_LIBC
 #define OPTION_GLIBC  (DEFAULT_LIBC == LIBC_GLIBC)
+#define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
+#define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
+#undef OPTION_MUSL
+#define OPTION_MUSL   (DEFAULT_LIBC == LIBC_MUSL)
 #else
 #define OPTION_GLIBC  (linux_libc == LIBC_GLIBC)
+#define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
+#define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
+#undef OPTION_MUSL
+#define OPTION_MUSL   (linux_libc == LIBC_MUSL)
 #endif
 
-/* Determine whether the entire c99 runtime is present in the
-   runtime library.  */
-#define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
-
-/* Whether we have sincos that follows the GNU extension.  */
-#define TARGET_HAS_SINCOS (OPTION_GLIBC)
+/* Determine what functions are present at the runtime;
+   this includes full c99 runtime and sincos.  */
+#undef TARGET_LIBC_HAS_FUNCTION
+#define TARGET_LIBC_HAS_FUNCTION linux_libc_has_function
 
 #define TARGET_POSIX_IO
 
 #define LINK_GCC_C_SEQUENCE_SPEC \
-  "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}"
+  "%{static|static-pie:--start-group} %G %L \
+   %{static|static-pie:--end-group}%{!static:%{!static-pie:%G}}"
 
 /* Use --as-needed -lgcc_s for eh support.  */
 #ifdef HAVE_LD_AS_NEEDED
 #define USE_LD_AS_NEEDED 1
 #endif
 
-#define MD_UNWIND_SUPPORT "config/alpha/linux-unwind.h"
-
 /* Define if long doubles should be mangled as 'g'.  */
 #define TARGET_ALTERNATE_LONG_DOUBLE_MANGLING