--- a/gcc/config/gnu-user.h	Sun Aug 21 07:07:55 2011 +0900
+++ b/gcc/config/gnu-user.h	Fri Oct 27 22:46:09 2017 +0900
@@ -1,8 +1,7 @@
 /* Definitions for systems using, at least optionally, a GNU
    (glibc-based) userspace or other userspace with libc derived from
    glibc (e.g. uClibc) or for which similar specs are appropriate.
-   Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2003, 2004, 2005, 2006,
-   2007, 2009, 2010, 2011 Free Software Foundation, Inc.
+   Copyright (C) 1995-2017 Free Software Foundation, Inc.
    Contributed by Eric Youngdale.
    Modified for stabs-in-ELF by H.J. Lu (hjl@lucon.org).
 
@@ -36,19 +35,47 @@
 #undef ASM_APP_OFF
 #define ASM_APP_OFF "#NO_APP\n"
 
+#if ENABLE_OFFLOADING == 1
+#define CRTOFFLOADBEGIN "%{fopenacc|fopenmp:crtoffloadbegin%O%s}"
+#define CRTOFFLOADEND "%{fopenacc|fopenmp:crtoffloadend%O%s}"
+#else
+#define CRTOFFLOADBEGIN ""
+#define CRTOFFLOADEND ""
+#endif
+
 /* Provide a STARTFILE_SPEC appropriate for GNU userspace.  Here we add
    the GNU userspace magical crtbegin.o file (see crtstuff.c) which
    provides part of the support for getting C++ file-scope static
    object constructed before entering `main'.  */
-   
+
 #if defined HAVE_LD_PIE
 #define GNU_USER_TARGET_STARTFILE_SPEC \
-  "%{!shared: %{pg|p|profile:gcrt1.o%s;pie:Scrt1.o%s;:crt1.o%s}} \
-   crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
+  "%{shared:; \
+     pg|p|profile:gcrt1.o%s; \
+     static:crt1.o%s; \
+     static-pie|" PIE_SPEC ":Scrt1.o%s; \
+     :crt1.o%s} \
+   crti.o%s \
+   %{static:crtbeginT.o%s; \
+     shared|static-pie|" PIE_SPEC ":crtbeginS.o%s; \
+     :crtbegin.o%s} \
+   %{fvtable-verify=none:%s; \
+     fvtable-verify=preinit:vtv_start_preinit.o%s; \
+     fvtable-verify=std:vtv_start.o%s} \
+   " CRTOFFLOADBEGIN
 #else
 #define GNU_USER_TARGET_STARTFILE_SPEC \
-  "%{!shared: %{pg|p|profile:gcrt1.o%s;:crt1.o%s}} \
-   crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
+  "%{shared:; \
+     pg|p|profile:gcrt1.o%s; \
+     :crt1.o%s} \
+   crti.o%s \
+   %{static:crtbeginT.o%s; \
+     shared|pie|static-pie:crtbeginS.o%s; \
+     :crtbegin.o%s} \
+   %{fvtable-verify=none:%s; \
+     fvtable-verify=preinit:vtv_start_preinit.o%s; \
+     fvtable-verify=std:vtv_start.o%s} \
+   " CRTOFFLOADBEGIN
 #endif
 #undef  STARTFILE_SPEC
 #define STARTFILE_SPEC GNU_USER_TARGET_STARTFILE_SPEC
@@ -59,8 +86,27 @@
    object constructed before entering `main', followed by a normal
    GNU userspace "finalizer" file, `crtn.o'.  */
 
+#if defined HAVE_LD_PIE
 #define GNU_USER_TARGET_ENDFILE_SPEC \
-  "%{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s"
+  "%{fvtable-verify=none:%s; \
+     fvtable-verify=preinit:vtv_end_preinit.o%s; \
+     fvtable-verify=std:vtv_end.o%s} \
+   %{static:crtend.o%s; \
+     shared|static-pie|" PIE_SPEC ":crtendS.o%s; \
+     :crtend.o%s} \
+   crtn.o%s \
+   " CRTOFFLOADEND
+#else
+#define GNU_USER_TARGET_ENDFILE_SPEC \
+  "%{fvtable-verify=none:%s; \
+     fvtable-verify=preinit:vtv_end_preinit.o%s; \
+     fvtable-verify=std:vtv_end.o%s} \
+   %{static:crtend.o%s; \
+     shared|pie|static-pie:crtendS.o%s; \
+     :crtend.o%s} \
+   crtn.o%s \
+   " CRTOFFLOADEND
+#endif
 #undef  ENDFILE_SPEC
 #define ENDFILE_SPEC GNU_USER_TARGET_ENDFILE_SPEC
 
@@ -74,20 +120,25 @@
 #undef CPLUSPLUS_CPP_SPEC
 #define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"
 
+#define GNU_USER_TARGET_NO_PTHREADS_LIB_SPEC \
+  "%{shared:-lc} \
+   %{!shared:%{mieee-fp:-lieee} %{profile:-lc_p}%{!profile:-lc}}"
+
 #define GNU_USER_TARGET_LIB_SPEC \
-  "%{pthread:-lpthread} \
-   %{shared:-lc} \
-   %{!shared:%{mieee-fp:-lieee} %{profile:-lc_p}%{!profile:-lc}}"
+  "%{pthread:-lpthread} " \
+  GNU_USER_TARGET_NO_PTHREADS_LIB_SPEC
+
 #undef  LIB_SPEC
 #define LIB_SPEC GNU_USER_TARGET_LIB_SPEC
 
 #if defined(HAVE_LD_EH_FRAME_HDR)
-#define LINK_EH_SPEC "%{!static:--eh-frame-hdr} "
+#define LINK_EH_SPEC "%{!static|static-pie:--eh-frame-hdr} "
 #endif
 
 #undef LINK_GCC_C_SEQUENCE_SPEC
 #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
@@ -95,3 +146,29 @@
 #endif
 
 #define TARGET_POSIX_IO
+
+#undef TARGET_LIBC_HAS_FUNCTION
+#define TARGET_LIBC_HAS_FUNCTION gnu_libc_has_function
+
+/* Link -lasan early on the command line.  For -static-libasan, don't link
+   it for -shared link, the executable should be compiled with -static-libasan
+   in that case, and for executable link with --{,no-}whole-archive around
+   it to force everything into the executable.  And similarly for -ltsan
+   and -llsan.  */
+#if defined(HAVE_LD_STATIC_DYNAMIC)
+#undef LIBASAN_EARLY_SPEC
+#define LIBASAN_EARLY_SPEC "%{!shared:libasan_preinit%O%s} " \
+  "%{static-libasan:%{!shared:" \
+  LD_STATIC_OPTION " --whole-archive -lasan --no-whole-archive " \
+  LD_DYNAMIC_OPTION "}}%{!static-libasan:-lasan}"
+#undef LIBTSAN_EARLY_SPEC
+#define LIBTSAN_EARLY_SPEC "%{!shared:libtsan_preinit%O%s} " \
+  "%{static-libtsan:%{!shared:" \
+  LD_STATIC_OPTION " --whole-archive -ltsan --no-whole-archive " \
+  LD_DYNAMIC_OPTION "}}%{!static-libtsan:-ltsan}"
+#undef LIBLSAN_EARLY_SPEC
+#define LIBLSAN_EARLY_SPEC "%{!shared:liblsan_preinit%O%s} " \
+  "%{static-liblsan:%{!shared:" \
+  LD_STATIC_OPTION " --whole-archive -llsan --no-whole-archive " \
+  LD_DYNAMIC_OPTION "}}%{!static-liblsan:-llsan}"
+#endif