Fix hurd build with hidden support

* hurd/sigunwind.c (_hurdsig_longjmp_from_handler): Destroy reply port
	of interrupted RPC instead of restoring it.

	* sysdeps/i386/setjmp.S (__sigsetjmp): Add hidden_def.
	* sysdeps/mach/hurd/accept4.c (__libc_accept4): Remove
	libc_hidden_def.
	* sysdeps/mach/hurd/dl-sysdep.c (__libc_stack_end): Add relro
	attribute, define rtld_hidden_data_def.
	* sysdeps/mach/hurd/fxstatat64.c (__fxstatat64): Add libc_hidden_def.
	* sysdeps/mach/hurd/if_index.c (__if_freenameindex): Add
	libc_hidden_def.
	(if_freenameindex): Add libc_hidden_weak.
	(if_nameindex): Add libc_hidden_weak.
	* sysdeps/mach/hurd/open.c (_open64): Rename libc_hidden_weak into
	__open64.
	* sysdeps/mach/hurd/sigwait.c (__sigwait): Add libc_hidden_def.
	* sysdeps/mach/hurd/xmknodat.c (__xmknodat): Add libc_hidden_def.
	* sysdeps/mach/nanosleep.c: Include <time.h>
	(__nanosleep): Rename to __libc_nanosleep.
	(__nanosleep): Add weak_alias.
	(nanosleep): Update alias.
	* sysdeps/mach/hurd/configure.ac (NO_HIDDEN): Do not define.
	* sysdeps/mach/hurd/configure: Regenerate.

ChangeLog

@@ -3,6 +3,27 @@
 	* hurd/sigunwind.c (_hurdsig_longjmp_from_handler): Destroy reply port
 	of interrupted RPC instead of restoring it.
 
+	* sysdeps/i386/setjmp.S (__sigsetjmp): Add hidden_def.
+	* sysdeps/mach/hurd/accept4.c (__libc_accept4): Remove
+	libc_hidden_def.
+	* sysdeps/mach/hurd/dl-sysdep.c (__libc_stack_end): Add relro
+	attribute, define rtld_hidden_data_def.
+	* sysdeps/mach/hurd/fxstatat64.c (__fxstatat64): Add libc_hidden_def.
+	* sysdeps/mach/hurd/if_index.c (__if_freenameindex): Add
+	libc_hidden_def.
+	(if_freenameindex): Add libc_hidden_weak.
+	(if_nameindex): Add libc_hidden_weak.
+	* sysdeps/mach/hurd/open.c (_open64): Rename libc_hidden_weak into
+	__open64.
+	* sysdeps/mach/hurd/sigwait.c (__sigwait): Add libc_hidden_def.
+	* sysdeps/mach/hurd/xmknodat.c (__xmknodat): Add libc_hidden_def.
+	* sysdeps/mach/nanosleep.c: Include <time.h>
+	(__nanosleep): Rename to __libc_nanosleep.
+	(__nanosleep): Add weak_alias.
+	(nanosleep): Update alias.
+	* sysdeps/mach/hurd/configure.ac (NO_HIDDEN): Do not define.
+	* sysdeps/mach/hurd/configure: Regenerate.
+
 2015-11-24  Joseph Myers  <joseph@codesourcery.com>
 
 	* stdlib/strtod_nan.c: New file.

sysdeps/i386/setjmp.S

@@ -55,3 +55,4 @@ ENTRY (__sigsetjmp)
 	jmp __sigjmp_save
 #endif
 END (__sigsetjmp)
+hidden_def (__sigsetjmp)

sysdeps/mach/hurd/accept4.c

@@ -95,5 +95,4 @@ __libc_accept4 (int fd, __SOCKADDR_ARG addrarg, socklen_t *addr_len, int flags)
 
   return _hurd_intern_fd (new, O_IGNORE_CTTY | flags, 1);
 }
-libc_hidden_def (__libc_accept4)
 weak_alias (__libc_accept4, accept4)

sysdeps/mach/hurd/configure

@@ -1,8 +1,5 @@
 # This file is generated from configure.ac by Autoconf.  DO NOT EDIT!
 
-$as_echo "#define NO_HIDDEN 1" >>confdefs.h
-
-
 if test -n "$sysheaders"; then
   OLD_CPPFLAGS=$CPPFLAGS
   CPPFLAGS="$CPPFLAGS $SYSINCLUDES"

sysdeps/mach/hurd/configure.ac

@@ -1,8 +1,5 @@
 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])
-
 if test -n "$sysheaders"; then
   OLD_CPPFLAGS=$CPPFLAGS
   CPPFLAGS="$CPPFLAGS $SYSINCLUDES"

sysdeps/mach/hurd/dl-sysdep.c

@@ -55,7 +55,8 @@ rtld_hidden_data_def (__libc_enable_secure)
 int __libc_multiple_libcs = 0;	/* Defining this here avoids the inclusion
 				   of init-first.  */
 /* This variable contains the lowest stack address ever used.  */
-void *__libc_stack_end;
+void *__libc_stack_end attribute_relro = NULL;
+rtld_hidden_data_def(__libc_stack_end)
 
 #if HP_TIMING_AVAIL
 hp_timing_t _dl_cpuclock_offset;

sysdeps/mach/hurd/fxstatat64.c

@@ -43,3 +43,4 @@ __fxstatat64 (int vers, int fd, const char *filename, struct stat64 *buf,
 
   return __hurd_fail (err);
 }
+libc_hidden_def (__fxstatat64)

sysdeps/mach/hurd/if_index.c

@@ -65,7 +65,9 @@ __if_freenameindex (struct if_nameindex *ifn)
     }
   free (ifn);
 }
+libc_hidden_def (__if_freenameindex)
 weak_alias (__if_freenameindex, if_freenameindex)
+libc_hidden_weak (if_freenameindex)
 
 /* Return an array of if_nameindex structures, one for each network
    interface present, plus one indicating the end of the array.  On
@@ -152,6 +154,7 @@ __if_nameindex (void)
   return idx;
 }
 weak_alias (__if_nameindex, if_nameindex)
+libc_hidden_weak (if_nameindex)
 
 /* Store the name of the interface corresponding to index IFINDEX in
    IFNAME (which has space for at least IFNAMSIZ characters).  Return

sysdeps/mach/hurd/open.c

@@ -56,5 +56,5 @@ weak_alias (__libc_open, open)
 /* open64 is just the same as open for us.  */
 weak_alias (__libc_open, __libc_open64)
 weak_alias (__libc_open, __open64)
-libc_hidden_weak (_open64)
+libc_hidden_weak (__open64)
 weak_alias (__libc_open, open64)

sysdeps/mach/hurd/sigwait.c

@@ -129,4 +129,5 @@ all_done:
   return 0;
 }
 
+libc_hidden_def (__sigwait)
 weak_alias (__sigwait, sigwait)

sysdeps/mach/hurd/xmknodat.c

@@ -115,3 +115,5 @@ __xmknodat (int vers, int fd, const char *path, mode_t mode, dev_t *dev)
     return __hurd_fail (err);
   return 0;
 }
+
+libc_hidden_def (__xmknodat)

sysdeps/mach/nanosleep.c

@@ -19,10 +19,11 @@
 #include <errno.h>
 #include <mach.h>
 #include <sys/time.h>
+#include <time.h>
 #include <unistd.h>
 
 int
-__nanosleep (const struct timespec *requested_time,
+__libc_nanosleep (const struct timespec *requested_time,
 	     struct timespec *remaining)
 {
   mach_port_t recv;
@@ -64,5 +65,6 @@ __nanosleep (const struct timespec *requested_time,
 
   return 0;
 }
+weak_alias(__libc_nanosleep, __nanosleep)
 libc_hidden_def (__nanosleep)
-weak_alias (__nanosleep, nanosleep)
+weak_alias (__libc_nanosleep, nanosleep)