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diff --git a/gnu/signal.in.h b/gnu/signal.in.h
index 87f7471b..265b72ab 100644
--- a/gnu/signal.in.h
+++ b/gnu/signal.in.h
@@ -1,8 +1,6 @@
-/* -*- buffer-read-only: t -*- vi: set ro: */
-/* DO NOT EDIT! GENERATED AUTOMATICALLY! */
 /* A GNU-like <signal.h>.
 
-   Copyright (C) 2006-2013 Free Software Foundation, Inc.
+   Copyright (C) 2006-2015 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -57,11 +55,13 @@
 #ifndef _@GUARD_PREFIX@_SIGNAL_H
 #define _@GUARD_PREFIX@_SIGNAL_H
 
-/* Mac OS X 10.3, FreeBSD 6.4, OpenBSD 3.8, OSF/1 4.0, Solaris 2.6 declare
-   pthread_sigmask in <pthread.h>, not in <signal.h>.
+/* Mac OS X 10.3, FreeBSD 6.4, OpenBSD 3.8, OSF/1 4.0, Solaris 2.6, Android
+   declare pthread_sigmask in <pthread.h>, not in <signal.h>.
    But avoid namespace pollution on glibc systems.*/
 #if (@GNULIB_PTHREAD_SIGMASK@ || defined GNULIB_POSIXCHECK) \
-    && ((defined __APPLE__ && defined __MACH__) || defined __FreeBSD__ || defined __OpenBSD__ || defined __osf__ || defined __sun) \
+    && ((defined __APPLE__ && defined __MACH__) \
+        || defined __FreeBSD__ || defined __OpenBSD__ || defined __osf__ \
+        || defined __sun || defined __ANDROID__) \
     && ! defined __GLIBC__
 # include <pthread.h>
 #endif
@@ -197,6 +197,20 @@ typedef int verify_NSIG_constraint[NSIG <= 32 ? 1 : -1];
 
 # endif
 
+/* When also using extern inline, suppress the use of static inline in
+   standard headers of problematic Apple configurations, as Libc at
+   least through Libc-825.26 (2013-04-09) mishandles it; see, e.g.,
+   <http://lists.gnu.org/archive/html/bug-gnulib/2012-12/msg00023.html>.
+   Perhaps Apple will fix this some day.  */
+#if (defined _GL_EXTERN_INLINE_IN_USE && defined __APPLE__ \
+     && (defined __i386__ || defined __x86_64__))
+# undef sigaddset
+# undef sigdelset
+# undef sigemptyset
+# undef sigfillset
+# undef sigismember
+#endif
+
 /* Test whether a given signal is contained in a signal set.  */
 # if @HAVE_POSIX_SIGNALBLOCKING@
 /* This function is defined as a macro on Mac OS X.  */