From 2b261fe6eab61b0b312836c08c6aa084afe9d0ec Mon Sep 17 00:00:00 2001
From: Simon Josefsson <simon@josefsson.org>
Date: Fri, 28 Aug 2009 17:55:23 +0200
Subject: Update gnulib files.

---
 gl/Makefile.am                      | 94 ++++++++++++++++++++-----------------
 gl/m4/gnulib-comp.m4                |  1 +
 gl/m4/stdlib_h.m4                   |  4 +-
 gl/m4/sys_socket_h.m4               |  4 +-
 gl/m4/unistd_h.m4                   |  6 ++-
 gl/progname.c                       |  8 ++++
 gl/stdlib.in.h                      | 25 ++++++++++
 gl/sys_socket.in.h                  | 27 +++++++++++
 gl/tests/Makefile.am                |  6 +--
 gl/unistd.in.h                      | 47 ++++++++++++++++++-
 gl/vasnprintf.c                     |  2 +-
 lib/gl/Makefile.am                  | 77 +++++++++++++++++-------------
 lib/gl/m4/stdlib_h.m4               |  4 +-
 lib/gl/m4/sys_socket_h.m4           |  4 +-
 lib/gl/m4/unistd_h.m4               |  6 ++-
 lib/gl/stdlib.in.h                  | 25 ++++++++++
 lib/gl/sys_socket.in.h              | 27 +++++++++++
 lib/gl/tests/test-func.c            |  9 +++-
 lib/gl/unistd.in.h                  | 47 ++++++++++++++++++-
 lib/gl/vasnprintf.c                 |  2 +-
 libextra/gl/override/lib/md5.c.diff |  8 ++--
 21 files changed, 340 insertions(+), 93 deletions(-)

diff --git a/gl/Makefile.am b/gl/Makefile.am
index 10f61377f9..01cf02beae 100644
--- a/gl/Makefile.am
+++ b/gl/Makefile.am
@@ -73,9 +73,10 @@ BUILT_SOURCES += $(ALLOCA_H)
 # We need the following in order to create <alloca.h> when the system
 # doesn't have one that works with the given compiler.
 alloca.h: alloca.in.h
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
 	  cat $(srcdir)/alloca.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv -f $@-t $@
 MOSTLYCLEANFILES += alloca.h alloca.h-t
 
@@ -90,8 +91,8 @@ BUILT_SOURCES += $(ARPA_INET_H)
 # We need the following in order to create <arpa/inet.h> when the system
 # doesn't have one.
 arpa/inet.h: arpa_inet.in.h
-	@MKDIR_P@ arpa
-	rm -f $@-t $@
+	$(AM_V_at)@MKDIR_P@ arpa
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
 	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
@@ -103,7 +104,7 @@ arpa/inet.h: arpa_inet.in.h
 	      -e 's|@''HAVE_DECL_INET_PTON''@|$(HAVE_DECL_INET_PTON)|g' \
 	      -e '/definition of GL_LINK_WARNING/r $(LINK_WARNING_H)' \
 	      < $(srcdir)/arpa_inet.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv $@-t $@
 MOSTLYCLEANFILES += arpa/inet.h arpa/inet.h-t
 MOSTLYCLEANDIRS += arpa
@@ -160,7 +161,7 @@ BUILT_SOURCES += $(ERRNO_H)
 # We need the following in order to create <errno.h> when the system
 # doesn't have one that is POSIX compliant.
 errno.h: errno.in.h
-	rm -f $@-t $@
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
 	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
@@ -172,7 +173,7 @@ errno.h: errno.in.h
 	      -e 's|@''EOVERFLOW_HIDDEN''@|$(EOVERFLOW_HIDDEN)|g' \
 	      -e 's|@''EOVERFLOW_VALUE''@|$(EOVERFLOW_VALUE)|g' \
 	      < $(srcdir)/errno.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv $@-t $@
 MOSTLYCLEANFILES += errno.h errno.h-t
 
@@ -205,13 +206,13 @@ BUILT_SOURCES += $(FLOAT_H)
 # We need the following in order to create <float.h> when the system
 # doesn't have one that works with the given compiler.
 float.h: float.in.h
-	rm -f $@-t $@
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
 	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
 	      -e 's|@''NEXT_FLOAT_H''@|$(NEXT_FLOAT_H)|g' \
 	      < $(srcdir)/float.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv $@-t $@
 MOSTLYCLEANFILES += float.h float.h-t
 
@@ -389,7 +390,7 @@ BUILT_SOURCES += $(NETDB_H)
 # We need the following in order to create <netdb.h> when the system
 # doesn't have one that works with the given compiler.
 netdb.h: netdb.in.h
-	rm -f $@-t $@
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
 	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
@@ -402,7 +403,7 @@ netdb.h: netdb.in.h
 	      -e 's|@''HAVE_DECL_GETADDRINFO''@|$(HAVE_DECL_GETADDRINFO)|g' \
 	      -e 's|@''HAVE_DECL_GETNAMEINFO''@|$(HAVE_DECL_GETNAMEINFO)|g' \
 	      < $(srcdir)/netdb.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv $@-t $@
 MOSTLYCLEANFILES += netdb.h netdb.h-t
 
@@ -417,15 +418,15 @@ BUILT_SOURCES += $(NETINET_IN_H)
 # We need the following in order to create <netinet/in.h> when the system
 # doesn't have one.
 netinet/in.h: netinet_in.in.h
-	@MKDIR_P@ netinet
-	rm -f $@-t $@
+	$(AM_V_at)@MKDIR_P@ netinet
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
 	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
 	      -e 's|@''NEXT_NETINET_IN_H''@|$(NEXT_NETINET_IN_H)|g' \
 	      -e 's|@''HAVE_NETINET_IN_H''@|$(HAVE_NETINET_IN_H)|g' \
 	      < $(srcdir)/netinet_in.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv $@-t $@
 MOSTLYCLEANFILES += netinet/in.h netinet/in.h-t
 MOSTLYCLEANDIRS += netinet
@@ -567,13 +568,13 @@ BUILT_SOURCES += $(STDARG_H)
 # We need the following in order to create <stdarg.h> when the system
 # doesn't have one that works with the given compiler.
 stdarg.h: stdarg.in.h
-	rm -f $@-t $@
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
 	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
 	      -e 's|@''NEXT_STDARG_H''@|$(NEXT_STDARG_H)|g' \
 	      < $(srcdir)/stdarg.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv $@-t $@
 MOSTLYCLEANFILES += stdarg.h stdarg.h-t
 
@@ -588,10 +589,10 @@ BUILT_SOURCES += $(STDBOOL_H)
 # We need the following in order to create <stdbool.h> when the system
 # doesn't have one that works.
 stdbool.h: stdbool.in.h
-	rm -f $@-t $@
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
 	  sed -e 's/@''HAVE__BOOL''@/$(HAVE__BOOL)/g' < $(srcdir)/stdbool.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv $@-t $@
 MOSTLYCLEANFILES += stdbool.h stdbool.h-t
 
@@ -606,7 +607,7 @@ BUILT_SOURCES += $(STDDEF_H)
 # We need the following in order to create <stddef.h> when the system
 # doesn't have one that works with the given compiler.
 stddef.h: stddef.in.h
-	rm -f $@-t $@
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
 	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
@@ -614,7 +615,7 @@ stddef.h: stddef.in.h
 	      -e 's|@''HAVE_WCHAR_T''@|$(HAVE_WCHAR_T)|g' \
 	      -e 's|@''REPLACE_NULL''@|$(REPLACE_NULL)|g' \
 	      < $(srcdir)/stddef.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv $@-t $@
 MOSTLYCLEANFILES += stddef.h stddef.h-t
 
@@ -629,7 +630,7 @@ BUILT_SOURCES += $(STDINT_H)
 # We need the following in order to create <stdint.h> when the system
 # doesn't have one that works with the given compiler.
 stdint.h: stdint.in.h
-	rm -f $@-t $@
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
 	  sed -e 's/@''HAVE_STDINT_H''@/$(HAVE_STDINT_H)/g' \
 	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
@@ -656,7 +657,7 @@ stdint.h: stdint.in.h
 	      -e 's/@''HAVE_SIGNED_WINT_T''@/$(HAVE_SIGNED_WINT_T)/g' \
 	      -e 's/@''WINT_T_SUFFIX''@/$(WINT_T_SUFFIX)/g' \
 	      < $(srcdir)/stdint.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv $@-t $@
 MOSTLYCLEANFILES += stdint.h stdint.h-t
 
@@ -671,7 +672,7 @@ BUILT_SOURCES += stdio.h
 # We need the following in order to create <stdio.h> when the system
 # doesn't have one that works with the given compiler.
 stdio.h: stdio.in.h
-	rm -f $@-t $@
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
 	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
@@ -749,7 +750,7 @@ stdio.h: stdio.in.h
 	      -e 's|@''REPLACE_PERROR''@|$(REPLACE_PERROR)|g' \
 	      -e '/definition of GL_LINK_WARNING/r $(LINK_WARNING_H)' \
 	      < $(srcdir)/stdio.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv $@-t $@
 MOSTLYCLEANFILES += stdio.h stdio.h-t
 
@@ -766,7 +767,7 @@ BUILT_SOURCES += stdlib.h
 # We need the following in order to create <stdlib.h> when the system
 # doesn't have one that works with the given compiler.
 stdlib.h: stdlib.in.h
-	rm -f $@-t $@
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
 	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
@@ -779,6 +780,7 @@ stdlib.h: stdlib.in.h
 	      -e 's|@''GNULIB_GETLOADAVG''@|$(GNULIB_GETLOADAVG)|g' \
 	      -e 's|@''GNULIB_GETSUBOPT''@|$(GNULIB_GETSUBOPT)|g' \
 	      -e 's|@''GNULIB_MKDTEMP''@|$(GNULIB_MKDTEMP)|g' \
+	      -e 's|@''GNULIB_MKOSTEMP''@|$(GNULIB_MKOSTEMP)|g' \
 	      -e 's|@''GNULIB_MKSTEMP''@|$(GNULIB_MKSTEMP)|g' \
 	      -e 's|@''GNULIB_PUTENV''@|$(GNULIB_PUTENV)|g' \
 	      -e 's|@''GNULIB_RANDOM_R''@|$(GNULIB_RANDOM_R)|g' \
@@ -793,6 +795,7 @@ stdlib.h: stdlib.in.h
 	      -e 's|@''HAVE_GETSUBOPT''@|$(HAVE_GETSUBOPT)|g' \
 	      -e 's|@''HAVE_MALLOC_POSIX''@|$(HAVE_MALLOC_POSIX)|g' \
 	      -e 's|@''HAVE_MKDTEMP''@|$(HAVE_MKDTEMP)|g' \
+	      -e 's|@''HAVE_MKOSTEMP''@|$(HAVE_MKOSTEMP)|g' \
 	      -e 's|@''HAVE_REALLOC_POSIX''@|$(HAVE_REALLOC_POSIX)|g' \
 	      -e 's|@''HAVE_RANDOM_R''@|$(HAVE_RANDOM_R)|g' \
 	      -e 's|@''HAVE_RPMATCH''@|$(HAVE_RPMATCH)|g' \
@@ -810,7 +813,7 @@ stdlib.h: stdlib.in.h
 	      -e 's|@''VOID_UNSETENV''@|$(VOID_UNSETENV)|g' \
 	      -e '/definition of GL_LINK_WARNING/r $(LINK_WARNING_H)' \
 	      < $(srcdir)/stdlib.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv $@-t $@
 MOSTLYCLEANFILES += stdlib.h stdlib.h-t
 
@@ -834,7 +837,7 @@ BUILT_SOURCES += string.h
 # We need the following in order to create <string.h> when the system
 # doesn't have one that works with the given compiler.
 string.h: string.in.h
-	rm -f $@-t $@
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
 	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
@@ -899,7 +902,7 @@ string.h: string.in.h
 	      -e 's|@''REPLACE_STRSIGNAL''@|$(REPLACE_STRSIGNAL)|g' \
 	      -e '/definition of GL_LINK_WARNING/r $(LINK_WARNING_H)' \
 	      < $(srcdir)/string.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv $@-t $@
 MOSTLYCLEANFILES += string.h string.h-t
 
@@ -914,8 +917,8 @@ BUILT_SOURCES += $(SYS_SELECT_H)
 # We need the following in order to create <sys/select.h> when the system
 # doesn't have one that works with the given compiler.
 sys/select.h: sys_select.in.h
-	@MKDIR_P@ sys
-	rm -f $@-t $@
+	$(AM_V_at)@MKDIR_P@ sys
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
 	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
@@ -926,7 +929,7 @@ sys/select.h: sys_select.in.h
 	      -e 's|@''REPLACE_SELECT''@|$(REPLACE_SELECT)|g' \
 	      -e '/definition of GL_LINK_WARNING/r $(LINK_WARNING_H)' \
 	      < $(srcdir)/sys_select.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv $@-t $@
 MOSTLYCLEANFILES += sys/select.h sys/select.h-t
 MOSTLYCLEANDIRS += sys
@@ -942,7 +945,8 @@ BUILT_SOURCES += $(SYS_SOCKET_H)
 # We need the following in order to create <sys/socket.h> when the system
 # doesn't have one that works with the given compiler.
 sys/socket.h: sys_socket.in.h
-	@MKDIR_P@ sys
+	$(AM_V_at)@MKDIR_P@ sys
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
 	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
@@ -963,13 +967,15 @@ sys/socket.h: sys_socket.in.h
 	      -e 's|@''GNULIB_SENDTO''@|$(GNULIB_SENDTO)|g' \
 	      -e 's|@''GNULIB_SETSOCKOPT''@|$(GNULIB_SETSOCKOPT)|g' \
 	      -e 's|@''GNULIB_SHUTDOWN''@|$(GNULIB_SHUTDOWN)|g' \
+	      -e 's|@''GNULIB_ACCEPT4''@|$(GNULIB_ACCEPT4)|g' \
 	      -e 's|@''HAVE_WINSOCK2_H''@|$(HAVE_WINSOCK2_H)|g' \
 	      -e 's|@''HAVE_WS2TCPIP_H''@|$(HAVE_WS2TCPIP_H)|g' \
 	      -e 's|@''HAVE_STRUCT_SOCKADDR_STORAGE''@|$(HAVE_STRUCT_SOCKADDR_STORAGE)|g' \
 	      -e 's|@''HAVE_SA_FAMILY_T''@|$(HAVE_SA_FAMILY_T)|g' \
+	      -e 's|@''HAVE_ACCEPT4''@|$(HAVE_ACCEPT4)|g' \
 	      -e '/definition of GL_LINK_WARNING/r $(LINK_WARNING_H)' \
 	      < $(srcdir)/sys_socket.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv -f $@-t $@
 MOSTLYCLEANFILES += sys/socket.h sys/socket.h-t
 MOSTLYCLEANDIRS += sys
@@ -985,8 +991,8 @@ BUILT_SOURCES += $(SYS_STAT_H)
 # We need the following in order to create <sys/stat.h> when the system
 # has one that is incomplete.
 sys/stat.h: sys_stat.in.h
-	@MKDIR_P@ sys
-	rm -f $@-t $@
+	$(AM_V_at)@MKDIR_P@ sys
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
 	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
@@ -999,7 +1005,7 @@ sys/stat.h: sys_stat.in.h
 	      -e 's|@''REPLACE_MKDIR''@|$(REPLACE_MKDIR)|g' \
 	      -e '/definition of GL_LINK_WARNING/r $(LINK_WARNING_H)' \
 	      < $(srcdir)/sys_stat.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv $@-t $@
 MOSTLYCLEANFILES += sys/stat.h sys/stat.h-t
 MOSTLYCLEANDIRS += sys
@@ -1015,8 +1021,8 @@ BUILT_SOURCES += $(SYS_TIME_H)
 # We need the following in order to create <sys/time.h> when the system
 # doesn't have one that works with the given compiler.
 sys/time.h: sys_time.in.h
-	@MKDIR_P@ sys
-	rm -f $@-t $@
+	$(AM_V_at)@MKDIR_P@ sys
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
 	  sed -e 's/@''HAVE_SYS_TIME_H''@/$(HAVE_SYS_TIME_H)/g' \
 	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
@@ -1025,7 +1031,7 @@ sys/time.h: sys_time.in.h
 	      -e 's/@''REPLACE_GETTIMEOFDAY''@/$(REPLACE_GETTIMEOFDAY)/g' \
 	      -e 's/@''HAVE_STRUCT_TIMEVAL''@/$(HAVE_STRUCT_TIMEVAL)/g' \
 	      < $(srcdir)/sys_time.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv $@-t $@
 MOSTLYCLEANFILES += sys/time.h sys/time.h-t
 
@@ -1040,7 +1046,7 @@ BUILT_SOURCES += unistd.h
 # We need the following in order to create an empty placeholder for
 # <unistd.h> when the system doesn't have one.
 unistd.h: unistd.in.h
-	rm -f $@-t $@
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
 	  sed -e 's|@''HAVE_UNISTD_H''@|$(HAVE_UNISTD_H)|g' \
 	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
@@ -1049,6 +1055,7 @@ unistd.h: unistd.in.h
 	      -e 's|@''GNULIB_CHOWN''@|$(GNULIB_CHOWN)|g' \
 	      -e 's|@''GNULIB_CLOSE''@|$(GNULIB_CLOSE)|g' \
 	      -e 's|@''GNULIB_DUP2''@|$(GNULIB_DUP2)|g' \
+	      -e 's|@''GNULIB_DUP3''@|$(GNULIB_DUP3)|g' \
 	      -e 's|@''GNULIB_ENVIRON''@|$(GNULIB_ENVIRON)|g' \
 	      -e 's|@''GNULIB_EUIDACCESS''@|$(GNULIB_EUIDACCESS)|g' \
 	      -e 's|@''GNULIB_FCHDIR''@|$(GNULIB_FCHDIR)|g' \
@@ -1064,12 +1071,14 @@ unistd.h: unistd.in.h
 	      -e 's|@''GNULIB_LCHOWN''@|$(GNULIB_LCHOWN)|g' \
 	      -e 's|@''GNULIB_LINK''@|$(GNULIB_LINK)|g' \
 	      -e 's|@''GNULIB_LSEEK''@|$(GNULIB_LSEEK)|g' \
+	      -e 's|@''GNULIB_PIPE2''@|$(GNULIB_PIPE2)|g' \
 	      -e 's|@''GNULIB_READLINK''@|$(GNULIB_READLINK)|g' \
 	      -e 's|@''GNULIB_SLEEP''@|$(GNULIB_SLEEP)|g' \
 	      -e 's|@''GNULIB_UNISTD_H_GETOPT''@|$(GNULIB_UNISTD_H_GETOPT)|g' \
 	      -e 's|@''GNULIB_UNISTD_H_SIGPIPE''@|$(GNULIB_UNISTD_H_SIGPIPE)|g' \
 	      -e 's|@''GNULIB_WRITE''@|$(GNULIB_WRITE)|g' \
 	      -e 's|@''HAVE_DUP2''@|$(HAVE_DUP2)|g' \
+	      -e 's|@''HAVE_DUP3''@|$(HAVE_DUP3)|g' \
 	      -e 's|@''HAVE_EUIDACCESS''@|$(HAVE_EUIDACCESS)|g' \
 	      -e 's|@''HAVE_FSYNC''@|$(HAVE_FSYNC)|g' \
 	      -e 's|@''HAVE_FTRUNCATE''@|$(HAVE_FTRUNCATE)|g' \
@@ -1079,6 +1088,7 @@ unistd.h: unistd.in.h
 	      -e 's|@''HAVE_GETPAGESIZE''@|$(HAVE_GETPAGESIZE)|g' \
 	      -e 's|@''HAVE_GETUSERSHELL''@|$(HAVE_GETUSERSHELL)|g' \
 	      -e 's|@''HAVE_LINK''@|$(HAVE_LINK)|g' \
+	      -e 's|@''HAVE_PIPE2''@|$(HAVE_PIPE2)|g' \
 	      -e 's|@''HAVE_READLINK''@|$(HAVE_READLINK)|g' \
 	      -e 's|@''HAVE_SLEEP''@|$(HAVE_SLEEP)|g' \
 	      -e 's|@''HAVE_DECL_ENVIRON''@|$(HAVE_DECL_ENVIRON)|g' \
@@ -1098,7 +1108,7 @@ unistd.h: unistd.in.h
 	      -e 's|@''UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS''@|$(UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS)|g' \
 	      -e '/definition of GL_LINK_WARNING/r $(LINK_WARNING_H)' \
 	      < $(srcdir)/unistd.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv $@-t $@
 MOSTLYCLEANFILES += unistd.h unistd.h-t
 
@@ -1148,7 +1158,7 @@ BUILT_SOURCES += $(WCHAR_H)
 # We need the following in order to create <wchar.h> when the system
 # version does not work standalone.
 wchar.h: wchar.in.h
-	rm -f $@-t $@
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
 	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
@@ -1191,7 +1201,7 @@ wchar.h: wchar.in.h
 	      -e 's|@''REPLACE_WCWIDTH''@|$(REPLACE_WCWIDTH)|g' \
 	      -e '/definition of GL_LINK_WARNING/r $(LINK_WARNING_H)' \
 	    < $(srcdir)/wchar.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv $@-t $@
 MOSTLYCLEANFILES += wchar.h wchar.h-t
 
diff --git a/gl/m4/gnulib-comp.m4 b/gl/m4/gnulib-comp.m4
index e471c1cae8..fb65350e03 100644
--- a/gl/m4/gnulib-comp.m4
+++ b/gl/m4/gnulib-comp.m4
@@ -125,6 +125,7 @@ AC_SUBST([LTALLOCA])
   gl_FUNC_PERROR
   gl_STRING_MODULE_INDICATOR([perror])
   gl_PMCCABE2HTML
+  AC_CHECK_DECLS([program_invocation_name], [], [], [#include <errno.h>])
   gl_FUNC_READ_FILE
   gl_FUNC_READLINE
   gl_FUNC_REALLOC_POSIX
diff --git a/gl/m4/stdlib_h.m4 b/gl/m4/stdlib_h.m4
index b295f16b27..89ac97fb92 100644
--- a/gl/m4/stdlib_h.m4
+++ b/gl/m4/stdlib_h.m4
@@ -1,4 +1,4 @@
-# stdlib_h.m4 serial 15
+# stdlib_h.m4 serial 16
 dnl Copyright (C) 2007-2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -40,6 +40,7 @@ AC_DEFUN([gl_STDLIB_H_DEFAULTS],
   GNULIB_GETLOADAVG=0;    AC_SUBST([GNULIB_GETLOADAVG])
   GNULIB_GETSUBOPT=0;     AC_SUBST([GNULIB_GETSUBOPT])
   GNULIB_MKDTEMP=0;       AC_SUBST([GNULIB_MKDTEMP])
+  GNULIB_MKOSTEMP=0;      AC_SUBST([GNULIB_MKOSTEMP])
   GNULIB_MKSTEMP=0;       AC_SUBST([GNULIB_MKSTEMP])
   GNULIB_PUTENV=0;        AC_SUBST([GNULIB_PUTENV])
   GNULIB_RANDOM_R=0;      AC_SUBST([GNULIB_RANDOM_R])
@@ -55,6 +56,7 @@ AC_DEFUN([gl_STDLIB_H_DEFAULTS],
   HAVE_GETSUBOPT=1;          AC_SUBST([HAVE_GETSUBOPT])
   HAVE_MALLOC_POSIX=1;       AC_SUBST([HAVE_MALLOC_POSIX])
   HAVE_MKDTEMP=1;            AC_SUBST([HAVE_MKDTEMP])
+  HAVE_MKOSTEMP=1;           AC_SUBST([HAVE_MKOSTEMP])
   HAVE_REALLOC_POSIX=1;      AC_SUBST([HAVE_REALLOC_POSIX])
   HAVE_RANDOM_R=1;           AC_SUBST([HAVE_RANDOM_R])
   HAVE_RPMATCH=1;            AC_SUBST([HAVE_RPMATCH])
diff --git a/gl/m4/sys_socket_h.m4 b/gl/m4/sys_socket_h.m4
index d4873fa810..e864b2c7e2 100644
--- a/gl/m4/sys_socket_h.m4
+++ b/gl/m4/sys_socket_h.m4
@@ -1,4 +1,4 @@
-# sys_socket_h.m4 serial 12
+# sys_socket_h.m4 serial 13
 dnl Copyright (C) 2005-2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -140,6 +140,8 @@ AC_DEFUN([gl_SYS_SOCKET_H_DEFAULTS],
   GNULIB_SENDTO=0;      AC_SUBST([GNULIB_SENDTO])
   GNULIB_SETSOCKOPT=0;  AC_SUBST([GNULIB_SETSOCKOPT])
   GNULIB_SHUTDOWN=0;    AC_SUBST([GNULIB_SHUTDOWN])
+  GNULIB_ACCEPT4=0;     AC_SUBST([GNULIB_ACCEPT4])
   HAVE_STRUCT_SOCKADDR_STORAGE=1; AC_SUBST([HAVE_STRUCT_SOCKADDR_STORAGE])
   HAVE_SA_FAMILY_T=1;   AC_SUBST([HAVE_SA_FAMILY_T])
+  HAVE_ACCEPT4=1;       AC_SUBST([HAVE_ACCEPT4])
 ])
diff --git a/gl/m4/unistd_h.m4 b/gl/m4/unistd_h.m4
index d7a89e1302..53fc330bef 100644
--- a/gl/m4/unistd_h.m4
+++ b/gl/m4/unistd_h.m4
@@ -1,4 +1,4 @@
-# unistd_h.m4 serial 19
+# unistd_h.m4 serial 21
 dnl Copyright (C) 2006-2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -35,6 +35,7 @@ AC_DEFUN([gl_UNISTD_H_DEFAULTS],
   GNULIB_CHOWN=0;            AC_SUBST([GNULIB_CHOWN])
   GNULIB_CLOSE=0;            AC_SUBST([GNULIB_CLOSE])
   GNULIB_DUP2=0;             AC_SUBST([GNULIB_DUP2])
+  GNULIB_DUP3=0;             AC_SUBST([GNULIB_DUP3])
   GNULIB_ENVIRON=0;          AC_SUBST([GNULIB_ENVIRON])
   GNULIB_EUIDACCESS=0;       AC_SUBST([GNULIB_EUIDACCESS])
   GNULIB_FCHDIR=0;           AC_SUBST([GNULIB_FCHDIR])
@@ -50,6 +51,7 @@ AC_DEFUN([gl_UNISTD_H_DEFAULTS],
   GNULIB_LCHOWN=0;           AC_SUBST([GNULIB_LCHOWN])
   GNULIB_LINK=0;             AC_SUBST([GNULIB_LINK])
   GNULIB_LSEEK=0;            AC_SUBST([GNULIB_LSEEK])
+  GNULIB_PIPE2=0;            AC_SUBST([GNULIB_PIPE2])
   GNULIB_READLINK=0;         AC_SUBST([GNULIB_READLINK])
   GNULIB_SLEEP=0;            AC_SUBST([GNULIB_SLEEP])
   GNULIB_UNISTD_H_GETOPT=0;  AC_SUBST([GNULIB_UNISTD_H_GETOPT])
@@ -57,6 +59,7 @@ AC_DEFUN([gl_UNISTD_H_DEFAULTS],
   GNULIB_WRITE=0;            AC_SUBST([GNULIB_WRITE])
   dnl Assume proper GNU behavior unless another module says otherwise.
   HAVE_DUP2=1;            AC_SUBST([HAVE_DUP2])
+  HAVE_DUP3=1;            AC_SUBST([HAVE_DUP3])
   HAVE_EUIDACCESS=1;      AC_SUBST([HAVE_EUIDACCESS])
   HAVE_FSYNC=1;           AC_SUBST([HAVE_FSYNC])
   HAVE_FTRUNCATE=1;       AC_SUBST([HAVE_FTRUNCATE])
@@ -66,6 +69,7 @@ AC_DEFUN([gl_UNISTD_H_DEFAULTS],
   HAVE_GETPAGESIZE=1;     AC_SUBST([HAVE_GETPAGESIZE])
   HAVE_GETUSERSHELL=1;    AC_SUBST([HAVE_GETUSERSHELL])
   HAVE_LINK=1;            AC_SUBST([HAVE_LINK])
+  HAVE_PIPE2=1;           AC_SUBST([HAVE_PIPE2])
   HAVE_READLINK=1;        AC_SUBST([HAVE_READLINK])
   HAVE_SLEEP=1;           AC_SUBST([HAVE_SLEEP])
   HAVE_DECL_ENVIRON=1;    AC_SUBST([HAVE_DECL_ENVIRON])
diff --git a/gl/progname.c b/gl/progname.c
index 9854b5e7cc..19df10ad71 100644
--- a/gl/progname.c
+++ b/gl/progname.c
@@ -22,6 +22,7 @@
 #undef ENABLE_RELOCATABLE /* avoid defining set_program_name as a macro */
 #include "progname.h"
 
+#include <errno.h> /* get program_invocation_name declaration */
 #include <string.h>
 
 
@@ -60,4 +61,11 @@ set_program_name (const char *argv0)
    */
 
   program_name = argv0;
+
+  /* On glibc systems, when the gnulib module 'error' is not used, the error()
+     function comes from libc and uses the variable program_invocation_name,
+     not program_name.  So set this variable as well.  */
+#if HAVE_DECL_PROGRAM_INVOCATION_NAME
+  program_invocation_name = (char *) argv0;
+#endif
 }
diff --git a/gl/stdlib.in.h b/gl/stdlib.in.h
index c7c8e8fb7f..9ac7199568 100644
--- a/gl/stdlib.in.h
+++ b/gl/stdlib.in.h
@@ -207,6 +207,31 @@ extern char * mkdtemp (char * /*template*/);
 #endif
 
 
+#if @GNULIB_MKOSTEMP@
+# if !@HAVE_MKOSTEMP@
+/* Create a unique temporary file from TEMPLATE.
+   The last six characters of TEMPLATE must be "XXXXXX";
+   they are replaced with a string that makes the file name unique.
+   The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>)
+   and O_TEXT, O_BINARY (defined in "binary-io.h").
+   The file is then created, with the specified flags, ensuring it didn't exist
+   before.
+   The file is created read-write (mask at least 0600 & ~umask), but it may be
+   world-readable and world-writable (mask 0666 & ~umask), depending on the
+   implementation.
+   Returns the open file descriptor if successful, otherwise -1 and errno
+   set.  */
+extern int mkostemp (char * /*template*/, int /*flags*/);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef mkostemp
+# define mkostemp(t,f) \
+    (GL_LINK_WARNING ("mkostemp is unportable - " \
+                      "use gnulib module mkostemp for portability"), \
+     mkostemp (t, f))
+#endif
+
+
 #if @GNULIB_MKSTEMP@
 # if @REPLACE_MKSTEMP@
 /* Create a unique temporary file from TEMPLATE.
diff --git a/gl/sys_socket.in.h b/gl/sys_socket.in.h
index 26577dfaa0..16a7568453 100644
--- a/gl/sys_socket.in.h
+++ b/gl/sys_socket.in.h
@@ -423,5 +423,32 @@ extern int rpl_shutdown (int, int);
 
 #endif /* HAVE_SYS_SOCKET_H */
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if @GNULIB_ACCEPT4@
+/* Accept a connection on a socket, with specific opening flags.
+   The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>)
+   and O_TEXT, O_BINARY (defined in "binary-io.h").
+   See also the Linux man page at
+   <http://www.kernel.org/doc/man-pages/online/pages/man2/accept4.2.html>.  */
+# if @HAVE_ACCEPT4@
+#  define accept4 rpl_accept4
+# endif
+extern int accept4 (int sockfd, struct sockaddr *addr, socklen_t *addrlen,
+		    int flags);
+#elif defined GNULIB_POSIXCHECK
+# undef accept4
+# define accept4(s,a,l,f) \
+    (GL_LINK_WARNING ("accept4 is unportable - " \
+                      "use gnulib module accept4 for portability"), \
+     accept4 (s, a, l, f))
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* _GL_SYS_SOCKET_H */
 #endif /* _GL_SYS_SOCKET_H */
diff --git a/gl/tests/Makefile.am b/gl/tests/Makefile.am
index 375c8bf7c6..cf3647f9f4 100644
--- a/gl/tests/Makefile.am
+++ b/gl/tests/Makefile.am
@@ -304,8 +304,8 @@ BUILT_SOURCES += $(SYS_IOCTL_H)
 # We need the following in order to create <sys/ioctl.h> when the system
 # does not have a complete one.
 sys/ioctl.h: sys_ioctl.in.h
-	@MKDIR_P@ sys
-	rm -f $@-t $@
+	$(AM_V_at)@MKDIR_P@ sys
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
 	  sed -e 's|@''HAVE_SYS_IOCTL_H''@|$(HAVE_SYS_IOCTL_H)|g' \
 	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
@@ -316,7 +316,7 @@ sys/ioctl.h: sys_ioctl.in.h
 	      -e 's|@''SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS''@|$(SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS)|g' \
 	      -e '/definition of GL_LINK_WARNING/r $(LINK_WARNING_H)' \
 	      < $(srcdir)/sys_ioctl.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv $@-t $@
 MOSTLYCLEANFILES += sys/ioctl.h sys/ioctl.h-t
 MOSTLYCLEANDIRS += sys
diff --git a/gl/unistd.in.h b/gl/unistd.in.h
index aada3643ef..f61dc65f14 100644
--- a/gl/unistd.in.h
+++ b/gl/unistd.in.h
@@ -178,6 +178,28 @@ extern int dup2 (int oldfd, int newfd);
 #endif
 
 
+#if @GNULIB_DUP3@
+/* Copy the file descriptor OLDFD into file descriptor NEWFD, with the
+   specified flags.
+   The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>)
+   and O_TEXT, O_BINARY (defined in "binary-io.h").
+   Close NEWFD first if it is open.
+   Return newfd if successful, otherwise -1 and errno set.
+   See the Linux man page at
+   <http://www.kernel.org/doc/man-pages/online/pages/man2/dup3.2.html>.  */
+# if @HAVE_DUP3@
+#  define dup3 rpl_dup3
+# endif
+extern int dup3 (int oldfd, int newfd, int flags);
+#elif defined GNULIB_POSIXCHECK
+# undef dup3
+# define dup3(o,n,f) \
+    (GL_LINK_WARNING ("dup3 is unportable - " \
+                      "use gnulib module dup3 for portability"), \
+     dup3 (o, n, f))
+#endif
+
+
 #if @GNULIB_ENVIRON@
 # if !@HAVE_DECL_ENVIRON@
 /* Set of environment variables and values.  An array of strings of the form
@@ -328,7 +350,8 @@ extern int getdomainname(char *name, size_t len);
 
 #if @GNULIB_GETDTABLESIZE@
 # if !@HAVE_GETDTABLESIZE@
-/* Return the maximum number of file descriptors in the current process.  */
+/* Return the maximum number of file descriptors in the current process.
+   In POSIX, this is same as sysconf (_SC_OPEN_MAX).  */
 extern int getdtablesize (void);
 # endif
 #elif defined GNULIB_POSIXCHECK
@@ -531,6 +554,28 @@ extern int link (const char *path1, const char *path2);
 #endif
 
 
+#if @GNULIB_PIPE2@
+/* Create a pipe, applying the given flags when opening the read-end of the
+   pipe and the write-end of the pipe.
+   The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>)
+   and O_TEXT, O_BINARY (defined in "binary-io.h").
+   Store the read-end as fd[0] and the write-end as fd[1].
+   Return 0 upon success, or -1 with errno set upon failure.
+   See also the Linux man page at
+   <http://www.kernel.org/doc/man-pages/online/pages/man2/pipe2.2.html>.  */
+# if @HAVE_PIPE2@
+#  define pipe2 rpl_pipe2
+# endif
+extern int pipe2 (int fd[2], int flags);
+#elif defined GNULIB_POSIXCHECK
+# undef pipe2
+# define pipe2(f,o) \
+    (GL_LINK_WARNING ("pipe2 is unportable - " \
+                      "use gnulib module pipe2 for portability"), \
+     pipe2 (f, o))
+#endif
+
+
 #if @GNULIB_READLINK@
 /* Read the contents of the symbolic link FILE and place the first BUFSIZE
    bytes of it into BUF.  Return the number of bytes placed into BUF if
diff --git a/gl/vasnprintf.c b/gl/vasnprintf.c
index 82b4b2c0e8..e47e00c748 100644
--- a/gl/vasnprintf.c
+++ b/gl/vasnprintf.c
@@ -257,7 +257,7 @@ local_wcsnlen (const wchar_t *s, size_t maxlen)
 # ifndef decimal_point_char_defined
 #  define decimal_point_char_defined 1
 static char
-decimal_point_char ()
+decimal_point_char (void)
 {
   const char *point;
   /* Determine it in a multithread-safe way.  We know nl_langinfo is
diff --git a/lib/gl/Makefile.am b/lib/gl/Makefile.am
index c6654ab6fa..c5f48d65bb 100644
--- a/lib/gl/Makefile.am
+++ b/lib/gl/Makefile.am
@@ -53,9 +53,10 @@ BUILT_SOURCES += $(ALLOCA_H)
 # We need the following in order to create <alloca.h> when the system
 # doesn't have one that works with the given compiler.
 alloca.h: alloca.in.h
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
 	  cat $(srcdir)/alloca.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv -f $@-t $@
 MOSTLYCLEANFILES += alloca.h alloca.h-t
 
@@ -70,9 +71,10 @@ BUILT_SOURCES += $(BYTESWAP_H)
 # We need the following in order to create <byteswap.h> when the system
 # doesn't have one.
 byteswap.h: byteswap.in.h
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
 	  cat $(srcdir)/byteswap.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv -f $@-t $@
 MOSTLYCLEANFILES += byteswap.h byteswap.h-t
 
@@ -101,7 +103,7 @@ BUILT_SOURCES += $(ERRNO_H)
 # We need the following in order to create <errno.h> when the system
 # doesn't have one that is POSIX compliant.
 errno.h: errno.in.h
-	rm -f $@-t $@
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
 	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
@@ -113,7 +115,7 @@ errno.h: errno.in.h
 	      -e 's|@''EOVERFLOW_HIDDEN''@|$(EOVERFLOW_HIDDEN)|g' \
 	      -e 's|@''EOVERFLOW_VALUE''@|$(EOVERFLOW_VALUE)|g' \
 	      < $(srcdir)/errno.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv $@-t $@
 MOSTLYCLEANFILES += errno.h errno.h-t
 
@@ -128,13 +130,13 @@ BUILT_SOURCES += $(FLOAT_H)
 # We need the following in order to create <float.h> when the system
 # doesn't have one that works with the given compiler.
 float.h: float.in.h
-	rm -f $@-t $@
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
 	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
 	      -e 's|@''NEXT_FLOAT_H''@|$(NEXT_FLOAT_H)|g' \
 	      < $(srcdir)/float.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv $@-t $@
 MOSTLYCLEANFILES += float.h float.h-t
 
@@ -237,7 +239,7 @@ BUILT_SOURCES += $(NETDB_H)
 # We need the following in order to create <netdb.h> when the system
 # doesn't have one that works with the given compiler.
 netdb.h: netdb.in.h
-	rm -f $@-t $@
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
 	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
@@ -250,7 +252,7 @@ netdb.h: netdb.in.h
 	      -e 's|@''HAVE_DECL_GETADDRINFO''@|$(HAVE_DECL_GETADDRINFO)|g' \
 	      -e 's|@''HAVE_DECL_GETNAMEINFO''@|$(HAVE_DECL_GETNAMEINFO)|g' \
 	      < $(srcdir)/netdb.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv $@-t $@
 MOSTLYCLEANFILES += netdb.h netdb.h-t
 
@@ -306,10 +308,10 @@ BUILT_SOURCES += $(STDBOOL_H)
 # We need the following in order to create <stdbool.h> when the system
 # doesn't have one that works.
 stdbool.h: stdbool.in.h
-	rm -f $@-t $@
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
 	  sed -e 's/@''HAVE__BOOL''@/$(HAVE__BOOL)/g' < $(srcdir)/stdbool.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv $@-t $@
 MOSTLYCLEANFILES += stdbool.h stdbool.h-t
 
@@ -324,7 +326,7 @@ BUILT_SOURCES += $(STDDEF_H)
 # We need the following in order to create <stddef.h> when the system
 # doesn't have one that works with the given compiler.
 stddef.h: stddef.in.h
-	rm -f $@-t $@
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
 	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
@@ -332,7 +334,7 @@ stddef.h: stddef.in.h
 	      -e 's|@''HAVE_WCHAR_T''@|$(HAVE_WCHAR_T)|g' \
 	      -e 's|@''REPLACE_NULL''@|$(REPLACE_NULL)|g' \
 	      < $(srcdir)/stddef.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv $@-t $@
 MOSTLYCLEANFILES += stddef.h stddef.h-t
 
@@ -347,7 +349,7 @@ BUILT_SOURCES += $(STDINT_H)
 # We need the following in order to create <stdint.h> when the system
 # doesn't have one that works with the given compiler.
 stdint.h: stdint.in.h
-	rm -f $@-t $@
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
 	  sed -e 's/@''HAVE_STDINT_H''@/$(HAVE_STDINT_H)/g' \
 	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
@@ -374,7 +376,7 @@ stdint.h: stdint.in.h
 	      -e 's/@''HAVE_SIGNED_WINT_T''@/$(HAVE_SIGNED_WINT_T)/g' \
 	      -e 's/@''WINT_T_SUFFIX''@/$(WINT_T_SUFFIX)/g' \
 	      < $(srcdir)/stdint.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv $@-t $@
 MOSTLYCLEANFILES += stdint.h stdint.h-t
 
@@ -389,7 +391,7 @@ BUILT_SOURCES += stdio.h
 # We need the following in order to create <stdio.h> when the system
 # doesn't have one that works with the given compiler.
 stdio.h: stdio.in.h
-	rm -f $@-t $@
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
 	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
@@ -467,7 +469,7 @@ stdio.h: stdio.in.h
 	      -e 's|@''REPLACE_PERROR''@|$(REPLACE_PERROR)|g' \
 	      -e '/definition of GL_LINK_WARNING/r $(LINK_WARNING_H)' \
 	      < $(srcdir)/stdio.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv $@-t $@
 MOSTLYCLEANFILES += stdio.h stdio.h-t
 
@@ -484,7 +486,7 @@ BUILT_SOURCES += stdlib.h
 # We need the following in order to create <stdlib.h> when the system
 # doesn't have one that works with the given compiler.
 stdlib.h: stdlib.in.h
-	rm -f $@-t $@
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
 	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
@@ -497,6 +499,7 @@ stdlib.h: stdlib.in.h
 	      -e 's|@''GNULIB_GETLOADAVG''@|$(GNULIB_GETLOADAVG)|g' \
 	      -e 's|@''GNULIB_GETSUBOPT''@|$(GNULIB_GETSUBOPT)|g' \
 	      -e 's|@''GNULIB_MKDTEMP''@|$(GNULIB_MKDTEMP)|g' \
+	      -e 's|@''GNULIB_MKOSTEMP''@|$(GNULIB_MKOSTEMP)|g' \
 	      -e 's|@''GNULIB_MKSTEMP''@|$(GNULIB_MKSTEMP)|g' \
 	      -e 's|@''GNULIB_PUTENV''@|$(GNULIB_PUTENV)|g' \
 	      -e 's|@''GNULIB_RANDOM_R''@|$(GNULIB_RANDOM_R)|g' \
@@ -511,6 +514,7 @@ stdlib.h: stdlib.in.h
 	      -e 's|@''HAVE_GETSUBOPT''@|$(HAVE_GETSUBOPT)|g' \
 	      -e 's|@''HAVE_MALLOC_POSIX''@|$(HAVE_MALLOC_POSIX)|g' \
 	      -e 's|@''HAVE_MKDTEMP''@|$(HAVE_MKDTEMP)|g' \
+	      -e 's|@''HAVE_MKOSTEMP''@|$(HAVE_MKOSTEMP)|g' \
 	      -e 's|@''HAVE_REALLOC_POSIX''@|$(HAVE_REALLOC_POSIX)|g' \
 	      -e 's|@''HAVE_RANDOM_R''@|$(HAVE_RANDOM_R)|g' \
 	      -e 's|@''HAVE_RPMATCH''@|$(HAVE_RPMATCH)|g' \
@@ -528,7 +532,7 @@ stdlib.h: stdlib.in.h
 	      -e 's|@''VOID_UNSETENV''@|$(VOID_UNSETENV)|g' \
 	      -e '/definition of GL_LINK_WARNING/r $(LINK_WARNING_H)' \
 	      < $(srcdir)/stdlib.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv $@-t $@
 MOSTLYCLEANFILES += stdlib.h stdlib.h-t
 
@@ -552,7 +556,7 @@ BUILT_SOURCES += string.h
 # We need the following in order to create <string.h> when the system
 # doesn't have one that works with the given compiler.
 string.h: string.in.h
-	rm -f $@-t $@
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
 	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
@@ -617,7 +621,7 @@ string.h: string.in.h
 	      -e 's|@''REPLACE_STRSIGNAL''@|$(REPLACE_STRSIGNAL)|g' \
 	      -e '/definition of GL_LINK_WARNING/r $(LINK_WARNING_H)' \
 	      < $(srcdir)/string.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv $@-t $@
 MOSTLYCLEANFILES += string.h string.h-t
 
@@ -632,7 +636,7 @@ BUILT_SOURCES += strings.h
 # We need the following in order to create <strings.h> when the system
 # doesn't have one that works with the given compiler.
 strings.h: strings.in.h
-	rm -f $@-t $@
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
 	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
@@ -641,7 +645,7 @@ strings.h: strings.in.h
 	      -e 's|@''HAVE_DECL_STRNCASECMP''@|$(HAVE_DECL_STRNCASECMP)|g' \
 	      -e '/definition of GL_LINK_WARNING/r $(LINK_WARNING_H)' \
 	      < $(srcdir)/strings.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv $@-t $@
 MOSTLYCLEANFILES += strings.h strings.h-t
 
@@ -665,7 +669,8 @@ BUILT_SOURCES += $(SYS_SOCKET_H)
 # We need the following in order to create <sys/socket.h> when the system
 # doesn't have one that works with the given compiler.
 sys/socket.h: sys_socket.in.h
-	@MKDIR_P@ sys
+	$(AM_V_at)@MKDIR_P@ sys
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
 	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
@@ -686,13 +691,15 @@ sys/socket.h: sys_socket.in.h
 	      -e 's|@''GNULIB_SENDTO''@|$(GNULIB_SENDTO)|g' \
 	      -e 's|@''GNULIB_SETSOCKOPT''@|$(GNULIB_SETSOCKOPT)|g' \
 	      -e 's|@''GNULIB_SHUTDOWN''@|$(GNULIB_SHUTDOWN)|g' \
+	      -e 's|@''GNULIB_ACCEPT4''@|$(GNULIB_ACCEPT4)|g' \
 	      -e 's|@''HAVE_WINSOCK2_H''@|$(HAVE_WINSOCK2_H)|g' \
 	      -e 's|@''HAVE_WS2TCPIP_H''@|$(HAVE_WS2TCPIP_H)|g' \
 	      -e 's|@''HAVE_STRUCT_SOCKADDR_STORAGE''@|$(HAVE_STRUCT_SOCKADDR_STORAGE)|g' \
 	      -e 's|@''HAVE_SA_FAMILY_T''@|$(HAVE_SA_FAMILY_T)|g' \
+	      -e 's|@''HAVE_ACCEPT4''@|$(HAVE_ACCEPT4)|g' \
 	      -e '/definition of GL_LINK_WARNING/r $(LINK_WARNING_H)' \
 	      < $(srcdir)/sys_socket.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv -f $@-t $@
 MOSTLYCLEANFILES += sys/socket.h sys/socket.h-t
 MOSTLYCLEANDIRS += sys
@@ -708,8 +715,8 @@ BUILT_SOURCES += $(SYS_STAT_H)
 # We need the following in order to create <sys/stat.h> when the system
 # has one that is incomplete.
 sys/stat.h: sys_stat.in.h
-	@MKDIR_P@ sys
-	rm -f $@-t $@
+	$(AM_V_at)@MKDIR_P@ sys
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
 	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
@@ -722,7 +729,7 @@ sys/stat.h: sys_stat.in.h
 	      -e 's|@''REPLACE_MKDIR''@|$(REPLACE_MKDIR)|g' \
 	      -e '/definition of GL_LINK_WARNING/r $(LINK_WARNING_H)' \
 	      < $(srcdir)/sys_stat.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv $@-t $@
 MOSTLYCLEANFILES += sys/stat.h sys/stat.h-t
 MOSTLYCLEANDIRS += sys
@@ -738,7 +745,7 @@ BUILT_SOURCES += time.h
 # We need the following in order to create <time.h> when the system
 # doesn't have one that works with the given compiler.
 time.h: time.in.h
-	rm -f $@-t $@
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
 	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
@@ -751,7 +758,7 @@ time.h: time.in.h
 	      -e 's|@SYS_TIME_H_DEFINES_STRUCT_TIMESPEC''@|$(SYS_TIME_H_DEFINES_STRUCT_TIMESPEC)|g' \
 	      -e 's|@TIME_H_DEFINES_STRUCT_TIMESPEC''@|$(TIME_H_DEFINES_STRUCT_TIMESPEC)|g' \
 	      < $(srcdir)/time.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv $@-t $@
 MOSTLYCLEANFILES += time.h time.h-t
 
@@ -775,7 +782,7 @@ BUILT_SOURCES += unistd.h
 # We need the following in order to create an empty placeholder for
 # <unistd.h> when the system doesn't have one.
 unistd.h: unistd.in.h
-	rm -f $@-t $@
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
 	  sed -e 's|@''HAVE_UNISTD_H''@|$(HAVE_UNISTD_H)|g' \
 	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
@@ -784,6 +791,7 @@ unistd.h: unistd.in.h
 	      -e 's|@''GNULIB_CHOWN''@|$(GNULIB_CHOWN)|g' \
 	      -e 's|@''GNULIB_CLOSE''@|$(GNULIB_CLOSE)|g' \
 	      -e 's|@''GNULIB_DUP2''@|$(GNULIB_DUP2)|g' \
+	      -e 's|@''GNULIB_DUP3''@|$(GNULIB_DUP3)|g' \
 	      -e 's|@''GNULIB_ENVIRON''@|$(GNULIB_ENVIRON)|g' \
 	      -e 's|@''GNULIB_EUIDACCESS''@|$(GNULIB_EUIDACCESS)|g' \
 	      -e 's|@''GNULIB_FCHDIR''@|$(GNULIB_FCHDIR)|g' \
@@ -799,12 +807,14 @@ unistd.h: unistd.in.h
 	      -e 's|@''GNULIB_LCHOWN''@|$(GNULIB_LCHOWN)|g' \
 	      -e 's|@''GNULIB_LINK''@|$(GNULIB_LINK)|g' \
 	      -e 's|@''GNULIB_LSEEK''@|$(GNULIB_LSEEK)|g' \
+	      -e 's|@''GNULIB_PIPE2''@|$(GNULIB_PIPE2)|g' \
 	      -e 's|@''GNULIB_READLINK''@|$(GNULIB_READLINK)|g' \
 	      -e 's|@''GNULIB_SLEEP''@|$(GNULIB_SLEEP)|g' \
 	      -e 's|@''GNULIB_UNISTD_H_GETOPT''@|$(GNULIB_UNISTD_H_GETOPT)|g' \
 	      -e 's|@''GNULIB_UNISTD_H_SIGPIPE''@|$(GNULIB_UNISTD_H_SIGPIPE)|g' \
 	      -e 's|@''GNULIB_WRITE''@|$(GNULIB_WRITE)|g' \
 	      -e 's|@''HAVE_DUP2''@|$(HAVE_DUP2)|g' \
+	      -e 's|@''HAVE_DUP3''@|$(HAVE_DUP3)|g' \
 	      -e 's|@''HAVE_EUIDACCESS''@|$(HAVE_EUIDACCESS)|g' \
 	      -e 's|@''HAVE_FSYNC''@|$(HAVE_FSYNC)|g' \
 	      -e 's|@''HAVE_FTRUNCATE''@|$(HAVE_FTRUNCATE)|g' \
@@ -814,6 +824,7 @@ unistd.h: unistd.in.h
 	      -e 's|@''HAVE_GETPAGESIZE''@|$(HAVE_GETPAGESIZE)|g' \
 	      -e 's|@''HAVE_GETUSERSHELL''@|$(HAVE_GETUSERSHELL)|g' \
 	      -e 's|@''HAVE_LINK''@|$(HAVE_LINK)|g' \
+	      -e 's|@''HAVE_PIPE2''@|$(HAVE_PIPE2)|g' \
 	      -e 's|@''HAVE_READLINK''@|$(HAVE_READLINK)|g' \
 	      -e 's|@''HAVE_SLEEP''@|$(HAVE_SLEEP)|g' \
 	      -e 's|@''HAVE_DECL_ENVIRON''@|$(HAVE_DECL_ENVIRON)|g' \
@@ -833,7 +844,7 @@ unistd.h: unistd.in.h
 	      -e 's|@''UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS''@|$(UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS)|g' \
 	      -e '/definition of GL_LINK_WARNING/r $(LINK_WARNING_H)' \
 	      < $(srcdir)/unistd.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv $@-t $@
 MOSTLYCLEANFILES += unistd.h unistd.h-t
 
@@ -875,7 +886,7 @@ BUILT_SOURCES += $(WCHAR_H)
 # We need the following in order to create <wchar.h> when the system
 # version does not work standalone.
 wchar.h: wchar.in.h
-	rm -f $@-t $@
+	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
 	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
@@ -918,7 +929,7 @@ wchar.h: wchar.in.h
 	      -e 's|@''REPLACE_WCWIDTH''@|$(REPLACE_WCWIDTH)|g' \
 	      -e '/definition of GL_LINK_WARNING/r $(LINK_WARNING_H)' \
 	    < $(srcdir)/wchar.in.h; \
-	} > $@-t
+	} > $@-t && \
 	mv $@-t $@
 MOSTLYCLEANFILES += wchar.h wchar.h-t
 
diff --git a/lib/gl/m4/stdlib_h.m4 b/lib/gl/m4/stdlib_h.m4
index b295f16b27..89ac97fb92 100644
--- a/lib/gl/m4/stdlib_h.m4
+++ b/lib/gl/m4/stdlib_h.m4
@@ -1,4 +1,4 @@
-# stdlib_h.m4 serial 15
+# stdlib_h.m4 serial 16
 dnl Copyright (C) 2007-2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -40,6 +40,7 @@ AC_DEFUN([gl_STDLIB_H_DEFAULTS],
   GNULIB_GETLOADAVG=0;    AC_SUBST([GNULIB_GETLOADAVG])
   GNULIB_GETSUBOPT=0;     AC_SUBST([GNULIB_GETSUBOPT])
   GNULIB_MKDTEMP=0;       AC_SUBST([GNULIB_MKDTEMP])
+  GNULIB_MKOSTEMP=0;      AC_SUBST([GNULIB_MKOSTEMP])
   GNULIB_MKSTEMP=0;       AC_SUBST([GNULIB_MKSTEMP])
   GNULIB_PUTENV=0;        AC_SUBST([GNULIB_PUTENV])
   GNULIB_RANDOM_R=0;      AC_SUBST([GNULIB_RANDOM_R])
@@ -55,6 +56,7 @@ AC_DEFUN([gl_STDLIB_H_DEFAULTS],
   HAVE_GETSUBOPT=1;          AC_SUBST([HAVE_GETSUBOPT])
   HAVE_MALLOC_POSIX=1;       AC_SUBST([HAVE_MALLOC_POSIX])
   HAVE_MKDTEMP=1;            AC_SUBST([HAVE_MKDTEMP])
+  HAVE_MKOSTEMP=1;           AC_SUBST([HAVE_MKOSTEMP])
   HAVE_REALLOC_POSIX=1;      AC_SUBST([HAVE_REALLOC_POSIX])
   HAVE_RANDOM_R=1;           AC_SUBST([HAVE_RANDOM_R])
   HAVE_RPMATCH=1;            AC_SUBST([HAVE_RPMATCH])
diff --git a/lib/gl/m4/sys_socket_h.m4 b/lib/gl/m4/sys_socket_h.m4
index d4873fa810..e864b2c7e2 100644
--- a/lib/gl/m4/sys_socket_h.m4
+++ b/lib/gl/m4/sys_socket_h.m4
@@ -1,4 +1,4 @@
-# sys_socket_h.m4 serial 12
+# sys_socket_h.m4 serial 13
 dnl Copyright (C) 2005-2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -140,6 +140,8 @@ AC_DEFUN([gl_SYS_SOCKET_H_DEFAULTS],
   GNULIB_SENDTO=0;      AC_SUBST([GNULIB_SENDTO])
   GNULIB_SETSOCKOPT=0;  AC_SUBST([GNULIB_SETSOCKOPT])
   GNULIB_SHUTDOWN=0;    AC_SUBST([GNULIB_SHUTDOWN])
+  GNULIB_ACCEPT4=0;     AC_SUBST([GNULIB_ACCEPT4])
   HAVE_STRUCT_SOCKADDR_STORAGE=1; AC_SUBST([HAVE_STRUCT_SOCKADDR_STORAGE])
   HAVE_SA_FAMILY_T=1;   AC_SUBST([HAVE_SA_FAMILY_T])
+  HAVE_ACCEPT4=1;       AC_SUBST([HAVE_ACCEPT4])
 ])
diff --git a/lib/gl/m4/unistd_h.m4 b/lib/gl/m4/unistd_h.m4
index d7a89e1302..53fc330bef 100644
--- a/lib/gl/m4/unistd_h.m4
+++ b/lib/gl/m4/unistd_h.m4
@@ -1,4 +1,4 @@
-# unistd_h.m4 serial 19
+# unistd_h.m4 serial 21
 dnl Copyright (C) 2006-2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -35,6 +35,7 @@ AC_DEFUN([gl_UNISTD_H_DEFAULTS],
   GNULIB_CHOWN=0;            AC_SUBST([GNULIB_CHOWN])
   GNULIB_CLOSE=0;            AC_SUBST([GNULIB_CLOSE])
   GNULIB_DUP2=0;             AC_SUBST([GNULIB_DUP2])
+  GNULIB_DUP3=0;             AC_SUBST([GNULIB_DUP3])
   GNULIB_ENVIRON=0;          AC_SUBST([GNULIB_ENVIRON])
   GNULIB_EUIDACCESS=0;       AC_SUBST([GNULIB_EUIDACCESS])
   GNULIB_FCHDIR=0;           AC_SUBST([GNULIB_FCHDIR])
@@ -50,6 +51,7 @@ AC_DEFUN([gl_UNISTD_H_DEFAULTS],
   GNULIB_LCHOWN=0;           AC_SUBST([GNULIB_LCHOWN])
   GNULIB_LINK=0;             AC_SUBST([GNULIB_LINK])
   GNULIB_LSEEK=0;            AC_SUBST([GNULIB_LSEEK])
+  GNULIB_PIPE2=0;            AC_SUBST([GNULIB_PIPE2])
   GNULIB_READLINK=0;         AC_SUBST([GNULIB_READLINK])
   GNULIB_SLEEP=0;            AC_SUBST([GNULIB_SLEEP])
   GNULIB_UNISTD_H_GETOPT=0;  AC_SUBST([GNULIB_UNISTD_H_GETOPT])
@@ -57,6 +59,7 @@ AC_DEFUN([gl_UNISTD_H_DEFAULTS],
   GNULIB_WRITE=0;            AC_SUBST([GNULIB_WRITE])
   dnl Assume proper GNU behavior unless another module says otherwise.
   HAVE_DUP2=1;            AC_SUBST([HAVE_DUP2])
+  HAVE_DUP3=1;            AC_SUBST([HAVE_DUP3])
   HAVE_EUIDACCESS=1;      AC_SUBST([HAVE_EUIDACCESS])
   HAVE_FSYNC=1;           AC_SUBST([HAVE_FSYNC])
   HAVE_FTRUNCATE=1;       AC_SUBST([HAVE_FTRUNCATE])
@@ -66,6 +69,7 @@ AC_DEFUN([gl_UNISTD_H_DEFAULTS],
   HAVE_GETPAGESIZE=1;     AC_SUBST([HAVE_GETPAGESIZE])
   HAVE_GETUSERSHELL=1;    AC_SUBST([HAVE_GETUSERSHELL])
   HAVE_LINK=1;            AC_SUBST([HAVE_LINK])
+  HAVE_PIPE2=1;           AC_SUBST([HAVE_PIPE2])
   HAVE_READLINK=1;        AC_SUBST([HAVE_READLINK])
   HAVE_SLEEP=1;           AC_SUBST([HAVE_SLEEP])
   HAVE_DECL_ENVIRON=1;    AC_SUBST([HAVE_DECL_ENVIRON])
diff --git a/lib/gl/stdlib.in.h b/lib/gl/stdlib.in.h
index a8a06b8688..5afa97e8f9 100644
--- a/lib/gl/stdlib.in.h
+++ b/lib/gl/stdlib.in.h
@@ -207,6 +207,31 @@ extern char * mkdtemp (char * /*template*/);
 #endif
 
 
+#if @GNULIB_MKOSTEMP@
+# if !@HAVE_MKOSTEMP@
+/* Create a unique temporary file from TEMPLATE.
+   The last six characters of TEMPLATE must be "XXXXXX";
+   they are replaced with a string that makes the file name unique.
+   The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>)
+   and O_TEXT, O_BINARY (defined in "binary-io.h").
+   The file is then created, with the specified flags, ensuring it didn't exist
+   before.
+   The file is created read-write (mask at least 0600 & ~umask), but it may be
+   world-readable and world-writable (mask 0666 & ~umask), depending on the
+   implementation.
+   Returns the open file descriptor if successful, otherwise -1 and errno
+   set.  */
+extern int mkostemp (char * /*template*/, int /*flags*/);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef mkostemp
+# define mkostemp(t,f) \
+    (GL_LINK_WARNING ("mkostemp is unportable - " \
+                      "use gnulib module mkostemp for portability"), \
+     mkostemp (t, f))
+#endif
+
+
 #if @GNULIB_MKSTEMP@
 # if @REPLACE_MKSTEMP@
 /* Create a unique temporary file from TEMPLATE.
diff --git a/lib/gl/sys_socket.in.h b/lib/gl/sys_socket.in.h
index b598037928..8e9a7970e7 100644
--- a/lib/gl/sys_socket.in.h
+++ b/lib/gl/sys_socket.in.h
@@ -423,5 +423,32 @@ extern int rpl_shutdown (int, int);
 
 #endif /* HAVE_SYS_SOCKET_H */
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if @GNULIB_ACCEPT4@
+/* Accept a connection on a socket, with specific opening flags.
+   The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>)
+   and O_TEXT, O_BINARY (defined in "binary-io.h").
+   See also the Linux man page at
+   <http://www.kernel.org/doc/man-pages/online/pages/man2/accept4.2.html>.  */
+# if @HAVE_ACCEPT4@
+#  define accept4 rpl_accept4
+# endif
+extern int accept4 (int sockfd, struct sockaddr *addr, socklen_t *addrlen,
+		    int flags);
+#elif defined GNULIB_POSIXCHECK
+# undef accept4
+# define accept4(s,a,l,f) \
+    (GL_LINK_WARNING ("accept4 is unportable - " \
+                      "use gnulib module accept4 for portability"), \
+     accept4 (s, a, l, f))
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* _GL_SYS_SOCKET_H */
 #endif /* _GL_SYS_SOCKET_H */
diff --git a/lib/gl/tests/test-func.c b/lib/gl/tests/test-func.c
index e55fcd5a97..8a3c465e73 100644
--- a/lib/gl/tests/test-func.c
+++ b/lib/gl/tests/test-func.c
@@ -1,5 +1,5 @@
 /* Test whether __func__ is available
-   Copyright (C) 2008 Free Software Foundation, Inc.
+   Copyright (C) 2008-2009 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
@@ -37,6 +37,13 @@
 int
 main ()
 {
+  ASSERT (strlen (__func__) > 0);
+
+  /* On SunPRO C 5.9, sizeof __func__ evaluates to 0.  The compiler warns:
+     "warning: null dimension: sizeof()".  */
+#if !defined __SUNPRO_C
   ASSERT (strlen (__func__) + 1 == sizeof __func__);
+#endif
+
   return 0;
 }
diff --git a/lib/gl/unistd.in.h b/lib/gl/unistd.in.h
index b297e16eef..a259483292 100644
--- a/lib/gl/unistd.in.h
+++ b/lib/gl/unistd.in.h
@@ -178,6 +178,28 @@ extern int dup2 (int oldfd, int newfd);
 #endif
 
 
+#if @GNULIB_DUP3@
+/* Copy the file descriptor OLDFD into file descriptor NEWFD, with the
+   specified flags.
+   The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>)
+   and O_TEXT, O_BINARY (defined in "binary-io.h").
+   Close NEWFD first if it is open.
+   Return newfd if successful, otherwise -1 and errno set.
+   See the Linux man page at
+   <http://www.kernel.org/doc/man-pages/online/pages/man2/dup3.2.html>.  */
+# if @HAVE_DUP3@
+#  define dup3 rpl_dup3
+# endif
+extern int dup3 (int oldfd, int newfd, int flags);
+#elif defined GNULIB_POSIXCHECK
+# undef dup3
+# define dup3(o,n,f) \
+    (GL_LINK_WARNING ("dup3 is unportable - " \
+                      "use gnulib module dup3 for portability"), \
+     dup3 (o, n, f))
+#endif
+
+
 #if @GNULIB_ENVIRON@
 # if !@HAVE_DECL_ENVIRON@
 /* Set of environment variables and values.  An array of strings of the form
@@ -328,7 +350,8 @@ extern int getdomainname(char *name, size_t len);
 
 #if @GNULIB_GETDTABLESIZE@
 # if !@HAVE_GETDTABLESIZE@
-/* Return the maximum number of file descriptors in the current process.  */
+/* Return the maximum number of file descriptors in the current process.
+   In POSIX, this is same as sysconf (_SC_OPEN_MAX).  */
 extern int getdtablesize (void);
 # endif
 #elif defined GNULIB_POSIXCHECK
@@ -531,6 +554,28 @@ extern int link (const char *path1, const char *path2);
 #endif
 
 
+#if @GNULIB_PIPE2@
+/* Create a pipe, applying the given flags when opening the read-end of the
+   pipe and the write-end of the pipe.
+   The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>)
+   and O_TEXT, O_BINARY (defined in "binary-io.h").
+   Store the read-end as fd[0] and the write-end as fd[1].
+   Return 0 upon success, or -1 with errno set upon failure.
+   See also the Linux man page at
+   <http://www.kernel.org/doc/man-pages/online/pages/man2/pipe2.2.html>.  */
+# if @HAVE_PIPE2@
+#  define pipe2 rpl_pipe2
+# endif
+extern int pipe2 (int fd[2], int flags);
+#elif defined GNULIB_POSIXCHECK
+# undef pipe2
+# define pipe2(f,o) \
+    (GL_LINK_WARNING ("pipe2 is unportable - " \
+                      "use gnulib module pipe2 for portability"), \
+     pipe2 (f, o))
+#endif
+
+
 #if @GNULIB_READLINK@
 /* Read the contents of the symbolic link FILE and place the first BUFSIZE
    bytes of it into BUF.  Return the number of bytes placed into BUF if
diff --git a/lib/gl/vasnprintf.c b/lib/gl/vasnprintf.c
index 02595b9924..6f1b4660b2 100644
--- a/lib/gl/vasnprintf.c
+++ b/lib/gl/vasnprintf.c
@@ -257,7 +257,7 @@ local_wcsnlen (const wchar_t *s, size_t maxlen)
 # ifndef decimal_point_char_defined
 #  define decimal_point_char_defined 1
 static char
-decimal_point_char ()
+decimal_point_char (void)
 {
   const char *point;
   /* Determine it in a multithread-safe way.  We know nl_langinfo is
diff --git a/libextra/gl/override/lib/md5.c.diff b/libextra/gl/override/lib/md5.c.diff
index e358243706..327b50e175 100644
--- a/libextra/gl/override/lib/md5.c.diff
+++ b/libextra/gl/override/lib/md5.c.diff
@@ -1,19 +1,19 @@
 --- gl/md5.c.orig	2009-08-20 15:33:39.000000000 +0200
 +++ gl/md5.c	2009-08-20 15:32:00.000000000 +0200
-@@ -129,2 +129,2 @@
+@@ -129,6 +129,8 @@
    return md5_read_ctx (ctx, resbuf);
  }
-
+ 
 +#if 0 /* Not needed by GnuTLS, and it has a large stack frame. */
 +
  /* Compute MD5 message digest for bytes read from STREAM.  The
     resulting message digest number will be written into the 16 bytes
     beginning at RESBLOCK.  */
-@@ -196,3 +194,4 @@
+@@ -196,6 +194,7 @@
    md5_finish_ctx (&ctx, resblock);
    return 0;
  }
 +#endif
-
+ 
  /* Compute MD5 message digest for LEN bytes beginning at BUFFER.  The
     result is always in little endian byte order, so that a byte-wise
-- 
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