link-warning: Add copyright notice.

26 files changed, 81 insertions, 23 deletions

diff --git a/ChangeLog b/ChangeLog
index 7bfe2cd45a..ecc461f05b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,33 @@
+2009-12-09  Simon Josefsson <simon@josefsson.org>
+            Bruno Haible  <bruno@clisp.org>
+
+	* build-aux/link-warning.h: Add copyright notice.
+	* modules/link-warning (Makefile.am): Generate link-warning.h from
+	build-aux/link-warning.h. Update LINK_WARNING_H accordingly.
+	* NEWS: Mention change in link-warning module.
+	* modules/arpa_inet (Makefile.am): Add dependency to arpa/inet.h.
+	* modules/dirent (Makefile.am): Add dependency to dirent.h.
+	* modules/fcntl-h (Makefile.am): Add dependency to fcntl.h.
+	* modules/getopt-posix (Makefile.am): Add dependency to getopt.h.
+	* modules/inttypes (Makefile.am): Add dependency to inttypes.h.
+	* modules/math (Makefile.am): Add dependency to math.h.
+	* modules/search (Makefile.am): Add dependency to search.h.
+	* modules/signal (Makefile.am): Add dependency to signal.h.
+	* modules/spawn (Makefile.am): Add dependency to spawn.h.
+	* modules/stdio (Makefile.am): Add dependency to stdio.h.
+	* modules/stdlib (Makefile.am): Add dependency to stdlib.h.
+	* modules/string (Makefile.am): Add dependency to string.h.
+	* modules/strings (Makefile.am): Add dependency to strings.h.
+	* modules/sys_ioctl (Makefile.am): Add dependency to sys/ioctl.h.
+	* modules/sys_select (Makefile.am): Add dependency to sys/select.h.
+	* modules/sys_socket (Makefile.am): Add dependency to sys/socket.h.
+	* modules/sys_stat (Makefile.am): Add dependency to sys/stat.h.
+	* modules/sys_times (Makefile.am): Add dependency to sys/times.h.
+	* modules/sys_utsname (Makefile.am): Add dependency to sys/utsname.h.
+	* modules/sys_wait (Makefile.am): Add dependency to sys/wait.h.
+	* modules/unistd (Makefile.am): Add dependency to unistd.h.
+	* modules/wchar (Makefile.am): Add dependency to wchar.h.
+
 2009-12-09  Bruno Haible  <bruno@clisp.org>
 
 	fchdir: Optimize away rpl_fstat when possible.
diff --git a/NEWS b/NEWS
index 2f364f74c4..cfa017c349 100644
--- a/NEWS
+++ b/NEWS
@@ -6,6 +6,10 @@ User visible incompatible changes
 
 Date        Modules         Changes
 
+2009-12-09  link-warning    The Makefile rules that use $(LINK_WARNING_H) now
+                            must contain an explicit dependency on
+                            $(LINK_WARNING_H).
+
 2009-11-12  getgroups       These functions now use a signature of gid_t,
             getugroups      rather than GETGROUPS_T.  This probably has no
                             effect except on very old platforms.
diff --git a/build-aux/link-warning.h b/build-aux/link-warning.h
index fda01941af..9ff7c175ae 100644
--- a/build-aux/link-warning.h
+++ b/build-aux/link-warning.h
@@ -1,3 +1,20 @@
+/* A C macro for emitting link time warnings.
+   Copyright (C) 1995, 1997, 2000, 2002-2003, 2007, 2009 Free Software
+   Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify it
+   under the terms of the GNU Lesser General Public License as published
+   by the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
 /* GL_LINK_WARNING("literal string") arranges to emit the literal string as
    a linker warning on most glibc systems.
    We use a linker warning rather than a preprocessor warning, because
diff --git a/modules/arpa_inet b/modules/arpa_inet
index 2105217b04..7eb9cc0567 100644
--- a/modules/arpa_inet
+++ b/modules/arpa_inet
@@ -19,7 +19,7 @@ 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
+arpa/inet.h: arpa_inet.in.h $(LINK_WARNING_H)
 	$(AM_V_at)$(MKDIR_P) arpa
 	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
diff --git a/modules/dirent b/modules/dirent
index d21cfafbda..110ec4520a 100644
--- a/modules/dirent
+++ b/modules/dirent
@@ -18,7 +18,7 @@ BUILT_SOURCES += $(DIRENT_H)
 
 # We need the following in order to create <dirent.h> when the system
 # doesn't have one that works with the given compiler.
-dirent.h: dirent.in.h
+dirent.h: dirent.in.h $(LINK_WARNING_H)
 	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
diff --git a/modules/fcntl-h b/modules/fcntl-h
index ea76181b43..eb5cce11dd 100644
--- a/modules/fcntl-h
+++ b/modules/fcntl-h
@@ -19,7 +19,7 @@ BUILT_SOURCES += $(FCNTL_H)
 
 # We need the following in order to create <fcntl.h> when the system
 # doesn't have one that works with the given compiler.
-fcntl.h: fcntl.in.h
+fcntl.h: fcntl.in.h $(LINK_WARNING_H)
 	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
diff --git a/modules/getopt-posix b/modules/getopt-posix
index 94932fcc00..0a6ee88b0c 100644
--- a/modules/getopt-posix
+++ b/modules/getopt-posix
@@ -22,7 +22,7 @@ BUILT_SOURCES += $(GETOPT_H)
 
 # We need the following in order to create <getopt.h> when the system
 # doesn't have one that works with the given compiler.
-getopt.h: getopt.in.h
+getopt.h: getopt.in.h $(LINK_WARNING_H)
 	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
 	  sed -e 's|@''HAVE_GETOPT_H''@|$(HAVE_GETOPT_H)|g' \
diff --git a/modules/inttypes b/modules/inttypes
index fc97cd613a..8c341f46d0 100644
--- a/modules/inttypes
+++ b/modules/inttypes
@@ -20,7 +20,7 @@ BUILT_SOURCES += $(INTTYPES_H)
 
 # We need the following in order to create <inttypes.h> when the system
 # doesn't have one that works with the given compiler.
-inttypes.h: inttypes.in.h
+inttypes.h: inttypes.in.h $(LINK_WARNING_H)
 	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
 	  sed -e 's/@''HAVE_INTTYPES_H''@/$(HAVE_INTTYPES_H)/g' \
diff --git a/modules/link-warning b/modules/link-warning
index 5d702a7e82..33085b768f 100644
--- a/modules/link-warning
+++ b/modules/link-warning
@@ -9,7 +9,14 @@ Depends-on:
 configure.ac:
 
 Makefile.am:
-LINK_WARNING_H=$(top_srcdir)/build-aux/link-warning.h
+BUILT_SOURCES += link-warning.h
+link-warning.h: $(top_srcdir)/build-aux/link-warning.h
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	sed 1,17d < $(top_srcdir)/build-aux/link-warning.h > $@-t && \
+	mv $@-t $@
+MOSTLYCLEANFILES += link-warning.h link-warning.h-t
+
+LINK_WARNING_H=link-warning.h
 
 Include:
 
diff --git a/modules/math b/modules/math
index cdbe810513..37a544e546 100644
--- a/modules/math
+++ b/modules/math
@@ -17,7 +17,7 @@ BUILT_SOURCES += math.h
 
 # We need the following in order to create <math.h> when the system
 # doesn't have one that works with the given compiler.
-math.h: math.in.h
+math.h: math.in.h $(LINK_WARNING_H)
 	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
 	  sed -e 's|@''INCLUDE_NEXT_AS_FIRST_DIRECTIVE''@|$(INCLUDE_NEXT_AS_FIRST_DIRECTIVE)|g' \
diff --git a/modules/search b/modules/search
index ff1d9b541a..f7a58ebf65 100644
--- a/modules/search
+++ b/modules/search
@@ -17,7 +17,7 @@ BUILT_SOURCES += search.h
 
 # We need the following in order to create <search.h> when the system
 # doesn't have one that works with the given compiler.
-search.h: search.in.h
+search.h: search.in.h $(LINK_WARNING_H)
 	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
 	  sed -e 's|@''HAVE_SEARCH_H''@|$(HAVE_SEARCH_H)|g' \
diff --git a/modules/signal b/modules/signal
index 6e37b150b8..42b543e332 100644
--- a/modules/signal
+++ b/modules/signal
@@ -17,7 +17,7 @@ BUILT_SOURCES += signal.h
 
 # We need the following in order to create <signal.h> when the system
 # doesn't have a complete one.
-signal.h: signal.in.h
+signal.h: signal.in.h $(LINK_WARNING_H)
 	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
diff --git a/modules/spawn b/modules/spawn
index 55c17f6e10..0fe7f83662 100644
--- a/modules/spawn
+++ b/modules/spawn
@@ -18,7 +18,7 @@ BUILT_SOURCES += $(SPAWN_H)
 
 # We need the following in order to create a replacement for <spawn.h> when
 # the system doesn't have one.
-spawn.h: spawn.in.h
+spawn.h: spawn.in.h $(LINK_WARNING_H)
 	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
 	  sed -e 's|@''HAVE_SPAWN_H''@|$(HAVE_SPAWN_H)|g' \
diff --git a/modules/stdio b/modules/stdio
index 8b6e050e37..06e7865ca5 100644
--- a/modules/stdio
+++ b/modules/stdio
@@ -20,7 +20,7 @@ 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
+stdio.h: stdio.in.h $(LINK_WARNING_H)
 	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
diff --git a/modules/stdlib b/modules/stdlib
index ddf2b7ac30..c272737706 100644
--- a/modules/stdlib
+++ b/modules/stdlib
@@ -20,7 +20,7 @@ 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
+stdlib.h: stdlib.in.h $(LINK_WARNING_H)
 	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
diff --git a/modules/string b/modules/string
index 652a88e741..bd9505ec34 100644
--- a/modules/string
+++ b/modules/string
@@ -19,7 +19,7 @@ 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
+string.h: string.in.h $(LINK_WARNING_H)
 	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
diff --git a/modules/strings b/modules/strings
index f0375aeacf..673d75d34f 100644
--- a/modules/strings
+++ b/modules/strings
@@ -17,7 +17,7 @@ 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
+strings.h: strings.in.h $(LINK_WARNING_H)
 	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
diff --git a/modules/sys_ioctl b/modules/sys_ioctl
index 170c67452e..5ae8c84369 100644
--- a/modules/sys_ioctl
+++ b/modules/sys_ioctl
@@ -19,7 +19,7 @@ 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
+sys/ioctl.h: sys_ioctl.in.h $(LINK_WARNING_H)
 	$(AM_V_at)$(MKDIR_P) sys
 	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
diff --git a/modules/sys_select b/modules/sys_select
index 698de84847..093e5e5e77 100644
--- a/modules/sys_select
+++ b/modules/sys_select
@@ -20,7 +20,7 @@ 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
+sys/select.h: sys_select.in.h $(LINK_WARNING_H)
 	$(AM_V_at)$(MKDIR_P) sys
 	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
diff --git a/modules/sys_socket b/modules/sys_socket
index 573ace7246..72d39596f3 100644
--- a/modules/sys_socket
+++ b/modules/sys_socket
@@ -21,7 +21,7 @@ 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
+sys/socket.h: sys_socket.in.h $(LINK_WARNING_H)
 	$(AM_V_at)$(MKDIR_P) sys
 	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
diff --git a/modules/sys_stat b/modules/sys_stat
index 20a8c83bf9..33ffe4a9a2 100644
--- a/modules/sys_stat
+++ b/modules/sys_stat
@@ -20,7 +20,7 @@ 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
+sys/stat.h: sys_stat.in.h $(LINK_WARNING_H)
 	$(AM_V_at)$(MKDIR_P) sys
 	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
diff --git a/modules/sys_times b/modules/sys_times
index f91f6fcaac..b8b141d6f1 100644
--- a/modules/sys_times
+++ b/modules/sys_times
@@ -17,7 +17,7 @@ BUILT_SOURCES += $(SYS_TIMES_H)
 
 # We need the following in order to create <sys/times.h> when the system
 # doesn't have one that works with the given compiler.
-sys/times.h: sys_times.in.h
+sys/times.h: sys_times.in.h $(LINK_WARNING_H)
 	$(AM_V_at)$(MKDIR_P) sys
 	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
diff --git a/modules/sys_utsname b/modules/sys_utsname
index e5c4e8a108..2bbeb7e0bd 100644
--- a/modules/sys_utsname
+++ b/modules/sys_utsname
@@ -17,7 +17,7 @@ BUILT_SOURCES += $(SYS_UTSNAME_H)
 
 # We need the following in order to create <sys/utsname.h> when the system
 # does not have one.
-sys/utsname.h: sys_utsname.in.h
+sys/utsname.h: sys_utsname.in.h $(LINK_WARNING_H)
 	$(AM_V_at)$(MKDIR_P) sys
 	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
diff --git a/modules/sys_wait b/modules/sys_wait
index 9b74ea8a7e..210b21638b 100644
--- a/modules/sys_wait
+++ b/modules/sys_wait
@@ -18,7 +18,7 @@ BUILT_SOURCES += $(SYS_WAIT_H)
 
 # We need the following in order to create <sys/wait.h> when the system
 # has one that is incomplete.
-sys/wait.h: sys_wait.in.h
+sys/wait.h: sys_wait.in.h $(LINK_WARNING_H)
 	$(AM_V_at)$(MKDIR_P) sys
 	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
diff --git a/modules/unistd b/modules/unistd
index 7a5500101e..8e7382d2b4 100644
--- a/modules/unistd
+++ b/modules/unistd
@@ -18,7 +18,7 @@ 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
+unistd.h: unistd.in.h $(LINK_WARNING_H)
 	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
 	  sed -e 's|@''HAVE_UNISTD_H''@|$(HAVE_UNISTD_H)|g' \
diff --git a/modules/wchar b/modules/wchar
index f6d02ec765..d6dbfd5ef7 100644
--- a/modules/wchar
+++ b/modules/wchar
@@ -19,7 +19,7 @@ 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
+wchar.h: wchar.in.h $(LINK_WARNING_H)
 	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \