Re: add license to link-warning.h

[Bruno Haible]

Hi Simon,

> Bruno, what do you think?  For rationale, I got a comment in
> https://savannah.gnu.org/task/?9954 that link-warning.h lacked licensing
> information.

With the coding guideline that every file should have a copyright statement,
and the license audits that they do in Debian, I nearly saw this coming ;-)

> +2009-12-08  Simon Josefsson  <address@hidden>
> +
> +     * build-aux/link-warning.h: Add license header.
> +

It takes a bit more than this, because we don't want the generated unistd.h
etc. files to contain two - possibly contradicting - copyright notices. So
the copyright notice of link-warning.h has to be removed at the moment the
contents is included in unistd.h etc.

I'm applying this:


2009-12-09  Simon Josefsson <address@hidden>
            Bruno Haible  <address@hidden>

        * 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.

--- NEWS.orig   2009-12-09 12:38:14.000000000 +0100
+++ NEWS        2009-12-09 12:27:26.000000000 +0100
@@ -6,6 +6,10 @@
 
 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.
--- build-aux/link-warning.h.orig       2009-12-09 12:38:14.000000000 +0100
+++ build-aux/link-warning.h    2009-12-09 12:22:40.000000000 +0100
@@ -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
--- modules/link-warning.orig   2009-12-09 12:38:14.000000000 +0100
+++ modules/link-warning        2009-12-09 12:31:05.000000000 +0100
@@ -9,7 +9,14 @@
 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 address@hidden $@ && \
+       sed 1,17d < $(top_srcdir)/build-aux/link-warning.h > address@hidden && \
+       mv address@hidden $@
+MOSTLYCLEANFILES += link-warning.h link-warning.h-t
+
+LINK_WARNING_H=link-warning.h
 
 Include:
 
--- modules/arpa_inet.orig      2009-12-09 12:38:14.000000000 +0100
+++ modules/arpa_inet   2009-12-09 12:27:38.000000000 +0100
@@ -19,7 +19,7 @@
 
 # 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 address@hidden $@ && \
        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
--- modules/dirent.orig 2009-12-09 12:38:14.000000000 +0100
+++ modules/dirent      2009-12-09 12:27:38.000000000 +0100
@@ -18,7 +18,7 @@
 
 # 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 address@hidden $@ && \
        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
          sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
--- modules/fcntl-h.orig        2009-12-09 12:38:14.000000000 +0100
+++ modules/fcntl-h     2009-12-09 12:27:39.000000000 +0100
@@ -19,7 +19,7 @@
 
 # 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 address@hidden $@ && \
        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
          sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
--- modules/getopt-posix.orig   2009-12-09 12:38:14.000000000 +0100
+++ modules/getopt-posix        2009-12-09 12:27:39.000000000 +0100
@@ -22,7 +22,7 @@
 
 # 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 address@hidden $@ && \
        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
          sed -e 's|@''HAVE_GETOPT_H''@|$(HAVE_GETOPT_H)|g' \
--- modules/inttypes.orig       2009-12-09 12:38:14.000000000 +0100
+++ modules/inttypes    2009-12-09 12:27:39.000000000 +0100
@@ -20,7 +20,7 @@
 
 # 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 address@hidden $@ && \
        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
          sed -e 's/@''HAVE_INTTYPES_H''@/$(HAVE_INTTYPES_H)/g' \
--- modules/math.orig   2009-12-09 12:38:15.000000000 +0100
+++ modules/math        2009-12-09 12:27:39.000000000 +0100
@@ -17,7 +17,7 @@
 
 # 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 address@hidden $@ && \
        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
          sed -e 
's|@''INCLUDE_NEXT_AS_FIRST_DIRECTIVE''@|$(INCLUDE_NEXT_AS_FIRST_DIRECTIVE)|g' \
--- modules/search.orig 2009-12-09 12:38:15.000000000 +0100
+++ modules/search      2009-12-09 12:27:39.000000000 +0100
@@ -17,7 +17,7 @@
 
 # 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 address@hidden $@ && \
        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
          sed -e 's|@''HAVE_SEARCH_H''@|$(HAVE_SEARCH_H)|g' \
--- modules/signal.orig 2009-12-09 12:38:15.000000000 +0100
+++ modules/signal      2009-12-09 12:27:38.000000000 +0100
@@ -17,7 +17,7 @@
 
 # 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 address@hidden $@ && \
        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
          sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
--- modules/spawn.orig  2009-12-09 12:38:15.000000000 +0100
+++ modules/spawn       2009-12-09 12:27:39.000000000 +0100
@@ -18,7 +18,7 @@
 
 # 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 address@hidden $@ && \
        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
          sed -e 's|@''HAVE_SPAWN_H''@|$(HAVE_SPAWN_H)|g' \
--- modules/stdio.orig  2009-12-09 12:38:15.000000000 +0100
+++ modules/stdio       2009-12-09 12:27:39.000000000 +0100
@@ -20,7 +20,7 @@
 
 # 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 address@hidden $@ && \
        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
          sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
--- modules/stdlib.orig 2009-12-09 12:38:15.000000000 +0100
+++ modules/stdlib      2009-12-09 12:27:39.000000000 +0100
@@ -20,7 +20,7 @@
 
 # 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 address@hidden $@ && \
        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
          sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
--- modules/string.orig 2009-12-09 12:38:15.000000000 +0100
+++ modules/string      2009-12-09 12:27:39.000000000 +0100
@@ -19,7 +19,7 @@
 
 # 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 address@hidden $@ && \
        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
          sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
--- modules/strings.orig        2009-12-09 12:38:15.000000000 +0100
+++ modules/strings     2009-12-09 12:27:39.000000000 +0100
@@ -17,7 +17,7 @@
 
 # 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 address@hidden $@ && \
        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
          sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
--- modules/sys_ioctl.orig      2009-12-09 12:38:15.000000000 +0100
+++ modules/sys_ioctl   2009-12-09 12:27:39.000000000 +0100
@@ -19,7 +19,7 @@
 
 # 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 address@hidden $@ && \
        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
--- modules/sys_select.orig     2009-12-09 12:38:15.000000000 +0100
+++ modules/sys_select  2009-12-09 12:27:39.000000000 +0100
@@ -20,7 +20,7 @@
 
 # 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 address@hidden $@ && \
        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
--- modules/sys_socket.orig     2009-12-09 12:38:15.000000000 +0100
+++ modules/sys_socket  2009-12-09 12:27:39.000000000 +0100
@@ -21,7 +21,7 @@
 
 # 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 address@hidden $@ && \
        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
--- modules/sys_stat.orig       2009-12-09 12:38:15.000000000 +0100
+++ modules/sys_stat    2009-12-09 12:27:38.000000000 +0100
@@ -20,7 +20,7 @@
 
 # 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 address@hidden $@ && \
        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
--- modules/sys_times.orig      2009-12-09 12:38:15.000000000 +0100
+++ modules/sys_times   2009-12-09 12:27:38.000000000 +0100
@@ -17,7 +17,7 @@
 
 # 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 address@hidden $@ && \
        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
--- modules/sys_utsname.orig    2009-12-09 12:38:15.000000000 +0100
+++ modules/sys_utsname 2009-12-09 12:27:38.000000000 +0100
@@ -17,7 +17,7 @@
 
 # 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 address@hidden $@ && \
        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
--- modules/sys_wait.orig       2009-12-09 12:38:15.000000000 +0100
+++ modules/sys_wait    2009-12-09 12:27:39.000000000 +0100
@@ -18,7 +18,7 @@
 
 # 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 address@hidden $@ && \
        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
--- modules/unistd.orig 2009-12-09 12:38:15.000000000 +0100
+++ modules/unistd      2009-12-09 12:27:39.000000000 +0100
@@ -18,7 +18,7 @@
 
 # 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 address@hidden $@ && \
        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
          sed -e 's|@''HAVE_UNISTD_H''@|$(HAVE_UNISTD_H)|g' \
--- modules/wchar.orig  2009-12-09 12:38:15.000000000 +0100
+++ modules/wchar       2009-12-09 12:27:38.000000000 +0100
@@ -19,7 +19,7 @@
 
 # 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 address@hidden $@ && \
        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
          sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \