The mingw trick of using __USE_MINGW_ANSI_STDIO only changes the
definitions in <inttypes.h> if <stdio.h> is also included.  But
since we want to always use the __gnu_printf__ flavor when
available, we want to make sure that including <inttypes.h> in
isolation will give the desired "lld" answer.

Reported by Assaf Gordon.

* modules/inttypes (Depends-on): Require extensions, so that mingw
always uses GNU style inttypes.
* lib/inttypes.in.h: On mingw, include <stdio.h>.

Signed-off-by: Eric Blake <eblake@redhat.com>

* m4/inttypes.m4 (gl_INTTYPES_INCOMPLETE): New macro, containing
all but the PRI* and SCN* parts of gl_INTTYPES_H.
(gl_INTTYPES_PRI_SCN): New macro, containing the PRI* and SCN* parts
of gl_INTTYPES_H.
(gl_INTTYPES_H): Rewrite in terms of these new macros.
(gl_INTTYPES_H_DEFAULTS): Provide defaults for the PRI* and SCN*
parts, in case gl_INTTYPE_PRI_SCN is not invoked.
* modules/imaxabs, modules/imaxdiv, modules/strtoimax (Depends-on):
* modules/strtoumax, modules/xstrtol (Depends-on):
Depend on inttypes-incomplete, not inttypes.
* modules/inttypes-incomplete: New module, containing the contents
of the old modules/inttypes module, except that the Files: section
omits m4/inttypes-pri.m4, and the configure.ac section invokes
gl_INTTYPES_INCOMPLETE rather than gl_INTTYPES_H.
* modules/inttypes (Files): Remove lib/inttypes.in.h, m4/inttypes.m4.
(Depends-on): Depend only on inttypes-incomplete.
(Makefile.am): Remove everything; this is now in inttypes-incomplete.

* modules/arpa_inet (Makefile.am): Add dependency from .h file to
config.status.
* modules/ctype (Makefile.am): Likewise.
* modules/dirent (Makefile.am): Likewise.
* modules/errno (Makefile.am): Likewise.
* modules/fcntl-h (Makefile.am): Likewise.
* modules/float (Makefile.am): Likewise.
* modules/getopt-posix (Makefile.am): Likewise.
* modules/glob (Makefile.am): Likewise.
* modules/iconv-h (Makefile.am): Likewise.
* modules/inttypes (Makefile.am): Likewise.
* modules/langinfo (Makefile.am): Likewise.
* modules/locale (Makefile.am): Likewise.
* modules/math (Makefile.am): Likewise.
* modules/netdb (Makefile.am): Likewise.
* modules/netinet_in (Makefile.am): Likewise.
* modules/poll-h (Makefile.am): Likewise.
* modules/pthread (Makefile.am): Likewise.
* modules/pty (Makefile.am): Likewise.
* modules/sched (Makefile.am): Likewise.
* modules/search (Makefile.am): Likewise.
* modules/selinux-h (Makefile.am): Likewise.
* modules/signal (Makefile.am): Likewise.
* modules/spawn (Makefile.am): Likewise.
* modules/stdarg (Makefile.am): Likewise.
* modules/stdbool (Makefile.am): Likewise.
* modules/stddef (Makefile.am): Likewise.
* modules/stdint (Makefile.am): Likewise.
* modules/stdio (Makefile.am): Likewise.
* modules/stdlib (Makefile.am): Likewise.
* modules/string (Makefile.am): Likewise.
* modules/strings (Makefile.am): Likewise.
* modules/sys_file (Makefile.am): Likewise.
* modules/sys_ioctl (Makefile.am): Likewise.
* modules/sys_select (Makefile.am): Likewise.
* modules/sys_socket (Makefile.am): Likewise.
* modules/sys_stat (Makefile.am): Likewise.
* modules/sys_time (Makefile.am): Likewise.
* modules/sys_times (Makefile.am): Likewise.
* modules/sys_utsname (Makefile.am): Likewise.
* modules/sys_wait (Makefile.am): Likewise.
* modules/sysexits (Makefile.am): Likewise.
* modules/termios (Makefile.am): Likewise.
* modules/time (Makefile.am): Likewise.
* modules/unistd (Makefile.am): Likewise.
* modules/wchar (Makefile.am): Likewise.
* modules/wctype-h (Makefile.am): Likewise.
Reported by Karl Berry, Eric Blake, and Ralf Wildenhues.

Back out yesterday's big merge from the libposix branch, except for the
openat-die.c change that was reviewed and approved by Paul Eggert.
Put the ChangeLog entry at the top, to reflect the order of changes in the
master branch.

Modify gnulib-tool to strip them from generated Makefile.am-s where
they are not needed.  Also, replace M4 macro prefixes when requested.
Finally, omit calls to error() for libposix.

* m4/include_next.m4 (gl_INCLUDE_NEXT): Define also PRAGMA_COLUMNS.
* lib/arpa_inet.in.h: Use PRAGMA_COLUMNS.
* lib/ctype.in.h: Likewise.
* lib/dirent.in.h: Likewise.
* lib/errno.in.h: Likewise.
* lib/fcntl.in.h: Likewise.
* lib/float.in.h: Likewise.
* lib/getopt.in.h: Likewise.
* lib/iconv.in.h: Likewise.
* lib/inttypes.in.h: Likewise.
* lib/langinfo.in.h: Likewise.
* lib/locale.in.h: Likewise.
* lib/math.in.h: Likewise.
* lib/netdb.in.h: Likewise.
* lib/netinet_in.in.h: Likewise.
* lib/poll.in.h: Likewise.
* lib/pthread.in.h: Likewise.
* lib/pty.in.h: Likewise.
* lib/sched.in.h: Likewise.
* lib/se-selinux.in.h: Likewise.
* lib/search.in.h: Likewise.
* lib/signal.in.h: Likewise.
* lib/spawn.in.h: Likewise.
* lib/stdarg.in.h: Likewise.
* lib/stddef.in.h: Likewise.
* lib/stdint.in.h: Likewise.
* lib/stdio.in.h: Likewise.
* lib/stdlib.in.h: Likewise.
* lib/string.in.h: Likewise.
* lib/strings.in.h: Likewise.
* lib/sys_file.in.h: Likewise.
* lib/sys_ioctl.in.h: Likewise.
* lib/sys_select.in.h: Likewise.
* lib/sys_socket.in.h: Likewise.
* lib/sys_stat.in.h: Likewise.
* lib/sys_time.in.h: Likewise.
* lib/sys_times.in.h: Likewise.
* lib/sys_utsname.in.h: Likewise.
* lib/sys_wait.in.h: Likewise.
* lib/sysexits.in.h: Likewise.
* lib/termios.in.h: Likewise.
* lib/time.in.h: Likewise.
* lib/unistd.in.h: Likewise.
* lib/wchar.in.h: Likewise.
* lib/wctype.in.h: Likewise.
* modules/arpa_inet (Makefile.am): Substitute PRAGMA_COLUMNS.
* modules/ctype (Makefile.am): Likewise.
* modules/dirent (Makefile.am): Likewise.
* modules/errno (Makefile.am): Likewise.
* modules/fcntl-h (Makefile.am): Likewise.
* modules/float (Makefile.am): Likewise.
* modules/getopt-posix (Makefile.am): Likewise.
* modules/iconv-h (Makefile.am): Likewise.
* modules/inttypes (Makefile.am): Likewise.
* modules/langinfo (Makefile.am): Likewise.
* modules/locale (Makefile.am): Likewise.
* modules/math (Makefile.am): Likewise.
* modules/netdb (Makefile.am): Likewise.
* modules/netinet_in (Makefile.am): Likewise.
* modules/poll-h (Makefile.am): Likewise.
* modules/pthread (Makefile.am): Likewise.
* modules/pty (Makefile.am): Likewise.
* modules/sched (Makefile.am): Likewise.
* modules/search (Makefile.am): Likewise.
* modules/selinux-h (Makefile.am): Likewise.
* modules/signal (Makefile.am): Likewise.
* modules/spawn (Makefile.am): Likewise.
* modules/stdarg (Makefile.am): Likewise.
* modules/stddef (Makefile.am): Likewise.
* modules/stdint (Makefile.am): Likewise.
* modules/stdio (Makefile.am): Likewise.
* modules/stdlib (Makefile.am): Likewise.
* modules/string (Makefile.am): Likewise.
* modules/strings (Makefile.am): Likewise.
* modules/sys_file (Makefile.am): Likewise.
* modules/sys_ioctl (Makefile.am): Likewise.
* modules/sys_select (Makefile.am): Likewise.
* modules/sys_socket (Makefile.am): Likewise.
* modules/sys_stat (Makefile.am): Likewise.
* modules/sys_time (Makefile.am): Likewise.
* modules/sys_times (Makefile.am): Likewise.
* modules/sys_utsname (Makefile.am): Likewise.
* modules/sys_wait (Makefile.am): Likewise.
* modules/sysexits (Makefile.am): Likewise.
* modules/termios (Makefile.am): Likewise.
* modules/time (Makefile.am): Likewise.
* modules/unistd (Makefile.am): Likewise.
* modules/wchar (Makefile.am): Likewise.
* modules/wctype (Makefile.am): Likewise.

* modules/inttypes (License): Relax license.

Each *.in.h file serves two purposes - provide enough self-contained
content to serve as a replacement for the system header regardless of
the user's compiler, and offer the developer the ability to detect any
gnulib modules that might have been inadvertantly excluded.  The
former requires independence from config.h, and routes everything
through a Makefile.am snippet that uses @@ substitution specific to
the modules that were in use, with details learned at configure time.

The latter works by poisoning anything that gnulib did not replace,
but which the developer had natively available, explaining why their
tests passed during development.  Poisoning relies on gcc features,
and requires manual triggering by adding -DGNULIB_POSIXCHECK to
CFLAGS; it assumes that <config.h> is properly included.  In fact, we
do not want to use @@ substitution for HAVE_DECL_* during poisoning,
because the warning is only relevant for the gnulib modules which were
not included, and thus where the m4 macros to set proper @@ values
have not been run.  Furthermore, we only need to poison interfaces
that already have a declaration; if something is not declared, then
the developer wouldn't have been able to link, so their code won't be
using the problematic interface in the first place.

* modules/stdio (Depends-on, Makefile.am): Drop link-warning.
* modules/unistd (Depends-on, Makefile.am): Likewise.
* modules/arpa_inet (Depends-on): Replace link-warning with
warn-on-use.
(Makefile.am): Update rules accordingly.
* modules/ctype (Depends-on, Makefile.am): Likewise.
* modules/dirent (Depends-on, Makefile.am): Likewise.
* modules/fcntl-h (Depends-on, Makefile.am): Likewise.
* modules/inttypes (Depends-on, Makefile.am): Likewise.
* modules/langinfo (Depends-on, Makefile.am): Likewise.
* modules/locale (Depends-on, Makefile.am): Likewise.
* modules/math (Depends-on, Makefile.am): Likewise.
* modules/search (Depends-on, Makefile.am): Likewise.
* modules/signal (Depends-on, Makefile.am): Likewise.
* modules/spawn (Depends-on, Makefile.am): Likewise.
* modules/stdlib (Depends-on, Makefile.am): Likewise.
* modules/string (Depends-on, Makefile.am): Likewise.
* modules/strings (Depends-on, Makefile.am): Likewise.
* modules/sys_file (Depends-on, Makefile.am): Likewise.
* modules/sys_ioctl (Depends-on, Makefile.am): Likewise.
* modules/sys_select (Depends-on, Makefile.am): Likewise.
* modules/sys_socket (Depends-on, Makefile.am): Likewise.
* modules/sys_stat (Depends-on, Makefile.am): Likewise.
* modules/sys_times (Depends-on, Makefile.am): Likewise.
* modules/sys_utsname (Depends-on, Makefile.am): Likewise.
* modules/wchar (Depends-on, Makefile.am): Likewise.
* m4/arpa_inet_h.m4 (gl_HEADER_ARPA_INET): Check which functions
should be poisoned.
* m4/ctype.m4 (gl_CTYPE_H): Likewise.
* m4/dirent_h.m4 (gl_DIRENT_H): Likewise.
* m4/fcntl_h.m4 (gl_FCNTL_H): Likewise.
* m4/inttypes.m4 (gl_INTTYPES_H): Likewise.
* m4/langinfo_h.m4 (gl_LANGINFO_H): Likewise.
* m4/locale_h.m4 (gl_LOCALE_H): Likewise.
* m4/math_h.m4 (gl_MATH_H): Likewise.
* m4/search_h.m4 (gl_SEARCH_H): Likewise.
* m4/signal_h.m4 (gl_SIGNAL_H): Likewise.
* m4/spawn_h.m4 (gl_SPAWN_H): Likewise.
* m4/stdio_h.m4 (gl_STDIO_H): Likewise.
* m4/stdlib_h.m4 (gl_STDLIB_H): Likewise.
* m4/string_h.m4 (gl_HEADER_STRING_H_BODY): Likewise.
* m4/strings_h.m4 (gl_HEADER_STRINGS_H_BODY): Likewise.
* m4/sys_file_h.m4 (gl_HEADER_SYS_FILE_H_DEFAULTS): Likewise.
* m4/sys_ioctl_h.m4 (gl_SYS_IOCTL_H): Likewise.
* m4/sys_select_h.m4 (gl_HEADER_SYS_SELECT): Likewise.
* m4/sys_socket_h.m4 (gl_HEADER_SYS_SOCKET): Likewise.
* m4/sys_stat_h.m4 (gl_HEADER_SYS_STAT_H): Likewise.
* m4/sys_times_h.m4 (gl_SYS_TIMES_H): Likewise.
* m4/sys_utsname_h.m4 (gl_SYS_UTSNAME_H): Likewise.
* m4/unistd_h.m4 (gl_UNISTD_H): Likewise.
* m4/wchar.m4 (gl_WCHAR_H): Likewise.
* lib/arpa_inet.in.h: Use _GL_WARN_ON_USE instead of
GL_LINK_WARNING.
* lib/ctype.in.h: Likewise.
* lib/dirent.in.h: Likewise.
* lib/fcntl.in.h: Likewise.
* lib/inttypes.in.h: Likewise.
* lib/langinfo.in.h: Likewise.
* lib/locale.in.h: Likewise.
* lib/math.in.h: Likewise.
* lib/search.in.h: Likewise.
* lib/signal.in.h: Likewise.
* lib/spawn.in.h: Likewise.
* lib/stdio.in.h: Likewise.
* lib/stdlib.in.h: Likewise.
* lib/string.in.h: Likewise.
* lib/strings.in.h: Likewise.
* lib/sys_file.in.h: Likewise.
* lib/sys_ioctl.in.h: Likewise.
* lib/sys_select.in.h: Likewise.
* lib/sys_socket.in.h: Likewise.
* lib/sys_stat.in.h: Likewise.
* lib/sys_times.in.h: Likewise.
* lib/sys_utsname.in.h: Likewise.
* lib/unistd.in.h: Likewise.
* lib/wchar.in.h: Likewise.

Signed-off-by: Eric Blake <ebb9@byu.net>

Replacement headers must be built unconditionally if they use
GL_LINK_WARNING, if the warning is to ever trigger on a
glibc system during CFLAGS=-DGNULIB_POSIXCHECK.

* modules/arpa_inet (Makefile.am): Always build replacement
header.
* modules/ctype (Makefile.am): Likewise.
* modules/dirent (Makefile.am): Likewise.
* modules/inttypes (Makefile.am): Likewise.
* modules/langinfo (Makefile.am): Likewise.
* modules/locale (Makefile.am): Likewise.
* modules/spawn (Makefile.am): Likewise.
* modules/sys_file (Makefile.am): Likewise.
* modules/sys_ioctl (Makefile.am): Likewise.
* modules/sys_select (Makefile.am): Likewise.
* modules/sys_socket (Makefile.am): Likewise.
* modules/sys_times (Makefile.am): Likewise.
* modules/sys_utsname (Makefile.am): Likewise.
* modules/sys_wait (Makefile.am): Likewise.
* modules/wchar (Makefile.am): Likewise.
* m4/arpa_inet_h.m4 (gl_HEADER_ARPA_INET)
(gl_ARPA_INET_H_DEFAULTS): Drop unneeded variable.
* m4/ctype.m4 (gl_CTYPE_H_DEFAULTS): Likewise.
* m4/isblank.m4 (gl_FUNC_ISBLANK): Likewise.
* m4/dirent_h.m4 (gl_REPLACE_DIRENT_H, gl_DIRENT_H_DEFAULTS):
Likewise.
* m4/inttypes.m4 (gl_INTTYPES_H): Likewise.
* m4/langinfo_h.m4 (gl_LANGINFO_H): Likewise.
* m4/locale_h.m4 (gl_REPLACE_LOCALE_H, gl_LOCALE_H_DEFAULTS):
Likewise.
* m4/spawn_h.m4 (gl_REPLACE_SPAWN_H, gl_SPAWN_H_DEFAULTS):
Likewise.
* m4/sys_file_h.m4 (gl_HEADER_SYS_FILE_H): Likewise.
* m4/sys_ioctl_h.m4 (gl_SYS_IOCTL_H, gl_REPLACE_SYS_IOCTL_H)
(gl_SYS_IOCTL_H_DEFAULTS): Likewise.
* m4/sys_select_h.m4 (gl_HEADER_SYS_SELECT): Likewise.
* m4/sys_times_h.m4 (gl_SYS_TIMES_H): Likewise.
* m4/sys_utsname_h.m4 (gl_SYS_UTSNAME_H)
(gl_SYS_UTSNAME_H_DEFAULTS): Likewise.
* m4/wchar.m4 (gl_WCHAR_H, gl_REPLACE_WCHAR_H)
(gl_WCHAR_H_DEFAULTS): Likewise.