Merge from gnulib (Bug#26398)

This incorporates:
2017-04-08 getopt: prefer - to _ in new file names
2017-04-08 getopt: port recent getopt changes to macOS
* .gitignore: Add lib/getopt-cdefs.h.
* lib/getopt-cdefs.in.h: Rename from lib/getopt_cdefs.in.h.
* lib/getopt-core.h: Rename from lib/getopt_core.h.
* lib/getopt-ext.h: Rename from lib/getopt_ext.h.
* lib/getopt-pfx-core.h: Rename from lib/getopt_pfx_core.h.
* lib/getopt-pfx-ext.h: Rename from lib/getopt_pfx_ext.h.
* lib/getopt.in.h, lib/unistd.in.h, m4/getopt.m4:
Copy from Gnulib.
* lib/gnulib.mk.in, m4/gnulib-comp.m4: Regenerate.

11 files changed, 42 insertions, 45 deletions

diff --git a/.gitignore b/.gitignore
index aa9e1ff709e..fa9353453ce 100644
--- a/.gitignore
+++ b/.gitignore
@@ -56,6 +56,7 @@ lib/errno.h
 lib/execinfo.h
 lib/fcntl.h
 lib/getopt.h
+lib/getopt-cdefs.h
 lib/inttypes.h
 lib/libgnu.a
 lib/limits.h
diff --git a/lib/getopt_cdefs.in.h b/lib/getopt-cdefs.in.h
index 18f9fb4f98a..c71a4f11f64 100644
--- a/lib/getopt_cdefs.in.h
+++ b/lib/getopt-cdefs.in.h
@@ -25,7 +25,7 @@
    unistd.h instead.  It does not have a protective #error, because
    the guard macro for getopt.h in gnulib is not fixed.  */
 
-/* getopt_core.h and getopt_ext.h are shared with GNU libc, and expect
+/* getopt-core.h and getopt-ext.h are shared with GNU libc, and expect
    a number of the internal macros supplied to GNU libc's headers by
    sys/cdefs.h.  Provide fallback definitions for all of them.  */
 #if @HAVE_SYS_CDEFS_H@
@@ -64,12 +64,4 @@
 # endif
 #endif
 
-#ifndef __nonnull
-# if __GNUC_PREREQ (3,3)
-#  define __nonnull(params) __attribute__ ((__nonnull__ params))
-# else
-#  define __nonnull(params)
-# endif
-#endif
-
-#endif /* getopt_cdefs.h */
+#endif /* _GETOPT_CDEFS_H */
diff --git a/lib/getopt_core.h b/lib/getopt-core.h
index d6ef8a6b782..d315891aefd 100644
--- a/lib/getopt_core.h
+++ b/lib/getopt-core.h
@@ -89,8 +89,8 @@ extern int optopt;
    writable.  */
 
 extern int getopt (int ___argc, char *const *___argv, const char *__shortopts)
-       __THROW __nonnull ((2, 3));
+       __THROW _GL_ARG_NONNULL ((2, 3));
 
 __END_DECLS
 
-#endif /* getopt_core.h */
+#endif /* _GETOPT_CORE_H */
diff --git a/lib/getopt_ext.h b/lib/getopt-ext.h
index 79b7a670d58..e4da22f54f5 100644
--- a/lib/getopt_ext.h
+++ b/lib/getopt-ext.h
@@ -66,12 +66,12 @@ struct option
 extern int getopt_long (int ___argc, char *__getopt_argv_const *___argv,
 			const char *__shortopts,
 		        const struct option *__longopts, int *__longind)
-       __THROW __nonnull ((2, 3));
+       __THROW _GL_ARG_NONNULL ((2, 3));
 extern int getopt_long_only (int ___argc, char *__getopt_argv_const *___argv,
 			     const char *__shortopts,
 		             const struct option *__longopts, int *__longind)
-       __THROW __nonnull ((2, 3));
+       __THROW _GL_ARG_NONNULL ((2, 3));
 
 __END_DECLS
 
-#endif /* getopt_ext.h */
+#endif /* _GETOPT_EXT_H */
diff --git a/lib/getopt_pfx_core.h b/lib/getopt-pfx-core.h
index d585a08ce9f..4dc427dc3ef 100644
--- a/lib/getopt_pfx_core.h
+++ b/lib/getopt-pfx-core.h
@@ -27,7 +27,7 @@
 
 /* Standalone applications should #define __GETOPT_PREFIX to an
    identifier that prefixes the external functions and variables
-   defined in getopt_core.h and getopt_ext.h.  Systematically
+   defined in getopt-core.h and getopt-ext.h.  Systematically
    rename identifiers so that they do not collide with the system
    functions and variables.  Renaming avoids problems with some
    compilers and linkers.  */
@@ -49,6 +49,6 @@
 # define optopt __GETOPT_ID (optopt)
 #endif
 
-#include <getopt_core.h>
+#include <getopt-core.h>
 
-#endif /* getopt_pfx_core.h */
+#endif /* _GETOPT_PFX_CORE_H */
diff --git a/lib/getopt_pfx_ext.h b/lib/getopt-pfx-ext.h
index 3da156a09ba..bc6052a1dd1 100644
--- a/lib/getopt_pfx_ext.h
+++ b/lib/getopt-pfx-ext.h
@@ -27,7 +27,7 @@
 
 /* Standalone applications should #define __GETOPT_PREFIX to an
    identifier that prefixes the external functions and variables
-   defined in getopt_core.h and getopt_ext.h.  Systematically
+   defined in getopt-core.h and getopt-ext.h.  Systematically
    rename identifiers so that they do not collide with the system
    functions and variables.  Renaming avoids problems with some
    compilers and linkers.  */
@@ -59,6 +59,6 @@
 # endif
 #endif
 
-#include <getopt_ext.h>
+#include <getopt-ext.h>
 
-#endif /* getopt_pfx_ext.h */
+#endif /* _GETOPT_PFX_EXT_H */
diff --git a/lib/getopt.in.h b/lib/getopt.in.h
index 91e086c0207..4ce1eb485af 100644
--- a/lib/getopt.in.h
+++ b/lib/getopt.in.h
@@ -38,7 +38,7 @@
 
 /* Standalone applications should #define __GETOPT_PREFIX to an
    identifier that prefixes the external functions and variables
-   defined in getopt_core.h and getopt_ext.h.  When this happens,
+   defined in getopt-core.h and getopt-ext.h.  When this happens,
    include the headers that might declare getopt so that they will not
    cause confusion if included after this file (if the system had
    <getopt.h>, we have already included it).  */
@@ -52,8 +52,10 @@
 # endif
 #endif
 
-#include <getopt_cdefs.h>
-#include <getopt_pfx_core.h>
-#include <getopt_pfx_ext.h>
+/* The definition of _GL_ARG_NONNULL is copied here.  */
+
+#include <getopt-cdefs.h>
+#include <getopt-pfx-core.h>
+#include <getopt-pfx-ext.h>
 
 #endif /* _@GUARD_PREFIX@_GETOPT_H */
diff --git a/lib/gnulib.mk.in b/lib/gnulib.mk.in
index 38adf2a9f76..08f48c2ca38 100644
--- a/lib/gnulib.mk.in
+++ b/lib/gnulib.mk.in
@@ -922,6 +922,7 @@ pdfdir = @pdfdir@
 prefix = @prefix@
 program_transform_name = @program_transform_name@
 psdir = @psdir@
+runstatedir = @runstatedir@
 sbindir = @sbindir@
 sharedstatedir = @sharedstatedir@
 srcdir = @srcdir@
@@ -1527,21 +1528,22 @@ getopt.h: getopt.in.h $(top_builddir)/config.status
 	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
 	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
 	      -e 's|@''NEXT_GETOPT_H''@|$(NEXT_GETOPT_H)|g' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
 	      < $(srcdir)/getopt.in.h; \
 	} > $@-t && \
 	mv -f $@-t $@
 
-getopt_cdefs.h: getopt_cdefs.in.h $(top_builddir)/config.status
+getopt-cdefs.h: getopt-cdefs.in.h $(top_builddir)/config.status
 	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
           sed -e 's|@''HAVE_SYS_CDEFS_H''@|$(HAVE_SYS_CDEFS_H)|g' \
-	      < $(srcdir)/getopt_cdefs.in.h; \
+	      < $(srcdir)/getopt-cdefs.in.h; \
 	} > $@-t && \
 	mv -f $@-t $@
 
-MOSTLYCLEANFILES += getopt.h getopt.h-t getopt_cdefs.h getopt_cdefs.h-t
+MOSTLYCLEANFILES += getopt.h getopt.h-t getopt-cdefs.h getopt-cdefs.h-t
 
-EXTRA_DIST += getopt.c getopt.in.h getopt1.c getopt_cdefs.in.h getopt_core.h getopt_ext.h getopt_int.h getopt_pfx_core.h getopt_pfx_ext.h
+EXTRA_DIST += getopt-cdefs.in.h getopt-core.h getopt-ext.h getopt-pfx-core.h getopt-pfx-ext.h getopt.c getopt.in.h getopt1.c getopt_int.h
 
 EXTRA_libgnu_a_SOURCES += getopt.c getopt1.c
 
diff --git a/lib/unistd.in.h b/lib/unistd.in.h
index ed175bf8f2b..cb9321e502d 100644
--- a/lib/unistd.in.h
+++ b/lib/unistd.in.h
@@ -127,11 +127,18 @@
 # include <sys/types.h>
 #endif
 
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
+
+/* The definition of _GL_ARG_NONNULL is copied here.  */
+
+/* The definition of _GL_WARN_ON_USE is copied here.  */
+
+
 /* Get getopt(), optarg, optind, opterr, optopt.
    But avoid namespace pollution on glibc systems.  */
 #if @GNULIB_UNISTD_H_GETOPT@ && !defined __GLIBC__ && !defined _GL_SYSTEM_GETOPT
-# include <getopt_cdefs.h>
-# include <getopt_pfx_core.h>
+# include <getopt-cdefs.h>
+# include <getopt-pfx-core.h>
 #endif
 
 #ifndef _GL_INLINE_HEADER_BEGIN
@@ -142,13 +149,6 @@ _GL_INLINE_HEADER_BEGIN
 # define _GL_UNISTD_INLINE _GL_INLINE
 #endif
 
-/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
-
-/* The definition of _GL_ARG_NONNULL is copied here.  */
-
-/* The definition of _GL_WARN_ON_USE is copied here.  */
-
-
 /* Hide some function declarations from <winsock2.h>.  */
 
 #if @GNULIB_GETHOSTNAME@ && @UNISTD_H_HAVE_WINSOCK2_H@
diff --git a/m4/getopt.m4 b/m4/getopt.m4
index d90076922b2..ac3b38e385e 100644
--- a/m4/getopt.m4
+++ b/m4/getopt.m4
@@ -1,4 +1,4 @@
-# getopt.m4 serial 45
+# getopt.m4 serial 46
 dnl Copyright (C) 2002-2006, 2008-2017 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -364,7 +364,7 @@ AC_DEFUN([gl_GETOPT_SUBSTITUTE_HEADER],
     [Define to rpl_ if the getopt replacement functions and variables
      should be used.])
   GETOPT_H=getopt.h
-  GETOPT_CDEFS_H=getopt_cdefs.h
+  GETOPT_CDEFS_H=getopt-cdefs.h
   AC_SUBST([GETOPT_H])
   AC_SUBST([GETOPT_CDEFS_H])
 ])
diff --git a/m4/gnulib-comp.m4 b/m4/gnulib-comp.m4
index 5aea057c5d5..bfac944ea05 100644
--- a/m4/gnulib-comp.m4
+++ b/m4/gnulib-comp.m4
@@ -899,15 +899,15 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/getdtablesize.c
   lib/getgroups.c
   lib/getloadavg.c
+  lib/getopt-cdefs.in.h
+  lib/getopt-core.h
+  lib/getopt-ext.h
+  lib/getopt-pfx-core.h
+  lib/getopt-pfx-ext.h
   lib/getopt.c
   lib/getopt.in.h
   lib/getopt1.c
-  lib/getopt_cdefs.in.h
-  lib/getopt_core.h
-  lib/getopt_ext.h
   lib/getopt_int.h
-  lib/getopt_pfx_core.h
-  lib/getopt_pfx_ext.h
   lib/gettext.h
   lib/gettime.c
   lib/gettimeofday.c