Sync with the latest Gnulib code (fa1ac7ec)

1 files changed, 253 insertions, 185 deletions

diff --git a/gl/m4/gnulib-comp.m4 b/gl/m4/gnulib-comp.m4
index 219b81e2..a82c5de2 100644
--- a/gl/m4/gnulib-comp.m4
+++ b/gl/m4/gnulib-comp.m4
@@ -1,9 +1,9 @@
 # DO NOT EDIT! GENERATED AUTOMATICALLY!
-# Copyright (C) 2002-2021 Free Software Foundation, Inc.
+# Copyright (C) 2002-2022 Free Software Foundation, Inc.
 #
 # This file is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 3 of the License, or
+# the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
 #
 # This file is distributed in the hope that it will be useful,
@@ -42,7 +42,6 @@ AC_DEFUN([gl_EARLY],
   AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
   AC_REQUIRE([gl_PROG_AR_RANLIB])
 
-  AC_REQUIRE([AM_PROG_CC_C_O])
   # Code from module absolute-header:
   # Code from module alloca-opt:
   # Code from module arpa_inet:
@@ -92,6 +91,7 @@ AC_DEFUN([gl_EARLY],
   # Code from module ftell:
   # Code from module ftello:
   AC_REQUIRE([gl_SET_LARGEFILE_SOURCE])
+  # Code from module gen-header:
   # Code from module getaddrinfo:
   # Code from module getdelim:
   # Code from module getdtablesize:
@@ -167,6 +167,7 @@ AC_DEFUN([gl_EARLY],
   # Code from module std-gnu11:
   # Code from module stdalign:
   # Code from module stdbool:
+  # Code from module stdckdint:
   # Code from module stddef:
   # Code from module stdint:
   # Code from module stdio:
@@ -193,6 +194,7 @@ AC_DEFUN([gl_EARLY],
   # Code from module unistd:
   # Code from module unlocked-io-internal:
   # Code from module unsetenv:
+  # Code from module vararrays:
   # Code from module vasnprintf:
   # Code from module vasprintf:
   # Code from module verify:
@@ -228,33 +230,38 @@ AC_DEFUN([gl_INIT],
   m4_pushdef([GL_MODULE_INDICATOR_PREFIX], [GL])
   gl_COMMON
   gl_source_base='gl'
+  gl_source_base_prefix=
   gl_FUNC_ALLOCA
+  gl_CONDITIONAL_HEADER([alloca.h])
+  AC_PROG_MKDIR_P
   gl_ARPA_INET_H
   gl_ARPA_INET_H_REQUIRE_DEFAULTS
   AC_PROG_MKDIR_P
   gl_FUNC_BASE64
   gl_FUNC_BTOWC
-  if test $HAVE_BTOWC = 0 || test $REPLACE_BTOWC = 1; then
-    AC_LIBOBJ([btowc])
+  gl_CONDITIONAL([GL_COND_OBJ_BTOWC],
+                 [test $HAVE_BTOWC = 0 || test $REPLACE_BTOWC = 1])
+  AM_COND_IF([GL_COND_OBJ_BTOWC], [
     gl_PREREQ_BTOWC
-  fi
+  ])
   gl_WCHAR_MODULE_INDICATOR([btowc])
   gl___BUILTIN_EXPECT
   gl_BYTESWAP
+  gl_CONDITIONAL_HEADER([byteswap.h])
+  AC_PROG_MKDIR_P
   gl_FUNC_CALLOC_GNU
-  if test $REPLACE_CALLOC = 1; then
+  if test $REPLACE_CALLOC_FOR_CALLOC_GNU = 1; then
     AC_LIBOBJ([calloc])
   fi
+  gl_STDLIB_MODULE_INDICATOR([calloc-gnu])
   gl_FUNC_CALLOC_POSIX
-  if test $REPLACE_CALLOC = 1; then
+  if test $REPLACE_CALLOC_FOR_CALLOC_POSIX = 1; then
     AC_LIBOBJ([calloc])
   fi
   gl_STDLIB_MODULE_INDICATOR([calloc-posix])
   gl_MODULE_INDICATOR_FOR_TESTS([cloexec])
   gl_FUNC_CLOSE
-  if test $REPLACE_CLOSE = 1; then
-    AC_LIBOBJ([close])
-  fi
+  gl_CONDITIONAL([GL_COND_OBJ_CLOSE], [test $REPLACE_CLOSE = 1])
   gl_UNISTD_MODULE_INDICATOR([close])
   gl_AF_ALG
   AC_REQUIRE([AC_C_RESTRICT])
@@ -262,18 +269,20 @@ AC_DEFUN([gl_INIT],
   gl_MODULE_INDICATOR([dirname])
   gl_DOUBLE_SLASH_ROOT
   gl_FUNC_DUP2
-  if test $REPLACE_DUP2 = 1; then
-    AC_LIBOBJ([dup2])
+  gl_CONDITIONAL([GL_COND_OBJ_DUP2], [test $REPLACE_DUP2 = 1])
+  AM_COND_IF([GL_COND_OBJ_DUP2], [
     gl_PREREQ_DUP2
-  fi
+  ])
   gl_UNISTD_MODULE_INDICATOR([dup2])
   AC_PROG_MKDIR_P
   gl_ENVIRON
   gl_UNISTD_MODULE_INDICATOR([environ])
   gl_HEADER_ERRNO_H
+  gl_CONDITIONAL_HEADER([errno.h])
+  AC_PROG_MKDIR_P
   gl_ERROR
-  AS_IF([test "$ac_cv_lib_error_at_line" = no], [
-    AC_LIBOBJ([error])
+  gl_CONDITIONAL([GL_COND_OBJ_ERROR], [test "$ac_cv_lib_error_at_line" = no])
+  AM_COND_IF([GL_COND_OBJ_ERROR], [
     gl_PREREQ_ERROR
   ])
   m4_ifdef([AM_XGETTEXT_OPTION],
@@ -281,30 +290,27 @@ AC_DEFUN([gl_INIT],
      AM_][XGETTEXT_OPTION([--flag=error_at_line:5:c-format])])
   AC_REQUIRE([gl_EXTERN_INLINE])
   gl_FUNC_FCNTL
-  if test $HAVE_FCNTL = 0 || test $REPLACE_FCNTL = 1; then
-    AC_LIBOBJ([fcntl])
-  fi
+  gl_CONDITIONAL([GL_COND_OBJ_FCNTL],
+                 [test $HAVE_FCNTL = 0 || test $REPLACE_FCNTL = 1])
   gl_FCNTL_MODULE_INDICATOR([fcntl])
   gl_FCNTL_H
   gl_FCNTL_H_REQUIRE_DEFAULTS
+  AC_PROG_MKDIR_P
   gl_FUNC_FFLUSH
-  if test $REPLACE_FFLUSH = 1; then
-    AC_LIBOBJ([fflush])
+  gl_CONDITIONAL([GL_COND_OBJ_FFLUSH], [test $REPLACE_FFLUSH = 1])
+  AM_COND_IF([GL_COND_OBJ_FFLUSH], [
     gl_PREREQ_FFLUSH
-  fi
+  ])
   gl_MODULE_INDICATOR([fflush])
   gl_STDIO_MODULE_INDICATOR([fflush])
   gl_FLOAT_H
-  if test $REPLACE_FLOAT_LDBL = 1; then
-    AC_LIBOBJ([float])
-  fi
-  if test $REPLACE_ITOLD = 1; then
-    AC_LIBOBJ([itold])
-  fi
+  gl_CONDITIONAL_HEADER([float.h])
+  AC_PROG_MKDIR_P
+  gl_CONDITIONAL([GL_COND_OBJ_FLOAT], [test $REPLACE_FLOAT_LDBL = 1])
+  gl_CONDITIONAL([GL_COND_OBJ_ITOLD], [test $REPLACE_ITOLD = 1])
   gl_FUNC_FLOORF
-  if test $HAVE_DECL_FLOORF = 0 || test $REPLACE_FLOORF = 1; then
-    AC_LIBOBJ([floorf])
-  fi
+  gl_CONDITIONAL([GL_COND_OBJ_FLOORF],
+                 [test $HAVE_DECL_FLOORF = 0 || test $REPLACE_FLOORF = 1])
   gl_MATH_MODULE_INDICATOR([floorf])
   gl_FUNC_FOPEN
   if test $REPLACE_FOPEN = 1; then
@@ -313,112 +319,112 @@ AC_DEFUN([gl_INIT],
   fi
   gl_STDIO_MODULE_INDICATOR([fopen])
   gl_FUNC_FOPEN_GNU
-  if test $REPLACE_FOPEN = 1; then
+  if test $REPLACE_FOPEN_FOR_FOPEN_GNU = 1; then
     AC_LIBOBJ([fopen])
     gl_PREREQ_FOPEN
   fi
   gl_MODULE_INDICATOR([fopen-gnu])
+  gl_STDIO_MODULE_INDICATOR([fopen-gnu])
   gl_FUNC_FPURGE
-  if test $HAVE_FPURGE = 0 || test $REPLACE_FPURGE = 1; then
-    AC_LIBOBJ([fpurge])
-  fi
+  gl_CONDITIONAL([GL_COND_OBJ_FPURGE],
+                 [test $HAVE_FPURGE = 0 || test $REPLACE_FPURGE = 1])
   gl_STDIO_MODULE_INDICATOR([fpurge])
   gl_FUNC_FREADING
   gl_FUNC_FREE
-  if test $REPLACE_FREE = 1; then
-    AC_LIBOBJ([free])
+  gl_CONDITIONAL([GL_COND_OBJ_FREE], [test $REPLACE_FREE = 1])
+  AM_COND_IF([GL_COND_OBJ_FREE], [
     gl_PREREQ_FREE
-  fi
+  ])
   gl_STDLIB_MODULE_INDICATOR([free-posix])
   gl_FUNC_FSEEK
-  if test $REPLACE_FSEEK = 1; then
-    AC_LIBOBJ([fseek])
-  fi
+  gl_CONDITIONAL([GL_COND_OBJ_FSEEK], [test $REPLACE_FSEEK = 1])
   gl_STDIO_MODULE_INDICATOR([fseek])
   gl_FUNC_FSEEKO
-  if test $HAVE_FSEEKO = 0 || test $REPLACE_FSEEKO = 1; then
-    AC_LIBOBJ([fseeko])
+  gl_CONDITIONAL([GL_COND_OBJ_FSEEKO],
+                 [test $HAVE_FSEEKO = 0 || test $REPLACE_FSEEKO = 1])
+  AM_COND_IF([GL_COND_OBJ_FSEEKO], [
     gl_PREREQ_FSEEKO
-  fi
+  ])
   gl_STDIO_MODULE_INDICATOR([fseeko])
   gl_FUNC_FSTAT
-  if test $REPLACE_FSTAT = 1; then
-    AC_LIBOBJ([fstat])
+  gl_CONDITIONAL([GL_COND_OBJ_FSTAT], [test $REPLACE_FSTAT = 1])
+  AM_COND_IF([GL_COND_OBJ_FSTAT], [
     case "$host_os" in
       mingw*)
         AC_LIBOBJ([stat-w32])
         ;;
     esac
     gl_PREREQ_FSTAT
-  fi
+  ])
   gl_SYS_STAT_MODULE_INDICATOR([fstat])
   gl_FSUSAGE
-  if test $gl_cv_fs_space = yes; then
-    AC_LIBOBJ([fsusage])
+  gl_CONDITIONAL([GL_COND_OBJ_FSUSAGE], [test $gl_cv_fs_space = yes])
+  AM_COND_IF([GL_COND_OBJ_FSUSAGE], [
     gl_PREREQ_FSUSAGE_EXTRA
-  fi
+  ])
   gl_FUNC_FTELL
-  if test $REPLACE_FTELL = 1; then
-    AC_LIBOBJ([ftell])
-  fi
+  gl_CONDITIONAL([GL_COND_OBJ_FTELL], [test $REPLACE_FTELL = 1])
   gl_STDIO_MODULE_INDICATOR([ftell])
   gl_FUNC_FTELLO
-  if test $HAVE_FTELLO = 0 || test $REPLACE_FTELLO = 1; then
-    AC_LIBOBJ([ftello])
+  gl_CONDITIONAL([GL_COND_OBJ_FTELLO],
+                 [test $HAVE_FTELLO = 0 || test $REPLACE_FTELLO = 1])
+  AM_COND_IF([GL_COND_OBJ_FTELLO], [
     gl_PREREQ_FTELLO
-  fi
+  ])
   gl_STDIO_MODULE_INDICATOR([ftello])
   gl_GETADDRINFO
-  if test $HAVE_GETADDRINFO = 0 || test $REPLACE_GETADDRINFO = 1; then
-    AC_LIBOBJ([getaddrinfo])
-  fi
-  if test $HAVE_DECL_GAI_STRERROR = 0 || test $REPLACE_GAI_STRERROR = 1; then
-    AC_LIBOBJ([gai_strerror])
-  fi
+  gl_CONDITIONAL([GL_COND_OBJ_GETADDRINFO],
+                 [test $HAVE_GETADDRINFO = 0 || test $REPLACE_GETADDRINFO = 1])
+  gl_CONDITIONAL([GL_COND_OBJ_GAI_STRERROR],
+                 [test $HAVE_DECL_GAI_STRERROR = 0 || test $REPLACE_GAI_STRERROR = 1])
   gl_NETDB_MODULE_INDICATOR([getaddrinfo])
   gl_FUNC_GETDELIM
-  if test $HAVE_GETDELIM = 0 || test $REPLACE_GETDELIM = 1; then
-    AC_LIBOBJ([getdelim])
+  gl_CONDITIONAL([GL_COND_OBJ_GETDELIM],
+                 [test $HAVE_GETDELIM = 0 || test $REPLACE_GETDELIM = 1])
+  AM_COND_IF([GL_COND_OBJ_GETDELIM], [
     gl_PREREQ_GETDELIM
-  fi
+  ])
   gl_STDIO_MODULE_INDICATOR([getdelim])
   gl_FUNC_GETDTABLESIZE
-  if test $HAVE_GETDTABLESIZE = 0 || test $REPLACE_GETDTABLESIZE = 1; then
-    AC_LIBOBJ([getdtablesize])
+  gl_CONDITIONAL([GL_COND_OBJ_GETDTABLESIZE],
+                 [test $HAVE_GETDTABLESIZE = 0 || test $REPLACE_GETDTABLESIZE = 1])
+  AM_COND_IF([GL_COND_OBJ_GETDTABLESIZE], [
     gl_PREREQ_GETDTABLESIZE
-  fi
+  ])
   gl_UNISTD_MODULE_INDICATOR([getdtablesize])
   gl_FUNC_GETHOSTNAME
-  if test $HAVE_GETHOSTNAME = 0; then
-    AC_LIBOBJ([gethostname])
+  gl_CONDITIONAL([GL_COND_OBJ_GETHOSTNAME], [test $HAVE_GETHOSTNAME = 0])
+  AM_COND_IF([GL_COND_OBJ_GETHOSTNAME], [
     gl_PREREQ_GETHOSTNAME
-  fi
+  ])
   gl_UNISTD_MODULE_INDICATOR([gethostname])
   gl_FUNC_GETLINE
-  if test $REPLACE_GETLINE = 1; then
-    AC_LIBOBJ([getline])
+  gl_CONDITIONAL([GL_COND_OBJ_GETLINE], [test $REPLACE_GETLINE = 1])
+  AM_COND_IF([GL_COND_OBJ_GETLINE], [
     gl_PREREQ_GETLINE
-  fi
+  ])
   gl_STDIO_MODULE_INDICATOR([getline])
   AC_REQUIRE([AC_CANONICAL_HOST])
   gl_GETLOADAVG
-  if test $HAVE_GETLOADAVG = 0; then
-    AC_LIBOBJ([getloadavg])
+  gl_CONDITIONAL([GL_COND_OBJ_GETLOADAVG], [test $HAVE_GETLOADAVG = 0])
+  AM_COND_IF([GL_COND_OBJ_GETLOADAVG], [
     gl_PREREQ_GETLOADAVG
-  fi
+  ])
   gl_STDLIB_MODULE_INDICATOR([getloadavg])
   gl_FUNC_GETOPT_GNU
   dnl Because of the way gl_FUNC_GETOPT_GNU is implemented (the gl_getopt_required
   dnl mechanism), there is no need to do any AC_LIBOBJ or AC_SUBST here; they are
   dnl done in the getopt-posix module.
   gl_FUNC_GETOPT_POSIX
-  if test $REPLACE_GETOPT = 1; then
-    AC_LIBOBJ([getopt])
-    AC_LIBOBJ([getopt1])
+  gl_CONDITIONAL_HEADER([getopt.h])
+  gl_CONDITIONAL_HEADER([getopt-cdefs.h])
+  AC_PROG_MKDIR_P
+  gl_CONDITIONAL([GL_COND_OBJ_GETOPT], [test $REPLACE_GETOPT = 1])
+  AM_COND_IF([GL_COND_OBJ_GETOPT], [
     dnl Define the substituted variable GNULIB_UNISTD_H_GETOPT to 1.
     gl_UNISTD_H_REQUIRE_DEFAULTS
     gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNISTD_H_GETOPT], [1])
-  fi
+  ])
   gl_UNISTD_MODULE_INDICATOR([getopt-posix])
   gl_FUNC_GETPROGNAME
   dnl you must add AM_GNU_GETTEXT([external]) or similar to configure.ac.
@@ -432,77 +438,86 @@ AC_DEFUN([gl_INIT],
   gl_HOSTENT
   gl_IDPRIV
   gl_FUNC_INET_NTOP
-  if test $HAVE_INET_NTOP = 0 || test $REPLACE_INET_NTOP = 1; then
-    AC_LIBOBJ([inet_ntop])
+  gl_CONDITIONAL([GL_COND_OBJ_INET_NTOP],
+                 [test $HAVE_INET_NTOP = 0 || test $REPLACE_INET_NTOP = 1])
+  AM_COND_IF([GL_COND_OBJ_INET_NTOP], [
     gl_PREREQ_INET_NTOP
-  fi
+  ])
   gl_ARPA_INET_MODULE_INDICATOR([inet_ntop])
   gl_INTTYPES_INCOMPLETE
   gl_INTTYPES_H_REQUIRE_DEFAULTS
+  AC_PROG_MKDIR_P
   gl_LANGINFO_H
   gl_LANGINFO_H_REQUIRE_DEFAULTS
+  AC_PROG_MKDIR_P
   AC_REQUIRE([gl_LARGEFILE])
   gl___INLINE
   gl_LIMITS_H
+  gl_CONDITIONAL_HEADER([limits.h])
+  AC_PROG_MKDIR_P
   gl_LOCALCHARSET
   dnl For backward compatibility. Some packages still use this.
   LOCALCHARSET_TESTS_ENVIRONMENT=
   AC_SUBST([LOCALCHARSET_TESTS_ENVIRONMENT])
   gl_LOCALE_H
   gl_LOCALE_H_REQUIRE_DEFAULTS
+  AC_PROG_MKDIR_P
   gl_FUNC_LOCALECONV
-  if test $REPLACE_LOCALECONV = 1; then
-    AC_LIBOBJ([localeconv])
+  gl_CONDITIONAL([GL_COND_OBJ_LOCALECONV], [test $REPLACE_LOCALECONV = 1])
+  AM_COND_IF([GL_COND_OBJ_LOCALECONV], [
     gl_PREREQ_LOCALECONV
-  fi
+  ])
   gl_LOCALE_MODULE_INDICATOR([localeconv])
   gl_LOCK
   gl_MODULE_INDICATOR([lock])
   gl_FUNC_LSEEK
-  if test $REPLACE_LSEEK = 1; then
-    AC_LIBOBJ([lseek])
-  fi
+  gl_CONDITIONAL([GL_COND_OBJ_LSEEK], [test $REPLACE_LSEEK = 1])
   gl_UNISTD_MODULE_INDICATOR([lseek])
   gl_FUNC_MALLOC_GNU
-  if test $REPLACE_MALLOC = 1; then
+  if test $REPLACE_MALLOC_FOR_MALLOC_GNU = 1; then
     AC_LIBOBJ([malloc])
   fi
+  gl_STDLIB_MODULE_INDICATOR([malloc-gnu])
   AC_REQUIRE([gl_FUNC_MALLOC_POSIX])
-  if test $REPLACE_MALLOC = 1; then
+  if test $REPLACE_MALLOC_FOR_MALLOC_POSIX = 1; then
     AC_LIBOBJ([malloc])
   fi
   gl_STDLIB_MODULE_INDICATOR([malloc-posix])
   gl_MALLOCA
   gl_MATH_H
   gl_MATH_H_REQUIRE_DEFAULTS
+  AC_PROG_MKDIR_P
   gl_FUNC_MBRTOWC
-  if test $HAVE_MBRTOWC = 0 || test $REPLACE_MBRTOWC = 1; then
-    AC_LIBOBJ([mbrtowc])
+  gl_CONDITIONAL([GL_COND_OBJ_MBRTOWC],
+                 [test $HAVE_MBRTOWC = 0 || test $REPLACE_MBRTOWC = 1])
+  AM_COND_IF([GL_COND_OBJ_MBRTOWC], [
     if test $REPLACE_MBSTATE_T = 1; then
       AC_LIBOBJ([lc-charset-dispatch])
       AC_LIBOBJ([mbtowc-lock])
       gl_PREREQ_MBTOWC_LOCK
     fi
     gl_PREREQ_MBRTOWC
-  fi
+  ])
   gl_WCHAR_MODULE_INDICATOR([mbrtowc])
   gl_FUNC_MBSINIT
-  if test $HAVE_MBSINIT = 0 || test $REPLACE_MBSINIT = 1; then
-    AC_LIBOBJ([mbsinit])
+  gl_CONDITIONAL([GL_COND_OBJ_MBSINIT],
+                 [test $HAVE_MBSINIT = 0 || test $REPLACE_MBSINIT = 1])
+  AM_COND_IF([GL_COND_OBJ_MBSINIT], [
     gl_PREREQ_MBSINIT
-  fi
+  ])
   gl_WCHAR_MODULE_INDICATOR([mbsinit])
   gl_FUNC_MBTOWC
-  if test $HAVE_MBTOWC = 0 || test $REPLACE_MBTOWC = 1; then
-    AC_LIBOBJ([mbtowc])
+  gl_CONDITIONAL([GL_COND_OBJ_MBTOWC],
+                 [test $HAVE_MBTOWC = 0 || test $REPLACE_MBTOWC = 1])
+  AM_COND_IF([GL_COND_OBJ_MBTOWC], [
     gl_PREREQ_MBTOWC
-  fi
+  ])
   gl_STDLIB_MODULE_INDICATOR([mbtowc])
   gl_FUNC_MEMCHR
-  if test $REPLACE_MEMCHR = 1; then
-    AC_LIBOBJ([memchr])
+  gl_CONDITIONAL([GL_COND_OBJ_MEMCHR], [test $REPLACE_MEMCHR = 1])
+  AM_COND_IF([GL_COND_OBJ_MEMCHR], [
     gl_PREREQ_MEMCHR
-  fi
+  ])
   gl_STRING_MODULE_INDICATOR([memchr])
   gl_MINMAX
   gl_FUNC_MKTIME
@@ -517,72 +532,74 @@ AC_DEFUN([gl_INIT],
     gl_PREREQ_MKTIME
   fi
   gl_MOUNTLIST
-  if test $gl_cv_list_mounted_fs = yes; then
-    AC_LIBOBJ([mountlist])
+  gl_CONDITIONAL([GL_COND_OBJ_MOUNTLIST], [test $gl_cv_list_mounted_fs = yes])
+  AM_COND_IF([GL_COND_OBJ_MOUNTLIST], [
     gl_PREREQ_MOUNTLIST_EXTRA
-  fi
+  ])
   AC_REQUIRE([gl_MSVC_INVAL])
-  if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then
-    AC_LIBOBJ([msvc-inval])
-  fi
+  gl_CONDITIONAL([GL_COND_OBJ_MSVC_INVAL],
+                 [test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1])
   AC_REQUIRE([gl_MSVC_NOTHROW])
-  if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then
-    AC_LIBOBJ([msvc-nothrow])
-  fi
+  gl_CONDITIONAL([GL_COND_OBJ_MSVC_NOTHROW],
+                 [test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1])
   gl_MODULE_INDICATOR([msvc-nothrow])
   gl_MULTIARCH
   gl_NETDB_H
   gl_NETDB_H_REQUIRE_DEFAULTS
+  AC_PROG_MKDIR_P
   gl_HEADER_NETINET_IN
+  gl_CONDITIONAL_HEADER([netinet/in.h])
   AC_PROG_MKDIR_P
   gl_FUNC_NL_LANGINFO
-  if test $HAVE_NL_LANGINFO = 0 || test $REPLACE_NL_LANGINFO = 1; then
-    AC_LIBOBJ([nl_langinfo])
-  fi
+  gl_CONDITIONAL([GL_COND_OBJ_NL_LANGINFO],
+                 [test $HAVE_NL_LANGINFO = 0 || test $REPLACE_NL_LANGINFO = 1])
+  gl_CONDITIONAL([GL_COND_OBJ_NL_LANGINFO_LOCK],
+                 [test $REPLACE_NL_LANGINFO = 1 && test $NL_LANGINFO_MTSAFE = 0])
   if test $REPLACE_NL_LANGINFO = 1 && test $NL_LANGINFO_MTSAFE = 0; then
-    AC_LIBOBJ([nl_langinfo-lock])
     gl_PREREQ_NL_LANGINFO_LOCK
   fi
   gl_LANGINFO_MODULE_INDICATOR([nl_langinfo])
   gl_FUNC_OPEN
-  if test $REPLACE_OPEN = 1; then
-    AC_LIBOBJ([open])
+  gl_CONDITIONAL([GL_COND_OBJ_OPEN], [test $REPLACE_OPEN = 1])
+  AM_COND_IF([GL_COND_OBJ_OPEN], [
     gl_PREREQ_OPEN
-  fi
+  ])
   gl_FCNTL_MODULE_INDICATOR([open])
   gl_PATHMAX
   gl_FUNC_REALLOC_GNU
-  if test $REPLACE_REALLOC = 1; then
+  if test $REPLACE_REALLOC_FOR_REALLOC_GNU = 1; then
     AC_LIBOBJ([realloc])
   fi
+  gl_STDLIB_MODULE_INDICATOR([realloc-gnu])
   gl_FUNC_REALLOC_POSIX
-  if test $REPLACE_REALLOC = 1; then
+  if test $REPLACE_REALLOC_FOR_REALLOC_POSIX = 1; then
     AC_LIBOBJ([realloc])
   fi
   gl_STDLIB_MODULE_INDICATOR([realloc-posix])
   gl_FUNC_REALLOCARRAY
-  if test $HAVE_REALLOCARRAY = 0 || test $REPLACE_REALLOCARRAY = 1; then
-    AC_LIBOBJ([reallocarray])
+  gl_CONDITIONAL([GL_COND_OBJ_REALLOCARRAY],
+                 [test $HAVE_REALLOCARRAY = 0 || test $REPLACE_REALLOCARRAY = 1])
+  AM_COND_IF([GL_COND_OBJ_REALLOCARRAY], [
     gl_PREREQ_REALLOCARRAY
-  fi
+  ])
   gl_MODULE_INDICATOR([reallocarray])
   gl_STDLIB_MODULE_INDICATOR([reallocarray])
   gl_REGEX
-  if test $ac_use_included_regex = yes; then
-    AC_LIBOBJ([regex])
+  gl_CONDITIONAL([GL_COND_OBJ_REGEX], [test $ac_use_included_regex = yes])
+  AM_COND_IF([GL_COND_OBJ_REGEX], [
     gl_PREREQ_REGEX
-  fi
+  ])
   gl_SERVENT
   gl_FUNC_SETENV
-  if test $HAVE_SETENV = 0 || test $REPLACE_SETENV = 1; then
-    AC_LIBOBJ([setenv])
-  fi
+  gl_CONDITIONAL([GL_COND_OBJ_SETENV],
+                 [test $HAVE_SETENV = 0 || test $REPLACE_SETENV = 1])
   gl_STDLIB_MODULE_INDICATOR([setenv])
   gl_FUNC_SETLOCALE_NULL
-  if test $SETLOCALE_NULL_ALL_MTSAFE = 0 || test $SETLOCALE_NULL_ONE_MTSAFE = 0; then
-    AC_LIBOBJ([setlocale-lock])
+  gl_CONDITIONAL([GL_COND_OBJ_SETLOCALE_LOCK],
+                 [test $SETLOCALE_NULL_ALL_MTSAFE = 0 || test $SETLOCALE_NULL_ONE_MTSAFE = 0])
+  AM_COND_IF([GL_COND_OBJ_SETLOCALE_LOCK], [
     gl_PREREQ_SETLOCALE_LOCK
-  fi
+  ])
   gl_LOCALE_MODULE_INDICATOR([setlocale_null])
   gl_SIZE_MAX
   gl_FUNC_SNPRINTF
@@ -593,25 +610,46 @@ AC_DEFUN([gl_INIT],
   gl_TYPE_SOCKLEN_T
   gt_TYPE_SSIZE_T
   gl_FUNC_STAT
-  if test $REPLACE_STAT = 1; then
-    AC_LIBOBJ([stat])
+  gl_CONDITIONAL([GL_COND_OBJ_STAT], [test $REPLACE_STAT = 1])
+  AM_COND_IF([GL_COND_OBJ_STAT], [
     case "$host_os" in
       mingw*)
         AC_LIBOBJ([stat-w32])
         ;;
     esac
     gl_PREREQ_STAT
-  fi
+  ])
   gl_SYS_STAT_MODULE_INDICATOR([stat])
   gl_STAT_TIME
   gl_STAT_BIRTHTIME
   gl_STDALIGN_H
-  AM_STDBOOL_H
+  gl_CONDITIONAL_HEADER([stdalign.h])
+  AC_PROG_MKDIR_P
+  gl_STDBOOL_H
+  gl_CONDITIONAL_HEADER([stdbool.h])
+  AC_PROG_MKDIR_P
+  AC_CHECK_HEADERS_ONCE([stdckdint.h])
+  if test $ac_cv_header_stdckdint_h = yes; then
+    GL_GENERATE_STDCKDINT_H=false
+  else
+    GL_GENERATE_STDCKDINT_H=true
+  fi
+  gl_CONDITIONAL_HEADER([stdckdint.h])
+  AC_PROG_MKDIR_P
   gl_STDDEF_H
   gl_STDDEF_H_REQUIRE_DEFAULTS
+  gl_CONDITIONAL_HEADER([stddef.h])
+  AC_PROG_MKDIR_P
   gl_STDINT_H
+  gl_CONDITIONAL_HEADER([stdint.h])
+  dnl Because of gl_REPLACE_LIMITS_H:
+  gl_CONDITIONAL_HEADER([limits.h])
+  AC_PROG_MKDIR_P
   gl_STDIO_H
   gl_STDIO_H_REQUIRE_DEFAULTS
+  AC_PROG_MKDIR_P
+  gl_CONDITIONAL([GL_COND_OBJ_STDIO_READ], [test $REPLACE_STDIO_READ_FUNCS = 1])
+  gl_CONDITIONAL([GL_COND_OBJ_STDIO_WRITE], [test $REPLACE_STDIO_WRITE_FUNCS = 1])
   dnl No need to create extra modules for these functions. Everyone who uses
   dnl <stdio.h> likely needs them.
   gl_STDIO_MODULE_INDICATOR([fscanf])
@@ -637,15 +675,16 @@ AC_DEFUN([gl_INIT],
   gl_STDIO_MODULE_INDICATOR([fwrite])
   gl_STDLIB_H
   gl_STDLIB_H_REQUIRE_DEFAULTS
+  AC_PROG_MKDIR_P
   gl_STRCASE
-  if test $HAVE_STRCASECMP = 0; then
-    AC_LIBOBJ([strcasecmp])
+  gl_CONDITIONAL([GL_COND_OBJ_STRCASECMP], [test $HAVE_STRCASECMP = 0])
+  AM_COND_IF([GL_COND_OBJ_STRCASECMP], [
     gl_PREREQ_STRCASECMP
-  fi
-  if test $HAVE_STRNCASECMP = 0; then
-    AC_LIBOBJ([strncasecmp])
+  ])
+  gl_CONDITIONAL([GL_COND_OBJ_STRNCASECMP], [test $HAVE_STRNCASECMP = 0])
+  AM_COND_IF([GL_COND_OBJ_STRNCASECMP], [
     gl_PREREQ_STRNCASECMP
-  fi
+  ])
   gl_FUNC_STRCASESTR
   if test $HAVE_STRCASESTR = 0 || test $REPLACE_STRCASESTR = 1; then
     AC_LIBOBJ([strcasestr])
@@ -658,26 +697,27 @@ AC_DEFUN([gl_INIT],
   fi
   gl_STRING_MODULE_INDICATOR([strcasestr])
   gl_FUNC_STRERROR
-  if test $REPLACE_STRERROR = 1; then
-    AC_LIBOBJ([strerror])
-  fi
+  gl_CONDITIONAL([GL_COND_OBJ_STRERROR], [test $REPLACE_STRERROR = 1])
   gl_MODULE_INDICATOR([strerror])
   gl_STRING_MODULE_INDICATOR([strerror])
   AC_REQUIRE([gl_HEADER_ERRNO_H])
   AC_REQUIRE([gl_FUNC_STRERROR_0])
-  if test -n "$ERRNO_H" || test $REPLACE_STRERROR_0 = 1; then
-    AC_LIBOBJ([strerror-override])
+  gl_CONDITIONAL([GL_COND_OBJ_STRERROR_OVERRIDE],
+                 [test -n "$ERRNO_H" || test $REPLACE_STRERROR_0 = 1])
+  AM_COND_IF([GL_COND_OBJ_STRERROR_OVERRIDE], [
     gl_PREREQ_SYS_H_WINSOCK2
-  fi
+  ])
   gl_STRING_H
   gl_STRING_H_REQUIRE_DEFAULTS
+  AC_PROG_MKDIR_P
   gl_STRINGS_H
   gl_STRINGS_H_REQUIRE_DEFAULTS
+  AC_PROG_MKDIR_P
   gl_FUNC_STRSEP
-  if test $HAVE_STRSEP = 0; then
-    AC_LIBOBJ([strsep])
+  gl_CONDITIONAL([GL_COND_OBJ_STRSEP], [test $HAVE_STRSEP = 0])
+  AM_COND_IF([GL_COND_OBJ_STRSEP], [
     gl_PREREQ_STRSEP
-  fi
+  ])
   gl_STRING_MODULE_INDICATOR([strsep])
   gl_FUNC_STRSTR_SIMPLE
   if test $REPLACE_STRSTR = 1; then
@@ -699,27 +739,33 @@ AC_DEFUN([gl_INIT],
   AC_REQUIRE([gl_THREADLIB])
   gl_TIME_H
   gl_TIME_H_REQUIRE_DEFAULTS
+  AC_PROG_MKDIR_P
   gl_TIME_R
-  if test $HAVE_LOCALTIME_R = 0 || test $REPLACE_LOCALTIME_R = 1; then
-    AC_LIBOBJ([time_r])
+  gl_CONDITIONAL([GL_COND_OBJ_TIME_R],
+                 [test $HAVE_LOCALTIME_R = 0 || test $REPLACE_LOCALTIME_R = 1])
+  AM_COND_IF([GL_COND_OBJ_TIME_R], [
     gl_PREREQ_TIME_R
-  fi
+  ])
   gl_TIME_MODULE_INDICATOR([time_r])
   gl_FUNC_TIMEGM
-  if test $HAVE_TIMEGM = 0 || test $REPLACE_TIMEGM = 1; then
-    AC_LIBOBJ([timegm])
+  gl_CONDITIONAL([GL_COND_OBJ_TIMEGM],
+                 [test $HAVE_TIMEGM = 0 || test $REPLACE_TIMEGM = 1])
+  AM_COND_IF([GL_COND_OBJ_TIMEGM], [
     gl_PREREQ_TIMEGM
-  fi
+  ])
   gl_TIME_MODULE_INDICATOR([timegm])
   gl_UNISTD_H
   gl_UNISTD_H_REQUIRE_DEFAULTS
+  AC_PROG_MKDIR_P
   gl_FUNC_GLIBC_UNLOCKED_IO
   gl_FUNC_UNSETENV
-  if test $HAVE_UNSETENV = 0 || test $REPLACE_UNSETENV = 1; then
-    AC_LIBOBJ([unsetenv])
+  gl_CONDITIONAL([GL_COND_OBJ_UNSETENV],
+                 [test $HAVE_UNSETENV = 0 || test $REPLACE_UNSETENV = 1])
+  AM_COND_IF([GL_COND_OBJ_UNSETENV], [
     gl_PREREQ_UNSETENV
-  fi
+  ])
   gl_STDLIB_MODULE_INDICATOR([unsetenv])
+  AC_C_VARARRAYS
   AC_REQUIRE([AC_C_RESTRICT])
   gl_FUNC_VASNPRINTF
   gl_FUNC_VASPRINTF
@@ -731,38 +777,29 @@ AC_DEFUN([gl_INIT],
   gl_STDIO_MODULE_INDICATOR([vsnprintf])
   gl_WCHAR_H
   gl_WCHAR_H_REQUIRE_DEFAULTS
+  AC_PROG_MKDIR_P
   gl_FUNC_WCRTOMB
-  if test $HAVE_WCRTOMB = 0 || test $REPLACE_WCRTOMB = 1; then
-    AC_LIBOBJ([wcrtomb])
+  gl_CONDITIONAL([GL_COND_OBJ_WCRTOMB],
+                 [test $HAVE_WCRTOMB = 0 || test $REPLACE_WCRTOMB = 1])
+  AM_COND_IF([GL_COND_OBJ_WCRTOMB], [
     gl_PREREQ_WCRTOMB
-  fi
+  ])
   gl_WCHAR_MODULE_INDICATOR([wcrtomb])
   gl_WCTYPE_H
   gl_WCTYPE_H_REQUIRE_DEFAULTS
+  AC_PROG_MKDIR_P
   AC_REQUIRE([AC_CANONICAL_HOST])
-  case "$host_os" in
-    mingw*)
-      AC_LIBOBJ([windows-mutex])
-      ;;
-  esac
+  gl_CONDITIONAL([GL_COND_OBJ_WINDOWS_MUTEX],
+                 [case "$host_os" in mingw*) true;; *) false;; esac])
   AC_REQUIRE([AC_CANONICAL_HOST])
-  case "$host_os" in
-    mingw*)
-      AC_LIBOBJ([windows-once])
-      ;;
-  esac
+  gl_CONDITIONAL([GL_COND_OBJ_WINDOWS_ONCE],
+                 [case "$host_os" in mingw*) true;; *) false;; esac])
   AC_REQUIRE([AC_CANONICAL_HOST])
-  case "$host_os" in
-    mingw*)
-      AC_LIBOBJ([windows-recmutex])
-      ;;
-  esac
+  gl_CONDITIONAL([GL_COND_OBJ_WINDOWS_RECMUTEX],
+                 [case "$host_os" in mingw*) true;; *) false;; esac])
   AC_REQUIRE([AC_CANONICAL_HOST])
-  case "$host_os" in
-    mingw*)
-      AC_LIBOBJ([windows-rwlock])
-      ;;
-  esac
+  gl_CONDITIONAL([GL_COND_OBJ_WINDOWS_RWLOCK],
+                 [case "$host_os" in mingw*) true;; *) false;; esac])
   gl_XALLOC
   gl_MODULE_INDICATOR([xalloc])
   gl_MODULE_INDICATOR([xalloc-die])
@@ -789,16 +826,28 @@ AC_DEFUN([gl_INIT],
   AC_CONFIG_COMMANDS_PRE([
     gl_libobjs=
     gl_ltlibobjs=
+    gl_libobjdeps=
     if test -n "$gl_LIBOBJS"; then
       # Remove the extension.
+changequote(,)dnl
       sed_drop_objext='s/\.o$//;s/\.obj$//'
+      sed_dirname1='s,//*,/,g'
+      sed_dirname2='s,\(.\)/$,\1,'
+      sed_dirname3='s,^[^/]*$,.,'
+      sed_dirname4='s,\(.\)/[^/]*$,\1,'
+      sed_basename1='s,.*/,,'
+changequote([, ])dnl
       for i in `for i in $gl_LIBOBJS; do echo "$i"; done | sed -e "$sed_drop_objext" | sort | uniq`; do
         gl_libobjs="$gl_libobjs $i.$ac_objext"
         gl_ltlibobjs="$gl_ltlibobjs $i.lo"
+        i_dir=`echo "$i" | sed -e "$sed_dirname1" -e "$sed_dirname2" -e "$sed_dirname3" -e "$sed_dirname4"`
+        i_base=`echo "$i" | sed -e "$sed_basename1"`
+        gl_libobjdeps="$gl_libobjdeps $i_dir/\$(DEPDIR)/$i_base.Po"
       done
     fi
     AC_SUBST([gl_LIBOBJS], [$gl_libobjs])
     AC_SUBST([gl_LTLIBOBJS], [$gl_ltlibobjs])
+    AC_SUBST([gl_LIBOBJDEPS], [$gl_libobjdeps])
   ])
   gltests_libdeps=
   gltests_ltlibdeps=
@@ -811,6 +860,7 @@ AC_DEFUN([gl_INIT],
   m4_pushdef([GL_MODULE_INDICATOR_PREFIX], [GL])
   gl_COMMON
   gl_source_base='tests'
+  gl_source_base_prefix=
 changequote(,)dnl
   gltests_WITNESS=IN_`echo "${PACKAGE-$PACKAGE_TARNAME}" | LC_ALL=C tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ | LC_ALL=C sed -e 's/[^A-Z0-9_]/_/g'`_GNULIB_TESTS
 changequote([, ])dnl
@@ -839,17 +889,30 @@ changequote([, ])dnl
   AC_CONFIG_COMMANDS_PRE([
     gltests_libobjs=
     gltests_ltlibobjs=
+    gltests_libobjdeps=
     if test -n "$gltests_LIBOBJS"; then
       # Remove the extension.
+changequote(,)dnl
       sed_drop_objext='s/\.o$//;s/\.obj$//'
+      sed_dirname1='s,//*,/,g'
+      sed_dirname2='s,\(.\)/$,\1,'
+      sed_dirname3='s,^[^/]*$,.,'
+      sed_dirname4='s,\(.\)/[^/]*$,\1,'
+      sed_basename1='s,.*/,,'
+changequote([, ])dnl
       for i in `for i in $gltests_LIBOBJS; do echo "$i"; done | sed -e "$sed_drop_objext" | sort | uniq`; do
         gltests_libobjs="$gltests_libobjs $i.$ac_objext"
         gltests_ltlibobjs="$gltests_ltlibobjs $i.lo"
+        i_dir=`echo "$i" | sed -e "$sed_dirname1" -e "$sed_dirname2" -e "$sed_dirname3" -e "$sed_dirname4"`
+        i_base=`echo "$i" | sed -e "$sed_basename1"`
+        gltests_libobjdeps="$gltests_libobjdeps $i_dir/\$(DEPDIR)/$i_base.Po"
       done
     fi
     AC_SUBST([gltests_LIBOBJS], [$gltests_libobjs])
     AC_SUBST([gltests_LTLIBOBJS], [$gltests_ltlibobjs])
+    AC_SUBST([gltests_LIBOBJDEPS], [$gltests_libobjdeps])
   ])
+  AC_REQUIRE([gl_CC_GNULIB_WARNINGS])
   LIBGNU_LIBDEPS="$gl_libdeps"
   AC_SUBST([LIBGNU_LIBDEPS])
   LIBGNU_LTLIBDEPS="$gl_ltlibdeps"
@@ -1000,6 +1063,7 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/idpriv.h
   lib/idx.h
   lib/inet_ntop.c
+  lib/intprops-internal.h
   lib/intprops.h
   lib/inttypes.in.h
   lib/itold.c
@@ -1080,9 +1144,12 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/stat.c
   lib/stdalign.in.h
   lib/stdbool.in.h
+  lib/stdckdint.in.h
   lib/stddef.in.h
   lib/stdint.in.h
   lib/stdio-impl.h
+  lib/stdio-read.c
+  lib/stdio-write.c
   lib/stdio.in.h
   lib/stdlib.in.h
   lib/str-two-way.h
@@ -1285,6 +1352,7 @@ AC_DEFUN([gl_FILE_LIST], [
   m4/ungetc.m4
   m4/unistd_h.m4
   m4/unlocked-io.m4
+  m4/vararrays.m4
   m4/vasnprintf.m4
   m4/vasprintf.m4
   m4/visibility.m4