Add comments after 2021-04-11 change.

* m4/*_h.m4: Add comments regarding *_REQUIRE_DEFAULTS and
*_MODULE_INDICATOR macros.

diff --git a/ChangeLog b/ChangeLog
index e55ad5fb63d8eb5e4de851f0bad853b2fcdb6234..e86be66aec87392aad912ce51f5919172f13d809 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2021-04-18  Bruno Haible  <bruno@clisp.org>
+
+       Add comments after 2021-04-11 change.
+       * m4/*_h.m4: Add comments regarding *_REQUIRE_DEFAULTS and
+       *_MODULE_INDICATOR macros.
+
 2021-04-18  Bruno Haible  <bruno@clisp.org>
 
        doc: Update for FreeBSD 13.0/arm64.

diff --git a/m4/arpa_inet_h.m4 b/m4/arpa_inet_h.m4
index 868ebdfb8894407983935f27555259a786b39ed1..a3ba25624602b8343439765b0b62c77766dcb252 100644 (file)
--- a/m4/arpa_inet_h.m4
+++ b/m4/arpa_inet_h.m4
@@ -1,4 +1,4 @@
-# arpa_inet_h.m4 serial 16
+# arpa_inet_h.m4 serial 17
 dnl Copyright (C) 2006, 2008-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -40,6 +40,10 @@ AC_DEFUN_ONCE([gl_ARPA_INET_H],
     ]], [inet_ntop inet_pton])
 ])
 
+# gl_ARPA_INET_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_ARPA_INET_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -47,6 +51,9 @@ AC_DEFUN([gl_ARPA_INET_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_SET_VARIABLE([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_ARPA_INET_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_ARPA_INET_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/ctype.m4 b/m4/ctype.m4
index d48847a8ac8f15b5ed2f07f6c969bbb86c733437..efdae45307704f77b86ed22d7ab2aa7801654112 100644 (file)
--- a/m4/ctype.m4
+++ b/m4/ctype.m4
@@ -1,4 +1,4 @@
-# ctype_h.m4 serial 8
+# ctype_h.m4 serial 9
 dnl Copyright (C) 2009-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -17,6 +17,10 @@ AC_DEFUN_ONCE([gl_CTYPE_H],
     ]], [isblank])
 ])
 
+# gl_CTYPE_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_CTYPE_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -24,6 +28,9 @@ AC_DEFUN([gl_CTYPE_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_SET_VARIABLE([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_CTYPE_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_CTYPE_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/dirent_h.m4 b/m4/dirent_h.m4
index 3bcf34b7cf0e99e5bb88f0d361a51b0bb0ed3471..17e2a20c5d4d659daa9e52c706f6bf7366488956 100644 (file)
--- a/m4/dirent_h.m4
+++ b/m4/dirent_h.m4
@@ -1,4 +1,4 @@
-# dirent_h.m4 serial 18
+# dirent_h.m4 serial 19
 dnl Copyright (C) 2008-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -27,6 +27,10 @@ AC_DEFUN_ONCE([gl_DIRENT_H],
     ]], [alphasort closedir dirfd fdopendir opendir readdir rewinddir scandir])
 ])
 
+# gl_DIRENT_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_DIRENT_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -36,6 +40,9 @@ AC_DEFUN([gl_DIRENT_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_DIRENT_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_DIRENT_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/fcntl_h.m4 b/m4/fcntl_h.m4
index 822bf027e3f10381ed12aad9f6b07ecc9c6988af..aba44735d146186bf6608d3ca65d7817a182aedb 100644 (file)
--- a/m4/fcntl_h.m4
+++ b/m4/fcntl_h.m4
@@ -1,4 +1,4 @@
-# serial 19
+# serial 20
 # Configure fcntl.h.
 dnl Copyright (C) 2006-2007, 2009-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
@@ -26,6 +26,10 @@ AC_DEFUN_ONCE([gl_FCNTL_H],
     ]], [fcntl openat])
 ])
 
+# gl_FCNTL_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_FCNTL_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -35,6 +39,9 @@ AC_DEFUN([gl_FCNTL_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_FCNTL_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_FCNTL_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/fnmatch_h.m4 b/m4/fnmatch_h.m4
index d12c698cdf5d0caa22e7212ad6ed17ca174f8200..e9bcb66c696c7af84aafd540738be0ef6ad36956 100644 (file)
--- a/m4/fnmatch_h.m4
+++ b/m4/fnmatch_h.m4
@@ -1,4 +1,4 @@
-# fnmatch_h.m4 serial 6
+# fnmatch_h.m4 serial 7
 dnl Copyright (C) 2009-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -57,6 +57,10 @@ AC_DEFUN([gl_REPLACE_FNMATCH_H],
   AM_CONDITIONAL([GL_GENERATE_FNMATCH_H], [test -n "$FNMATCH_H"])
 ])
 
+# gl_FNMATCH_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_FNMATCH_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -66,6 +70,9 @@ AC_DEFUN([gl_FNMATCH_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_FNMATCH_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_FNMATCH_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/glob_h.m4 b/m4/glob_h.m4
index 68e7b4d284f5c30e22d1b27fa034ba354d6a93ec..5332c814bca63a764d3121952ba2372dd694ecd5 100644 (file)
--- a/m4/glob_h.m4
+++ b/m4/glob_h.m4
@@ -1,4 +1,4 @@
-# glob_h.m4 serial 7
+# glob_h.m4 serial 8
 dnl Copyright (C) 2018-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -52,6 +52,10 @@ AC_DEFUN([gl_REPLACE_GLOB_H],
   AM_CONDITIONAL([GL_GENERATE_GLOB_H], [test -n "$GLOB_H"])
 ])
 
+# gl_GLOB_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_GLOB_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -61,6 +65,9 @@ AC_DEFUN([gl_GLOB_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_GLOB_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_GLOB_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/iconv_h.m4 b/m4/iconv_h.m4
index e4fccc04b2ba06135e8586d72789d6dca36e6c52..2940988297b353891f279e8307cf481e61bab623 100644 (file)
--- a/m4/iconv_h.m4
+++ b/m4/iconv_h.m4
@@ -1,4 +1,4 @@
-# iconv_h.m4 serial 14
+# iconv_h.m4 serial 15
 dnl Copyright (C) 2007-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -29,6 +29,10 @@ AC_DEFUN([gl_REPLACE_ICONV_H],
   AM_CONDITIONAL([GL_GENERATE_ICONV_H], [test -n "$ICONV_H"])
 ])
 
+# gl_ICONV_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_ICONV_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -36,6 +40,9 @@ AC_DEFUN([gl_ICONV_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_SET_VARIABLE([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_ICONV_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_ICONV_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/inttypes.m4 b/m4/inttypes.m4
index 4e814466c36be6034510cda8fdcf795034f99e87..64b1de5c42a2d9f1b48dae87223f1280c07a5fc8 100644 (file)
--- a/m4/inttypes.m4
+++ b/m4/inttypes.m4
@@ -1,4 +1,4 @@
-# inttypes.m4 serial 34
+# inttypes.m4 serial 35
 dnl Copyright (C) 2006-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -136,6 +136,10 @@ AC_DEFUN([gl_INTTYPES_CHECK_LONG_LONG_INT_CONDITION],
   AC_SUBST([$1])
 ])
 
+# gl_INTTYPES_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_INTTYPES_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -143,6 +147,9 @@ AC_DEFUN([gl_INTTYPES_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_SET_VARIABLE([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_INTTYPES_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_INTTYPES_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/langinfo_h.m4 b/m4/langinfo_h.m4
index 8e199dbf3ddf799dbc3b405af9b9d00c6dae0f27..87959f77a4ec0861788ea0a973749b25eb8c2eca 100644 (file)
--- a/m4/langinfo_h.m4
+++ b/m4/langinfo_h.m4
@@ -1,4 +1,4 @@
-# langinfo_h.m4 serial 11
+# langinfo_h.m4 serial 12
 dnl Copyright (C) 2009-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -104,6 +104,10 @@ int a = YESEXPR;
     ]], [nl_langinfo])
 ])
 
+# gl_LANGINFO_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_LANGINFO_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -113,6 +117,9 @@ AC_DEFUN([gl_LANGINFO_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_LANGINFO_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_LANGINFO_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/locale_h.m4 b/m4/locale_h.m4
index 44f0b49327e805cfb83a8e9ea504539d32a43d22..444a381785fd3e24dc93f710cbd1f236f9cbd192 100644 (file)
--- a/m4/locale_h.m4
+++ b/m4/locale_h.m4
@@ -1,4 +1,4 @@
-# locale_h.m4 serial 27
+# locale_h.m4 serial 28
 dnl Copyright (C) 2007, 2009-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -129,6 +129,10 @@ AC_DEFUN([gl_LOCALE_T],
   AC_SUBST([HAVE_XLOCALE_H])
 ])
 
+# gl_LOCALE_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_LOCALE_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -138,6 +142,9 @@ AC_DEFUN([gl_LOCALE_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_LOCALE_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_LOCALE_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/malloc_h.m4 b/m4/malloc_h.m4
index 6144ce50c7c82a0739ca5457c858820ff771bb35..fe7ca09172a3b9c9181cde81ca7ce4ed852ba880 100644 (file)
--- a/m4/malloc_h.m4
+++ b/m4/malloc_h.m4
@@ -1,4 +1,4 @@
-# malloc_h.m4 serial 3
+# malloc_h.m4 serial 4
 dnl Copyright (C) 2020-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -29,6 +29,10 @@ AC_DEFUN_ONCE([gl_MALLOC_H],
     ]], [memalign])
 ])
 
+# gl_MALLOC_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_MALLOC_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -38,6 +42,9 @@ AC_DEFUN([gl_MALLOC_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_MALLOC_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_MALLOC_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/math_h.m4 b/m4/math_h.m4
index 384aa9c74466beddaba75c6e102cdce1e465ba0f..b3a10c3fb1db5d6324c88cb510d88e911782e73c 100644 (file)
--- a/m4/math_h.m4
+++ b/m4/math_h.m4
@@ -1,4 +1,4 @@
-# math_h.m4 serial 124
+# math_h.m4 serial 125
 dnl Copyright (C) 2007-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -53,6 +53,10 @@ AC_DEFUN_ONCE([gl_MATH_H],
      tanf tanl tanhf trunc truncf truncl])
 ])
 
+# gl_MATH_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_MATH_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -62,6 +66,9 @@ AC_DEFUN([gl_MATH_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_MATH_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_MATH_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/monetary_h.m4 b/m4/monetary_h.m4
index dc56c1b1362eb5ab036c02a7ab03c0fcb5fa1b4f..8ffa2af113140202d4f9fa83f338891b866272c0 100644 (file)
--- a/m4/monetary_h.m4
+++ b/m4/monetary_h.m4
@@ -1,4 +1,4 @@
-# monetary_h.m4 serial 7
+# monetary_h.m4 serial 8
 dnl Copyright (C) 2017-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -47,6 +47,10 @@ AC_DEFUN_ONCE([gl_MONETARY_H],
   AM_CONDITIONAL([GL_GENERATE_MONETARY_H], [test -n "$MONETARY_H"])
 ])
 
+# gl_MONETARY_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_MONETARY_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -54,6 +58,9 @@ AC_DEFUN([gl_MONETARY_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_SET_VARIABLE([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_MONETARY_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_MONETARY_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/netdb_h.m4 b/m4/netdb_h.m4
index 69f7b78eacea98fa76a0af8aa01ea171f0a0f324..eb7c3b8b5311d854f1182b19a7902bd9f62fde17 100644 (file)
--- a/m4/netdb_h.m4
+++ b/m4/netdb_h.m4
@@ -1,4 +1,4 @@
-# netdb_h.m4 serial 14
+# netdb_h.m4 serial 15
 dnl Copyright (C) 2008-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -21,6 +21,10 @@ AC_DEFUN_ONCE([gl_NETDB_H],
     [getaddrinfo freeaddrinfo gai_strerror getnameinfo])
 ])
 
+# gl_NETDB_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_NETDB_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -30,6 +34,9 @@ AC_DEFUN([gl_NETDB_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_NETDB_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_NETDB_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/poll_h.m4 b/m4/poll_h.m4
index 3037676266ce78ef3a7e1a45f18416492f1cc200..1f0d7964a7ba4a973066be109bb84112bda2f797 100644 (file)
--- a/m4/poll_h.m4
+++ b/m4/poll_h.m4
@@ -1,4 +1,4 @@
-# poll_h.m4 serial 5
+# poll_h.m4 serial 6
 dnl Copyright (C) 2010-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -31,6 +31,10 @@ AC_DEFUN_ONCE([gl_POLL_H],
     [poll])
 ])
 
+# gl_POLL_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_POLL_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -40,6 +44,9 @@ AC_DEFUN([gl_POLL_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_POLL_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_POLL_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/pthread_h.m4 b/m4/pthread_h.m4
index d07d85d2e378976a6cdaac30f50989728aa4c139..62a6ca8284ac32e67f3e4846e1260a2832f24141 100644 (file)
--- a/m4/pthread_h.m4
+++ b/m4/pthread_h.m4
@@ -1,4 +1,4 @@
-# pthread_h.m4 serial 7
+# pthread_h.m4 serial 8
 dnl Copyright (C) 2009-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -137,6 +137,10 @@ AC_DEFUN_ONCE([gl_PTHREAD_H],
   AC_SUBST([LIB_PTHREAD])
 ])
 
+# gl_PTHREAD_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_PTHREAD_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -146,6 +150,9 @@ AC_DEFUN([gl_PTHREAD_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_PTHREAD_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_PTHREAD_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/pty_h.m4 b/m4/pty_h.m4
index 8fe5465eca179b6eac1b0cf4bd963f5382974924..172e6d6fae90a017a29256c2a54b915a892ffb80 100644 (file)
--- a/m4/pty_h.m4
+++ b/m4/pty_h.m4
@@ -1,4 +1,4 @@
-# pty_h.m4 serial 13
+# pty_h.m4 serial 14
 dnl Copyright (C) 2009-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -50,6 +50,10 @@ AC_DEFUN_ONCE([gl_PTY_H],
     ]], [forkpty openpty])
 ])
 
+# gl_PTY_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_PTY_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -59,6 +63,9 @@ AC_DEFUN([gl_PTY_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_PTY_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_PTY_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/sched_h.m4 b/m4/sched_h.m4
index 03377aa2c26ddb0bbe8af178fbfe544bc698e472..a840e3d6acd220811064bc8b002731558c0244b3 100644 (file)
--- a/m4/sched_h.m4
+++ b/m4/sched_h.m4
@@ -1,4 +1,4 @@
-# sched_h.m4 serial 14
+# sched_h.m4 serial 15
 dnl Copyright (C) 2008-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -73,6 +73,10 @@ AC_DEFUN_ONCE([gl_SCHED_H],
     ]], [sched_yield])
 ])
 
+# gl_SCHED_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_SCHED_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -82,6 +86,9 @@ AC_DEFUN([gl_SCHED_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_SCHED_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_SCHED_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/search_h.m4 b/m4/search_h.m4
index 6cdcfdfc60f552c04b1ceca1b74f95ef9681d55a..1d1e8bfddb155ad88aae24bbebf1e529de835018 100644 (file)
--- a/m4/search_h.m4
+++ b/m4/search_h.m4
@@ -1,4 +1,4 @@
-# search_h.m4 serial 14
+# search_h.m4 serial 15
 dnl Copyright (C) 2007-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -44,6 +44,10 @@ AC_DEFUN_ONCE([gl_SEARCH_H],
   AC_REQUIRE([AC_C_RESTRICT])
 ])
 
+# gl_SEARCH_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_SEARCH_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -53,6 +57,9 @@ AC_DEFUN([gl_SEARCH_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_SEARCH_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_SEARCH_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/signal_h.m4 b/m4/signal_h.m4
index f68e890c3d8906364fe28aafdafe9d42f0aea5e1..8b938809b7c096d2ce75347c37d3f85678f0da9b 100644 (file)
--- a/m4/signal_h.m4
+++ b/m4/signal_h.m4
@@ -1,4 +1,4 @@
-# signal_h.m4 serial 21
+# signal_h.m4 serial 22
 dnl Copyright (C) 2007-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -52,6 +52,10 @@ AC_DEFUN([gl_CHECK_TYPE_SIGSET_T],
   fi
 ])
 
+# gl_SIGNAL_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_SIGNAL_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -61,6 +65,9 @@ AC_DEFUN([gl_SIGNAL_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_SIGNAL_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_SIGNAL_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/spawn_h.m4 b/m4/spawn_h.m4
index 7dc515f5ea6db4f90ff2a20ebdb61cacdb3e8a08..134b7b9bc919da60c8edda473357200b14f68696 100644 (file)
--- a/m4/spawn_h.m4
+++ b/m4/spawn_h.m4
@@ -1,4 +1,4 @@
-# spawn_h.m4 serial 20
+# spawn_h.m4 serial 21
 dnl Copyright (C) 2008-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -79,6 +79,10 @@ AC_DEFUN([gl_HAVE_POSIX_SPAWN],
   fi
 ])
 
+# gl_SPAWN_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_SPAWN_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -88,6 +92,9 @@ AC_DEFUN([gl_SPAWN_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_SPAWN_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_SPAWN_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/stddef_h.m4 b/m4/stddef_h.m4
index 53a69dd6743d0d4595ba24e8381bfe1e7f777942..1303d2e06c7e698c97f6fa3152fb7a95461788d4 100644 (file)
--- a/m4/stddef_h.m4
+++ b/m4/stddef_h.m4
@@ -1,4 +1,4 @@
-# stddef_h.m4 serial 10
+# stddef_h.m4 serial 11
 dnl Copyright (C) 2009-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -68,6 +68,10 @@ AC_DEFUN_ONCE([gl_STDDEF_H],
   fi
 ])
 
+# gl_STDDEF_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_STDDEF_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -75,6 +79,9 @@ AC_DEFUN([gl_STDDEF_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_SET_VARIABLE([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_STDDEF_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_STDDEF_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/stdio_h.m4 b/m4/stdio_h.m4
index d9820e475416dfc3303c60a7d8a0fca3754d799a..e704383862df7d05d095627329b933a275b53314 100644 (file)
--- a/m4/stdio_h.m4
+++ b/m4/stdio_h.m4
@@ -1,4 +1,4 @@
-# stdio_h.m4 serial 55
+# stdio_h.m4 serial 56
 dnl Copyright (C) 2007-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -93,6 +93,10 @@ AC_DEFUN_ONCE([gl_STDIO_H],
   fi
 ])
 
+# gl_STDIO_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_STDIO_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -102,6 +106,9 @@ AC_DEFUN([gl_STDIO_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_STDIO_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_STDIO_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/stdlib_h.m4 b/m4/stdlib_h.m4
index e938b5aa54d7e3f9f0e77983e71aa19c0db821e8..2de57f78c43b3f21cfbb89d3579e0f924e772801 100644 (file)
--- a/m4/stdlib_h.m4
+++ b/m4/stdlib_h.m4
@@ -1,4 +1,4 @@
-# stdlib_h.m4 serial 61
+# stdlib_h.m4 serial 62
 dnl Copyright (C) 2007-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -46,6 +46,10 @@ AC_DEFUN_ONCE([gl_STDLIB_H],
   fi
 ])
 
+# gl_STDLIB_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_STDLIB_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -55,6 +59,9 @@ AC_DEFUN([gl_STDLIB_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_STDLIB_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_STDLIB_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/string_h.m4 b/m4/string_h.m4
index e44461f8b88cda6bb2fe43294f054eff5069d1c1..80d1e58753ffe4770f34bff384d8ac7a9b0fbb58 100644 (file)
--- a/m4/string_h.m4
+++ b/m4/string_h.m4
@@ -5,7 +5,7 @@
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
 
-# serial 31
+# serial 32
 
 # Written by Paul Eggert.
 
@@ -28,6 +28,10 @@ AC_DEFUN_ONCE([gl_STRING_H],
   AC_REQUIRE([AC_C_RESTRICT])
 ])
 
+# gl_STRING_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_STRING_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -37,6 +41,9 @@ AC_DEFUN([gl_STRING_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_STRING_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_STRING_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/strings_h.m4 b/m4/strings_h.m4
index da19d1b8762c40acee0bdfa0dd94cc32d7bec018..69de32ac5d1982c85c9658919c500df9db8088b6 100644 (file)
--- a/m4/strings_h.m4
+++ b/m4/strings_h.m4
@@ -1,5 +1,5 @@
 # Configure a replacement for <strings.h>.
-# serial 8
+# serial 9
 
 # Copyright (C) 2007, 2009-2021 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
@@ -30,6 +30,10 @@ AC_DEFUN_ONCE([gl_STRINGS_H],
     ]], [ffs strcasecmp strncasecmp])
 ])
 
+# gl_STRINGS_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_STRINGS_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -37,6 +41,9 @@ AC_DEFUN([gl_STRINGS_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_SET_VARIABLE([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_STRINGS_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_STRINGS_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/sys_file_h.m4 b/m4/sys_file_h.m4
index 4515c73a3c8c34fb247c2cc8e301249771500379..bcde4d70b52d878bc109046b0b1257cd7d20b02c 100644 (file)
--- a/m4/sys_file_h.m4
+++ b/m4/sys_file_h.m4
@@ -1,5 +1,5 @@
 # Configure a replacement for <sys/file.h>.
-# serial 8
+# serial 9
 
 # Copyright (C) 2008-2021 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
@@ -28,12 +28,19 @@ AC_DEFUN_ONCE([gl_SYS_FILE_H],
     ]], [flock])
 ])
 
+# gl_SYS_FILE_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_SYS_FILE_MODULE_INDICATOR],
 [
   gl_SYS_FILE_H_REQUIRE_DEFAULTS
   gl_MODULE_INDICATOR_SET_VARIABLE([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_SYS_FILE_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_SYS_FILE_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/sys_ioctl_h.m4 b/m4/sys_ioctl_h.m4
index 9f36509102648c1cc722388bbc1b20ee89262b0c..cd00410e16eff7f39b1f4f92fc125e299d804866 100644 (file)
--- a/m4/sys_ioctl_h.m4
+++ b/m4/sys_ioctl_h.m4
@@ -1,4 +1,4 @@
-# sys_ioctl_h.m4 serial 14
+# sys_ioctl_h.m4 serial 15
 dnl Copyright (C) 2008-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -44,6 +44,10 @@ AC_DEFUN_ONCE([gl_SYS_IOCTL_H],
     ]], [ioctl])
 ])
 
+# gl_SYS_IOCTL_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_SYS_IOCTL_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -53,6 +57,9 @@ AC_DEFUN([gl_SYS_IOCTL_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_SYS_IOCTL_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_SYS_IOCTL_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/sys_random_h.m4 b/m4/sys_random_h.m4
index 621601f15673163b5a19cf4edf3586bbae8de272..37bc31606bde753fd2a1acbee6fed9167cb54141 100644 (file)
--- a/m4/sys_random_h.m4
+++ b/m4/sys_random_h.m4
@@ -1,4 +1,4 @@
-# sys_random_h.m4 serial 7
+# sys_random_h.m4 serial 8
 dnl Copyright (C) 2020-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -35,6 +35,10 @@ AC_DEFUN_ONCE([gl_SYS_RANDOM_H],
     [getrandom])
 ])
 
+# gl_SYS_RANDOM_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_SYS_RANDOM_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -44,6 +48,9 @@ AC_DEFUN([gl_SYS_RANDOM_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_SYS_RANDOM_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_SYS_RANDOM_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/sys_resource_h.m4 b/m4/sys_resource_h.m4
index 4570a01c40df8c51a0a432d0b1d13e90216fe9ae..0b85e7b9cb136151cb4758d0d357e9c123bed3ee 100644 (file)
--- a/m4/sys_resource_h.m4
+++ b/m4/sys_resource_h.m4
@@ -1,4 +1,4 @@
-# sys_resource_h.m4 serial 4
+# sys_resource_h.m4 serial 5
 dnl Copyright (C) 2012-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -30,6 +30,10 @@ AC_DEFUN_ONCE([gl_SYS_RESOURCE_H],
     [getrusage])
 ])
 
+# gl_SYS_RESOURCE_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_SYS_RESOURCE_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -39,6 +43,9 @@ AC_DEFUN([gl_SYS_RESOURCE_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_SYS_RESOURCE_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_SYS_RESOURCE_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/sys_select_h.m4 b/m4/sys_select_h.m4
index 198bb052866e6ef33bb7a719ee7e5a537eb02302..2e7d140dee2eab68567d33fe79fe553818d1065e 100644 (file)
--- a/m4/sys_select_h.m4
+++ b/m4/sys_select_h.m4
@@ -1,4 +1,4 @@
-# sys_select_h.m4 serial 22
+# sys_select_h.m4 serial 23
 dnl Copyright (C) 2006-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -75,6 +75,10 @@ AC_DEFUN_ONCE([gl_SYS_SELECT_H],
     ]], [pselect select])
 ])
 
+# gl_SYS_SELECT_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_SYS_SELECT_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -84,6 +88,9 @@ AC_DEFUN([gl_SYS_SELECT_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_SYS_SELECT_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_SYS_SELECT_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/sys_socket_h.m4 b/m4/sys_socket_h.m4
index 8a8075c49498b2ea9b9d97a4dac9dfc446bb2b2d..5676a0d2170abb8085aa6dd1c492d15fd22ded1e 100644 (file)
--- a/m4/sys_socket_h.m4
+++ b/m4/sys_socket_h.m4
@@ -1,4 +1,4 @@
-# sys_socket_h.m4 serial 27
+# sys_socket_h.m4 serial 28
 dnl Copyright (C) 2005-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -156,6 +156,10 @@ AC_DEFUN([gl_PREREQ_SYS_H_WS2TCPIP],
   AC_SUBST([HAVE_WS2TCPIP_H])
 ])
 
+# gl_SYS_SOCKET_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_SYS_SOCKET_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -165,6 +169,9 @@ AC_DEFUN([gl_SYS_SOCKET_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_SYS_SOCKET_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_SYS_SOCKET_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/sys_stat_h.m4 b/m4/sys_stat_h.m4
index 02a621c4c1b67810cbd1486de81459e6a3076ce5..ac91d425bbbeaae2540e21b5872418cc0463afbd 100644 (file)
--- a/m4/sys_stat_h.m4
+++ b/m4/sys_stat_h.m4
@@ -1,4 +1,4 @@
-# sys_stat_h.m4 serial 40   -*- Autoconf -*-
+# sys_stat_h.m4 serial 41   -*- Autoconf -*-
 dnl Copyright (C) 2006-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -52,6 +52,10 @@ AC_DEFUN_ONCE([gl_SYS_STAT_H],
   AC_REQUIRE([AC_C_RESTRICT])
 ])
 
+# gl_SYS_STAT_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_SYS_STAT_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -61,6 +65,9 @@ AC_DEFUN([gl_SYS_STAT_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_SYS_STAT_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_SYS_STAT_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/sys_time_h.m4 b/m4/sys_time_h.m4
index 81b755d5c2413d858346f3931902173836b91f4b..c425a9639a168516a27a9b5551dc14f1d9f6cb04 100644 (file)
--- a/m4/sys_time_h.m4
+++ b/m4/sys_time_h.m4
@@ -1,5 +1,5 @@
 # Configure a replacement for <sys/time.h>.
-# serial 11
+# serial 12
 
 # Copyright (C) 2007, 2009-2021 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
@@ -84,6 +84,10 @@ AC_DEFUN_ONCE([gl_SYS_TIME_H],
     ]], [gettimeofday])
 ])
 
+# gl_SYS_TIME_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_SYS_TIME_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -93,6 +97,9 @@ AC_DEFUN([gl_SYS_TIME_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_SYS_TIME_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_SYS_TIME_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/sys_times_h.m4 b/m4/sys_times_h.m4
index c83a9d6b6cda87faf3b57af55d84f6c9c04d838a..577ead66ff309955267c51994dac3a53883bb4c0 100644 (file)
--- a/m4/sys_times_h.m4
+++ b/m4/sys_times_h.m4
@@ -1,5 +1,5 @@
 # Configure a replacement for <sys/times.h>.
-# serial 10
+# serial 11
 
 # Copyright (C) 2008-2021 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
@@ -36,6 +36,10 @@ AC_DEFUN_ONCE([gl_SYS_TIMES_H],
     ]], [times])
 ])
 
+# gl_SYS_TIMES_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_SYS_TIMES_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -43,6 +47,9 @@ AC_DEFUN([gl_SYS_TIMES_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_SET_VARIABLE([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_SYS_TIMES_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_SYS_TIMES_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/sys_types_h.m4 b/m4/sys_types_h.m4
index 53f2c0965ec21fbdc92c9cd689af36788612e40a..6dd6fee10c88e318b70451e2f838977f22ea10ae 100644 (file)
--- a/m4/sys_types_h.m4
+++ b/m4/sys_types_h.m4
@@ -1,4 +1,4 @@
-# sys_types_h.m4 serial 12
+# sys_types_h.m4 serial 13
 dnl Copyright (C) 2011-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -31,6 +31,9 @@ AC_DEFUN_ONCE([gl_SYS_TYPES_H],
   AC_SUBST([WINDOWS_STAT_INODES])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_SYS_TYPES_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_SYS_TYPE_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/sys_uio_h.m4 b/m4/sys_uio_h.m4
index baea88a07c5ae293fc769e7ab867b97d09f4cc9b..fa176e0b6ea7094e213440be3cd04ab07497b380 100644 (file)
--- a/m4/sys_uio_h.m4
+++ b/m4/sys_uio_h.m4
@@ -1,4 +1,4 @@
-# sys_uio_h.m4 serial 2
+# sys_uio_h.m4 serial 3
 dnl Copyright (C) 2011-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -17,6 +17,10 @@ AC_DEFUN_ONCE([gl_SYS_UIO_H],
   AC_SUBST([HAVE_SYS_UIO_H])
 ])
 
+# gl_SYS_UIO_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_SYS_UIO_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -26,6 +30,9 @@ AC_DEFUN([gl_SYS_UIO_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_SYS_UIO_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_SYS_UIO_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/sys_utsname_h.m4 b/m4/sys_utsname_h.m4
index cc1d8497c53fca73de0b74c4fd003a7aa662c314..9a0f0e37911f3a30a046173d6d99e5002cc240c5 100644 (file)
--- a/m4/sys_utsname_h.m4
+++ b/m4/sys_utsname_h.m4
@@ -1,4 +1,4 @@
-# sys_utsname_h.m4 serial 10
+# sys_utsname_h.m4 serial 11
 dnl Copyright (C) 2009-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -38,6 +38,10 @@ AC_DEFUN_ONCE([gl_SYS_UTSNAME_H],
     ]], [uname])
 ])
 
+# gl_SYS_UTSNAME_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_SYS_UTSNAME_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -45,6 +49,9 @@ AC_DEFUN([gl_SYS_UTSNAME_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_SET_VARIABLE([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_SYS_UTSNAME_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_SYS_UTSNAME_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/sys_wait_h.m4 b/m4/sys_wait_h.m4
index 294ab52c27051326c3d9396fbaadfa1c1dffcca8..d7c412adc1f2881ece3ce895c311aea19b9c51d7 100644 (file)
--- a/m4/sys_wait_h.m4
+++ b/m4/sys_wait_h.m4
@@ -1,4 +1,4 @@
-# sys_wait_h.m4 serial 8
+# sys_wait_h.m4 serial 9
 dnl Copyright (C) 2008-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -20,6 +20,10 @@ AC_DEFUN_ONCE([gl_SYS_WAIT_H],
     [waitpid])
 ])
 
+# gl_SYS_WAIT_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_SYS_WAIT_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -29,6 +33,9 @@ AC_DEFUN([gl_SYS_WAIT_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_SYS_WAIT_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_SYS_WAIT_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/termios_h.m4 b/m4/termios_h.m4
index c7d57fc976c4483648760229e845142e748a3bf3..861b232d58e10b215156675b52e53e6eabebd5de 100644 (file)
--- a/m4/termios_h.m4
+++ b/m4/termios_h.m4
@@ -1,4 +1,4 @@
-# termios_h.m4 serial 6
+# termios_h.m4 serial 7
 dnl Copyright (C) 2010-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -25,6 +25,10 @@ AC_DEFUN_ONCE([gl_TERMIOS_H],
     [tcgetsid])
 ])
 
+# gl_TERMIOS_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_TERMIOS_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -34,6 +38,9 @@ AC_DEFUN([gl_TERMIOS_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_TERMIOS_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_TERMIOS_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/threads.m4 b/m4/threads.m4
index 2a2bfeacb93e8795d710aeef2b45eb3b4d20eb87..53ec6d5e760fb8f27be119389bbfae99bfda768e 100644 (file)
--- a/m4/threads.m4
+++ b/m4/threads.m4
@@ -1,4 +1,4 @@
-# threads.m4 serial 9
+# threads.m4 serial 10
 dnl Copyright (C) 2019-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -137,6 +137,10 @@ AC_DEFUN([gl_THREAD_LOCAL_DEFINITION],
 #endif
 ]])
 
+# gl_THREADS_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_THREADS_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -146,6 +150,9 @@ AC_DEFUN([gl_THREADS_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_THREADS_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_THREADS_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/time_h.m4 b/m4/time_h.m4
index 8c8648eeec664aeda199c39ddc7bcd45ed938c75..b57474b48b300aa2b143ae7917adf9a26787c33c 100644 (file)
--- a/m4/time_h.m4
+++ b/m4/time_h.m4
@@ -2,7 +2,7 @@
 
 # Copyright (C) 2000-2001, 2003-2007, 2009-2021 Free Software Foundation, Inc.
 
-# serial 17
+# serial 18
 
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -106,6 +106,10 @@ AC_DEFUN([gl_CHECK_TYPE_STRUCT_TIMESPEC],
   AC_SUBST([UNISTD_H_DEFINES_STRUCT_TIMESPEC])
 ])
 
+# gl_TIME_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_TIME_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -115,6 +119,9 @@ AC_DEFUN([gl_TIME_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_TIME_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_TIME_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/uchar.m4 b/m4/uchar.m4
index 6ebe94de2aa258ec11a922ae00ae5ee4d2e3175a..1923f17906c4a40b2a802937d4034744b0d05661 100644 (file)
--- a/m4/uchar.m4
+++ b/m4/uchar.m4
@@ -1,4 +1,4 @@
-# uchar.m4 serial 19
+# uchar.m4 serial 20
 dnl Copyright (C) 2019-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -120,6 +120,10 @@ AC_DEFUN_ONCE([gl_TYPE_CHAR32_T],
   AC_SUBST([GNULIBHEADERS_OVERRIDE_CHAR32_T])
 ])
 
+# gl_UCHAR_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_UCHAR_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -129,6 +133,9 @@ AC_DEFUN([gl_UCHAR_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_UCHAR_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_UCHAR_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/unistd_h.m4 b/m4/unistd_h.m4
index ada0101c292161776400a6f43decf57e436fcf53..a40a41bc0e890dfb4c8673b44e7ca889859ae443 100644 (file)
--- a/m4/unistd_h.m4
+++ b/m4/unistd_h.m4
@@ -1,4 +1,4 @@
-# unistd_h.m4 serial 87
+# unistd_h.m4 serial 88
 dnl Copyright (C) 2006-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -59,6 +59,10 @@ AC_DEFUN_ONCE([gl_UNISTD_H],
   fi
 ])
 
+# gl_UNISTD_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_UNISTD_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -68,6 +72,9 @@ AC_DEFUN([gl_UNISTD_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_UNISTD_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_UNISTD_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/utime_h.m4 b/m4/utime_h.m4
index 1daed6e179da06cf018346d9e005b5a55494d3e5..e288bb15ccb2c59ac30368731dfaddc98bd6afb5 100644 (file)
--- a/m4/utime_h.m4
+++ b/m4/utime_h.m4
@@ -1,4 +1,4 @@
-# utime_h.m4 serial 7
+# utime_h.m4 serial 8
 dnl Copyright (C) 2017-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -28,6 +28,10 @@ AC_DEFUN_ONCE([gl_UTIME_H],
     [utime])
 ])
 
+# gl_UTIME_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_UTIME_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -37,6 +41,9 @@ AC_DEFUN([gl_UTIME_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_UTIME_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_UTIME_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/wchar_h.m4 b/m4/wchar_h.m4
index 9b3e2b0cbc88e272acc6d0426e2e22e071a8f32b..818b3192e0ab0c5d8c79d60ba68d9b8e49d6102b 100644 (file)
--- a/m4/wchar_h.m4
+++ b/m4/wchar_h.m4
@@ -7,7 +7,7 @@ dnl with or without modifications, as long as this notice is preserved.
 
 dnl Written by Eric Blake.
 
-# wchar_h.m4 serial 52
+# wchar_h.m4 serial 53
 
 AC_DEFUN_ONCE([gl_WCHAR_H],
 [
@@ -125,6 +125,10 @@ Configuration aborted.])
   fi
 ])
 
+# gl_WCHAR_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_WCHAR_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -134,6 +138,9 @@ AC_DEFUN([gl_WCHAR_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_WCHAR_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_WCHAR_H_MODULE_INDICATOR_DEFAULTS], [

diff --git a/m4/wctype_h.m4 b/m4/wctype_h.m4
index b32c8634a41ce7330e8b7740052c8e1ecdbf462d..7d742127753a358d6fe6e393e1bc9995baaace45 100644 (file)
--- a/m4/wctype_h.m4
+++ b/m4/wctype_h.m4
@@ -1,4 +1,4 @@
-# wctype_h.m4 serial 29
+# wctype_h.m4 serial 30
 
 dnl A placeholder for ISO C99 <wctype.h>, for platforms that lack it.
 
@@ -157,6 +157,10 @@ AC_DEFUN_ONCE([gl_WCTYPE_H],
     ])
 ])
 
+# gl_WCTYPE_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
 AC_DEFUN([gl_WCTYPE_MODULE_INDICATOR],
 [
   dnl Ensure to expand the default settings once only.
@@ -166,6 +170,9 @@ AC_DEFUN([gl_WCTYPE_MODULE_INDICATOR],
   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
 AC_DEFUN([gl_WCTYPE_H_REQUIRE_DEFAULTS],
 [
   m4_defun(GL_MODULE_INDICATOR_PREFIX[_WCTYPE_H_MODULE_INDICATOR_DEFAULTS], [