Add missing dependencies to 'extensions' module.

ChangeLog

@@ -1,3 +1,24 @@
+2009-12-24  Bruno Haible  <bruno@clisp.org>
+
+	Add missing dependencies to 'extensions' module.
+	* m4/extensions.m4: Add comment.
+	* modules/accept4 (Depends-on): Add extensions.
+	* modules/dup3 (Depends-on): Likewise.
+	* modules/fcntl (Depends-on): Likewise.
+	* modules/futimens (Depends-on): Likewise.
+	* modules/mknod (Depends-on): Likewise.
+	* modules/pipe2 (Depends-on): Likewise.
+	* modules/stat-time (Depends-on): Likewise.
+	* modules/strcasestr-simple (Depends-on): Likewise.
+	* modules/strsignal (Depends-on): Likewise.
+	* modules/utimensat (Depends-on): Likewise.
+	* modules/localcharset (Depends-on): Likewise. Needed because of
+	gl_FCNTL_O_FLAGS.
+	* modules/wcrtomb (Depends-on): Likewise. Needed because of
+	AC_TYPE_MBSTATE_T.
+	* modules/wcsnrtombs (Depends-on): Likewise.
+	* modules/wcsrtombs (Depends-on): Likewise.
+
 2009-12-24  Bruno Haible  <bruno@clisp.org>
 
 	binary-io: Avoid gcc warning due to SET_BINARY.

m4/extensions.m4

@@ -1,4 +1,4 @@
-# serial 8  -*- Autoconf -*-
+# serial 9  -*- Autoconf -*-
 # Enable extensions on systems that normally disable them.
 
 # Copyright (C) 2003, 2006-2009 Free Software Foundation, Inc.
@@ -12,6 +12,20 @@
 # enough in this area it's likely we'll need to redefine
 # AC_USE_SYSTEM_EXTENSIONS for quite some time.
 
+# If autoconf reports a warning
+#     warning: AC_COMPILE_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS
+# or  warning: AC_RUN_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS
+# the fix is
+#   1) to ensure that AC_USE_SYSTEM_EXTENSIONS is never directly invoked
+#      but always AC_REQUIREd,
+#   2) to ensure that for each occurrence of
+#        AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+#      or
+#        AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+#      the corresponding gnulib module description has 'extensions' among
+#      its dependencies. This will ensure that the gl_USE_SYSTEM_EXTENSIONS
+#      invocation occurs in gl_EARLY, not in gl_INIT.
+
 # AC_USE_SYSTEM_EXTENSIONS
 # ------------------------
 # Enable extensions on systems that normally disable them,

modules/accept4

@@ -11,6 +11,7 @@ sys_socket
 accept
 fcntl-h
 binary-io
+extensions
 
 configure.ac:
 gl_FUNC_ACCEPT4

modules/dup3

@@ -10,6 +10,7 @@ unistd
 fcntl
 binary-io
 getdtablesize
+extensions
 
 configure.ac:
 gl_FUNC_DUP3

modules/fcntl

@@ -8,6 +8,7 @@ lib/fcntl.c
 Depends-on:
 dup2
 fcntl-h
+extensions
 
 configure.ac:
 gl_FUNC_FCNTL

modules/futimens

@@ -8,6 +8,7 @@ m4/futimens.m4
 Depends-on:
 sys_stat
 utimens
+extensions
 
 configure.ac:
 gl_FUNC_FUTIMENS

modules/localcharset

@@ -20,6 +20,7 @@ m4/localcharset.m4
 
 Depends-on:
 configmake
+extensions
 
 configure.ac:
 gl_LOCALCHARSET

modules/mknod

@@ -9,6 +9,7 @@ Depends-on:
 mkfifo
 stat
 sys_stat
+extensions
 
 configure.ac:
 gl_FUNC_MKNOD

modules/pipe2

@@ -9,6 +9,7 @@ Depends-on:
 unistd
 fcntl-h
 binary-io
+extensions
 
 configure.ac:
 gl_FUNC_PIPE2

modules/stat-time

@@ -7,6 +7,7 @@ m4/stat-time.m4
 
 Depends-on:
 time
+extensions
 
 configure.ac:
 gl_STAT_TIME

modules/strcasestr-simple

@@ -12,6 +12,7 @@ stdbool
 strcase
 memchr
 memcmp
+extensions
 
 configure.ac:
 gl_FUNC_STRCASESTR_SIMPLE

modules/strsignal

@@ -13,6 +13,7 @@ lock
 tls
 snprintf
 memset
+extensions
 
 configure.ac:
 gl_FUNC_STRSIGNAL

modules/utimensat

@@ -9,6 +9,7 @@ Depends-on:
 openat
 sys_stat
 utimens
+extensions
 
 configure.ac:
 gl_FUNC_UTIMENSAT

modules/wcrtomb

@@ -12,6 +12,7 @@ m4/locale-zh.m4
 m4/codeset.m4
 
 Depends-on:
+extensions
 wchar
 mbsinit
 

modules/wcsnrtombs

@@ -12,6 +12,7 @@ m4/locale-zh.m4
 m4/codeset.m4
 
 Depends-on:
+extensions
 wchar
 wcrtomb
 

modules/wcsrtombs

@@ -13,6 +13,7 @@ m4/locale-zh.m4
 m4/codeset.m4
 
 Depends-on:
+extensions
 wchar
 wcrtomb