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-rw-r--r--gnulib-m4/iconv_h.m455
1 files changed, 42 insertions, 13 deletions
diff --git a/gnulib-m4/iconv_h.m4 b/gnulib-m4/iconv_h.m4
index 824f90c..5846566 100644
--- a/gnulib-m4/iconv_h.m4
+++ b/gnulib-m4/iconv_h.m4
@@ -1,41 +1,70 @@
-# iconv_h.m4 serial 8
-dnl Copyright (C) 2007-2018 Free Software Foundation, Inc.
+# iconv_h.m4 serial 16
+dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
-AC_DEFUN([gl_ICONV_H],
+AC_DEFUN_ONCE([gl_ICONV_H],
[
AC_REQUIRE([gl_ICONV_H_DEFAULTS])
- dnl Execute this unconditionally, because ICONV_H may be set by other
- dnl modules, after this code is executed.
+ dnl Execute this unconditionally, because GL_GENERATE_ICONV_H may be set to
+ dnl true by other modules, after this code is executed.
gl_CHECK_NEXT_HEADERS([iconv.h])
+
+ dnl Check for declarations of anything we want to poison if the
+ dnl corresponding gnulib module is not in use, and which is not
+ dnl guaranteed by C89.
+ gl_WARN_ON_USE_PREPARE([[#include <iconv.h>
+ ]], [iconv iconv_open])
+
+ AC_REQUIRE([AC_C_RESTRICT])
])
dnl Unconditionally enables the replacement of <iconv.h>.
AC_DEFUN([gl_REPLACE_ICONV_H],
[
- AC_REQUIRE([gl_ICONV_H_DEFAULTS])
- ICONV_H='iconv.h'
- AM_CONDITIONAL([GL_GENERATE_ICONV_H], [test -n "$ICONV_H"])
+ gl_ICONV_H_REQUIRE_DEFAULTS
+ GL_GENERATE_ICONV_H=true
])
+# 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 Use AC_REQUIRE here, so that the default settings are expanded once only.
- AC_REQUIRE([gl_ICONV_H_DEFAULTS])
+ dnl Ensure to expand the default settings once only.
+ gl_ICONV_H_REQUIRE_DEFAULTS
gl_MODULE_INDICATOR_SET_VARIABLE([$1])
])
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd. It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_ICONV_H_REQUIRE_DEFAULTS],
+[
+ m4_defun(GL_MODULE_INDICATOR_PREFIX[_ICONV_H_MODULE_INDICATOR_DEFAULTS], [
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ICONV])
+ ])
+ m4_require(GL_MODULE_INDICATOR_PREFIX[_ICONV_H_MODULE_INDICATOR_DEFAULTS])
+ AC_REQUIRE([gl_ICONV_H_DEFAULTS])
+])
+
AC_DEFUN([gl_ICONV_H_DEFAULTS],
[
- GNULIB_ICONV=0; AC_SUBST([GNULIB_ICONV])
+ m4_ifdef([gl_ANSI_CXX], [AC_REQUIRE([gl_ANSI_CXX])])
dnl Assume proper GNU behavior unless another module says otherwise.
ICONV_CONST=; AC_SUBST([ICONV_CONST])
REPLACE_ICONV=0; AC_SUBST([REPLACE_ICONV])
REPLACE_ICONV_OPEN=0; AC_SUBST([REPLACE_ICONV_OPEN])
REPLACE_ICONV_UTF=0; AC_SUBST([REPLACE_ICONV_UTF])
- ICONV_H=''; AC_SUBST([ICONV_H])
- AM_CONDITIONAL([GL_GENERATE_ICONV_H], [test -n "$ICONV_H"])
+ GL_GENERATE_ICONV_H=false
+ m4_ifdef([gl_POSIXCHECK],
+ [GL_GENERATE_ICONV_H=true],
+ [if m4_ifdef([gl_ANSI_CXX], [test "$CXX" != no], [false]); then
+ dnl Override <fnmatch.h> always, to support the C++ GNULIB_NAMESPACE.
+ GL_GENERATE_ICONV_H=true
+ fi
+ ])
])