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# vsnprintf.m4 serial 7
dnl Copyright (C) 2002-2004, 2007-2020 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.
dnl Libintl 0.17 will replace vsnprintf only if it does not support %1$s,
dnl but defers to any gnulib vsnprintf replacements. Therefore, gnulib
dnl must guarantee that the decision for replacing vsnprintf is a superset
dnl of the reasons checked by libintl.
AC_DEFUN([gl_FUNC_VSNPRINTF],
[
AC_REQUIRE([gl_STDIO_H_DEFAULTS])
gl_cv_func_vsnprintf_usable=no
AC_CHECK_FUNCS([vsnprintf])
if test $ac_cv_func_vsnprintf = yes; then
gl_SNPRINTF_SIZE1
case "$gl_cv_func_snprintf_size1" in
*yes)
gl_SNPRINTF_RETVAL_C99
case "$gl_cv_func_snprintf_retval_c99" in
*yes)
gl_PRINTF_POSITIONS
case "$gl_cv_func_printf_positions" in
*yes)
gl_cv_func_vsnprintf_usable=yes
;;
esac
;;
esac
;;
esac
fi
if test $gl_cv_func_vsnprintf_usable = no; then
gl_REPLACE_VSNPRINTF
fi
AC_CHECK_DECLS_ONCE([vsnprintf])
if test $ac_cv_have_decl_vsnprintf = no; then
HAVE_DECL_VSNPRINTF=0
fi
])
AC_DEFUN([gl_REPLACE_VSNPRINTF],
[
AC_REQUIRE([gl_STDIO_H_DEFAULTS])
AC_LIBOBJ([vsnprintf])
if test $ac_cv_func_vsnprintf = yes; then
REPLACE_VSNPRINTF=1
else
AC_CHECK_DECLS_ONCE([vsnprintf])
if test $ac_cv_have_decl_vsnprintf = yes; then
dnl If the function is declared but does not appear to exist, it may be
dnl defined as an inline function. In order to avoid a conflict, we have
dnl to define rpl_vsnprintf, not vsnprintf.
REPLACE_VSNPRINTF=1
fi
fi
gl_PREREQ_VSNPRINTF
])
# Prerequisites of lib/vsnprintf.c.
AC_DEFUN([gl_PREREQ_VSNPRINTF], [:])
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