build: Remove check for buggy snprintf().

This check has not found any problematic snprintf() so far. But more
importantly, it uses AC_RUN_IFELSE() which should be avoided since
it can not work for cross-compile setups. Remove the check.

diff --git a/configure.ac b/configure.ac
index ec3460592da85751f36a8bf92f62cf7687241e30..ff32efe3e86997b09869545dc75d11a0de5342e6 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -199,87 +199,6 @@ play_errlist_objs="play fd sched ggo buffer_tree time string net
 "
 play_cmdline_objs="add_cmdline(http_recv dccp_recv udp_recv afh_recv compress_filter amp_filter prebuffer_filter file_write play)"
 play_ldflags="-lm"
-########################################################################### snprintf
-# ===========================================================================
-#        http://www.nongnu.org/autoconf-archive/ax_func_snprintf.html
-# ===========================================================================
-#
-# SYNOPSIS
-#
-#   AX_FUNC_SNPRINTF
-#
-# DESCRIPTION
-#
-#   Checks for a fully C99 compliant snprintf, in particular checks whether
-#   it does bounds checking and returns the correct string length; does the
-#   same check for vsnprintf. If no working snprintf or vsnprintf is found,
-#   it prints an error message and aborts.
-#
-# LICENSE
-#
-#   Copyright (c) 2008 Ruediger Kuhlmann <info@ruediger-kuhlmann.de>
-#
-#   Copying and distribution of this file, with or without modification, are
-#   permitted in any medium without royalty provided the copyright notice
-#   and this notice are preserved.
-
-AU_ALIAS([AC_FUNC_SNPRINTF], [AX_FUNC_SNPRINTF])
-AC_DEFUN([AX_FUNC_SNPRINTF],
-[AC_CHECK_FUNCS(snprintf vsnprintf)
-AC_MSG_CHECKING(for working snprintf)
-AC_CACHE_VAL(ac_cv_have_working_snprintf,
-[AC_RUN_IFELSE([AC_LANG_SOURCE([[
-#include <stdio.h>
-
-int main(void)
-{
-    char bufs[5] = { 'x', 'x', 'x', '\0', '\0' };
-    char bufd[5] = { 'x', 'x', 'x', '\0', '\0' };
-    int i;
-    i = snprintf (bufs, 2, "%s", "111");
-    if (strcmp (bufs, "1")) exit (1);
-    if (i != 3) exit (1);
-    i = snprintf (bufd, 2, "%d", 111);
-    if (strcmp (bufd, "1")) exit (1);
-    if (i != 3) exit (1);
-    exit(0);
-}]])],[ac_cv_have_working_snprintf=yes],
-[ac_cv_have_working_snprintf=no],[ac_cv_have_working_snprintf=cross])])
-AC_MSG_RESULT([$ac_cv_have_working_snprintf])
-AC_MSG_CHECKING(for working vsnprintf)
-AC_CACHE_VAL(ac_cv_have_working_vsnprintf,
-[AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdio.h>
-#include <stdarg.h>
-
-int my_vsnprintf (char *buf, const char *tmpl, ...)
-{
-    int i;
-    va_list args;
-    va_start (args, tmpl);
-    i = vsnprintf (buf, 2, tmpl, args);
-    va_end (args);
-    return i;
-}
-
-int main(void)
-{
-    char bufs[5] = { 'x', 'x', 'x', '\0', '\0' };
-    char bufd[5] = { 'x', 'x', 'x', '\0', '\0' };
-    int i;
-    i = my_vsnprintf (bufs, "%s", "111");
-    if (strcmp (bufs, "1")) exit (1);
-    if (i != 3) exit (1);
-    i = my_vsnprintf (bufd, "%d", 111);
-    if (strcmp (bufd, "1")) exit (1);
-    if (i != 3) exit (1);
-    exit(0);
-}]])],[ac_cv_have_working_vsnprintf=yes],
-[ac_cv_have_working_vsnprintf=no],[ac_cv_have_working_vsnprintf=cross])])
-AC_MSG_RESULT([$ac_cv_have_working_vsnprintf])
-if test x$ac_cv_have_working_snprintf$ac_cv_have_working_vsnprintf != "xyesyes"; then
-AC_MSG_ERROR([fatal: buggy snprintf() detected])
-fi])
-AX_FUNC_SNPRINTF()
 ################################################################## clock_gettime
 clock_gettime_lib=
 AC_CHECK_LIB([c], [clock_gettime], [clock_gettime_lib=c], [