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# ===========================================================================
# https://www.gnu.org/software/autoconf-archive/ax_c_long_long.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_C_LONG_LONG
#
# DESCRIPTION
#
# Provides a test for the existence of the long long int type and defines
# HAVE_LONG_LONG if it is found.
#
# LICENSE
#
# Copyright (c) 2008 Caolan McNamara <caolan@skynet.ie>
#
# 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. This file is offered as-is, without any
# warranty.
#serial 7
AU_ALIAS([AC_C_LONG_LONG], [AX_C_LONG_LONG])
AC_DEFUN([AX_C_LONG_LONG],
[AC_CACHE_CHECK(for long long int, ac_cv_c_long_long,
[if test "$GCC" = yes; then
ac_cv_c_long_long=yes
else
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [[long long int i;]])],
[ac_cv_c_long_long=yes],
[ac_cv_c_long_long=no])
fi])
if test $ac_cv_c_long_long = yes; then
AC_DEFINE(HAVE_LONG_LONG, 1, [compiler understands long long])
fi
])
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