/* * have_strlcpy - determine if we have strlcpy() * * Copyright (C) 2021 Landon Curt Noll * * Calc is open software; you can redistribute it and/or modify it under * the terms of the version 2.1 of the GNU Lesser General Public License * as published by the Free Software Foundation. * * Calc is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General * Public License for more details. * * A copy of version 2.1 of the GNU Lesser General Public License is * distributed with calc under the filename COPYING-LGPL. You should have * received a copy with calc; if not, write to Free Software Foundation, Inc. * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * * Under source code control: 2021/03/08 20:34:13 * File existed as early as: 2021 * * chongo /\oo/\ http://www.isthe.com/chongo/ * Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/ */ /* * usage: * have_strlcpy * * Not all systems have the strlcpy() function, so this may not * compile on your system. * * This prog outputs several defines: * * HAVE_STRLCPY * defined ==> use strlcpy() * undefined ==> do not or cannot call strlcpy() */ #include #include "have_string.h" #ifdef HAVE_STRING_H # include #endif #include "banned.h" /* include after system header <> includes */ #define BUF_SIZ (sizeof("abcde")-1) char src[BUF_SIZ+1] = "abcde"; int main(void) { #if defined(HAVE_NO_STRLCPY) printf("#undef HAVE_STRLCPY /* no */\n"); #else /* HAVE_NO_STRLCPY */ char dst[BUF_SIZ+1]; (void) strlcpy(dst, src, sizeof(dst)); printf("#define HAVE_STRLCPY /* yes */\n"); #endif /* HAVE_NO_STRLCPY */ /* exit(0); */ return 0; }