/* Copyright (C) 2012-2019 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include "config.h" /* This is a merge of code recommended in the autoconf-2.61 documentation with that recommended in the autoconf-2.13 documentation, with added tweaks to heed C_ALLOCA. */ #if defined HAVE_ALLOCA_H && !defined C_ALLOCA # include <alloca.h> #else # if defined __GNUC__ && !defined C_ALLOCA # if !defined alloca # define alloca __builtin_alloca # endif # else # if defined _AIX /* Indented so that pre-ansi C compilers will ignore it, rather than choke on it. Some versions of AIX require this to be the first thing seen by the compiler except for comments and preprocessor directives. */ #pragma alloca # else # if defined _MSC_VER && !defined C_ALLOCA # include <malloc.h> # define alloca _alloca # else # if !defined alloca # if defined __STDC__ || defined __hpux # if defined HAVE_STDDEF_H # include <stddef.h> # if defined __cplusplus extern "C" void *alloca (size_t); # else extern void *alloca (size_t); # endif # else extern void *alloca (); # endif # else extern char *alloca (); # endif # endif # endif # endif # endif #endif