| | 1 | # -*- Autoconf -*- |
| | 2 | # Sanity-test a C++ compiler. |
| | 3 | # |
| | 4 | # Copyright (C) 2004 Free Software Foundation, Inc. |
| | 5 | # |
| | 6 | # This program is free software; you can redistribute it and/or modify |
| | 7 | # it under the terms of the GNU General Public License as published by |
| | 8 | # the Free Software Foundation; either version 2 of the License, or |
| | 9 | # (at your option) any later version. |
| | 10 | # |
| | 11 | # This program is distributed in the hope that it will be useful, |
| | 12 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| | 13 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| | 14 | # GNU General Public License for more details. |
| | 15 | # |
| | 16 | # You should have received a copy of the GNU General Public License |
| | 17 | # along with this program; if not, write to the Free Software |
| | 18 | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| | 19 | # 02110-1301 USA |
| | 20 | |
| | 21 | # Written by Paul Eggert <eggert@cs.ucla.edu>. |
| | 22 | |
| | 23 | AC_DEFUN([BISON_TEST_FOR_WORKING_CXX_COMPILER], |
| | 24 | [ |
| | 25 | AC_CACHE_CHECK([whether $CXX builds executables that work], |
| | 26 | bison_cv_cxx_works, |
| | 27 | [AC_LANG_PUSH([C++]) |
| | 28 | AC_RUN_IFELSE( |
| | 29 | [AC_LANG_PROGRAM( |
| | 30 | [#include <iostream> |
| | 31 | using namespace std;], |
| | 32 | [std::cerr << ""; |
| | 33 | cout << "";])], |
| | 34 | [bison_cv_cxx_works=yes], |
| | 35 | [bison_cv_cxx_works=no], |
| | 36 | [bison_cv_cxx_works=cross]) |
| | 37 | AC_LANG_POP([C++])]) |
| | 38 | |
| | 39 | case $bison_cv_cxx_works in |
| | 40 | yes) |
| | 41 | BISON_CXX_WORKS=':';; |
| | 42 | no | cross) |
| | 43 | BISON_CXX_WORKS='exit 77';; |
| | 44 | esac |
| | 45 | |
| | 46 | AC_SUBST([BISON_CXX_WORKS]) |
| | 47 | AM_CONDITIONAL(BISON_CXX_WORKS, test $bison_cv_cxx_works = yes) |
| | 48 | ]) |
projects / bison.git / blame_incremental