projects / bison.git / blame
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|---|---|---|
| 209ea708 PE |
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 | |
| 0fb669f9 PE |
18 | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 19 | # 02110-1301 USA | |
| 209ea708 PE |
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;], | |
| 07971983 PE |
32 | [std::cerr << ""; |
| 33 | cout << "";])], | |
| 209ea708 PE |
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 | ]) |