projects / bison.git / blame
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|---|---|---|
| 209ea708 PE |
1 | # -*- Autoconf -*- |
| 2 | # Sanity-test a C++ compiler. | |
| 3 | # | |
| c21493b8 | 4 | # Copyright (C) 2004, 2006 Free Software Foundation, Inc. |
| 209ea708 | 5 | # |
| f16b0819 | 6 | # This program is free software: you can redistribute it and/or modify |
| 209ea708 | 7 | # it under the terms of the GNU General Public License as published by |
| f16b0819 | 8 | # the Free Software Foundation, either version 3 of the License, or |
| 209ea708 PE |
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 | |
| f16b0819 | 17 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 209ea708 | 18 | |
| c21493b8 | 19 | # Written by Paul Eggert. |
| 209ea708 PE |
20 | |
| 21 | AC_DEFUN([BISON_TEST_FOR_WORKING_CXX_COMPILER], | |
| 22 | [ | |
| 23 | AC_CACHE_CHECK([whether $CXX builds executables that work], | |
| 24 | bison_cv_cxx_works, | |
| 25 | [AC_LANG_PUSH([C++]) | |
| 0be105dc PE |
26 | bison_cv_cxx_works=no |
| 27 | AC_COMPILE_IFELSE( | |
| 209ea708 | 28 | [AC_LANG_PROGRAM( |
| c21493b8 PE |
29 | [#include <cstdlib> |
| 30 | #include <iostream> | |
| d9735e9e | 31 | #include <map> |
| 8c86f0ef | 32 | #include <string> |
| 209ea708 | 33 | using namespace std;], |
| 07971983 | 34 | [std::cerr << ""; |
| d9735e9e PE |
35 | cout << ""; |
| 36 | typedef std::pair<unsigned int, int> uipair; | |
| 37 | std::map<unsigned int, int> m; | |
| 38 | std::map<unsigned int, int>::iterator i; | |
| 39 | m.insert (uipair (4, -4)); | |
| 40 | for (i = m.begin (); i != m.end (); ++i) | |
| 41 | if (i->first != 4) | |
| 42 | return 1;])], | |
| 0be105dc PE |
43 | [AS_IF([AC_TRY_COMMAND([$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_objext $LIBS >&AS_MESSAGE_LOG_FD])], |
| 44 | [AS_IF([test "$cross_compiling" = yes], | |
| 45 | [bison_cv_cxx_works=cross], | |
| 46 | [AS_IF([AC_TRY_COMMAND(./conftest$ac_exeext)], | |
| 47 | [bison_cv_cxx_works=yes])])]) | |
| 48 | rm -f conftest$ac_exeext]) | |
| 209ea708 PE |
49 | AC_LANG_POP([C++])]) |
| 50 | ||
| 51 | case $bison_cv_cxx_works in | |
| 52 | yes) | |
| 53 | BISON_CXX_WORKS=':';; | |
| 54 | no | cross) | |
| 55 | BISON_CXX_WORKS='exit 77';; | |
| 56 | esac | |
| 57 | ||
| 58 | AC_SUBST([BISON_CXX_WORKS]) | |
| 5210672f | 59 | AM_CONDITIONAL(BISON_CXX_WORKS, test $bison_cv_cxx_works = yes) |
| 209ea708 | 60 | ]) |