| | 1 | # -*- Autoconf -*- |
| | 2 | # Sanity-test a C++ compiler. |
| | 3 | # |
| | 4 | # Copyright (C) 2004, 2006 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 3 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, see <http://www.gnu.org/licenses/>. |
| | 18 | |
| | 19 | # Written by Paul Eggert. |
| | 20 | |
| | 21 | AC_DEFUN([BISON_TEST_FOR_WORKING_CXX_COMPILER], |
| | 22 | [ |
| | 23 | AC_CACHE_CHECK([whether $CXX builds executables that work], |
| | 24 | bison_cv_cxx_works, |
| | 25 | [AC_LANG_PUSH([C++]) |
| | 26 | bison_cv_cxx_works=no |
| | 27 | AC_COMPILE_IFELSE( |
| | 28 | [AC_LANG_PROGRAM( |
| | 29 | [#include <cstdlib> |
| | 30 | #include <iostream> |
| | 31 | #include <map> |
| | 32 | #include <string> |
| | 33 | using namespace std;], |
| | 34 | [std::cerr << ""; |
| | 35 | cout << ""; |
| | 36 | typedef std::pair<unsigned int, int> uipair; |
| | 37 | std::map<unsigned int, int> m; |
| | 38 | std::map<unsigned int, int>::iterator i; |
| | 39 | m.insert (uipair (4, -4)); |
| | 40 | for (i = m.begin (); i != m.end (); ++i) |
| | 41 | if (i->first != 4) |
| | 42 | return 1;])], |
| | 43 | [AS_IF([AC_TRY_COMMAND([$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]) |
| | 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]) |
| | 59 | AM_CONDITIONAL(BISON_CXX_WORKS, test $bison_cv_cxx_works = yes) |
| | 60 | ]) |
projects / bison.git / blame_incremental