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 PE |
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 | 20 | |
| c21493b8 | 21 | # Written by Paul Eggert. |
| 209ea708 PE |
22 | |
| 23 | AC_DEFUN([BISON_TEST_FOR_WORKING_CXX_COMPILER], | |
| 24 | [ | |
| 25 | AC_CACHE_CHECK([whether $CXX builds executables that work], | |
| 26 | bison_cv_cxx_works, | |
| 27 | [AC_LANG_PUSH([C++]) | |
| 0be105dc PE |
28 | bison_cv_cxx_works=no |
| 29 | AC_COMPILE_IFELSE( | |
| 209ea708 | 30 | [AC_LANG_PROGRAM( |
| c21493b8 PE |
31 | [#include <cstdlib> |
| 32 | #include <iostream> | |
| d9735e9e | 33 | #include <map> |
| 8c86f0ef | 34 | #include <string> |
| 209ea708 | 35 | using namespace std;], |
| 07971983 | 36 | [std::cerr << ""; |
| d9735e9e PE |
37 | cout << ""; |
| 38 | typedef std::pair<unsigned int, int> uipair; | |
| 39 | std::map<unsigned int, int> m; | |
| 40 | std::map<unsigned int, int>::iterator i; | |
| 41 | m.insert (uipair (4, -4)); | |
| 42 | for (i = m.begin (); i != m.end (); ++i) | |
| 43 | if (i->first != 4) | |
| 44 | return 1;])], | |
| 0be105dc PE |
45 | [AS_IF([AC_TRY_COMMAND([$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_objext $LIBS >&AS_MESSAGE_LOG_FD])], |
| 46 | [AS_IF([test "$cross_compiling" = yes], | |
| 47 | [bison_cv_cxx_works=cross], | |
| 48 | [AS_IF([AC_TRY_COMMAND(./conftest$ac_exeext)], | |
| 49 | [bison_cv_cxx_works=yes])])]) | |
| 50 | rm -f conftest$ac_exeext]) | |
| 209ea708 PE |
51 | AC_LANG_POP([C++])]) |
| 52 | ||
| 53 | case $bison_cv_cxx_works in | |
| 54 | yes) | |
| 55 | BISON_CXX_WORKS=':';; | |
| 56 | no | cross) | |
| 57 | BISON_CXX_WORKS='exit 77';; | |
| 58 | esac | |
| 59 | ||
| 60 | AC_SUBST([BISON_CXX_WORKS]) | |
| 5210672f | 61 | AM_CONDITIONAL(BISON_CXX_WORKS, test $bison_cv_cxx_works = yes) |
| 209ea708 | 62 | ]) |