Index: bison/src/bison/2.4.1/bison-2.4.1-src/m4/cxx.m4 |
=================================================================== |
--- bison/src/bison/2.4.1/bison-2.4.1-src/m4/cxx.m4 (revision 0) |
+++ bison/src/bison/2.4.1/bison-2.4.1-src/m4/cxx.m4 (revision 0) |
@@ -0,0 +1,60 @@ |
+# -*- Autoconf -*- |
+# Sanity-test a C++ compiler. |
+# |
+# Copyright (C) 2004, 2006 Free Software Foundation, Inc. |
+# |
+# This program is free software: you can redistribute it and/or modify |
+# it under the terms of the GNU General Public License as published by |
+# the Free Software Foundation, either version 3 of the License, or |
+# (at your option) any later version. |
+# |
+# This program is distributed in the hope that it will be useful, |
+# but WITHOUT ANY WARRANTY; without even the implied warranty of |
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
+# GNU General Public License for more details. |
+# |
+# You should have received a copy of the GNU General Public License |
+# along with this program. If not, see <http://www.gnu.org/licenses/>. |
+ |
+# Written by Paul Eggert. |
+ |
+AC_DEFUN([BISON_TEST_FOR_WORKING_CXX_COMPILER], |
+[ |
+ AC_CACHE_CHECK([whether $CXX builds executables that work], |
+ bison_cv_cxx_works, |
+ [AC_LANG_PUSH([C++]) |
+ bison_cv_cxx_works=no |
+ AC_COMPILE_IFELSE( |
+ [AC_LANG_PROGRAM( |
+ [#include <cstdlib> |
+ #include <iostream> |
+ #include <map> |
+ #include <string> |
+ using namespace std;], |
+ [std::cerr << ""; |
+ cout << ""; |
+ typedef std::pair<unsigned int, int> uipair; |
+ std::map<unsigned int, int> m; |
+ std::map<unsigned int, int>::iterator i; |
+ m.insert (uipair (4, -4)); |
+ for (i = m.begin (); i != m.end (); ++i) |
+ if (i->first != 4) |
+ return 1;])], |
+ [AS_IF([AC_TRY_COMMAND([$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_objext $LIBS >&AS_MESSAGE_LOG_FD])], |
+ [AS_IF([test "$cross_compiling" = yes], |
+ [bison_cv_cxx_works=cross], |
+ [AS_IF([AC_TRY_COMMAND(./conftest$ac_exeext)], |
+ [bison_cv_cxx_works=yes])])]) |
+ rm -f conftest$ac_exeext]) |
+ AC_LANG_POP([C++])]) |
+ |
+ case $bison_cv_cxx_works in |
+ yes) |
+ BISON_CXX_WORKS=':';; |
+ no | cross) |
+ BISON_CXX_WORKS='exit 77';; |
+ esac |
+ |
+ AC_SUBST([BISON_CXX_WORKS]) |
+ AM_CONDITIONAL(BISON_CXX_WORKS, test $bison_cv_cxx_works = yes) |
+]) |