1 /*============================================================================= 2 Copyright (c) 2001-2003 Joel de Guzman 3 http://spirit.sourceforge.net/ 4 5 Distributed under the Boost Software License, Version 1.0. (See accompanying 6 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 7 =============================================================================*/ 8 #if !defined(BOOST_SPIRIT_CONFIG_HPP) 9 #define BOOST_SPIRIT_CONFIG_HPP 10 11 #include <boost/config.hpp> 12 13 /////////////////////////////////////////////////////////////////////////////// 14 // 15 // Compiler check: 16 // 17 // Historically, Spirit supported a lot of compilers, including (to some 18 // extent) poorly conforming compilers such as VC6. Spirit v1.6.x will be 19 // the last release that will support older poorly conforming compilers. 20 // Starting from Spirit v1.8.0, ill conforming compilers will not be 21 // supported. If you are still using one of these older compilers, you can 22 // still use Spirit v1.6.x. 23 // 24 // The reason why Spirit v1.6.x worked on old non-conforming compilers is 25 // that the authors laboriously took the trouble of searching for 26 // workarounds to make these compilers happy. The process takes a lot of 27 // time and energy, especially when one encounters the dreaded ICE or 28 // "Internal Compiler Error". Sometimes searching for a single workaround 29 // takes days or even weeks. Sometimes, there are no known workarounds. This 30 // stifles progress a lot. And, as the library gets more progressive and 31 // takes on more advanced C++ techniques, the difficulty is escalated to 32 // even new heights. 33 // 34 // Spirit v1.6.x will still be supported. Maintenance and bug fixes will 35 // still be applied. There will still be active development for the back- 36 // porting of new features introduced in Spirit v1.8.0 (and Spirit 1.9.0) 37 // to lesser able compilers; hopefully, fueled by contributions from the 38 // community. For instance, there is already a working AST tree back-port 39 // for VC6 and VC7 by Peder Holt. 40 // 41 // If you got here somehow, your compiler is known to be poorly conforming 42 // WRT ANSI/ISO C++ standard. Library implementers get a bad reputation when 43 // someone attempts to compile the code on a non-conforming compiler. She'll 44 // be confronted with tons of compiler errors when she tries to compile the 45 // library. Such errors will somehow make less informed users conclude that 46 // the code is poorly written. It's better for the user to see a message 47 // "sorry, this code has not been ported to your compiler yet", than to see 48 // pages and pages of compiler error messages. 49 // 50 ///////////////////////////////////////////////////////////////////////////////// 51 #if (defined(BOOST_MSVC) && (BOOST_MSVC < 1310)) \ 52 || (defined(__BORLANDC__) && (__BORLANDC__ <= 0x570)) \ 53 || (defined(__GNUC__) && (__GNUC__ < 3)) \ 54 || (defined(__GNUC__) && (__GNUC__ == 3) && (__GNUC_MINOR__ < 1)) 55 # error "Compiler not supported. See note in <boost/spirit/core/config.hpp>" 56 #else 57 // Pass... Compiler supported. 58 #endif 59 60 #endif 61 62 63