Here is an update from a discussion I've had with a fellow boost user. The main problem appears to be the type traits classes which are there to check whether certain template types support certain language features. The bool inside the class indicates the types conformance/non- conformance to a certain test. The problem seems to be the fact that VC6/7 does not support static initializers within the class body. By changing the bool to just a simple declaration and moving the initialising outside the class body this language feature is no longer required. I know Microsoft are dragging their feet on standards conformance, but this feature is not strictly required for functionality reasons, so the library authors could have put in a work around. Can any of the library authors let me know of a suitable work around for this using their Macros/config options? I don't want to just hack my copy of the source unless I have too. Regards David Marsh -----Original Message----- From: Wayne Hartell [mailto:whar@haestad.com] Sent: 08 May 2002 17:15 To: David Marsh Subject: RE: [Boost-Users] Unable to compile Boost Graph (BGL) inVisual Studio 7 (.NET) Hi David, I didn't get that far into it, but I was testing with the code form Chapter 1.4 of the text (topological sort) and the edge connectivity code at Chapter 8.2. I actually re-wrote the code from Chapter 8.2, but you could simply include the pre-written edge connectivity header to save time ;) I got to the point where the code at CH1.4 would compile in Borland, VC6 and VC7, but the code in Chapter 8.2 won't compile with any compiler except GCC. The work around I got for the first C1001 is as follows. Even after using this work around (for VC7) I still run into another C1001 with VC7 on the Chapter 8.2 code. VC6 also generates a C1001 at a different location in the code. I really started to wonder what the value was of working through the compiler issues, when quite literally another issue ccould be lurking in the next unexpanded template! Hope this helps. I would love to hear if you get this working Ok. Kind Regards, Wayne Hartell ********************** The message for you follows ************************ I am Bobby Mattappally from Microsoft Developer Support. I have taken the onwership of you issue about getting C1001 when using the boost library. I am able to confirm this to be a bug with VC.Net C++ compiler. The error is happening the anonymous enum declaration in a template class in one of the boost library header files composite_traits.hpp line 158 below: BOOST_STATIC_CONSTANT(bool, value= ....) The workaround is to modify the is_array template class to use static const bool instead of the enum and defining it outside the class as below: //begin code template <typename T> struct is_array { private: static T t; public: #if _MSC_VER == 1300 static const bool value; #else BOOST_STATIC_CONSTANT(bool, value = (::boost::type_traits::ice_and< (1 == sizeof(detail::is_array_helper(&t, t))), ::boost::type_traits::ice_not< ::boost::detail::is_reference_or_const_volatile<T>::value> ::value, ::boost::type_traits::ice_not< (1 == sizeof(detail::is_function_tester(t)))>::value >::value)); #endif }; #if _MSC_VER == 1300 template <typename T> const bool is_array<T>::value = (::boost::type_traits::ice_and< (1 == sizeof(detail::is_array_helper(&t, t))), ::boost::type_traits::ice_not< ::boost::detail::is_reference_or_const_ volatile<T>::value>::value, ::boost::type_traits::ice_not< (1 == sizeof(detail::is_function_tester (t)))>::value >::value); #endif // end of code -----Original Message----- From: David Marsh [mailto:david.marsh10@ntlworld.com] Sent: Wednesday, May 08, 2002 11:38 AM To: Wayne Hartell Subject: RE: [Boost-Users] Unable to compile Boost Graph (BGL) inVisual Studio 7 (.NET) Wanye, Thanks for the info, I've only just started looking at boost, have 1.25, and 1.26 will get hold of 1.27 and try that also. Have no trouble building with VC6 as of yet but have only built a couple of examples as a test. My main problem is with VC7, could you give me some more information on what fix you obtained? I'd also be interested in finding out what else you tried. What were the subsequent errors? Thanks David Marsh -----Original Message----- From: Wayne Hartell [mailto:whar@haestad.com] Sent: 08 May 2002 16:10 To: david.marsh10@ntlworld.com Subject: RE: [Boost-Users] Unable to compile Boost Graph (BGL) inVisual Studio 7 (.NET) Hi, My recent experience trying to compile the BGL with VC6/VC7 has been pretty terrible. The VC compilers don't cope with templates too well and BGL is template city. I got a work around from Microsoft for the first C1001 (Internal Compiler Error) but when I hit the next two (one in VC6 and one in VC7) I threw in the towel. I also tried and had problems with Borland. I'd say if you can get away with GCC use that. I was able to successfully compile an exe in GCC, but ran into environment troubles when trying to link a DLL. I'd say the problem there was my lack of experience with GCC, but I think you'll have the best chance at success with GCC. Additionally, if you really need to use VC, but don't have much time to get things on the road I'd recommend you steer clear of BGL!!! BGL seems to be a very nice looking library (I bought the book too), but when the examples in the book don't even compile with 3 mainstream compilers I think it indicates that there's still a little way to go to get it to the stage where mere mortals like myself can get in and use it ;) Oh, one thing I didn't try was getting the latest code from CVS. I was working the whole time with 1_27_0, plus a few changes I made. Kind Regards, Wayne Hartell