May 2004 - Boost-users - lists.preview.boost.org

Problem building Boost 1.31.0 for VC6
by Estese 02 May '04

02 May '04

Hi, I'm trying to build the Boost 1.31.0 libraries for VC6 (on WinXP). My installation of MSVC is "C:\Program Files\Microsoft Visual Studio\VC98". All my user environment variables point to this location, as they should. I created the bjam executable, placed it in my Boost root (C:/boost_1_31_0), and then ran bjam with the following command: bjam "-sTools=msvc" However, it attempts to run the following command for every library: "CALL D:\Program Files\Microsoft Visual Studio .NET 2003\VC7\bin\cl" I don't even have .NET installed on my PC! Why would it be doing this? I tried explicitly telling bjam where vc6 is with the -sMSVC_ROOT argument, but it always outputs the same result. I've verified all my user environment variables, and they all point to C: and to VC6, as they should. I don't know why bjam insists on trying to build the boost libraries for Visual Studio .NET. Any thoughts? Sean Estey __________________________________ Do you Yahoo!? Win a $20,000 Career Makeover at Yahoo! HotJobs http://hotjobs.sweepstakes.yahoo.com/careermakeover

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serialization library
by Russell Balest 01 May '04

01 May '04

Robert, Thank you for writing the serialization library. I'm in awe that someone finally did this so well. I've been using it for 2 days and think it's fantastic. I've been mucking with serialization frameworks myself for 8 years; now this will trump all my efforts and I'll give up and switch. Many Thanks, Russell Balest

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RE: [Boost-users] Re: Config question:BOOST_NO_INTRINSIC_WCHAR_T(Intel7.1)
by Ben Hutchings 01 May '04

01 May '04

Christopher D. Russell <cdr(a)encapsule.com> wrote: > Thanks to Ben, Aleksey & John for the quick responses. > >And yes we know this is pain > Actually adding a command line switch, or punching the define into > user.hpp isn't all too bad in the grand scheme of things. > > Until Intel provides the cues required, may I suggest that a comment > be placed in boost/type_traits/is_integral.h at line 38: > > #ifndef BOOST_NO_INTRINSIC_WCHAR_T > // If the following line fails to compile and you're using the Intel > // compiler, see > // http://lists.boost.org/MailArchives/boost-users/msg06567.php <snip> It seems to me that it would be better still to put #ifdef BOOST_NO_INTRINSIC_WCHAR_T BOOST_STATIC_ASSERT(is_same<unsigned short, wchar_t>::value); #else BOOST_STATIC_ASSERT(!is_same<unsigned short, wchar_t>::value); #endif after the conditional definition of BOOST_NO_INTRINSIC_WCHAR_T to verify that the macro has been set/unset correctly. Ben.

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lexical_cast<string> of type char
by DY, JERRY U (SBCSI) 01 May '04

01 May '04

I'm converting our code to use lexical_cast for converting between our numeric types to string. It worked mostly but was surprised to see what looked like graphic characters on my screen. It turns out that when we wanted to display the ascii value of a character, lexical_cast<string> doesn't work -- it doesn't treat the char as a numeric, which when we really think about it, makes a lot of sense. Casting the char to int solves the problem. But I was just wondering how the experts would handle this. char c = 65; string s1 = lexical_cast<string>(c) // s1 = "A" string s2 = lexical_cast<string>((int)c) // s2 = "65" Thanks! -Jerry

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A BUG WITH THE BGL
by Hugues Joly 01 May '04

01 May '04

Hi, I have found a bug with the adjacency_list. It seems that there's a bug with the deletion of a vertex. See the attachment for a small program that triggers the problem. Thanks in advance. __________________________________________________________ Lèche-vitrine ou lèche-écran ? magasinage.yahoo.ca // test.cpp : Defines the entry point for the console application. // #include "stdafx.h" #include <boost/config.hpp> #include <iostream> #include <boost/graph/subgraph.hpp> #include <boost/graph/adjacency_list.hpp> #include <boost/graph/graph_utility.hpp> int _tmain(int argc, _TCHAR* argv[]) { using namespace boost; //typedef adjacency_list_traits<vecS, vecS, directedS> Traits;// Does nothing? typedef boost::property<boost::vertex_color_t, int, boost::property< boost::vertex_name_t, std::string > > VertexProperty; typedef adjacency_list<vecS, vecS, directedS, VertexProperty, property<edge_index_t, int> > Graph; Graph G0; Graph::vertex_descriptor v_descr[4]; Graph::edge_descriptor e_descr[4]; for (int i = 0; i < 4; i++) { v_descr[i] = boost::add_vertex(G0); } for (int i = 0; i < 4; i++) { boost::remove_vertex(v_descr[i], G0); } return 0; }

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