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

boost::shared_ptr and stl algorithms
by Bill Eidson 15 Apr '05

15 Apr '05

std::vector< boost::shared_ptr<T> > TVec; I want to write a function object to run std::for_each. to do somework against members of T and accumulate results in functor. My attempts have failed in VC7 with memory errors in my operator() method. struct fo { bool operator()( boost::shared_ptr<T>& t ) { return true; } }; Thanks in advance bille

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Will libraries built on WinNT run on Win98? (MinGW)
by Reed Hedges 31 Mar '05

31 Mar '05

I know that Win98 is not really supported, but is there any chance that libraries (specifically thread and regex) that were build on WinNT using MinGW work on Win98 (in MinGW)? My guess is no, but has anyone tried it? thanks reed

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Boost license and Open Source
by eze.boost.org.users＠secureit.mailshell.com 04 May '04

04 May '04

Hi. I'm thinking of starting an open source project, and I'm seriously considering using Boost. I've read many messages regarding the practical aspects of using boost with other projects (particularly open source). However, I have found nothing useful regarding the legal aspect of using Boost for an open source project. As I'm considering licensing my project under the GPL, I'm concerned about the GPL "friendlyness" towards Boost. Besides the technical aspect of it, what is the best way to structure the project, to license the project, etc. in order to satisfy GPL and Boost licenses? Any help would be much appreciated. Best regards, Ezequiel "This communication is intended solely for the addressee and is confidential and not for third party unauthorised distribution."

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Problem 2 with Boost 1.31.0 Regex for tru64cxx65
by Richard Hadsell 03 May '04

03 May '04

Having persuaded everything to compile in the 1.31.0 Regex library, it runs into another problem in building the .a archive libraries: tru64cxx65-Archive-action bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/libboost_regex-tru-1_31.a /bin/sh: /bin/ar: arg list too long rm -f bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/libboost_regex-tru-1_31.a ar r bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/libboost_regex-tru-1_31.a bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/c_regex_traits.o bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/c_regex_traits_common.o bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/cpp_regex_traits.o bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/cregex.o bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/fileiter.o bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/posix_api.o bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/regex.o bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/regex_debug.o bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/regex_synch.o bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/w32_regex_traits.o bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/wide_posix_api.o bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/instances.o bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/winstances.o "bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release"/cxx_repository/* ...failed tru64cxx65-Archive-action bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/libboost_regex-tru-1_31.a... The problem is due to the number of instantiations in the template repository and the lengths of their names. There are 492 instantiations, and many of them have 90-character file names, which looks like the compiler's maximum allowed. I solved the problem in previous versions of boost by breaking up the build into separate steps. This was the way I modified the make file: AR:= ar -cq IIDIR:= $(LIBDIR)/cxx_repository $(DIRNAME)/lib$(LIBNAME).a : $(ALL_O) @echo "*** creating lib$(LIBNAME).a" rm -f $@ $(AR) $@ $^ @echo "*** adding template instantiations" $(AR) $@ $(IIDIR)/[_A-Z]* $(AR) $@ $(IIDIR)/[a-z]* It builds the library from just the object files and then adds the instantiations in two steps. (Apparently, adding all of them exceeded the same shell arg list limit.) How can I do something equivalent with bjam to build the library? -- Dick Hadsell 914-259-6320 Fax: 914-259-6499 Reply-to: hadsell(a)blueskystudios.com Blue Sky Studios http://www.blueskystudios.com 44 South Broadway, White Plains, NY 10601

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Compiling BOOST_1_30_0 UNDER HPUX B.11.11
by Albert Gome 03 May '04

03 May '04

Hi, I am trying to Install BOOST_1_30_0 on HPUX B.11.11 using aCC Version HP ANSI C++ B3910B A.03.33. Fisrtly i tried to build the thread libaray under <BOOST_ROOT>/lib/thread/build using statement bjam -sTOOLS="acc" -sBuild="debug release" I tried thread first because the regex compilation was also giving problems. Though Compiling the threads library result in MkDir1 ../../../libs/thread/build/bin/libboost_thread.so/acc/debug/runtime-link-dynamic/shared-linkable-true/threading-multi aCC-C++-action ../../../libs/thread/build/bin/libboost_thread.so/acc/debug/runtime-link-dynamic/shared-linkable-true/threading-multi/condition.o Error 19: "/mnt/r7/apal3/lib/boost_1_30_0/boost/type_traits/is_function.hpp", line 59 # Unexpected 'template'. ::template result_<T> ^^^^^^^^ Error 24: "/mnt/r7/apal3/lib/boost_1_30_0/boost/type_traits/is_function.hpp", line 59 # '{' expected instead of '<'. ::template result_<T> ^ Error 20: "/mnt/r7/apal3/lib/boost_1_30_0/boost/type_traits/is_function.hpp", line 59 # '<' expected before '>'. ::template result_<T> ^ Error 24: "/mnt/r7/apal3/lib/boost_1_30_0/boost/type_traits/is_function.hpp", line 60 # ';' expected instead of '{'. { ^ Error 318: "/mnt/r7/apal3/lib/boost_1_30_0/boost/type_traits/is_function.hpp", line 59 # A template name was expected instead of 'T'. Did you forget to define the template? ::template result_<T> ^^ Error 263: "/mnt/r7/apal3/lib/boost_1_30_0/boost/type_traits/is_function.hpp", line 59 # Object expected in declaration list. ::template result_<T> ^^ Error 19: "/mnt/r7/apal3/lib/boost_1_30_0/boost/function/function_base.hpp", line 322 # Unexpected 'template'. struct enable_if : public enabled<Enabled>::template base<T> ^^^^^^^^ Error 24: "/mnt/r7/apal3/lib/boost_1_30_0/boost/function/function_base.hpp", line 322 # '{' expected instead of '<'. struct enable_if : public enabled<Enabled>::template base<T> ^ Error 20: "/mnt/r7/apal3/lib/boost_1_30_0/boost/function/function_base.hpp", line 322 # '<' expected before '>'. struct enable_if : public enabled<Enabled>::template base<T> ^ Error 24: "/mnt/r7/apal3/lib/boost_1_30_0/boost/function/function_base.hpp", line 323 # ';' expected instead of '{'. { ^ Error 419: "/mnt/r7/apal3/lib/boost_1_30_0/boost/function/function_base.hpp", line 322 # 'T' is used as a type, but has not been defined as a type. struct enable_if : public enabled<Enabled>::template base<T> ^ Error 318: "/mnt/r7/apal3/lib/boost_1_30_0/boost/function/function_base.hpp", line 322 # A template name was expected instead of '<type inserted by compiler>'. Did you forget to define the template? struct enable_if : public enabled<Enabled>::template base<T> ^ Error 699: "/mnt/r7/apal3/lib/boost_1_30_0/boost/function/function_base.hpp", line 322 # Error limit reached; halting compilation. struct enable_if : public enabled<Enabled>::template base<T> ^ aCC -AA -c +W823 -I/mnt/r7/apal3/lib/boost_1_30_0 -DBOOST_THREAD_BUILD_DLL=1 -mt -g +Z -I"../../../libs/thread/build" -I"/mnt/r7/apal3/lib/boost_1_30_0" -o "../../../libs/thread/build/bin/libboost_thread.so/acc/debug/runtime-link-dynamic/shared-linkable-true/threading-multi/condition.o" "../src/condition.cpp" ...failed aCC-C++-action ../../../libs/thread/build/bin/libboost_thread.so/acc/debug/runtime-link-dynamic/shared-linkable-true/threading-multi/condition.o... Then i downloaded the lates is_functions.hpp from the CVS which again resulted in aCC-C++-action ../../../libs/thread/build/bin/libboost_thread.so/acc/debug/runtime-link-dynamic/shared-linkable-true/threading-multi/condition.o Error 19: "/mnt/r7/apal3/lib/boost_1_30_0/boost/type_traits/is_function.hpp", line 59 # Unexpected 'template'. ::BOOST_NESTED_TEMPLATE result_<T> ^^^^^^^^^^^^^^^^^^^^^ Error 24: "/mnt/r7/apal3/lib/boost_1_30_0/boost/type_traits/is_function.hpp", line 59 # '{' expected instead of '<'. ::BOOST_NESTED_TEMPLATE result_<T> ^ Error 20: "/mnt/r7/apal3/lib/boost_1_30_0/boost/type_traits/is_function.hpp", line 59 # '<' expected before '>'. ::BOOST_NESTED_TEMPLATE result_<T> ^ Error 24: "/mnt/r7/apal3/lib/boost_1_30_0/boost/type_traits/is_function.hpp", line 60 # ';' expected instead of '{'. { ^ Error 318: "/mnt/r7/apal3/lib/boost_1_30_0/boost/type_traits/is_function.hpp", line 59 # A template name was expected instead of 'T'. Did you forget to define the template? ::BOOST_NESTED_TEMPLATE result_<T> ^^ Error 263: "/mnt/r7/apal3/lib/boost_1_30_0/boost/type_traits/is_function.hpp", line 59 # Object expected in declaration list. ::BOOST_NESTED_TEMPLATE result_<T> ^^ Error 19: "/mnt/r7/apal3/lib/boost_1_30_0/boost/function/function_base.hpp", line 322 # Unexpected 'template'. struct enable_if : public enabled<Enabled>::template base<T> ^^^^^^^^ Error 24: "/mnt/r7/apal3/lib/boost_1_30_0/boost/function/function_base.hpp", line 322 # '{' expected instead of '<'. struct enable_if : public enabled<Enabled>::template base<T> ^ Error 20: "/mnt/r7/apal3/lib/boost_1_30_0/boost/function/function_base.hpp", line 322 # '<' expected before '>'. struct enable_if : public enabled<Enabled>::template base<T> ^ Error 24: "/mnt/r7/apal3/lib/boost_1_30_0/boost/function/function_base.hpp", line 323 # ';' expected instead of '{'. { ^ Error 419: "/mnt/r7/apal3/lib/boost_1_30_0/boost/function/function_base.hpp", line 322 # 'T' is used as a type, but has not been defined as a type. struct enable_if : public enabled<Enabled>::template base<T> ^ Error 318: "/mnt/r7/apal3/lib/boost_1_30_0/boost/function/function_base.hpp", line 322 # A template name was expected instead of '<type inserted by compiler>'. Did you forget to define the template? struct enable_if : public enabled<Enabled>::template base<T> ^ Error 699: "/mnt/r7/apal3/lib/boost_1_30_0/boost/function/function_base.hpp", line 322 # Error limit reached; halting compilation. struct enable_if : public enabled<Enabled>::template base<T> ^ aCC -AA -c +W823 -I/mnt/r7/apal3/lib/boost_1_30_0 -DBOOST_THREAD_BUILD_DLL=1 -mt -g +Z -I"../../../libs/thread/build" -I"/mnt/r7/apal3/lib/boost_1_30_0" -o "../../../libs/thread/build/bin/libboost_thread.so/acc/debug/runtime-link-dynamic/shared-linkable-true/threading-multi/condition.o" "../src/condition.cpp" ...failed aCC-C++-action ../../../libs/thread/build/bin/libboost_thread.so/acc/debug/runtime-link-dynamic/shared-linkable-true/threading-multi/condition.o... which is agian the same later i also tried to run configure using export CXX="aCC" export CXXFLAGS="-Aa -DAportable -D__HPACC_THREAD_SAFE_RB_TREE -DRWSTD_MULTI_THREAD -DRW_MULTI_THREAD -D_REENTRANT -D_THREAD_SAFE" export LDFLAGS="-DAportable" export LIBS="-lpthread" ./configure and coping the user.hpp to right location still the same error presist. Is there any way out to compile this? what can be done to resolve it. I don't want to use GCC on HPUX. Rgds Albert --------------------------------- Do you Yahoo!? Win a $20,000 Career Makeover at Yahoo! HotJobs

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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

3 3

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; }

2 1

string/wstring conversion using lexical_cast
by Tony Djordjevski 30 Apr '04

30 Apr '04

Hi, I'm using Boost 1.31.0 with VC++ 7.1 and I'm having some problems converting std::string to std::wstring and back. Here's the code that I'm trying to get to compile: std::wstring x = boost::lexical_cast<std::wstring>( std::string("this doesn't work")); std::string y = boost::lexical_cast<std::string>( std::wstring(L"neither does this")); The error I get for string to wstring: lexical_cast.hpp(150): error C2679: binary '>>' : no operator found which takes a right-hand operand of type 'std::wstring' (or there is no acceptable conversion) And the errors I get for wstring to string: lexical_cast.hpp(144): error C2679: binary '<<' : no operator found which takes a right-hand operand of type 'const std::basic_string<_Elem,_Traits,_Ax>' (or there is no acceptable conversion) with [ _Elem=wchar_t, _Traits=std::char_traits<wchar_t>, _Ax=std::allocator<wchar_t> ] lexical_cast.hpp(144): error C2228: left of '.fail' must have class/struct/union type Any ideas of what I'm doing wrong? Best Regards, Tony Djordjevski

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RE: [Boost-users] Regex simple code can't compile on linux, but it can be built on windows VC6.
by Ben Hutchings 30 Apr '04

30 Apr '04

John Maddock <john(a)johnmaddock.co.uk> wrote: <snip> > The g++ linker is pretty brain-dead - the libraries have to appear > on the command line *after* the source files that use them. This is not brain-dead. It is useful to be able to control the order in which symbols are looked for since they may be defined in more than one library. It is a bit weird that -l is not placed before the file names as is the Unix convention for options, but it *isn't* an option - it is a shortcut for specifying a file in the library search path that follows the usual library name convention (lib<name>.a) and is exactly equivalent to specifying the full file name (AFAIK). Secondly, there is no g++ linker. g++ can use various Unix linkers though it is most commonly used together with the linker from GNU binutils. However, all Unix linkers should behave this way. Ben.

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