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[GIL] Loading flipped image
by Szymon Gatner 15 Jul '11

15 Jul '11

Hi, Is it possible to flip image while it is being loaded? Png images are loaded upside-down and I currently I use copy_pixels() on flipped_up_down_view() of original image but I really wish I could avoid that step. Cheers, Szymon

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Fwd: building cufflinks has compiler error related to boost
by Michael Gooch 15 Jul '11

15 Jul '11

The following error is happening when I try to build cufflinks. I am on Red Hat Enterprise Linux 6.1 and I have installed every boost package available from the RHN repositories. (I would install directly from boost but RHN support is usually anal about using stuff from source when its available from them.) Cufflinks says it uses boost 1.38, and the package version is 1.41, so the version should be adequate. I'm somewhat lost now. This occurred after I noticed some of the pre-bulit binaries had issues with red-hat's version of the z-lib library, so I was trying to see if building the package would interface properly with the included z-lib from redhat, but then I ran into this boost problem. the error: cufflinks.o:(.rodata._ZTIN5boost6detail11thread_dataINS_3_bi6bind_tIvPFvRK16RefSequenceTableP9HitBundleP11BiasLearnereP8_IO_FILESC_SC_ENS2_5list7INS_17reference_wrapperIS5_EENS2_5valueIS8_EENSI_ISA_EENSI_IeEENSI_ISC_EESM_SM_EEEEEE[typeinfo for boost::detail::thread_data<boost::_bi::bind_t<void, void (*)(RefSequenceTable const&, HitBundle*, BiasLearner*, long double, _IO_FILE*, _IO_FILE*, _IO_FILE*), boost::_bi::list7<boost::reference_wrapper<RefSequenceTable const>, boost::_bi::value<HitBundle*>, boost::_bi::value<BiasLearner*>, boost::_bi::value<long double>, boost::_bi::value<_IO_FILE*>, boost::_bi::value<_IO_FILE*>, boost::_bi::value<_IO_FILE*> > > >]+0x10): undefined reference to `typeinfo for boost::detail::thread_data_base' libcufflinks.a(common.o): In function `boost::thread_specific_ptr<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >::~thread_specific_ptr()': common.cpp:(.text._ZN5boost19thread_specific_ptrISsED2Ev[_ZN5boost19thread_specific_ptrISsED5Ev]+0x35): undefined reference to `boost::detail::set_tss_data(void const*, boost::shared_ptr<boost::detail::tss_cleanup_function>, void*, bool)' libcufflinks.a(assemble.o): In function `boost::thread_specific_ptr<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >::get() const': /usr/include/boost/thread/tss.hpp:82: undefined reference to `boost::detail::get_tss_data(void const*)' /usr/include/boost/thread/tss.hpp:82: undefined reference to `boost::detail::get_tss_data(void const*)' /usr/include/boost/thread/tss.hpp:82: undefined reference to `boost::detail::get_tss_data(void const*)' /usr/include/boost/thread/tss.hpp:82: undefined reference to `boost::detail::get_tss_data(void const*)' /usr/include/boost/thread/tss.hpp:82: undefined reference to `boost::detail::get_tss_data(void const*)' libcufflinks.a(assemble.o):/usr/include/boost/thread/tss.hpp:82: more undefined references to `boost::detail::get_tss_data(void const*)' follow collect2: ld returned 1 exit status make[2]: *** [cufflinks] Error 1 M.Gooch

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[regex] Segmentation fault on regex_search only on CentOS
by Narinder Claire 15 Jul '11

15 Jul '11

Hi I'll illustrate the problem I have seen in the past with an example. It may or may not be directly or indirectly linked with the seg fault issue you are seeing. Although mine is not a seg fault, it does demonstrate very different behaviour between gcc on Centos (4.1.2) and gcc on Ubuntu (4.5.2) Consider the following 3 source files: main.cpp -> ---------------------------------- #include<iostream> #include"my_exception.h" using namespace std; void foo(); int main() { try { foo(); } catch(const my_exception &err) { cout << err.what(); } //catch(const exception &err) //{ //cout << "OOPs unknown error "; //} cout <<"\n"; } ---------------------------------- dll.cpp -> ---------------------------------- #include"my_exception.h" void __attribute__ ((visibility("default"))) foo() { throw my_exception(); } ---------------------------------- my_exception.h -> ---------------------------------- #include<exception> class my_exception: public std::exception { public: virtual const char* what() const throw() { return "my_exception"; } my_exception()throw(){} virtual ~my_exception()throw(){} }; ---------------------------------- and the following makefile makefile -> ---------------------------------- CXX=g++ all: $(CXX) dll.cpp -fvisibility=hidden -fPIC -shared -o libdll.so $(CXX) main.cpp -fPIC -L./ -ldll -o main clean: rm -fr lib*.so main ---------------------------------- Compiled on Centos 5.6 with gcc with the following specs: Using built-in specs. Target: x86_64-redhat-linux Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-libgcj-multifile --enable-languages=c,c++,objc,obj-c++,java,fortran,ada --enable-java-awt=gtk --disable-dssi --disable-plugin --with-java-home=/usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/jre --with-cpu=generic --host=x86_64-redhat-linux Thread model: posix gcc version 4.1.2 20080704 (Red Hat 4.1.2-50) The output is : terminate called after throwing an instance of 'my_exception' what(): my_exception Aborted However compiled with gcc on Ubuntu 11.04 with specs: Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro 4.5.2-8ubuntu4' --with-bugurl=file:///usr/share/doc/gcc-4.5/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.5 --enable-shared --enable-multiarch --with-multiarch-defaults=x86_64-linux-gnu --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib/x86_64-linux-gnu --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.5 --libdir=/usr/lib/x86_64-linux-gnu --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-plugin --enable-gold --enable-ld=default --with-plugin-ld=ld.gold --enable-objc-gc --disable-werror --with-arch-32=i686 --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu Thread model: posix gcc version 4.5.2 (Ubuntu/Linaro 4.5.2-8ubuntu4) The output is : my_exception If I execute the Ubuntu compiled binary on Centos I still get the same 'Aborted' output. If I execute the Centos compiled binary on Ubuntu I get the expected output of the string 'my_exception' This suggests that the 'difference' is not coming from the compiler but from the runtime. As stated before this may not be related to your seg fault issue but the authors of regex could most likely tell straight away. Best Wishes N

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boost::mpl and VS 2005
by Narinder Claire 15 Jul '11

15 Jul '11

Hello, Can someone say whether it's likely to be a bug in VS2005 or if it's an oversight in MPL ? I would guess it's a bug in VS2005 and would be interested to know whether there's a workaround in Boost. Best N

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Trying to install 1.47 on Snow Leopard using clang toolset gives error "missing argument parent-requirements"
by doug livesey 14 Jul '11

14 Jul '11

Hi -- I'm trying to install boost 1.47.0 on my Snow Leopard machine, using clang, but I can't seem even to build the b2 tool. The error I get is "missing argument parent-requirements". The full output is here: https://gist.github.com/1081527 If anyone could offer me any advice, I'd be very grateful -- I'm dying to play with Phoenix! :) Cheers, Doug.

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strong_typedef
by Dmitry Vinogradov 14 Jul '11

14 Jul '11

Hi everyone. Is <boost/strong_typedef.hpp> obsolete? Compiling this code: // -- cut --- #include <boost/strong_typedef.hpp> #include <boost/archive/binary_oarchive.hpp> // -- cut --- gives: 1>E:\Libraries\boost\boost/serialization/strong_typedef.hpp(45): warning C4005: 'BOOST_STRONG_TYPEDEF' : macro redefinition 1> E:\Libraries\boost\boost/strong_typedef.hpp(45) : see previous definition of 'BOOST_STRONG_TYPEDEF' Does one need to use <boost/serialization/strong_typedef.hpp> instead?

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Serialization building on VS2010
by Zoltán Lengyel 14 Jul '11

14 Jul '11

Hello, I am having a LINK error when I try to include stuff for serialization: * #include <boost/archive/text_oarchive.hpp> #include <boost/archive/text_iarchive.hpp> 1>LINK : fatal error LNK1104: cannot open file 'libboost_serialization-vc100-mt-gd-1_46_1.lib' *So I am trying to build this, with the libs/serialization/vc7ide/BoostSerializationLibrary.sln using Microsoft Visual Studio 2010 Express on Windows 7 (64 bit). Building the solution finished with: *========== Build: 2 succeeded, 88 failed, 0 up-to-date, 0 skipped ==========* With a lot of: * 90>LINK : fatal error LNK1104: cannot open file 'boost_filesystem-vc100-mt-gd-1_46_1.lib'* So I tried next the libs/filesystem/v3/test/msvc10/filesystem-v3.sln. Building the solution finished with 3 failed, but it was because it didn't find some of the tutorial projects, so leaving those out from the build made: *========== Build: 10 succeeded, 0 failed, 0 up-to-date, 0 skipped ==========* But this doesn't seem to give me *boost_filesystem-vc100-mt-gd-1_46_1.lib *anywhere, so all the problems above remain. What am I doing wrong?

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[random] Cauchy distribution
by Karsten Ahnert 14 Jul '11

14 Jul '11

Hi, I have the following code boost::mt19937 rng; boost::cauchy_distribution< double > cauchy( 0.0 , 0.1 ); for( size_t i=0 ; i<16 ; ++i ) { std::cout << cauchy( rng ) << " "; } which produced this sequence : 76513.4 4.3467e+06 -254805 -1.63299e+06 -6.96405e+06 233243 214884 883827 471904 268253 648798 140314 1.43562e+06 653319 -582905 91567.6 I think these number are much to high. The standard deviation should be 0.1. Does anyone knows what went wrong? Is this my failure? I use boost 1.46 and gcc 4.5.2.

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parsing query
by Sean Farrow 14 Jul '11

14 Jul '11

Hi: I'm working on a project and have a file with lines of the following form: :function AddBrailleColors :Synopsis Provides a method for the user to assign custom colors to be marked in Braille. :Description Brings up a dialog for the user to assign the colors on the screen to Braille marking. :Param String/strForeground Enter the variable containing the RGB string for the foreground color. :Param String/strBackground Enter the RGB string for the background color. :Param String/sApp Enter the value for the app file name to be used. :Category Colors What boost library do people feel is the best one to use to parse this form of input, boost.Regex, boost.proto or boost.spirit? And given the input, what would be the best way of going about doing this? I need the function, Synopsis, Description, and then the parameters ideally placed in separate variables. Any help appreciated. Cheers Sean.

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[1.47.0] Release notice
by Beman Dawes 14 Jul '11

14 Jul '11

Release 1.47.0 of the Boost C++ Libraries is now available. These open-source libraries work well with the C++ Standard Library, and are usable across a broad spectrum of applications. The Boost license encourages both commercial and non-commercial use. This release contains four new libraries (Chrono, Geometry, Phoenix, Ratio) and numerous enhancements and bug fixes for existing libraries. For details, including download links, see http://www.boost.org/users/news/version_1_47_0 The release can also be downloaded directly from SourceForge. See http://sourceforge.net/projects/boost/files/ To install this release on your system, see http://www.boost.org/doc/libs/release/more/getting_started/index.html Thanks, --The Boost release team Beman Dawes Daniel James Eric Niebler Rene Rivera Vladimir Prus

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