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[Proto] Splitting AST
by Joel Falcou 03 Mar '09

03 Mar '09

Let's say I want to take an expression involving operators +,-,*,/ and a function split. What I want to do is writing a transform taking such an expression and returning a fusion::vector or list (I guess) of expressions containing all sub-expressions of the original AST only separated on each insatcne of a split call. E.g : Xpr = a+b+split( c*d + split(e-f)); is turned into Xprs = [ a+b+placeholder<1>, c*d+placeholder<2>, e-f]; I guess I should use the State/Data parameters of the transform but i can't get the thing right. Any hints on how to tackle this without losing hairs ? -- ___________________________________________ Joel Falcou - Assistant Professor PARALL Team - LRI - Universite Paris Sud XI Tel : (+33)1 69 15 66 35

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using boost::filesystem::delete
by Sean Farrow 03 Mar '09

03 Mar '09

Hi: I have a boost::filesystem::wpath object. I need to firstly check if the file exists, and secondly delete and check the file has been deleted. How would I go about this? I've loked at the reference and carn't seem to make sense, are thee any examples of both these functions? Any help apreciated. Sean.

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Installing boost 1.38 in UBUNTU 8.10
by jan acosta 03 Mar '09

03 Mar '09

Hey guys, I am having trouble linking my boost libraries to a program I am trying to install. I need to install boost versions above 1.37 and ubuntu doesn't have packages yet for anything above 1.35. I am trying to install this program: http://webapp.dam.brown.edu/wiki/SciComp/InstallHedgeFromGit I followed the steps in his wiki but I always get this error message: g++ -pthread -shared -Wl,-Bsymbolic-functions build/temp.linux-x86_64-2.5/src/cpp/cuda.o build/temp.linux-x86_64-2.5/src/cpp/bitlog.o build/temp.linux-x86_64-2.5/src/wrapper/wrap_cudadrv.o build/temp.linux-x86_64-2.5/src/wrapper/mempool.o -L/home/supacreative/pool/include/lib -L/usr/local/cuda/lib -lboost_python-gcc41-mt -lcuda -o build/lib.linux-x86_64-2.5/pycuda/_driver.so /usr/bin/ld: cannot find -lboost_python-gcc41-mt collect2: ld returned 1 exit status error: command 'g++' failed with exit status 1 I can't get past this error. I've tried using the export command using: export LD_LIBRARY_PATH=/home/(my username)/pool/lib:$LD_LIBRARY_PATH and I still get the same error message. I even added the library folder into my ld.so.conf.d and ran ldconfig to restart ld, but I still get the same error. Please help. Jan

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Template method applied to template object
by Adrien Chauve 03 Mar '09

03 Mar '09

Hi all, The following lines don't compile with g++ (4.3.2) whereas it's ok with msvc 9. struct Foo { template<class T> unsigned int foo() const { return sizeof(T); } }; struct OtherFoo { template<class T> void f(const T& t) { t.foo<double>(); } }; int main() { Foo foo; OtherFoo other; other.f<Foo>(foo); return 0; } The ouput is : test.cpp: In member function ‘void OtherFoo::f(const T&)’: test.cpp:17: erreur: expected primary-expression before ‘double’ test.cpp:17: erreur: expected `;' before ‘double’ Does anybody know a workaround ? Thanks, Adrien

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Error when trying to build boost 1.38.0 with msvc 8.0
by LPE 03 Mar '09

03 Mar '09

I'm trying to build boost 1.38.0 on Windows, with MSVC 8.0 and bjam 3.1.17, and I get this error : D:\boost_1_38_0>bjam -q -j3 -d+2 --toolset=msvc --build-type=complete Skipping build of: ./headers <build>no in common properties Skipping build of: ./headers <build>no in common properties Skipping build of: ./headers <build>no in common properties Skipping build of: ./headers <build>no in common properties warning: Graph library does not contain optional GraphML reader. note: to enable GraphML support, set EXPAT_INCLUDE and EXPAT_LIBPATH to the note: directories containing the Expat headers and libraries, respectively. warning: skipping optional Message Passing Interface (MPI) library. note: to enable MPI support, add "using mpi ;" to user-config.jam. note: to suppress this message, pass "--without-mpi" to bjam. note: otherwise, you can safely ignore this message. Building Boost.Regex with the optional Unicode/ICU support disabled. Note: Please refer to the Boost.Regex documentation for more information Note: this is a strictly optional feature. Skipping build of: ./build_all <build>no in common properties Skipping build of: ./build_all <build>no in common properties Skipping build of: ./build_all <build>no in common properties Skipping build of: ./build_all <build>no in common properties common.mkdir bin.v2 if not exist "bin.v2\\" mkdir "bin.v2" 'C:\Documents' is not recognized as an internal or external command, operable program or batch file. ...skipped bin.v2\libs for lack of bin.v2... Thanks in advance.

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Re: [Boost-users] Installing boost 1.38 in UBUNTU 8.10 (Alain Leblanc)
by jan acosta 03 Mar '09

03 Mar '09

Did you verify that you have a file named boost_python-gcc41-mt.so or boost_python-gcc41-mt.a? Depending on the options you used when you installed boost they may have a different name, such as without the gcc42 or with an extra -1.38. Yes I verified that those are the names. My compiler version is gcc41. I had to downgrade from gcc42 to gcc41 because Cuda has problems running at higher versions of the compiler. To install hedge or pycuda, I only have to put boost_python-gcc41-mt in this file he wants us to make: The following text should be placed in $HOME/.aksetup-defaults.py: BOOST_INC_DIR = ['/users/sfield/pool/include/boost-1_38/'] BOOST_LIB_DIR = ['/users/sfield/pool/lib'] BOOST_BINDINGS_INC_DIR = ['/users/sfield/pool/include/boost-numeric-bindings/'] BOOST_PYTHON_LIBNAME = ['boost_python-gcc41-mt'] BOOST_MPI_LIBNAME = ['boost_mpi-gcc41-mt'] # WITH_SPARSE_WRAPPERS = True Should I try to change the name to boost_python-gcc41-mt.so or boost_python-gcc41.a? I have all of these files in my boost library folder. These are the things I need to get installed: http://webapp.dam.brown.edu/wiki/SciComp/InstallHedgeFromGit http://documen.tician.de/pycuda/ I'm stuck and don't know what else to do....

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Re: [Boost-users] Formal Review: Boost.RangeEx
by Alan M. Carroll 03 Mar '09

03 Mar '09

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RE [Q] any successes in building 1.38+GCC-4.3.2+cygwin
by Vial, Florent 03 Mar '09

03 Mar '09

>>> ./boost/config/requires_threads.hpp:29:4: error: #error "Threading >>> support unavaliable: it has been explicitly disabled with BOOST_DISABLE_THREADS" >> This may be an issue with 4.3.2 as it works fine with 3.4.4. >AFAIR, there is no pthreads in gcc-4 on cygwin. I agree with that. I tried it too for a couple of weeks, but the current gcc 4.3.2 version installed in cygwin was built without pthread. Try a "$gcc-4.exe --v". On my machine it returns: Using built-in specs. Target: i686-pc-cygwin Configured with: /gnu/gcc/release/gcc4-4.3.2-1/src/gcc-4.3.2/configure --srcdir=/gnu/gcc/release/gcc4-4.3.2-1/src/gcc-4.3.2 --prefix=/usr --exec-prefix=/us --bindir=/usr/bin --sbindir=/usr/sbin --libexecdir=/usr/sbin --localstatedir=/var --sysconfdir=/etc --datadir=/usr/share --infodir=/usr/share/info --mandi =/usr/share/man -v --with-gmp=/usr --with-mpfr=/usr --enable-bootstrap --enable-version-specific-runtime-libs --with-slibdir=/usr/bin --libexecdir=/usr/lib --enable-static --enable-shared --enable-shared-libgcc --enable-__cxa_atexit --with-gnu-ld --with-gnu-as --with-dwarf2 --disable-sjlj-exceptions --enable-l nguages=ada,c,c++,fortran,java,objc,obj-c++ --disable-symvers --enable-libjava --program-suffix=-4 Thread model: single gcc version 4.3.2 20080827 (alpha-testing) 1 (GCC) The line saying "Thread model: single" says it all... HTH, Florent Arnold & Richter Cine Technik GmbH & Co. Betriebs KG Sitz: Munchen - Registergericht: Amtsgericht Munchen - Handelsregisternummer: HRA 57918 Personlich haftender Gesellschafter: Arnold & Richter Cine Technik GmbH Sitz: Munchen - Registergericht: Amtsgericht Munchen - Handelsregisternummer: HRB 54477 Geschaftsfuhrer: Prof. Dr. Dejan Ilic; Franz Kraus; Jens Schafer

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problems with 32-bit Boost libs on Linux 64-bit with multilib gcc
by Damien Hocking 03 Mar '09

03 Mar '09

Hi all, I'm having some problems with building a 32-bit Boost on a 64-bit Linux. I'm building 1.38 and I need 64 and 32-bit version of the libraries. The compiler is gcc 4.3.2 with the multilibs installed (Ubuntu 8.10). My builds go through successfully, but when I link my 32-bit version of my application to what should be 32-bit Boost libraries, I get the "skipping incompatible" warning from the linker, which means that the address model is wrong. For example: /usr/bin/ld: skipping incompatible 3rdparty/boost/linux/x86/debug/libboost_serialization-gcc43-mt-d-1_38.so The 64-bit libraries are fine and the application links and runs correctly. I noticed in gcc.jam there's a comment about not being able to build a clean 32-bit binary with a 64-bit compiler. This is my bjam command for a 32-bit Boost build: bjam --build-dir=./build32 address-model=32 --build-type=complete --stagedir=./stage32 stage Do I need a -m32 in a config file or something extra on that command line? Damien

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Timing of BoostPro 1.38 Installer?
by Scott Meyers 03 Mar '09

03 Mar '09

Does anybody happen to know when an installer will be available for Boost 1.38? Thanks, Scott

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