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  • Are Colocation Cross Connects Worth While

    - by SvrGuy
    We currently operate three clusters of collocated machines in different data centers. Recently, I became aware that our newest data center will offer to cross connect us to a bandwidth provider free of charge. In the past, I never really investigated a cross connect for bandwidth because I figured that the rates would be similar to what we are paying the colo now and that it would reduce our resiliency (because we would only be using one or two carriers for IP, where as the colo uses, say 8 different providers). Then I saw an ad for hurricane electric internet services (http://he.net/cgi-bin/ip_transit_quote) that gave a price for IP transit at $1/Mbs, which is much better than the $30/Mb we pay for the blended bandwidth. What are people out there typically paying for bandwith via cross connect and how hard is to setup? Is my understanding that what you do is open agreemetns with two or three ISPs, cross connect to them and then configure your top of rack router on their network. Can you really get IP transit down to a couple of dollars per megabit per month just by doing the routing yourself? Or, is my understanding of cross connection fundamentally wrong?

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  • Subversion 1.7 on 12.04 precise: libsasl error, compiling from source?

    - by Andrew Mao
    Background: I am a longtime Gentoo user, and this is my first time using Ubuntu (installed on a VM to avoid compiling everything from scratch). I am familiar with a Linux environment but somewhat unfamiliar with Ubuntu. I am trying to install Subversion 1.7 on Ubuntu and saw this post: Where can I find a Subversion 1.7 binary? The above post recommends using the PPA ppa:dominik-stadler/subversion-1.7. I also found the PPA ppa:svn/ppa from another link. They both cause problems for me. The issue is that any svn operation using the remote server causes the following error: svn: E170001: Unable to connect to a repository at URL 'svn+ssh://my_repo' svn: E170001: Could not create SASL context: generic failure: No such file or directory This seems to arise from a recent bug involving SVN dependency on the libsasl library, as documented by Debian users here: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=683555 and also Mac users here: https://trac.macports.org/ticket/34861 Resolution seems to involve either updating the cyrus-sasl or libsasl library to a newer version (neither of which is in the latest apt packages), or compiling subversion without SASL support. As a Gentoo user I started looking into how to compile svn from source, but it looks way more complicated on Ubuntu than I'm used to and I'm not sure what the canonical way is. My questions: Is there an obvious fix for this problem that I am overlooking? Is there a way to update the dependencies for SVN to something that works through using synaptic or apt-get? If I want to compile from scratch, how do I use the sources in the PPA instead of downloading my own source copy (i.e. the PPA has both binary and sources?)

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  • What are the packages/libraries I should install before compiling Python from source?

    - by Lennart Regebro
    Once in a while I need to install a new Ubuntu (I used it both for desktop and servers) and I always forget a couple of libraries I should have installed before compiling, meaning I have to recompile, and it's getting annoying. So now I want to make a complete list of all library packages to install before compiling Python (and preferably how optional they are). This is the list I compiled with below help and by digging in setup.py. It is complete for Ubuntu 10.04 and 11.04 at least: build-essential (obviously) libz-dev (also pretty common and essential) libreadline-dev (or the Python prompt is crap) libncursesw5-dev libssl-dev libgdbm-dev libsqlite3-dev libbz2-dev More optional: tk-dev libdb-dev Ubuntu has no packages for v1.8.5 of the Berkeley database, nor (for obvious reasons) the Sun audio hardware, so the bsddb185 and sunaudiodev modules will still not be built on Ubuntu, but all other modules are built with the above packages installed. Python 2.5 and Python 2.6 also needs to have LDFLAGS set on Ubuntu 11.04 and later, to handle the new multi-arch layout: export LDFLAGS="-L/usr/lib/$(dpkg-architecture -qDEB_HOST_MULTIARCH)" For Python 2.6 and 2.7 you also need to explicitly enable SSL after running the ./configure script and before running make. In Modules/Setup there are lines like this: #SSL=/usr/local/ssl #_ssl _ssl.c \ # -DUSE_SSL -I$(SSL)/include -I$(SSL)/include/openssl \ # -L$(SSL)/lib -lssl -lcrypto Uncomment these lines and change the SSL variable to /usr: SSL=/usr _ssl _ssl.c \ -DUSE_SSL -I$(SSL)/include -I$(SSL)/include/openssl \ -L$(SSL)/lib -lssl -lcrypto Python 2.6 also needs Modules/_ssl.c modified to be used with OpenSSL 1.0, which is used in Ubuntu 11.10. At around line 300 you'll find this: else if (proto_version == PY_SSL_VERSION_SSL3) self->ctx = SSL_CTX_new(SSLv3_method()); /* Set up context */ else if (proto_version == PY_SSL_VERSION_SSL2) self->ctx = SSL_CTX_new(SSLv2_method()); /* Set up context */ else if (proto_version == PY_SSL_VERSION_SSL23) self->ctx = SSL_CTX_new(SSLv23_method()); /* Set up context */ Change that into: else if (proto_version == PY_SSL_VERSION_SSL3) self->ctx = SSL_CTX_new(SSLv3_method()); /* Set up context */ #ifndef OPENSSL_NO_SSL2 else if (proto_version == PY_SSL_VERSION_SSL2) self->ctx = SSL_CTX_new(SSLv2_method()); /* Set up context */ #endif else if (proto_version == PY_SSL_VERSION_SSL23) self->ctx = SSL_CTX_new(SSLv23_method()); /* Set up context */ This disables SSL_v2 support, which apparently is gone in OpenSSL1.0.

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  • cross compilers

    - by Elad
    I've seen the about cross compilers reply at http://stackoverflow.com/questions/579695/how-do-i-cross-compile-c-code-on-windows-for-a-binary-to-also-be-run-on-unix-sol and i would like to know how can i compile for sparc on x86 machine? where can i find a good cross compiler? I also need for HP OS . if you link me to a good step by step tutorial It will be the best Thanks. Elad.

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  • Is there a trend for cross-platform GUI toolkits?

    - by Anto
    What is the trend like for the usage of cross-platform GUI frameworks right now? Are more people starting to use cross-platform frameworks (such as GTK+, Qt and wxWidgets) or are there more who use more platform-tied frameworks (e.g. Cocoa or WPF)? Is it more or less stagnant? Is it like a rollercoaster? What do you think the trend will be like, say, 5 years from now? The OS landscape is shifting with less people using Windows (personal observation). This should increase the demand for cross-platform toolkits, shouldn't it? Edit: Also, which (cross-platform) toolkits are growing the most, if so?

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  • Cross platform mobile development VS Native Mobile Development: Present And Future.

    - by MobileDev123
    I just completed one year in Smart phone development, working on BlackBerry and Android and also developed one application exclusively targeted to nokia feature phones. And just a month ago I come to know about Titanium Appcelerator tool that enables cross platform development, but there are some developers who complain about it's sub-par functionalities. Even a little bit experience of mine says that developing in native environment rather than these cross platform tools will give you more advantages by giving a developer a chance to add more features with better performance. Do you have same experience? Or you find such cross development tools really useful regarding to advance functionality and performance? As porting (or co developing) same application to different mobile platform is common thing nowadays, what do you think will these cross platform tools evolve and force developers to get a hands on approach on them or majority will stick to the native development environment?

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  • Compiling for older versions of Mac OS X

    - by Tristan
    I have recently started producing applications for the Mac, on my most recent release I got overwhelming suggestions to get the app working on OSX 10.5 as I'm working in and compiling for 10.6. I tried looking for the 10.5 SDK but couldn't find it anywhere to download! How can I go about compiling my app for older versions of Mac OS X using Xcode 2.2 and developing in 10.6? EDIT: ------ I will mention I don't have the to option to select different SDKs as I don't have any others installed and my problem is more not being able to find where to get those sdks from? then actually not know how to go about compiling for the older sdks

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  • Compiling on the desktop!! no?

    - by simon
    so I have compile my first program today, with the help of the "askubuntu's members"..... thanks so much!!! ;) this is what I have compiled : https://github.com/treeder/logitech_unifier But now, I have some question: 1- I have compiled my file on the desktop I have though it was easier first, but I never though it would create a file on my desktop...... so what do you guys do with the file created by the compilation? I don't think I need it anymore.... so do I delete it? or do I keep it? Is there a folder I should specificaly use for compiling? thanks for answering those newbies question.

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  • Compiling libevent on Windows server?

    - by RadiantHex
    Hi folks, it would be immensly helpful if someone could indicate me how to compile libevent http://monkey.org/~provos/libevent/ on Windows 7. I usually use compile source code on Linux distributions, as executable binaries are usually always available for Windows. Help would be great.

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  • cannot run c compiled programs. if you meant to cross compile use --host' Ubuntu

    - by Ali.A
    I'm completely new to Ubuntu I downloaded and unpacked a tar.gz package, after extraction, it is said in its documentation : "type ./configure --disable-gts" But when i run this command alone it tells me "Permission Denied" error. Then i tried to use "sh ./configure --disable-gts" insted, but this time i faced this error: configure: error: cannot run C compiled programs. If you meant to cross compile, use `--host'. How can i overcome these two problems? (I mean permission and compile error) I'm just a rookie and i need urgent help. Thanx

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  • Glitch-free cross-fades in HTML5

    - by Alexander Gladysh
    In my HTML5 canvas game, I need to cross-fade two sprites which have some glow around them. (Glow is backed into sprites.) Initially, the first sprite is visible. During the cross-fade the first sprite should vanish, and be replaced with the second one. How exactly the cross-fade is done — does not matter, as long as it is smooth and there are no visual glitches. I've tried two techniques: During the cross-fade I simultaneously interpolate alpha of the first sprite from 1.0 to 0.0, and alpha of the second sprite — from 0.0 to 1.0. With this technique I can see background in the middle of the cross-fade. That's because both sprites are semi-transparent most of the time. During the cross-fade I first interpolate alpha of the second sprite from 0.0 to 1.0 (first sprite alpha is at 1.0), and then interpolate alpha of the first sprite from 1.0 to 0.0. With this technique background is not seen, but the glow around sprites flashes during the cross-fide — when both sprites are near the full visibility. In non-HTML5 game I'd use shaders to do cross-fade separately in RGB and alpha channels. Is there a trick to do the cross-fade I need in HTML5 without visual glitches?

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  • BizTalk Cross Reference Data Management Strategy

    - by charlie.mott
    Article Source: http://geekswithblogs.net/charliemott This article describes an approach to the management of cross reference data for BizTalk.  Some articles about the BizTalk Cross Referencing features can be found here: http://home.comcast.net/~sdwoodgate/xrefseed.zip http://geekswithblogs.net/michaelstephenson/archive/2006/12/24/101995.aspx http://geekswithblogs.net/charliemott/archive/2009/04/20/value-vs.id-cross-referencing-in-biztalk.aspx Options Current options to managing this data include: Maintaining xml files in the format that can be used by the out-of-the-box BTSXRefImport.exe utility. Use of user interfaces that have been developed to manage this data: BizTalk Cross Referencing Tool XRef XML Creation Tool However, there are the following issues with the above options: The 'BizTalk Cross Referencing Tool' requires a separate database to manage.  The 'XRef XML Creation' tool has no means of persisting the data settings. The 'BizTalk Cross Referencing tool' generates integers in the common id field. I prefer to use a string (e.g. acme.country.uk). This is more readable. (see naming conventions below). Both UI tools continue to use BTSXRefImport.exe.  This utility replaces all xref data. This can be a problem in continuous integration environments that support multiple clients or BizTalk target instances.  If you upload the data for one client it would destroy the data for another client.  Yet in TFS where builds run concurrently, this would break unit tests. Alternative Approach In response to these issues, I instead use simple SQL scripts to directly populate the BizTalkMgmtDb xref tables combined with a data namepacing strategy to isolate client data. Naming Conventions All data keys use namespace prefixing.  The pattern will be <companyName>.<data Type>.  The naming conventions will be to use lower casing for all items.  The data must follow this pattern to isolate it from other company cross-reference data.  The table below shows some sample data. (Note: this data uses the 'ID' cross-reference tables.  the same principles apply for the 'value' cross-referencing tables). Table.Field Description Sample Data xref_AppType.appType Application Types acme.erp acme.portal acme.assetmanagement xref_AppInstance.appInstance Application Instances (each will have a corresponding application type). acme.dynamics.ax acme.dynamics.crm acme.sharepoint acme.maximo xref_IDXRef.idXRef Holds the cross reference data types. acme.taxcode acme.country xref_IDXRefData.CommonID Holds each cross reference type value used by the canonical schemas. acme.vatcode.exmpt acme.vatcode.std acme.country.usa acme.country.uk xref_IDXRefData.AppID This holds the value for each application instance and each xref type. GBP USD SQL Scripts The data to be stored in the BizTalkMgmtDb xref tables will be managed by SQL scripts stored in a database project in the visual studio solution. File(s) Description Build.cmd A sqlcmd script to deploy data by running the SQL scripts below.  (This can be run as part of the MSBuild process).   acme.purgexref.sql SQL script to clear acme.* data from the xref tables.  As such, this will not impact data for any other company. acme.applicationInstances.sql   SQL script to insert application type and application instance data.   acme.vatcode.sql acme.country.sql etc ...  There will be a separate SQL script to insert each cross-reference data type and application specific values for these types.

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  • error with "pmem.c" compiling linux source code for android

    - by Preetam
    I am compiling linux source code for android emulator. When i execute make command(for building and cross-compiling the linux source) i get the following error "pmem.c" file. root@ubuntu:~/common# make CHK include/linux/version.h CHK include/linux/utsrelease.h SYMLINK include/asm - include/asm-x86 CALL scripts/checksyscalls.sh CHK include/linux/compile.h CC drivers/misc/pmem.o drivers/misc/pmem.c:441: error: conflicting types for ‘phys_mem_access_prot’ /home/preetam/common/arch/x86/include/asm/pgtable.h:383: note: previous declaration of ‘phys_mem_access_prot’ was here drivers/misc/pmem.c: In function ‘flush_pmem_file’: drivers/misc/pmem.c:805: error: implicit declaration of function ‘dmac_flush_range’ drivers/misc/pmem.c: In function ‘pmem_setup’: drivers/misc/pmem.c:1265: error: implicit declaration of function ‘ioremap_cached’ drivers/misc/pmem.c:1266: warning: assignment makes pointer from integer without a cast make[2]: * [drivers/misc/pmem.o] Error 1 make[1]: [drivers/misc] Error 2 make: ** [drivers] Error 2 root@ubuntu:~/common# how to resolve this error. It seems that there may some problems in the "pmem.c" file and i'll have to choose different git repository. but that would be a very complex thing, as now i have already done most of the things till here. I might have to see correct version of this file. please someone tell what should i do? how to solve this errors. please help..thankyou!

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  • multiple compiling errors with basic C++ application on VS2010 Beta 1

    - by ratata
    I just recently installed VS2010 Beta 1 from the Microsoft website , I started a basic C++ Win32 Console Application , that generated the following code: #include "stdafx.h" int _tmain(int argc, _TCHAR* argv[]) { return 0; } I tried compiling the code just to see how it runs and just then I encountered several(over a 100) compiling errors. Here is the first part of the build output: 1>ClCompile: 1> stdafx.cpp 1>c:\program files\microsoft visual studio 10.0\vc\include\crtdefs.h(520): error C2065: '_In_opt_z_' : undeclared identifier 1>c:\program files\microsoft visual studio 10.0\vc\include\crtdefs.h(520): error C2143: syntax error : missing ')' before 'const' 1>c:\program files\microsoft visual studio 10.0\vc\include\crtdefs.h(520): warning C4229: anachronism used : modifiers on data are ignored 1>c:\program files\microsoft visual studio 10.0\vc\include\crtdefs.h(520): error C2182: '_invalid_parameter' : illegal use of type 'void' 1>c:\program files\microsoft visual studio 10.0\vc\include\crtdefs.h(520): error C2491: '_invalid_parameter' : definition of dllimport data not allowed 1>c:\program files\microsoft visual studio 10.0\vc\include\crtdefs.h(520): error C2059: syntax error : ')' 1>c:\program files\microsoft visual studio 10.0\vc\include\crtdefs.h(527): error C2065: '_In_opt_z_' : undeclared identifier 1>c:\program files\microsoft visual studio 10.0\vc\include\crtdefs.h(527): error C2143: syntax error : missing ')' before 'const' 1>c:\program files\microsoft visual studio 10.0\vc\include\crtdefs.h(527): warning C4229: anachronism used : modifiers on data are ignored pastebin for the full list I thought maybe the include files got mixed up by some other compiler version I have installed previously( I have VS 2008 as well) so I reinstalled VS2010 just to overwrite the headers but that didn't do much. Thanks in advance for any help you might offer as I am helpless

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  • Cross compiling unit tests with CppUnit or similar

    - by Mark
    Has anyone used a package like CppUnit to cross-compile C++ unit tests to run on an embedded platform? I'm using G++ on a Linux box to compile executables that must be run on a LynxOS board. I can't seem to get any of the common unit test packages to configure and build something that will create unit tests. I see a lot of unit test packages, CppUnit, UnitTest++, GTest, CppUTest, etc., but very little about using these packages in a cross-compiler scenario. The ones with a "configure" script imply that this is possible, but I can't seem to get them to configure and build.

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  • cross-compiling autoconf-based tools with mingw on Mac OS X

    - by paleozogt
    I'd like to cross-compile some open-source libraries (libiconv, gettext, glib2) for windows using mingw on Mac OS X. I've installed mingw on Mac with MacPorts. But now I'm not sure what to give to the configure script so that it will work. The cross-compilation tutorials I've seen all talk about makefiles, but no one mentions what to give autoconf-based projects. I'm configuring like this: ./configure --prefix=/opt/local/i386-mingw32 --host=i586-mingw32msvc but it doesn't seem to take. While the configure will pass, running "make" will give this error: i686-apple-darwin9-gcc-4.0.1: no input files I thought the "--host" argument to configure was supposed to tell it to use the mingw compiler? I'm not sure what's going on here.

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  • Compiling old versions of R (2.11 or older) on Ubuntu 13.10 (or newer)?

    - by user283293
    I am trying to compile an old version of R (2.11.1, specifically). "Why?", you might ask. Well, I have a program I am trying to run (that was not written by me, but I am hoping to use in my research) that was written in "old" R, and the program writer has specifically mentioned that R-2.11.1 or older must be used. I have run ./configure with no obvious errors (the entire output being far too long to post here, but I have been warned that I cannot make PDF, DVI, or HTML versions of the help pages, which I'm not too concerned about). Next, when I pass the make command, I am met with the following error (after a long stream of successful commands): Warning in solve.default(rgb): unable to load shared library '/home/sbowerma/Programs/R-2.11.1/modules//lapack.so': /home/sbowerma/Programs/R-2.11.1/lib/libRlapack.so: undefined symbol: _gfortran_compare_string Error in solve.default(rgb) : lapack routines cannot be loaded Error: unable to load R code in package 'grDevices' Execution halted However, I have confirmed that the library lapack.so is, in fact, in the exact position it is supposed to be.

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  • what do you do while code is compiling

    - by Jacob
    I'm looking for the best idea for what to do while code is compiling or tests are running. Typically around 5 minutes of thumb twiddling. Only so many cups of coffee can be made and drunk in a day, and I don't want to be seen always in the kitchen or bothering other people.

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  • portable cross-platform WebDAV Client

    - by theduke
    I am looking for a portable application that will allow me to do this: Browse a WebDAV share and open a file. Edit the file locally. Save the file, and automatically propagate the change to WebDAV. Is there any CROSS-PLATFORM application out there that will let me do this and exists as a portable? The reason I need this functionality is that I regularily have to access files via WebDAV from public machines where I do not have the neccessary permissions to natively mount a webdav share, or to install the neccessary components.

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  • Cross-Forest Trust

    - by cdalley
    I am looking at testing a cross-domain trust we can have two domain controllers (with different forests and domain names) setup so we can move everyone onto the new domain. We do NOT run exchange on site and we do not have any links to O365 to AD currently. Onto the problem: I have setup two DCs in a Virtual Machine: They are on the same network 192.168.0.* The Windows 2003 server: Name: OLDSRVR "Clone" of our current Domain Controller IP: 192.168.0.1 Domain: internal.test.com The Windows 2012 server: Name: ADCTEST01 Brand new domain setup from scratch separate to internal.test.com Domain: internal.test2.com IP: 192.168.0.2 OLDSRVR can only see ADCTEST if it has dynamic IP set. If I set a static IP it cannot see it. If I try using the dynamic IP and try to join it gets to the end then complains "??The trust relationship between this workstation and the primary domain failed" Any ideas?

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  • Compiling Qt for Windows 98

    - by wrp
    I need to support Windows 98. The Qt documentation claims this is possible, but there are no instructions. The distributed binaries don't run on Win98 and the majority of Qt applications I have sampled also don't. For several apps that do run on 98, I have asked authors how they did it, but the common answer is that it was accidental and they don't know what factors caused it. In searching the forums for help, I found only guesses that turned out to be wrong. For example, one belief is that to compile for Win9x, you must build the tools and the apps on that platform. Yet, things I found to run were built on newer versions of Windows. What is required to build the Qt dev tools and then applications for Win98? How about cross-compiling from WinXP or Linux? Are there specific components that can't be made to run on Win98? Are there particular difficulties with dynamic or static linking for Win98 support?

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