Comments for tlensing.org blog http://blog.tlensing.org Technology and Digital Media Sun, 05 Feb 2012 10:59:23 +0000 http://wordpress.org/?v=2.6 Comment on Installing Mercurial on a Shared Web Server without Root Access (HostEurope) by danne34 http://blog.tlensing.org/2010/04/12/installing-mercurial-on-a-shared-web-server-without-root-access-hosteurope/#comment-11666 danne34 Sat, 04 Feb 2012 08:42:10 +0000 http://blog.tlensing.org/?p=165#comment-11666 Give it a chance, I realy like your way to post Give it a chance, I realy like your way to post

]]> Comment on A Delegate-like Observer Mechanism in Objective-C using Forward Invocation by bob http://blog.tlensing.org/2011/08/14/a-delegate-like-observer-mechanism-in-objective-c-using-forwardinvocation/#comment-11647 bob Thu, 02 Feb 2012 01:44:17 +0000 http://blog.tlensing.org/?p=306#comment-11647 This is not true: "it is likely to cause compiler warnings due to the fact that observers are of type id" The point of id is that it does not check whether a method is supported You might get a separate compiler warning that the selectors were not declared -- the compiler must know the signature of a selector in order to compile a call to it correctly. That's why you implemented a protocol -- simply to provide a declaration to the compiler. You do not actually need to implement this protocol. This is not true: “it is likely to cause compiler warnings due to the fact that observers are of type id”

The point of id is that it does not check whether a method is supported

You might get a separate compiler warning that the selectors were not declared — the compiler must know the signature of a selector in order to compile a call to it correctly. That’s why you implemented a protocol — simply to provide a declaration to the compiler. You do not actually need to implement this protocol.

]]> Comment on Embedding Python in a Cocoa Application by Ivan Vučica http://blog.tlensing.org/2008/11/04/embedding-python-in-a-cocoa-application/#comment-11565 Ivan Vučica Thu, 26 Jan 2012 11:37:42 +0000 http://blog.tlensing.org/?p=59#comment-11565 Excellent, excellent example! However, Py_SetProgramName() is used incorrectly; it should be the path to the executable of the running program, the value of argv[0] as passed to main(). Alternatively, you could hack it and pass /usr/bin/python. Passing "Python Console", however, doesn't seem like a good idea, judging by the documentation for this function (which claims Py_GetPath() and some other functions use this to find run-time libraries relative to the interpreter executable). ;) Excellent, excellent example!

However, Py_SetProgramName() is used incorrectly; it should be the path to the executable of the running program, the value of argv[0] as passed to main(). Alternatively, you could hack it and pass /usr/bin/python. Passing “Python Console”, however, doesn’t seem like a good idea, judging by the documentation for this function (which claims Py_GetPath() and some other functions use this to find run-time libraries relative to the interpreter executable).

;)

]]> Comment on Cocotron and Xcode4: How to Run Objective-C Apps on Linux by Martijn The http://blog.tlensing.org/2011/05/01/cocotron-and-xcode4-how-to-run-objective-c-apps-on-linux/#comment-11430 Martijn The Fri, 13 Jan 2012 17:17:40 +0000 http://blog.tlensing.org/?p=221#comment-11430 @andyvn22, I had the same problem as you had. First I thought it had something to do with binutils, so I changed the script to use a slightly newer version. Then I tried to use one of binutils' programs on the symlink that the error referred to: presto, apparently the binutils program(s) don't handle the symlink properly. So what I did in the end was, to make hard links instead of symlinks (e.g. using `ln libm-2.5.so libm.so`). Hope it helps! Martijn @andyvn22, I had the same problem as you had.

First I thought it had something to do with binutils, so I changed the script to use a slightly newer version. Then I tried to use one of binutils’ programs on the symlink that the error referred to: presto, apparently the binutils program(s) don’t handle the symlink properly.

So what I did in the end was, to make hard links instead of symlinks (e.g. using `ln libm-2.5.so libm.so`).

Hope it helps!
Martijn

]]> Comment on Installing Mercurial on a Shared Web Server without Root Access (HostEurope) by ac repair in verona http://blog.tlensing.org/2010/04/12/installing-mercurial-on-a-shared-web-server-without-root-access-hosteurope/#comment-11356 ac repair in verona Thu, 05 Jan 2012 07:07:49 +0000 http://blog.tlensing.org/?p=165#comment-11356 What is a blogging site that allows you to sync with facebook for comments? What is a blogging site that allows you to sync with facebook for comments?

]]> Comment on Creating XCode Projects for SWIG Python-bindings by Tobias http://blog.tlensing.org/2008/10/24/creating-xcode-projects-for-swig-python-bindings/#comment-11209 Tobias Fri, 16 Dec 2011 20:22:25 +0000 http://blog.tlensing.org/?p=27#comment-11209 Dear Dupront, you probably built the dynamic library with a different architecture than python is using on your system. Make sure both architectures match. You can find out which architecture your so is by doing file _interface.so on the command line. As you just got your Mac I assume you're running on OS X 10.7. On my system (10.7) Python runs in 32-bits mode by default. However, if you are using a different Python version, make sure it is built for the architecture you are planning to use. You should then configure your target in Xcode to match that architecture. See also: - http://stackoverflow.com/questions/3010443/python-libusb-pyusb-mach-o-but-wrong-architecture - http://stackoverflow.com/questions/2111283/how-to-build-64-bit-python-on-os-x-10-6-only-64-bit-no-universal-nonsense - http://stackoverflow.com/questions/2088569/how-do-i-force-python-to-be-32-bit-on-snow-leopard-and-other-32-bit-64-bit-quest Dear Dupront,

you probably built the dynamic library with a different architecture than python is using on your system. Make sure both architectures match. You can find out which architecture your so is by doing file _interface.so on the command line.

As you just got your Mac I assume you’re running on OS X 10.7. On my system (10.7) Python runs in 32-bits mode by default. However, if you are using a different Python version, make sure it is built for the architecture you are planning to use. You should then configure your target in Xcode to match that architecture.

See also:
- http://stackoverflow.com/questions/3010443/python-libusb-pyusb-mach-o-but-wrong-architecture
- http://stackoverflow.com/questions/2111283/how-to-build-64-bit-python-on-os-x-10-6-only-64-bit-no-universal-nonsense
- http://stackoverflow.com/questions/2088569/how-do-i-force-python-to-be-32-bit-on-snow-leopard-and-other-32-bit-64-bit-quest

]]> Comment on Creating XCode Projects for SWIG Python-bindings by Dupront http://blog.tlensing.org/2008/10/24/creating-xcode-projects-for-swig-python-bindings/#comment-11205 Dupront Fri, 16 Dec 2011 13:23:11 +0000 http://blog.tlensing.org/?p=27#comment-11205 Hello, I am new to swig and xcode. I just got an imac. I followed the instructions above to buid a _interface.so dynamic library. Everything goes fine with xcode. But when i run my python script, I got the message ImportError: dlopen (path_to_the_library/_interface.so): no suitable image found. Did find path_to_the_library/_interface.so: mach-o, but wrong architecture What should I do now ? Thank you for any help! Hello,
I am new to swig and xcode.
I just got an imac.

I followed the instructions above to
buid a _interface.so dynamic library.
Everything goes fine with xcode.
But when i run my python script, I got the message

ImportError: dlopen (path_to_the_library/_interface.so): no suitable image found. Did find
path_to_the_library/_interface.so: mach-o, but wrong architecture

What should I do now ?
Thank you for any help!

]]> Comment on Cocotron and Xcode4: How to Run Objective-C Apps on Linux by 山吹早月 http://blog.tlensing.org/2011/05/01/cocotron-and-xcode4-how-to-run-objective-c-apps-on-linux/#comment-10690 山吹早月 Wed, 02 Nov 2011 03:30:21 +0000 http://blog.tlensing.org/?p=221#comment-10690 MacOSXのインストールCDがない場合はどうしたらいいのでしょうか？ MacOSXのインストールCDがない場合はどうしたらいいのでしょうか？

]]> Comment on Cocotron and Xcode4: How to Run Objective-C Apps on Linux by andyvn22 http://blog.tlensing.org/2011/05/01/cocotron-and-xcode4-how-to-run-objective-c-apps-on-linux/#comment-10578 andyvn22 Fri, 21 Oct 2011 12:05:13 +0000 http://blog.tlensing.org/?p=221#comment-10578 Nice tutorial! Anyone know how to avoid the following during the CDT install? /Developer/Cocotron/1.0/Linux/i386/gcc-4.3.1/i386-ubuntu-linux/lib//libm.so: file not recognized: File format not recognized collect2: ld returned 1 exit status Nice tutorial! Anyone know how to avoid the following during the CDT install?

/Developer/Cocotron/1.0/Linux/i386/gcc-4.3.1/i386-ubuntu-linux/lib//libm.so: file not recognized: File format not recognized
collect2: ld returned 1 exit status

]]> Comment on Installing Mercurial on a Shared Web Server without Root Access (HostEurope) by Geier http://blog.tlensing.org/2010/04/12/installing-mercurial-on-a-shared-web-server-without-root-access-hosteurope/#comment-10392 Geier Sun, 25 Sep 2011 05:12:59 +0000 http://blog.tlensing.org/?p=165#comment-10392 Installing mercurial on a shared webhost without SSH access is also possible: All the SSH-commands posted by you can also be executed using php's shell_exec() function! Installing mercurial on a shared webhost without SSH access is also possible: All the SSH-commands posted by you can also be executed using php’s shell_exec() function!

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