# FTGL Seg Faults on Win32 **URL:** \ **Category:** Ruby\ **Created:** [May 11, 2006, 11:16am UTC](https://www.ruby-forum.com/t/ftgl-seg-faults-on-win32/60228 "2006-05-11T11:16:48Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![xavier](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/x/2bfe46/32.png) [@xavier](https://www.ruby-forum.com/u/xavier)\ **Post date:** [May 11, 2006, 11:16am UTC](https://www.ruby-forum.com/t/ftgl-seg-faults-on-win32/60228/1 "2006-05-11T11:16:48Z")
Hi, I’m trying to use FLGT ruby on Windows XP, but am running into a segmentation fault at ftgl\_test.rb:38 (The first call through to the FTGL library) I am installing as follows: 1. Ruby O. Click installer for windows 2. Install ruby-opengl-0.32g ruby extconf.rb nmake At this point the openGL samples work 3) Install FTGL ruby setup.rb config ruby setup.rb setup ruby setup.rb install 4) Try to run ftgl\_test.rb ruby tests/ftgl\_test.rb tests/ftgl\_test.rb:38: [BUG] Segmentation fault ruby 1.8.4 (2005-12-24) [i386-mswin32] This application has requested the Runtime to terminate it in an unusual way. Please contact the application’s support team for more information. I am at a loss as to how to go about debugging this problem. Any suggestions? I’ve got the linux build running on ubuntu with no problems. - Xavier OS: Win XP SP2, Fully patched Ruby: 1.8.4 (2005-12-24) [i386-mswin32] msvc: Visual Studio .NET 2003 ---
**Author:** ![xavier](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/x/2bfe46/32.png) [@xavier](https://www.ruby-forum.com/u/xavier)\ **Post date:** [May 11, 2006, 4:05pm UTC](https://www.ruby-forum.com/t/ftgl-seg-faults-on-win32/60228/2 "2006-05-11T16:05:04Z")
You could try using the FxRuby OpenGL bindings. ---
**Author:** ![xavier](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/x/2bfe46/32.png) [@xavier](https://www.ruby-forum.com/u/xavier)\ **Post date:** [May 11, 2006, 6:07pm UTC](https://www.ruby-forum.com/t/ftgl-seg-faults-on-win32/60228/3 "2006-05-11T18:07:15Z")
From: “Xavier” [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) > At this point the openGL samples work > 3) Install FTGL > ruby setup.rb config > ruby setup.rb setup > ruby setup.rb install > 4) Try to run ftgl\_test.rb > ruby tests/ftgl\_test.rb > > tests/ftgl\_test.rb:38: [BUG] Segmentation fault > ruby 1.8.4 (2005-12-24) [i386-mswin32] Hi, That’s strange. I’ll try to reproduce that problem here. However, I’ve compiled it pretty recently on XP with 1.8.4 and it’s been working for me. I’ve put the binaries online here: [http://tastyspleen.net/~billk/ftgl\_mswin32/](http://tastyspleen.net/~billk/ftgl_mswin32/) Do these binaries work for you? Or do you still get the crash? Thanks, Bill ---
**Author:** ![xavier](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/x/2bfe46/32.png) [@xavier](https://www.ruby-forum.com/u/xavier)\ **Post date:** [May 12, 2006, 1:49pm UTC](https://www.ruby-forum.com/t/ftgl-seg-faults-on-win32/60228/4 "2006-05-12T13:49:47Z")
From: “Xavier” [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) > > Do these binaries work for you? Or do you still get the > > crash? > > No, unfortunately ☹ I tried on two different machines, also. > I placed them in the following locations: > ruby\bin\libftgl.dll > ruby\lib\libftgl.lib (Is this even required?) libftgl.lib is not required, no. I just included it for completeness sake in case you needed to link with it at some point. > ruby\lib\ruby\1.8\i386-mswin32\ftgl.so > > I’m thinking I might try and write a test harness in C++, this would > give me more info to work with (if it crashed), yes? At the moment, I’ve > got no idea where the problem is. > > Also, FYI you can’t access .rb files stored on your server, but I > presume ftgl\_test.rb is the same as the one in the latest release. Oops! Yes, ftgl\_test.rb is the same as the released version, except I hacked the paths slightly so that it would load the .dll and .so files out of the current directory. E.g. ENV[‘PATH’] += “;.” $:.unshift “.” Well, this is peculiar. Why would it run fine on my system and crash on yours, when we appear to have the same versions of various software. Have you tried building FTGL itself from source? I’m wondering if it’s own C+±based demos would run on your system? Regards, Bill ---
**Author:** ![xavier](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/x/2bfe46/32.png) [@xavier](https://www.ruby-forum.com/u/xavier)\ **Post date:** [May 13, 2006, 3:29am UTC](https://www.ruby-forum.com/t/ftgl-seg-faults-on-win32/60228/5 "2006-05-13T03:29:16Z")
Bill K. wrote: > From: “Xavier” [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) > > > > Do these binaries work for you? Or do you still get the > > > crash? > > > > No, unfortunately ☹ I tried on two different machines, also. > > I placed them in the following locations: > > ruby\bin\libftgl.dll > > ruby\lib\libftgl.lib (Is this even required?) > > libftgl.lib is not required, no. I just included it for completeness > sake in case > you needed to link with it at some point. > > > ruby\lib\ruby\1.8\i386-mswin32\ftgl.so > > > > I’m thinking I might try and write a test harness in C++, this would > > give me more info to work with (if it crashed), yes? At the moment, I’ve > > got no idea where the problem is. > > > > Also, FYI you can’t access .rb files stored on your server, but I > > presume ftgl\_test.rb is the same as the one in the latest release. > > Oops! Yes, ftgl\_test.rb is the same as the released version, except > I hacked the paths slightly so that it would load the .dll and .so files > out of the current directory. E.g. > > ENV[‘PATH’] += “;.” > $:.unshift “.” > > Well, this is peculiar. Why would it run fine on my system and crash > on yours, when we appear to have the same versions of various > software. > > Have you tried building FTGL itself from source? I’m wondering if > it’s own C+±based demos would run on your system? In the process of getting the C++ FTGL demo to run, I noticed the default font is c:\winnt.… Not valid on my machine ☹ Changed it to a valid path and it works fine. Probably should throw an exception rather than segfault, but I’m not familiar enough with bindings to write a patch. If it’s a big deal to change, maybe mention it in the readme? Thanks, Xavier ---
**Author:** ![xavier](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/x/2bfe46/32.png) [@xavier](https://www.ruby-forum.com/u/xavier)\ **Post date:** [May 12, 2006, 8:41am UTC](https://www.ruby-forum.com/t/ftgl-seg-faults-on-win32/60228/6 "2006-05-12T08:41:57Z")
Oky wrote: > You could try using the FxRuby OpenGL bindings. I’m not sure these are what I’m after. I’m adding text support into my game rendering engine. Besides, FTGL is purdy. Bill K. wrote: > From: “Xavier” [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) > > > At this point the openGL samples work > > 3) Install FTGL > > ruby setup.rb config > > ruby setup.rb setup > > ruby setup.rb install > > 4) Try to run ftgl\_test.rb > > ruby tests/ftgl\_test.rb > > > > tests/ftgl\_test.rb:38: [BUG] Segmentation fault > > ruby 1.8.4 (2005-12-24) [i386-mswin32] > > Hi, > > That’s strange. I’ll try to reproduce that problem here. > However, I’ve compiled it pretty recently on XP with > 1.8.4 and it’s been working for me. I’ve put the binaries > online here: > > [Index of /~billk/ftgl\_mswin32](http://tastyspleen.net/~billk/ftgl_mswin32/) > > Do these binaries work for you? Or do you still get the > crash? > > Thanks, > > Bill No, unfortunately ☹ I tried on two different machines, also. I placed them in the following locations: ruby\bin\libftgl.dll ruby\lib\libftgl.lib (Is this even required?) ruby\lib\ruby\1.8\i386-mswin32\ftgl.so I’m thinking I might try and write a test harness in C++, this would give me more info to work with (if it crashed), yes? At the moment, I’ve got no idea where the problem is. Also, FYI you can’t access .rb files stored on your server, but I presume ftgl\_test.rb is the same as the one in the latest release. Thanks for you help, Xavier