# C-extension problem **URL:** \ **Category:** Ruby\ **Created:** [January 21, 2006, 9:24pm UTC](https://www.ruby-forum.com/t/c-extension-problem/63798 "2006-01-21T21:24:53Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![hotjuneshen](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/h/f19dbf/32.png) [@hotjuneshen](https://www.ruby-forum.com/u/hotjuneshen)\ **Post date:** [January 21, 2006, 9:24pm UTC](https://www.ruby-forum.com/t/c-extension-problem/63798/1 "2006-01-21T21:24:53Z")
Dear list. After reading through this walkthrough (1) of compiling c-extensions on Windows I was finally able to build the pickaxe example on two different PC’s. One with Visual Studio 2003, the other with Visual C++ express 2005. Both compiled, only one worked. This raises some issues. I) Should I try to fix this? I mean, will working with C-extensions bring me down the road of never-ending versioning/library/compiler/… problems. II) If yes, how to fix the technical issues at hand today? Any suggestions would be very welcome. Anyway, here’s what happened. Building on VS 2003 gave a working result at first try. C++ express 2005 however gave two distinct errors when running irb: require ‘Test’ GUI warning-box: ruby.exe - Unable to Locate Component This application has failed to start because MSVCR80.dll was not found. Re-installing the application may fix this problem. irb: Load error 126 … After searching from mscvr80.dll, finding it here(2) and copying it to c:\windows\system32 the following error appeared: irb: require ‘Test’ GUI warning-box Microsoft Visual C++ Runtime Library Rumtime Error! Program: c:\progra~1\ruby\bin\ruby.exe R6034 An application has made an attempt to load the C runtime library incorrectly Please contact the application’s support team for more information. irb: Load error 1114… All the best Jon Egil S. (1) [http://www.koontzfamily.org/david/blog/?p=230](http://www.koontzfamily.org/david/blog/?p=230) Note that I had to install Microsofts Platform SDK from MSDN seperately. (2) C:\WINDOWS\WinSxS\x86\_Microsoft.VC80.CRT\_1fc8b3b9a1e18e3b\_8.0.50727.42\_x-ww\_0de06acd ---
**Author:** ![hotjuneshen](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/h/f19dbf/32.png) [@hotjuneshen](https://www.ruby-forum.com/u/hotjuneshen)\ **Post date:** [January 21, 2006, 9:37pm UTC](https://www.ruby-forum.com/t/c-extension-problem/63798/2 "2006-01-21T21:37:20Z")
Hello, How did you compile the example in 2003? I am tring to do it with the makefile not a compiler. When I create a blank c++ console project for the code it gives me linking errors. Thank you for any help Becker ---
**Author:** ![hotjuneshen](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/h/f19dbf/32.png) [@hotjuneshen](https://www.ruby-forum.com/u/hotjuneshen)\ **Post date:** [January 21, 2006, 9:46pm UTC](https://www.ruby-forum.com/t/c-extension-problem/63798/3 "2006-01-21T21:46:42Z")
Becker Sorry about the lack of details. I also used the makefile approach. I used textpad, a simple text-editor, for writing the .c-code and then extconf.rb and nmake.exe from VS 2003.exe. The walkthrough in footnote (1) was very helpfull, although I must agree that this i cumbersome. Note that I had to install not only VS2003, but also the Platform SDK (for 2003-server, but works for my XP-sp2) to get it all going. ---
**Author:** ![hotjuneshen](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/h/f19dbf/32.png) [@hotjuneshen](https://www.ruby-forum.com/u/hotjuneshen)\ **Post date:** [January 21, 2006, 10:08pm UTC](https://www.ruby-forum.com/t/c-extension-problem/63798/4 "2006-01-21T22:08:54Z")
Becker > Sorry to bug you for more details. How do you run nmake.exe from 2003? No problem. Actually I don’t run it from within 2003, I open a command-window, cd to the right directory and just run nmake. You should really read this: [http://www.koontzfamily.org/david/blog/?p=230](http://www.koontzfamily.org/david/blog/?p=230) All the best JE ---
**Author:** ![hotjuneshen](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/h/f19dbf/32.png) [@hotjuneshen](https://www.ruby-forum.com/u/hotjuneshen)\ **Post date:** [January 21, 2006, 11:02pm UTC](https://www.ruby-forum.com/t/c-extension-problem/63798/5 "2006-01-21T23:02:45Z")
hello A few more questions, Where was your source file? I used the one click installer and i do not see the scr folder. I downloaded the tar source from the ruby website and i am using that. Nmake. When i type it in the command line it does not recognize it. I set up the variables for the system like the website said to. If I use the nmake in the VC7\bin i get the cl is not recognized The echo shows what should be there and extconf.rb does what is should. Its the damn Nmake! Becker ---
**Author:** ![hotjuneshen](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/h/f19dbf/32.png) [@hotjuneshen](https://www.ruby-forum.com/u/hotjuneshen)\ **Post date:** [January 21, 2006, 10:02pm UTC](https://www.ruby-forum.com/t/c-extension-problem/63798/6 "2006-01-21T22:02:29Z")
Sorry to bug you for more details. How do you run nmake.exe from 2003? Becker ---
**Author:** ![hotjuneshen](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/h/f19dbf/32.png) [@hotjuneshen](https://www.ruby-forum.com/u/hotjuneshen)\ **Post date:** [January 22, 2006, 12:10am UTC](https://www.ruby-forum.com/t/c-extension-problem/63798/7 "2006-01-22T00:10:53Z")
On 21/01/06, Jon Egil S. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > After reading through this walkthrough (1) of compiling c-extensions on > Windows I was finally able to build the pickaxe example on two different > PC’s. One with Visual Studio 2003, the other with Visual C++ express 2005. > Both compiled, only one worked. This raises some issues. Avoid compiling with Visual C++ 2005 for now. There are some … changes that Microsoft has made. I am working on compiling with Visual C++ 2005 and have a couple of patches to finish trying from Nobu that may help alleviate this situation. -austin ---
**Author:** ![hotjuneshen](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/h/f19dbf/32.png) [@hotjuneshen](https://www.ruby-forum.com/u/hotjuneshen)\ **Post date:** [January 22, 2006, 11:46pm UTC](https://www.ruby-forum.com/t/c-extension-problem/63798/8 "2006-01-22T23:46:31Z")
I get this error when tring nmake. cl -nologo -LD -FeTest.so TcTest.obj Test.obj msvcrt-ruby18.lib oldname s.lib user32.lib advapi32.lib wsock32.lib -link -incremental:no -debug -opt:ref -opt:icf -dll -libpath:“c:/ruby/lib” -def:Test-i386-mswin32.def cl : Command line warning D4024 : unrecognized source file type ‘.’, object file assumed LINK : fatal error LNK1104: cannot open file ‘.’ NMAKE : fatal error U1077: ‘F:\WINDOWS\system32\cmd.exe’ : return code ‘0x2’ Stop. I dont see where in the make file that line is. also where in that line there just just a dot? Becker ---
**Author:** ![hotjuneshen](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/h/f19dbf/32.png) [@hotjuneshen](https://www.ruby-forum.com/u/hotjuneshen)\ **Post date:** [January 23, 2006, 12:31am UTC](https://www.ruby-forum.com/t/c-extension-problem/63798/9 "2006-01-23T00:31:57Z")
On 22/01/06, ruby talk [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > NMAKE : fatal error U1077: ‘F:\WINDOWS\system32\cmd.exe’ : return code ‘0x2’ > Stop. > > I dont see where in the make file that line is. also where in that > line there just just a dot? Again, if you’re trying this with Visual Studio 2005, please hold off. I am preparing a comprehensive set of instructions. -austin