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Hi,
I am trying to convert the Image-download-application from Cygwin env to MSVC env. But IT FAILED!
I had create the jtag_atlantic.lib & jtag_atlantic.exp file using the guide "Cygwin2MSVC_dll.txt". I manage to follow till the last part and get stucks while compiling the source code under MSVC.
The error message we get is
jtag_atlantic.exp : warning LNK4070: /OUT:jtag_atlantic.dll directive in .EXP differs from output filename '
D:\TESTUSBFINALDES1\test\Debug\test.exe'; ignoring directive
jtag_atlantic.exp : warning LNK4070: /OUT:jtag_atlantic.dll directive in .EXP differs from output filename '
D:\TESTUSBFINALDES1\test\Debug\test.exe'; ignoring directive
jtag_atlantic.exp : fatal error LNK1310: Exports not supported for pure MSIL image
I NEED BIG HELP to understanding what wrong with my code.
Attached is the MSVC code done by me.
Also, I am a programming NOOB. Please help.
This is an interesting project. Thanks you for your guide.
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cooi23,
I really cannot help you with a linker problem without sitting next to you to determine the issue. However, if you followed the instructions given in Cygwin2MSVC_dll.txt properly, you would have noted that these instructions are for console use only. You cannot execute them inside MSVC environment. IOW, you need to open a command window with a path to the files to execute the conversion properly. You should have no problems converting the Cygwin version of the jtag_atlantic.dll into a MSVC version if you follow these instructions exactly. The Cygwin project code will compile directly under the MSVC environment with the corrrect dll conversion without any modifications. I have verified this. I would start with a simpler project such as the test application to define the problem.
Regarding using the converted dll in a GUI...
dlls created with the MSVC lib.exe utility should be called exactly the same whether being called from a GUI application or a console application.
If you continue to have problems in this area, my suggestion is to look up the specific linker error codes that you are having on
www.msdn.com (
http://www.msdn.com) to determine what they are telling you.
However, my bet is that you did not follow the instructions in Cygwin2MSVC_dll.txt exactly, or you started with a corrupted dll. You should be able to find a clean Cygwin version of jtag_atlantic.dll at:
C:\altera\90(or whatever version you are using)\quartus\bin... I would copy this into a new folder by itself and using the command line, do the conversion as outlined in the instructions.
This needs to work first. BTW, do not rename the *.lib or *.exp file anything other than jtag_atlantic.lib or jtag_atlantic.exp. This is imperative. Also, when compiling your code, make the project a Win32 console application to start with. You should be able to directly import the Cygwin code (again, I would start with either the terminal app or the test app, small steps before we take big ones...) into the MSVC project. Also, make sure that the converted dll, exp, and lib files are in your project folder. Again, the instructions make this clear. You also need to tell MSVC that the lib file is a dependent. To do this, place the lib and header file under the "Resource Files" category. The only thing that I have under my "Header File" category is StdAfx.h...
Another tip that I just thought of...when you open a new Win32 console project, DO NOT SELECT BLANK PROJECT! This will not insert the required MS dependency files that you need to compile and link properly. Start out with a "Hello World" project and modify it by importing the project files into it and adding the lib and header files as prescribed. This should take care of your problem. This is a more of a MS issue than it is a dll issue.
rmatsick
Honored Contributor
