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I compile my program, but can't run the file built by the linker.

DOS doesn't know how to run unix-style COFF files which the GNU linker produces. That's what the extender is for. To run a COFF file called myprog, type 

  go32 myprog args...
Alternatively, you can produce an .exe file by running coff2exe: 
  coff2exe myprog
This appends a short real-mode stub to your program, which will call go32.exe automatically. Then you can run your program as any other DOS program.


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