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I'm using Python 2.7 in Windows Powershell (I set the environment so I can use Python).

I have Cython installed (using the Windows installer).

I'm trying to follow the tutorial on the Cython website by making a simple "Hello World" extension, but when I try to build the extension I get this error:

dllwrap: gcc exited with status 1
error: command 'dllwrap' failed with exit status 1

How do I resolve this so that I may optimize my python code by C extensions?

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  • Is there any relevant error data above the gcc exited with status 1 line? The fact that it exited doesn't provide enough information. Commented Feb 3, 2013 at 3:24
  • Hello, here is the rest of the code: Commented Feb 3, 2013 at 20:48
  • Possible duplicate stackoverflow.com/q/5439160/1947535 Commented Feb 3, 2013 at 21:54

1 Answer 1

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Here is the rest of the error code:

Windows PowerShell
Copyright (C) 2009 Microsoft Corporation. All rights reserved.

PS C:\Users\Pinky> cd Programming
PS C:\Users\Pinky\Programming> python setup.py build_ext --inplace
running build_ext
skipping 'helloworld.c' Cython extension (up-to-date)
building 'helloworld' extension
C:\MinGW\bin\gcc.exe -mdll -O -Wall -IC:\Python27\include -IC:\Python27\PC -c helloworld.c -o build\temp.win32-2.7\Relea
se\helloworld.o
writing build\temp.win32-2.7\Release\helloworld.def
C:\MinGW\bin\dllwrap.exe -mdll -static --output-lib build\temp.win32-2.7\Release\libhelloworld.a --def build\temp.win32-
2.7\Release\helloworld.def -s build\temp.win32-2.7\Release\helloworld.o -LC:\Python27\libs -LC:\Python27\PCbuild -lpytho
n27 -lmsvcr90 -o C:\Users\Pinky\Programming\helloworld.pyd
helloworld.exp: file not recognized: File format not recognized
collect2: ld returned 1 exit status
dllwrap: gcc exited with status 1
error: command 'dllwrap' failed with exit status 1
PS C:\Users\Pinky\Programming>
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4 Comments

Setup.py is the file that is supposed to apply the C code (or something) and turn my python file into a Cython extension. It comes from this tutorial: docs.cython.org/src/userguide/tutorial.html
Its still not working. I put Ming/bin near the start of my environment path, deleted -mno-cygwin from the compiler.py.. It still gives me the error.
I managed to solve it. I forgot to put the "C:\" in the MingGW and also you need to type this into powershell to set its environment: $env:path = "C:\MinGW\bin;"+$env:path#
It would be worth editing your answer to include full details of how you solved your own issue. Glad to hear you got it sorted.

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