From: "Guido van Rossum" <guido@python.org> > > What do you think is broken with the debug builds? > > I use it routinely and have no problems at all... > > I was repeating hearsay. The complaints I remember (mostly from c.l.p) are from people who want to build debug versions of extensions while at the same time refusing to build a debug version of Python from the sources. > > Here's what used to be broken on Unix: if you built a debug Python but > did not install it (assuming a non-debug Python was already > installed), and then used that debug Python to build a 3rd party > extension, the debug Python's configuration would be ignored, and the > extension would be built with the configuration of the installed > Python instead. Such extensions can't be linked with the debug > Python, which was the whole point of using the debug Python to build > in the first place. > > Jeremy recently fixed this for Unix, and I'm very happy. > > But I believe that on Windows you still have to add "--debug" to your > setup.py build command to get the same effect. I think that using the > debug executable should be sufficient to turn on the debug flags. > > More generally, I think that when you use a Python executable that > lives in a build directory, the configuration of that build directory > should be used for all extensions you build. This is what Jeremy did > in his fix. (As a side effect, building the Python extensions no > longer needs to be special-cased.) > I don't know anything about building Python (and extensions) on Unix, but here's how it works on windows: You can use the release as well as the debug version of Python to build release debug or release extensions with distutils. You have to use the --debug switch to specify which one to use. The debug version needs other libraries than the release version, they all have an _d inserted into the filename just before the filename- extension (but you probably know this already ;-). I don't know if it even is possible (in Python code) to determine whether the debug or the release exe is currently running. With changes I recently made to distutils, you can even do all this in a 'not installed' version, straight from CVS, for example. Thomas
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