Mailman 3 November 2002 - Distutils-SIG

Sample setup.py for Numeric Python
by Greg Ward 29 Apr '18

29 Apr '18

Hi again -- [cc'd to Paul Dubois: you said you weren't following the distutils sig anymore, but this directly concerns NumPy and I'd like to get your input!] here's that sample setup.py for NumPy. See below for discussion (and questions!). ------------------------------------------------------------------------ #!/usr/bin/env python # Setup script example for building the Numeric extension to Python. # This does sucessfully compile all the .dlls. Nothing happens # with the .py files currently. # Move this file to the Numerical directory of the LLNL numpy # distribution and run as: # python numpysetup.py --verbose build_ext # # created 1999/08 Perry Stoll __rcsid__ = "$Id: numpysetup.py,v 1.1 1999/09/12 20:42:48 gward Exp $" from distutils.core import setup setup (name = "numerical", version = "0.01", description = "Numerical Extension to Python", url = "http://www.python.org/sigs/matrix-sig/", ext_modules = [ ( '_numpy', { 'sources' : [ 'Src/_numpymodule.c', 'Src/arrayobject.c', 'Src/ufuncobject.c' ], 'include_dirs' : ['./Include'], 'def_file' : 'Src/numpy.def' } ), ( 'multiarray', { 'sources' : ['Src/multiarraymodule.c'], 'include_dirs' : ['./Include'], 'def_file': 'Src/multiarray.def' } ), ( 'umath', { 'sources': ['Src/umathmodule.c'], 'include_dirs' : ['./Include'], 'def_file' : 'Src/umath.def' } ), ( 'fftpack', { 'sources': ['Src/fftpackmodule.c', 'Src/fftpack.c'], 'include_dirs' : ['./Include'], 'def_file' : 'Src/fftpack.def' } ), ( 'lapack_lite', { 'sources' : [ 'Src/lapack_litemodule.c', 'Src/dlapack_lite.c', 'Src/zlapack_lite.c', 'Src/blas_lite.c', 'Src/f2c_lite.c' ], 'include_dirs' : ['./Include'], 'def_file' : 'Src/lapack_lite.def' } ), ( 'ranlib', { 'sources': ['Src/ranlibmodule.c', 'Src/ranlib.c', 'Src/com.c', 'Src/linpack.c', ], 'include_dirs' : ['./Include'], 'def_file' : 'Src/ranlib.def' } ), ] ) ------------------------------------------------------------------------ First, what d'you think? Too clunky and verbose? Too much information for each extension? I kind of think so, but I'm not sure how to reduce it elegantly. Right now, the internal data structures needed to compile a module are pretty obviously exposed: is this a good thing? Or should there be some more compact form for setup.py that will be expanded later into the full glory we see above? I've already made one small step towards reducing the amount of cruft by factoring 'include_dirs' out and supplying it directly as a parameter to 'setup()'. (But that needs code not in the CVS archive yet, so I've left the sample setup.py the same for now.) The next thing I'd like to do is get that damn "def_file" out of there. To support it in MSVCCompiler, there's already an ugly hack that unnecessarily affects both the UnixCCompiler and CCompiler classes, and I want to get rid of that. (I refer to passing the 'build_info' dictionary into the compiler classes, if you're familiar with the code -- that dictionary is part of the Distutils extension-building system, and should not propagate into the more general compiler classes.) But I don't want to give these weird "def file" things standing on the order of source files, object files, libraries, etc., because they seem to me to be a bizarre artifact of one particular compiler, rather than something present in a wide range of C/C++ compilers. Based on the NumPy model, it seems like there's a not-too-kludgy way to handle this problem. Namely: if building extension "foo": if file "foo.def" found in same directory as "foo.c" add "/def:foo.def" to MSVC command line this will of course require some platform-specific code in the build_ext command class, but I figured that was coming eventually, so why put it off? ;-) To make this hack work with NumPy, one change would be necessary: rename Src/numpy.def to Src/_numpy.def to match Src/_numpy.c, which implements the _numpy module. Would this be too much to ask of NumPy? (Paul?) What about other module distributions that support MSVC++ and thus ship with "def" files? Could they be made to accomodate this scheme? Thanks for your feedback -- Greg -- Greg Ward - software developer gward(a)cnri.reston.va.us Corporation for National Research Initiatives 1895 Preston White Drive voice: +1-703-620-8990 Reston, Virginia, USA 20191-5434 fax: +1-703-620-0913

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Can now compile simple extensions
by Greg Ward 29 Apr '18

29 Apr '18

Hi all -- at long last, I found the time to hack in the ability to compile extension modules to the Distutils. Mainly, this meant adding a 'build_ext' command which uses a CCompiler instance for all its dirty work. I also had to add a few methods to CCompiler (and, of course, UnixCCompiler) to make this work. And I added a new module, 'spawn', which takes care of running sub-programs more efficiently and robustly (no shell involved) than os.system. That's needed, obviously, so we can run the compiler! If you're in the mood for grubbing over raw source code, then get the latest from CVS or download a current snapshot. See http://www.python.org/sigs/distutils-sig/implementation.html for a link to the code snapshot. I'm still waiting for more subclasses of CCompiler to appear. At the very least, we're going to need MSVCCompiler to build extensions on Windows. Any takers? Also, someone who knows the Mac, and how to run compilers programmatically there, will have to figure out how to write a Mac-specific concrete CCompiler subclass. The spawn module also needs a bit of work to be portable. I suspect that _win32_spawn() (the intended analog to my _posix_spawn()) will be easy to implement, if it even needs to go in a separate function at all. It looks from the Python Library documentation for 1.5.2 that the os.spawnv() function is all we need, but it's a bit hard to figure out just what's needed. Windows wizards, please take a look at the 'spawn()' function and see if you can make it work on Windows. As for actually compiling extensions: well, if you can figure out the build_ext command, go ahead and give it a whirl. It's a bit cryptic right now, since there's no documentation and no example setup.py. (I have a working example at home, but it's not available online.) If you feel up to it, though, see if you can read the code and figure out what's going on. I'm just hoping *I'll* be able to figure out what's going on when I get back from the O'Reilly conference next week... ;-) Enjoy -- Greg -- Greg Ward - software developer gward(a)cnri.reston.va.us Corporation for National Research Initiatives 1895 Preston White Drive voice: +1-703-620-8990 Reston, Virginia, USA 20191-5434 fax: +1-703-620-0913

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Two fixes (at last)
by Greg Ward 29 Apr '18

29 Apr '18

Hi all -- at long last, I have fixed two problems that a couple people noticed a while ago: * I folded in Amos Latteier's NT patches almost verbatim -- just changed an `os.path.sep == "/"' to `os.name == "posix"' and added some comments bitching about the inadequacy of the current library installation model (I think this is Python's fault, but for now Distutils is slavishly aping the situation in Python 1.5.x) * I fixed the problem whereby running "setup.py install" without doing anything else caused a crash (because 'build' hadn't yet been run). Now, the 'install' command automatically runs 'build' before doing anything; to make this bearable, I added a 'have_run' dictionary to the Distribution class to keep track of which commands have been run. So now not only are command classes singletons, but their 'run' method can only be invoked once -- both restrictions enforced by Distribution. The code is checked into CVS, or you can download a snapshot at http://www.python.org/sigs/distutils-sig/distutils-19990607.tar.gz Hope someone (Amos?) can try the new version under NT. Any takers for Mac OS? BTW, all parties involved in the Great "Where Do We Install Stuff?" Debate should take a good, hard look at the 'set_final_options()' method of the Install class in distutils/install.py; this is where all the policy decisions about where to install files are made. Currently it apes the Python 1.5 situation as closely as I could figure it out. Obviously, this is subject to change -- I just don't know to *what* it will change! Greg -- Greg Ward - software developer gward(a)cnri.reston.va.us Corporation for National Research Initiatives 1895 Preston White Drive voice: +1-703-620-8990 Reston, Virginia, USA 20191-5434 fax: +1-703-620-0913

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Package versioning
by Timothy Docker 29 Apr '18

29 Apr '18

Hi all, I've been aware that the distutils sig has been simmerring away, but until recently it has not been directly relevant to what I do. I like the look of the proposed api, but have one question. Will this support an installed system that has multiple versions of the same package installed simultaneously? If not, then this would seem to be a significant limitation, especially when dependencies between packages are considered. Assuming it does, then how will this be achieved? I am presently managing this with a messy arrangement of symlinks. A package is installed with its version number in it's name, and a separate directory is created for an application with links from the unversioned package name to the versioned one. Then I just set the pythonpath to this directory. A sample of what the directory looks like is shown below. I'm sure there is a better solution that this, and I'm not sure that this would work under windows anyway (does windows have symlinks?). So, has this SIG considered such versioning issues yet? Cheers, Tim -------------------------------------------------------------- Tim Docker timd(a)macquarie.com.au Quantative Applications Division Macquarie Bank -------------------------------------------------------------- qad16:qad $ ls -l lib/python/ total 110 drwxr-xr-x 2 mts mts 512 Nov 11 11:23 1.1 -r--r----- 1 root mts 45172 Sep 1 1998 cdrmodule_0_7_1.so drwxr-xr-x 2 mts mts 512 Sep 1 1998 chart_1_1 drwxr-xr-x 3 mts mts 512 Sep 1 1998 Fnorb_0_7_1 dr-xr-x--- 3 mts mts 512 Nov 11 11:21 Fnorb_0_8 drwxr-xr-x 3 mts mts 1536 Mar 3 12:45 mts_1_1 dr-xr-x--- 7 mts mts 512 Nov 11 11:22 OpenGL_1_5_1 dr-xr-x--- 2 mts mts 1024 Nov 11 11:23 PIL_0_3 drwxr-xr-x 3 mts mts 512 Sep 1 1998 Pmw_0_7 dr-xr-x--- 2 mts mts 512 Nov 11 11:21 v3d_1_1 qad16:qad $ ls -l lib/python/1.1 total 30 lrwxrwxrwx 1 root other 29 Apr 10 10:43 _glumodule.so -> ../OpenGL_1_5_1/_glumodule.so lrwxrwxrwx 1 root other 30 Apr 10 10:43 _glutmodule.so -> ../OpenGL_1_5_1/_glutmodule.so lrwxrwxrwx 1 root other 22 Apr 10 10:43 _imaging.so -> ../PIL_0_3/_imaging.so lrwxrwxrwx 1 root other 36 Apr 10 10:43 _opengl_nummodule.so -> ../OpenGL_1_5_1/_opengl_nummodule.so lrwxrwxrwx 1 root other 27 Apr 10 10:43 _tkinter.so -> ../OpenGL_1_5_1/_tkinter.so lrwxrwxrwx 1 mts mts 21 Apr 10 10:43 cdrmodule.so -> ../cdrmodule_0_7_1.so lrwxrwxrwx 1 mts mts 12 Apr 10 10:43 chart -> ../chart_1_1 lrwxrwxrwx 1 root other 12 Apr 10 10:43 Fnorb -> ../Fnorb_0_8 lrwxrwxrwx 1 mts mts 12 Apr 10 10:43 mts -> ../mts_1_1 lrwxrwxrwx 1 root other 15 Apr 10 10:43 OpenGL -> ../OpenGL_1_5_1 lrwxrwxrwx 1 root other 33 Apr 10 10:43 opengltrmodule.so -> ../OpenGL_1_5_1/opengltrmodule.so lrwxrwxrwx 1 root other 33 Apr 10 10:43 openglutil_num.so -> ../OpenGL_1_5_1/openglutil_num.so lrwxrwxrwx 1 root other 10 Apr 10 10:43 PIL -> ../PIL_0_3 lrwxrwxrwx 1 mts mts 10 Apr 10 10:43 Pmw -> ../Pmw_0_7 lrwxrwxrwx 1 root other 10 Apr 10 10:43 v3d -> ../v3d_1_1

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[Distutils-sig] distutils charter and interscript
by John Skaller 29 Apr '18

29 Apr '18

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lineendings
by Robin Becker 16 Dec '02

16 Dec '02

Does distutils know or care about text file line endings? I ask only because I would like to be able to build pure python distros and have them work properly on multiple platforms. -- Robin Becker

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fwd: Distutils.sysconfig.get_python_lib() always returns absolute path in win32.
by Greg Ward 26 Nov '02

26 Nov '02

Can someone verify this bug report and, if appropriate, apply the included patch? Thanks -- -- Greg Ward <gward(a)python.net> http://www.gerg.ca/ Vote Cthulhu -- why settle for a lesser evil?

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RE: [Distutils] fwd: Distutils.sysconfig.get_python_lib() always returns absolute path in win32.
by Andrew MacIntyre 25 Nov '02

25 Nov '02

> Just after the branch for os.name == "mac", the OS/2 code > also uses PREFIX: > > elif os.name == "os2": > if standard_lib: > return os.path.join(PREFIX, "Lib") > else: > return os.path.join(PREFIX, "Lib", "site-packages") > > Should this be fixed, too? Only if you want to break Distutils on OS/2, which I'd prefer you didn't because it works nicely just as is. ----------------------------------------------------------------------- Andrew MacIntyre \ E-mail: andrew.macintyre(a)aba.gov.au Planning & Licensing Branch \ Tel: +61 2 6256 2812 Australian Broadcasting Authority \ Fax: +61 2 6253 3277 -> "These thoughts are mine alone!" <----------------------------------

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RE: [Distutils] Proposed bdist_dumb fix
by Andrew MacIntyre 25 Nov '02

25 Nov '02

> From: Thomas Heller [mailto:theller@python.net] > Sent: Friday, 22 November 2002 7:45 AM > To: akuchlin(a)mems-exchange.org > Cc: distutils-sig(a)python.org > Subject: Re: [Distutils] Proposed bdist_dumb fix > > > > >I has to use '--from-root 0' command-line flag, is it > supposed to work this way, > > >needing an argument? > > > > Well, if we want to stay backward compatible with the old behaviour, > > from-root has to default to true, so you need to supply an > argument of > > 0 to turn it off. Do we feel comfortable changing the default to > > false? (I don't have a problem with that, and have done so in the > > revised patch.) Or we could turn the option around and have it be > > a --relative option instead. > I don't care too much - won't use it anyway. Otherwise I > would probably > like --relative more. > > What surprised me is that you have to supply an argument to a boolean > option. bdist_wininst has a --keep-temp boolean flag, but this doesn't > need an argument. Neither does --verbose or --quiet. I recall someone (MAL?) not wanting the default changed. I think I prefer the --relative approach. Is your revised patch accessible somewhere? I'd like check it out on OS/2 when I get home. ----------------------------------------------------------------------- Andrew MacIntyre \ E-mail: andrew.macintyre(a)aba.gov.au Planning & Licensing Branch \ Tel: +61 2 6256 2812 Australian Broadcasting Authority \ Fax: +61 2 6253 3277 -> "These thoughts are mine alone!" <----------------------------------

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Proposed bdist_dumb fix
by Andrew Kuchling 22 Nov '02

22 Nov '02

Here's a proposed patch to alleviate the bdist_dumb problem. (Patch also attached to bug #410541.) It adds a --from-root Boolean option to bdist_dumb. from-root defaults to true, in which case you get the current behaviour. If you set it to false, the archive is built from $base, not /, so you end up with an archive containing ./lib/python2.3/site-packages/my-package on Unix. On Windows you should end up with ./Lib/site-packages/mypackage, ./Include/mypackage.h, etc. Ditto for the Mac. The only problem is on Unix if $platbase is different from $base. For example, you're installing Python code into /usr/share and C extensions into /usr/local/. Here the code simply throws up its hands and raises an exception. Thoughts? Is this a good solution? Does it work as I expect on Windows and MacOS 9? --amk (www.amk.ca) I'll never be cruel to an electron in a particle accelerator again. -- The Doctor, in "The Pirate Planet" Index: bdist_dumb.py =================================================================== RCS file: /cvsroot/python/python/dist/src/Lib/distutils/command/bdist_dumb.py,v retrieving revision 1.22 diff -u -r1.22 bdist_dumb.py --- bdist_dumb.py 19 Nov 2002 13:12:28 -0000 1.22 +++ bdist_dumb.py 21 Nov 2002 19:35:10 -0000 @@ -33,9 +33,13 @@ "directory to put final built distributions in"), ('skip-build', None, "skip rebuilding everything (for testing/debugging)"), + ('from-root=', None, + "build the archive using paths from the root directory " + "and not relative paths " + "(default: true)"), ] - boolean_options = ['keep-temp', 'skip-build'] + boolean_options = ['keep-temp', 'skip-build', 'from-root'] default_format = { 'posix': 'gztar', 'nt': 'zip', @@ -49,7 +53,8 @@ self.keep_temp = 0 self.dist_dir = None self.skip_build = 0 - + self.from_root = 1 + # initialize_options() @@ -97,9 +102,29 @@ if os.name == "os2": archive_basename = archive_basename.replace(":", "-") - self.make_archive(os.path.join(self.dist_dir, archive_basename), - self.format, - root_dir=self.bdist_dir) + pseudoinstall_root = os.path.join(self.dist_dir, archive_basename) + if self.from_root: + archive_root = self.bdist_dir + else: + if (self.distribution.has_ext_modules() and + (install.install_base != install.install_platbase)): + raise DistutilsPlatformError, \ + ("can't make a dumb built distribution where " + "base and platbase are different (%s, %s)" + % (repr(install.install_base), + repr(install.install_platbase))) + else: + # install_base usually is a full path; we need to + # make it a relative path so it can be the second argument + # to os.path.join(). + t = install.install_base + if t[0:1] == os.sep: + t = t[1:] + archive_root = os.path.join(self.bdist_dir, t) + + # Make the archive + self.make_archive(pseudoinstall_root, + self.format, root_dir=archive_root) if not self.keep_temp: remove_tree(self.bdist_dir, dry_run=self.dry_run)

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