Mailman 3 July 2002 - Distutils-SIG

Sample setup.py for Numeric Python
by Greg Ward April 29, 2018

April 29, 2018

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 April 29, 2018

April 29, 2018

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 April 29, 2018

April 29, 2018

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 April 29, 2018

April 29, 2018

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 April 29, 2018

April 29, 2018

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setting string macros
by Robin Becker July 27, 2002

July 27, 2002

I'm having a problem win32 vs freeBSD/unices under win32 the executed command string appears like this -DLIBART_VERSION=\"2.3.10\" so the setup.py code looks like define_macros=[('LIBART_VERSION','\\"2.3.10\\"')] but this causes problems with unices (unterminated string constant errors) and I have to use define_macros=[('LIBART_VERSION','"2.3.10"')] I guess this relates to problems in system under win32, but is there a 'correct' way to get string macros defined. -- Robin Becker

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Re: [I18n-sig] JapaneseCodecs 1.4.7 released
by Barry A. Warsaw July 25, 2002

July 25, 2002

[Adding distutils-sig(a)python.org >>>>> "MvL" == Martin v Loewis <martin(a)v.loewis.de> writes: >> I just realized we still have a problem with this distutils >> package. It still insists on installing japanese.pth in >> /usr/local/lib/python-2.2/site-packages even if I include >> --install-lib and --install-purelib switches to the "python >> setup.py install" command. MvL> Since japanese.pth is processed as a 'data' file, you have MvL> two options: 1. Only invoke the install_lib command, not the MvL> install command. This will then avoid the install_headers, MvL> install_scripts, and install_data commands (the first two not MvL> being used here, anyway). MvL> 2. Provide the --install-data= argument to the install MvL> command, to specify an alternative prefix for data files. I think I'm going to go with your second suggestion, since it fits in better with what I've already got. ObDistutils: the install command has a --root option and a --home option, both of which would seem to do what I want, but neither quite do. E.g. invoking install with --root=/tmp/foo leaves me with /tmp/foo/usr/local/lib/python2.1/site-packages/<pkg> and invoking with --home=/tmp/foo leaves me with /tmp/foo/lib/python/<pkg> What I really want is an option to leave me with /tmp/foo/<pkg> so that I can put /tmp/foo on sys.path and be done with it, yet still guarantee that distutils will only install files under /tmp/foo and no where else. It seems that I'm left with this as my best option: % python setup.py install --install-lib /tmp/foo --install-purelib \ /tmp/foo --install-data /tmp/foo That still leaves me with /tmp/foo/lib/pythonX.Y/site-packages/japanese.pth but I'll ignore that for now <wink>. Am I whacked not to want those extra directories in what I have to set my PYTHONPATH to? Maybe I'm just bucking the natural order of things, but I still think I'd like an install command option that collapses those three options into one. If distutils is going to be used to install stuff in a site-packages override directory, or in a user-specific search-first directory, I think we need to make this simpler. but-maybe-I'm-insane-ly y'rs, -Barry

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Trying to build extensions with Borland compiler
by Godefroid Chapelle July 25, 2002

July 25, 2002

Hi, When running the Zope3 C extensions building script, I get the following message generated by distutils.spawn module : Building extensions in C:\Projects\Zope3\lib\python\Zope\Security running build_ext building '_Proxy' extension skipping _Proxy.c (build\temp.win32-2.2\Release\_proxy.obj up-to-date) writing build\temp.win32-2.2\Release\_Proxy.def c:\Program Files\Borland\Bcc55\bin\ilink32.exe /Tpd /Gn /q /x /LC:\Python22\libs /L. "/Lc:\Program Files\Borland\Bcc55\lib" c0d32 build\temp.win32-2.2\Release\_ proxy.obj , _Proxy.pyd ,, C:\Python22\libs\python22_bcpp.lib import32 cw32mt , b uild\temp.win32-2.2\Release\_Proxy.def , Fatal: Unable to open file 'LIB.OBJ' error: command 'ilink32.exe' failed with exit status 2 I have not been able to find out where this LIB.OBJ file should be found. I wonder if it comes from the Borland side or from the Python library side. I must say that the _proxy.obj was built on my machine with the compiler. Any help appreciated. -- Godefroid Chapelle BubbleNet sprl rue Victor Horta, 18 / 202 1348 Louvain-la-Neuve Belgium Tel + 32 (10) 459901 Mob + 32 (477) 363942 TVA 467 093 008 RC Niv 49849

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distutils parsing Makefile?
by Mark Hammond July 18, 2002

July 18, 2002

Hi all, I have a patch at source-forge I would like some distutils related input on. www.python.org/sf/566100 - Patch [ 566100 ] Rationalize DL_IMPORT and DL_EXPORT In particular, Makefile.pre.in has been modified thus: <patch> RCS file: /cvsroot/python/python/dist/src/Makefile.pre.in,v retrieving revision 1.86 diff -u -r1.86 Makefile.pre.in --- Makefile.pre.in 21 Jun 2002 14:48:36 -0000 1.86 +++ Makefile.pre.in 5 Jul 2002 06:41:28 -0000 @@ -65,7 +65,7 @@ # Extra C flags added for building the interpreter object files. CFLAGSFORSHARED=@CFLAGSFORSHARED@ # C flags used for building the interpreter object files -PY_CFLAGS= $(CFLAGS) $(CPPFLAGS) $(CFLAGSFORSHARED) +PY_CFLAGS= $(CFLAGS) $(CPPFLAGS) $(CFLAGSFORSHARED) -DPy_BUILD_CORE # Machine-dependent subdirectories </patch> The idea is that Py_BUILD_CORE is defined *only* when building Python itself and builtin modules, but not for extension modules. On python-dev, Guido raised the following concern: <quote> My only concern would be that tools which parse the Makefile (I believe distutils does this?) should not accidentally pick up the "-DPy_BUILD_CORE" flag. </quote> Can anyone here tell me if this will be an issue for distutils? Does distutils do any parsing of the Makefile, and if so, is my change likely to work as intended? Thanks, Mark.

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Python extenstion pyo instead of pyc
by Leon Widdershoven July 15, 2002

July 15, 2002

Hi, I have a problem installing modules using setup.py bdist_rpm due to the fact that I have PYTHONOPTIMIZE=2 defined in my profile. This causes the build to fail as rpm expects a .pyc file, not a pyo file. This can be easily solved in an automatic way, just create the expected extension based on the PYTHONOPTIMIZE variable, or unset this variable during the build. The distutils I use are revision v. 1.53 (taken from dist.py). Best regards, Leon Widdershoven

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