Mailman 3 July 2000 - 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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Re: CygwinCCompiler, msvc hack, BCPPCompiler
by Rene Liebscher Aug. 12, 2000

Aug. 12, 2000

---- CygwinCCompiler ------------ OK, it should now be better to read. I also included your other changes (set_executables, build_temp.) ----- msvc hack ----------- I also had a look at this msvc hack in build_ext. I think it is now possible to get rid of it. It does several things which could be done in an other way or shouldn't be done at all. First, it tries to find a def-file in the source directory if none is given. I think one should specify this explicitely, who knows if it is really the right file and moreover it overwrites any export_symbols given to Extension(). Then it uses the module_name to create an export directive for the procedure 'init{modulename}'. It is possible to extract this name from the output filename (see (bcpp|cygwin)compiler.py ) I think this export parameter should be only used if neither a def file nor a list of symbols is given. (Then you could use your compiler classes also for non python dll's by specifying [] as export_symbols list.) And finally it uses the build_temp path for it implib directive. We have now this new extra parameter to link_shared_library, so this is also not a problem. When I looked at the code of build_ext I found you are not using export_symbols as parameter to link_shared_object. Also you are not using any of this export_* values from the Extension class. This should be changed. But there is one point which is not clear. There is no parameter at link_shared_object for export_symbols_file. Either we add this or we change the semantics of the existing export_symbols a bit. * export_symbols == None : no export symbols given => add init{module} * type(export_symbols) == ListType : export all symbols from this list * type(export_symbols) == StringType : take this as a filename of a def file ------ bcppcompiler ------------- Which version of Borland C you need to use it? I tried BC5. It doesn't have a linker named ilink32 (?) and it doesn't accept some of your parameters /q for bcc32 and /Gn /q for the linker (tlink32). Also it is using mypylib, which probably the stub library for python15.dll . Is this library somewhere to download or how can I create it? My BC version doesn't include files if they are in the source directory ( src/foo.c includes "foo.h" which is really src/foo.h ) so I had to specify this as an include_dir (-Isrc). If all versions of BC do the same, the directories of the source files should append to include_dir in the bcppcompiler class. Kind regards Rene Liebscher """distutils.cygwinccompiler Contains the CygwinCCompiler class, a subclass of UnixCCompiler that handles the Gnu Win32 C compiler. It also contains the Mingw32CCompiler class which handles the mingw32 compiler (same as cygwin in no-cygwin mode.) """ # created 2000/05/05, Rene Liebscher __revision__ = "$Id: cygwinccompiler.py,v 1.1 2000/06/21 03:33:03 gward Exp $" import os,sys,string from distutils import sysconfig from distutils.unixccompiler import UnixCCompiler # Because these compilers aren't configured in Python's config.h file by default # we should at least warn the user if he is using a unmodified version. def check_config_h(): """ checks, if the gcc-compiler is mentioned in config.h if it is not, compiling probably doesn't work """ from distutils import sysconfig import string,sys try: # It would probably better to read single lines to search. # But we do this only once, and it is fast enough f=open(sysconfig.get_config_h_filename()) s=f.read() f.close() try: # is somewhere a #ifdef __GNUC__ or something similar string.index(s,"__GNUC__") except ValueError: sys.stderr.write ("warning: "+ "Python's config.h doesn't seem to support your compiler.\n") except IOError: # if we can't read this file, we cannot say it is wrong # the compiler will complain later about this file as missing pass # This is called when the module is imported, so we make this check only once check_config_h() # XXX Things not currently handled: # * see UnixCCompiler class CygwinCCompiler (UnixCCompiler): compiler_type = 'cygwin' def __init__ (self, verbose=0, dry_run=0, force=0): UnixCCompiler.__init__ (self, verbose, dry_run, force) # our compiler uses other names # dllwrap: specification of entry point is not necessary self.set_executables(compiler='gcc -O -Wall', compiler_so='gcc -O -Wall', linker_exe='gcc', linker_so='dllwrap --target=i386-cygwin32') # cygwin and mingw32 need different sets of libraries self.dll_libraries=[ # cygwin shouldn't need msvcrt, # but without the dll's will crash # ( gcc version 2.91.57 ) # perhaps something about initialization # mingw32 needs it in all cases "msvcrt" ] # __init__ () def link_shared_object (self, objects, output_filename, output_dir=None, libraries=None, library_dirs=None, runtime_library_dirs=None, export_symbols=None, debug=0, extra_preargs=None, extra_postargs=None, build_temp=None): if libraries == None: libraries = [] # additional libraries # the python library is always needed on Windows # we need the python version without the dot, eg. '15' libraries = libraries + [ "python%d%d" % ( sys.hexversion >> 24, (sys.hexversion >> 16) & 0xff) ] + self.dll_libraries # name of extension if not debug: ext_name = os.path.basename(output_filename)[:-len(".pyd")] else: ext_name = os.path.basename(output_filename)[:-len("_d.pyd")] def_file = os.path.join(build_temp, ext_name + ".def") #exp_file = os.path.join(build_temp, ext_name + ".exp") #lib_file = os.path.join(build_temp, 'lib' + ext_name + ".a") # Make .def file # (It would probably better to check if we really need this, # but for this we had to insert some unchanged parts of # UnixCCompiler, and this is not what we want.) f = open(def_file,"w") f.write("EXPORTS\n") # intro if export_symbols == None: # export a function "init" + ext_name f.write("init" + ext_name + "\n") else: # if there are more symbols to export write them into f for sym in export_symbols: f.write(sym+"\n") f.close() if extra_preargs == None: extra_preargs = [] extra_preargs = extra_preargs + [ #"--verbose", #"--output-exp",exp_file, #"--output-lib",lib_file, "--def",def_file ] # who wants symbols and a many times larger output file # should explicitely switch the debug mode on # otherwise we let dllwrap strip the output file # (On my machine unstripped_file = stripped_file + 254KB # 10KB < stripped_file < ??100KB ) if not debug: extra_preargs = extra_preargs + ["-s"] UnixCCompiler.link_shared_object(self, objects, output_filename, output_dir, libraries, library_dirs, runtime_library_dirs, None, # export_symbols, we do this with our def-file debug, extra_preargs, extra_postargs, build_temp) # link_shared_object () # class CygwinCCompiler # the same as cygwin plus some additional parameters class Mingw32CCompiler (CygwinCCompiler): compiler_type = 'mingw32' def __init__ (self, verbose=0, dry_run=0, force=0): CygwinCCompiler.__init__ (self, verbose, dry_run, force) self.set_executables(compiler='gcc -mno-cygwin -O -Wall', compiler_so='gcc -mno-cygwin -O -Wall', linker_exe='gcc -mno-cygwin', linker_so='dllwrap' + ' --target=i386-mingw32' + ' --entry _DllMain@12') # mingw32 doesn't really need 'target' and cygwin too (it seems, # it is enough to specify a different entry point) # no additional libraries need # (only msvcrt, which is already added by CygwinCCompiler) # __init__ () # class Mingw32CCompiler

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installation
by fred Aug. 5, 2000

Aug. 5, 2000

I am trying to install numpy and am first installing distutils. I am running SunOS 5.7 on a sparc Ultra-4. I installed Python after downloading it from python.org. When I try to install distutils, it reports that it cannot find the <exec-prefix>/lib/python1.5/config and indeed there is no such directory in the python distribution that I can see. Fred Clare fred(a)ucar.edu

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The Western Web Newsletter
by The Western Web July 30, 2000

July 30, 2000

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New code snapshot
by Greg Ward July 29, 2000

July 29, 2000

Hi all -- I've just put together a new code snapshot. This fixes all the little bugs that have dribbled in over the last week or so, and also adds Rene Liebscher's refactoring of the file-list-generation code from sdist.py to a new class in a new module (FileList, in filelist.py -- renamed from Template in Rene's patch). Please give it a whirl -- this code will most likely become Distutils 0.9.1 to get the bug fixes out there fairly quickly (ie. without adding Rene's latest changes to various Windows compiler classes -- that can wait for 0.9.2). Oh yeah, it's at http://starship.python.net/~gward/python/distutils.html Greg -- Greg Ward - programmer-at-big gward(a)python.net http://starship.python.net/~gward/ What happens if you touch these two wires tog--

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Re: [Distutils] Absolute path library names
by Brad Chapman July 26, 2000

July 26, 2000

Lee Taylor wrote: > I'm using Distutils-0.9 on Linux with a setup file similar to > > setup (... > Extension('name', > libraries=['pgs', 'ppc', '/usr/X11R6/lib/X11') > ) > > And I'm getting the traceback [...snip...] I'm not exactly sure if I know what you are trying to do, but hopefully the following might help... The 'libraries' key is only for listing libraries that will be linked in (ie. -lpgs -lppc, from your example) and the 'library_dirs' key is for listing library directories that will be looked in for the libraries to link (ie. -L/usr/X11R6/lib/X11). So, I believe your setup.py should look like: setup (.... ext_modules = [('name', {'sources' : [ your c sources ], 'libraries': ['pgs', 'ppc'], 'library_dirs' : ['/usr/X11R6/lib/X11'] }) ] ) Hope this helps. Brad

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