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author | Guido van Rossum <guido@python.org> | 1995-02-07 16:59:56 (GMT) |
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committer | Guido van Rossum <guido@python.org> | 1995-02-07 16:59:56 (GMT) |
commit | 077793581da358d74789e09f10fa944105ee98d3 (patch) | |
tree | 677f99e7a71f5067d1624f8d53809d04c1023d44 /Misc/FAQ | |
parent | a3c3f2c5b05caede7a205737d2b84544054d4be7 (diff) | |
download | cpython-077793581da358d74789e09f10fa944105ee98d3.zip cpython-077793581da358d74789e09f10fa944105ee98d3.tar.gz cpython-077793581da358d74789e09f10fa944105ee98d3.tar.bz2 |
version 1.20
Diffstat (limited to 'Misc/FAQ')
-rw-r--r-- | Misc/FAQ | 73 |
1 files changed, 61 insertions, 12 deletions
@@ -6,8 +6,9 @@ Reply-to: guido@cwi.nl (Guido van Rossum) Approved: news-answers-request@MIT.Edu Archive-name: python-faq/part1 -Version: 1.19-- -Last-modified: 2 January 1995 +Submitted-by: Guido van Rossum <guido@cwi.nl> +Version: 1.20 +Last-modified: 7 Februari 1995 This article contains answers to Frequently Asked Questions about Python (an object-oriented interpreted programming language -- see @@ -101,6 +102,7 @@ Here's an overview of the questions per chapter: 3.12. Q. Trouble with prototypes on Ultrix. 3.13. Q. Trouble with posix.listdir on NeXTSTEP 3.2. 3.14. Q. Other trouble building Python on platform X. + 3.15. Q. How to configure dynamic loading on Lixux. 4. Programming in Python 4.1. Q. Is there a source code level debugger with breakpoints, step, @@ -580,11 +582,14 @@ toplevel). 3.8. Q. Python built with gcc for the DEC Alpha doesn't work. -People have reported problems with both gcc 2.5.8 and 2.6.0. The DEC -OSF/1 cc compiler does not have these problems so it's probably gcc's -fault. One person reported that the problem went away when using -g -instead of -O so this may be an option if you insist on using gcc. If -someone tracks it down more completely I'd like to hear about it! +People have reported problems with gcc 2.5.8 up to 2.6.2. The +DEC OSF/1 cc compiler does not have these problems so it's probably +gcc's fault. The latest news is that the problem still exists but +only when you use -O and only in the Modules subdirectory. So one +solution is to compile everything except Modules with gcc -O and then +do the Modules directory with gcc without -O. If you find a version +of gcc which doesn't have this bug or if you can reduce it further to +a particular file, please let me know. 3.9. Q. I use VPATH but some targets are built in the source directory. @@ -662,10 +667,9 @@ HAVE_PROTOTYPES. 3.13. Q. Trouble with posix.listdir on NeXTSTEP 3.2. -A. If you built 1.2, you probably forgot to pass -posix as mentioned -in the README file -- this links with the right version of the -libraries. If you built an earlier version, that's also your problem -(edit Makefile to add it to OPT), but you also need to remove this +A. You need to pass "-posix" to the C compiler, especially in the link +phase -- it uses the correct version of the C library. The easiest +way is perhaps to do "make OPT=-posix". You also need to remove this NeXT-specific section from import.c: #if defined(NeXT) || defined(WITH_RLD) @@ -682,6 +686,51 @@ version) you are using it will be difficult for me to figure out what is the matter. If you get a specific error message, please email it to me too. +3.15. Q. How to configure dynamic loading on Lixux. + +A. (Thanks to Andrew Kuchling): + +Linux requires that you use the GNU DLD library. The stages of using +dynamic libraries on Linux are: + +1) Get dld from [some -- see below] Linux site. I believe the version +number is 3.2.4. Be careful here; the most recent GNU version is +3.2.3, and doesn't support Linux; be sure to get it from a Linux +mirror, not a GNU mirror. Compile it and install the library libdld.a +somewhere; I used /usr/local/lib. + +2) Get Jack Jansen's DL library; its location is given in the +_Extending Python_ manual as ftp://ftp.cwi.nl/pub/dynload/. Compile +it and install libdl.a wherever you put libdld.a. + +3) Run Python's configure script, giving it the --with-dl-dld option, +which requires a parameter giving the directory where you put the +libraries. + +4) Recompile Python. + +If you run into trouble with this, send me some mail and we can work +on the problem. + +I don't use ELF binaries, because I'd rather wait until everything is +reliable; my current impression (and please correct me if I'm wrong) +is that gcc-elf is still a bit wonky, and you have to compile the +entire GNU library yourself. I'd much rather wait until ELF is a more +standard part of Linux distributions. I suspect that once ELF is +common, Python's configure script will pick up the dlfcn.h header file +and dynamic linking will work automatically. Time will tell, +however... + +It turns out that Linux DLD is not on sunsite.unc.edu; instead it's +located at: +<URL:ftp://tsx-11.mit.edu/pub/linux/sources/libs/dld-3.2.4.src.tar.gz> + +tsx-11 has mirrors; off the top of my head, one is ftp.uu.net, where +the URL would be: +<URL:ftp://ftp.uu.net/systems/unix/linux/sources/libs/dld-3.2.4.src.tar.gz> + + + 4. Programming in Python ======================== @@ -977,7 +1026,7 @@ Anthony Baxter <anthony.baxter@aaii.oz.au> has written an interface to mSQL (mini-SQL). <URL:ftp://ftp.cwi.nl/pub/python/PymSQL.tar.gz>. Tom Culliton <culliton@clark.net> has written an Oracle module. Write -him to get a copy of a late BETA version. +him to get a copy of the latest version. 4.15. Q. Is it possible to write obfuscated one-liners in Python? |