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| author | Guido van Rossum <guido@python.org> | 2001-04-14 13:09:53 (GMT) |
|---|---|---|
| committer | Guido van Rossum <guido@python.org> | 2001-04-14 13:09:53 (GMT) |
| commit | 7be8ca0d427c15ef0174623fc7c5a0691a97d08c (patch) | |
| tree | b6ec21c9e1dec68b9121791e1cfb542ea44d39d9 /README | |
| parent | b891891d005c4c98bb747271fb7c3e8fe23671a5 (diff) | |
| download | cpython-7be8ca0d427c15ef0174623fc7c5a0691a97d08c.zip cpython-7be8ca0d427c15ef0174623fc7c5a0691a97d08c.tar.gz cpython-7be8ca0d427c15ef0174623fc7c5a0691a97d08c.tar.bz2 | |
Add more general warning against the SGI optimizer.
Diffstat (limited to 'README')
| -rw-r--r-- | README | 12 |
1 files changed, 5 insertions, 7 deletions
@@ -359,16 +359,14 @@ SGI: SGI's standard "make" utility (/bin/make or /usr/bin/make) does not check whether a command actually changed the file it is supposed to build. This means that whenever you say "make" it will redo the link step. The remedy is to use SGI's much - smarter "smake " utility (/usr/sbin/smake), or GNU make. If + smarter "smake" utility (/usr/sbin/smake), or GNU make. If you set the first line of the Makefile to #!/usr/sbin/smake smake will be invoked by make (likewise for GNU make). - There is a bug in the SGI compiler's optimization that causes a - bus error in PyComplex_ImagAsDouble(); this has been reported to - be triggered when importing Numeric Python and may be caused at - other times. The work-around is to build Python, delete the - Objects/complexobject.o file, and then recompile without - optimization (use "make OPT="). + WARNING: There are bugs in the optimizer of some versions of + SGI's compilers that can cause bus errors or other strange + behavior, especially on numerical operations. To avoid this, + try building with "make OPT=". OS/2: If you are running Warp3 or Warp4 and have IBM's VisualAge C/C++ compiler installed, just change into the pc\os2vacpp directory |