#2 RH 7.* g77 -O2 optimization problem

[Douglas Schwer]

For some reason, -O2 with RH 7.2 g77 (haven't tried any
other distributions) and the dual dunssource option
causes problems. Comparing timings, the -O2
optimization doesn't seem to give any advantage over
-O, so we might want to switch to -O in general. Has
any one else experienced problems with this? The
problem turns up in the cylinder example case.

[osman buyukisik]

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No, on my SuSE7.3 with gcc 2.95.3,g77 0.5.25 seems to work
ok.

[Douglas Schwer]

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This seems to be a recurring problem with g77. It seems to
have
problems with several of the example cases, where all other
compilers will work fine. I would suggest for Linux people
use the Intel Compilers. It's available for free for
non-commercial uses, and is more efficient than g77 and much
more efficient than f2c. I have created a Makesystem_i386ic
file for the Intel compilers for any who want to use them.
If you want to use the traditional f2c compiler with the
fort77 front-end, I have also included the
Makesystem_i386f2c file.