Experimental Physics and
Industrial Control System

Andrew Johnson <[email protected]> · Wed, 17 Nov 2004 14:17:01 -0600

Ronald L. Sluiter wrote:

I reported a problem with the Tornado 2.2.1 supplied compiler
via the Mantis Bug Reporting mechanism; Bug ID #82.
The jest of the report is that the epicsThreadSleepQuantum() function
returns erroneous values when -O3 optimization is used.

We're turning down the optimization level of the 68K C compiler in Base
R3.14.7 to -O0 as a result of this bug. The C++ compiler is not affected.
I guess this will also fix the calc record problem.
For those who don't know, the Tornado 2.x C compiler is actually pretty
ancient, being based on gcc 2.7.2 (1996). Their C++ compiler has a
somewhat more recent origin, although it's still old (EGCS, 1997). WRS
are rightly assuming that their customers need object code compatibility
for existing object-only libraries, which any significant gcc upgrade
would break. The best way to find your compiler version is to run the
relevent compiler with a '-v' switch.
- Andrew
--
Dear God, I didn't think orange went with purple until I saw
the sunset you made last night.  That was really cool. - Caro

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System