Re: [hpoj-devel] new "ptal-mlcd" I/O driver checked into CVS

[<pa...@rc...>]

Joe Piolunek wrote:
> Unfortunately, the error still occurs.
Bummer.  :-)

> A search for " /usr/include/sys/io.h:98: parse error before `::'" turned up a 
> few comments indicating that it may be related to a bug in gcc, which may be 
> fixed in ver. 2.96 . There was a report of the problem going away if using an 
> earlier version of glibc.
Remind me again which version of RedHat you're using?  Are these the stock
versions of glibc and gcc that came with this version?

> A suggested fix is to "change '::' to ' : : ' in 
> sys/io.h" .
Does that work?  Of course, that isn't a proper solution, since I don't want
people to have to hack system include files in order to build hpoj.

> I tried to use a #define ... #undef wrapper, but got errors about 
> using an improper macro name.
I'm not surprised that that doesn't work.  Generally #define only works with
symbols, not operators.

I'm wondering if this problem only affects C++ and not C code.  Could you
please try writing a simple "hello world" program compiled as C (not C++),
and include this file?  If it works OK for C code, then perhaps I could add
a small C wrapper for the in/out functions to avoid including this file in
a C++ file.  Of course, it wouldn't be good for performance, since those
functions would no longer be inlined.

David