Linux Format forums

wiz · Posted: Wed Jun 28, 2006 11:46 pm Post subject: G++ compile errors

I am trying to compile some code and I keep getting errors that look like compiler or library version problems.

Nigel · Posted: Wed Jun 28, 2006 11:59 pm Post subject: RE: G++ compile errors

What is line 52 of cstddef ?
Also, what are the lines just before line 40 of imgstream.hh and line 31 of imgstream.cc ?

jjmac · Posted: Thu Jun 29, 2006 12:49 am Post subject: RE: G++ compile errors

/usr/include/c++/3.4/cstddef

wiz · Posted: Thu Jun 29, 2006 7:28 am Post subject:

The code I am trying to compile was written by Epson for a scanner driver so I am certain that the syntax is correct, I have not changed it at all.

The compiler is finding errors in the C++ library code from #include statements in the Epson code

I will post a few more details later. I'm off to work Sad

wiz · Posted: Thu Jun 29, 2006 8:57 pm Post subject:

Found a whole load of gobbledegook about it at http://tinyurl.com/ndw32

It looks as though it just needs a bit more experimenting to figure out what is going on.

edit: The bit about compiling from source is down at the bottom of the page

jjmac · Posted: Mon Jul 03, 2006 10:12 am Post subject:

>>
The code I am trying to compile was written by Epson for a scanner driver so I am certain that the syntax is correct, I have not changed it at all.
>>

Thats very trusting of you Smile

.

Unless "using namespce std;" is decleared at the top of a src file, any following types that are scoped/wrapped by that namespace will be unknown to the compiler. As "unknown" type messages were being generated, especially for something like ::malloc, i figured it would be worth checking on.

>>
The compiler is finding errors in the C++ library code from #include statements in the Epson code
>>

Just looking at that link briefly, and the nature of the patches, the errors are more likely being generated by the epson src. And yes, there is an abi change between 3.3.x and 3.4.x which probably is the root of the fails.

jm
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wiz · Posted: Mon Jul 03, 2006 1:58 pm Post subject:

Thanks. This was part of a rushed job so I couldn't afford to spend too much time on it.
I got the scanner working by using Xsane with a driver from the Windoze software disk, but Xsane takes almost 40! seconds to start.
I will get back to it when I have more time, I want to know what is wrong for future reference.