Re: [ePiX-users] ePiX2 web page

[Andrew D. Hwang]

On Fri, 25 Aug 2006, Christian Pötzsch wrote:

> I tried the new pre release of epix2 but with no success. The compiler
> complain not knowing about the vector class in the point class:
>
> [snip]
> Point.h:54: error: expected ',' or '...' before '&' token
> Point.h:54: error: ISO C++ forbids declaration of 'Vector' with no type
> [snip]
> make[1]: Leaving directory `/home/poetzsch/nobackup/Downloads/epix2/src'
> make: *** [all-recursive] Error 1
Christian,

Thanks for trying out ePiX2, and sorry if the bad packaging caused you any 
inconvenience. (I've uploaded a package that unpacks into a subdirectory
and contains two formerly missing symlinks.)

> After looking into Point.h the error is comprehensible. There is a
> forward declaration of the Vector class, but no include statment. In
> Vector.h the Point class is used also, which leads in a recursion. I
> don't know why this compiles at your side. Maybe I miss something.
I build and test with gcc-3.3.2, and versions of the compiler older than 
about 3.4 seem to be more lax about the (bad/non-compliant) syntax they'll 
accept, which may be the reason I don't get errors (or even warnings with 
-Wall) when compiling this code.

Did including Vector.h in Point.h allow the package to build for you?

Are you using g++-4.x?

Thanks,
Andy

Andrew D. Hwang                 address@hidden
Department of Math and CS       http://math.holycross.edu/~ahwang
College of the Holy Cross       (508) 793-2458 (Office: 320 Swords)
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