Re: flexlexer.h include path

[Han-Wen Nienhuys]

Werner Scheinast wrote:
> Am 01.06.05 schrieb Werner Scheinast:
>
>
> > "make clean" (or the "make" before) also removes some files included in 
> > the original source package, especially these four in the directory 
> > lily/out/: FlexLexer.h, lexer.cc, parser.cc, parser.hh
> > During the second "make" they are created again - or just copied 
> > from my system includes (in case of FlexLexer.h).
> > So, my guess is that the first build attempt accesses one of these 
> > original files, which leads to a conflict with the later dynamically 
> > created ones.
>
>
> I had another look at this.
>
> First, thanks for removing the spurious configure warning about flex in 
> 2.5.27. But the actual bug persists with that new release:
> The first time build fails because of an incompatibility with my flex 
> version 2.5.31. lily/includable-lexer.cc employs some variables 
> (yy_buffer_stack, yy_buffer_stack_top) that are not declared in the 
> lily/out/FlexLexer.h delivered with lilypond, but they are declared in 
> my /usr/include/FlexLexer.h. For some strange reason, the former is 
> included in lily/includable-lexer.cc _before_ it is overwritten by the 
> latter.
> In fact, when I delete FlexLexer.h and lexer.cc in lily/out/ before the 
> build, it works with the first attempt. Therefore my question:
> Are these files needed for anything?

Yes, they are there for all those people that have old Flex versions, 
which will break lilypond compiles. What you have, is the FlexLexer.h 
from my system (as I build the tarballs).  What puzzles me is that I can 
 compile it (I use g++ 3.4) but you can't. Can you send me the output of

  g++ -E

so I can analyse the problem in more detail?

thanks.

--
 Han-Wen Nienhuys - address@hidden - http://www.xs4all.nl/~hanwen