Hi Jens, On Sun, 2004-05-16 at 11:24, Jens Petersen wrote:
Hi,
I have a problem when processing "vte/vte.h" (from vte-0.11.10) with c2hs-0.12.0 and glibc-2.3.3:
LANG=C c2hs --cppopts="-I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/pango-1.0 -I/usr/X11R6/include -I/usr/include/freetype2 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include" vte.h Vte.chs c2hs: Generic fatal error.
/usr/include/sys/sysmacros.h:43: (column 1) [FATAL]
Syntax error! The symbol `{' does not fit here.
It seems sys/sysmacros.h changed from glibc-2.3.2. Here is the context:
# if defined __GNUC__ && __GNUC__ >= 2 __extension__ extern __inline unsigned int gnu_dev_major (unsigned long long int __dev) __THROW { return ((__dev >> 8) & 0xfff) | ((unsigned int) (__dev >> 32) & ~0xfff); }
The problem is the function body. C->Haskell's parser does not understand them (as they usually don't occur in header files). It is not hard to extend the parser to parse them and for c2hs to ignore them (after all C's statement syntax is quite simple and c2hs already handles expressions). I'll make this the next thing to add to c2hs (unless somebody beats me to it - it really is straight forward if you have got a C grammar at hand). It would be harder to find a way to actually use such functions from Haskell. gnu_dev_major is supposed to be inlined, which is hard to do in Haskell code.
Jens
ps glibc-2.3.3 will be in Fedora Core 2, which is being released on Tuesday.
pps I just uploaded c2hs-0.12.0 rpms built with glibc-2.3.3 to http://haskell.org/~petersen/rpms/c2hs/.
The web server claims I don't have permission to access this directory.
I applied the following patch to build it with ghc-6.2.1:
--- c2hs-0.12.0/c2hs/c/CAttrs.hs~ 2004-05-16 09:46:07.000000000 +0900 +++ c2hs-0.12.0/c2hs/c/CAttrs.hs 2004-05-16 09:46:07.000000000 +0900 @@ -144,7 +144,7 @@ -- leaveObjRangeC :: AttrC -> AttrC leaveObjRangeC ac = ac { - defObjsAC = fst . leaveRange . defObjsAC $ ac, + defObjsAC = fst . leaveRange . defObjsAC $ ac }
-- add another definitions to the object name space (EXPORTED)
Thanks, that's been included in the CVS version. Cheers, Manuel