I'm continuing my attempt to compile the fvwm2 window manager on my SCO
OpenServer 5.0.2 system. (It's basically unusable until I can get this
done! please help!)
Users have suggested I look into c preprocessor macro expansion problems
which we believe are causing at least part of my problem.
It appears as though the expanded macros have more spaces in them than
the c compiler would like to see.
Here's a snippet from the original code, in add_window.c:
----------------------------------------------------------------
/* ORIGINAL CODE WHICH CAUSES SCO COMPILER TO PRODUCE AN ERROR
tmp_win->title_height = GetDecor(tmp_win,TitleHeight) + tmp_win->bw;
*/
/* THIS LINE, WHICH SHOULD BE EXPANED BY THE MACRO, COMPILES. */
tmp_win->title_height = ( ( tmp_win )->fl->TitleHeight ) +
tmp_win->bw;
------------------------------------------------------------------
This is what cc -E add_window.c (with all other Makefile options like
-DUSEDECOR added, also.)
# 227
tmp_win->title_height = ( ( tmp_win ) -> fl ->TitleHeight ) + tmp_win
-> bw ;
I'm guessing that with the extra spaces, the compiler doesn't recognize
-> for pointers and is producing errors. The above code is exactly this
minus the spaces and seems to compile fine.
Here's the macro, unmodified:
---------------------------------------------------------------------
/* FROM screen.h THE ORIGINAL MACRO CODE
Macro which gets specific decor or default decor.
This saves an indirection in case you don't want
the UseDecor mechanism.
*/
#ifdef USEDECOR /* THIS IS WHAT i WANT TO USE */
#define GetDecor(window,part) ((window)->fl->##part)
#else
#define GetDecor(window,part) (Scr.DefaultDecor.##part)
#endif
------------------------------------------------------------------------
I'd appreciate any help, especially if there are c/cpp switches I can
use to overcome this. I'm 80% done, but this last 20% is not so easy.
THANKS! (PLEASE HELP!?!)
--
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Received on Wed Apr 30 1997 - 13:00:09 BST