Suddenly I cannot compile anymore

[Benedek Frank <linux@celifornia.com>]

Hi

I have my Dell700m working for ages now, and I have had no problem since, up 
until now. I am running Debian Sarge, always up to date, I do the upgrades 
every day. Just today, I tried to compile a little Dockable WM applications 
to show the CPU speed at all times, but it failed.How strange I thought, so I 
tried to compile any other things, but they also failed. I dont know what 
must have happened suddenly. Well, suddenly I am not sure, I havent tried to 
compile in a while.

I have gcc-3.3.5 currently, so I tried gcc-3.4 but no help. Still fails. I 
then loaded back my original 2.6.8 kernel (I currently run 2.6.9) but that 
one fails as well. Here is an example error I got, when I tried to compile:

dell700m:/home/ben/wmcpum.app-0.1.0/wmcpum# make
gcc -Wall   -c -o wmcpum.o wmcpum.c
wmcpum.c:25:22: X11/Xlib.h: No such file or directory
wmcpum.c:26:21: X11/xpm.h: No such file or directory
wmcpum.c:27:34: X11/extensions/shape.h: No such file or directory
In file included from wmcpum.c:29:
../wmgeneral/wmgeneral.h:30: error: parse error before "Pixmap"
../wmgeneral/wmgeneral.h:30: warning: no semicolon at end of struct or union
../wmgeneral/wmgeneral.h:31: warning: type defaults to `int' in declaration 
of`mask'
../wmgeneral/wmgeneral.h:31: warning: data definition has no type or storage 
class
../wmgeneral/wmgeneral.h:32: error: parse error before "attributes"
../wmgeneral/wmgeneral.h:32: warning: type defaults to `int' in declaration 
of`attributes'
../wmgeneral/wmgeneral.h:32: warning: data definition has no type or storage 
class
../wmgeneral/wmgeneral.h:33: warning: type defaults to `int' in declaration 
of`XpmIcon'
../wmgeneral/wmgeneral.h:33: warning: data definition has no type or storage 
class
../wmgeneral/wmgeneral.h:39: error: parse error before '*' token
../wmgeneral/wmgeneral.h:39: warning: type defaults to `int' in declaration 
of`display'
../wmgeneral/wmgeneral.h:39: warning: data definition has no type or storage 
class
wmcpum.c: In function `main':
wmcpum.c:159: error: `XEvent' undeclared (first use in this function)
wmcpum.c:159: error: (Each undeclared identifier is reported only once
wmcpum.c:159: error: for each function it appears in.)
wmcpum.c:159: error: parse error before "event"
wmcpum.c:197: warning: implicit declaration of function `XPending'
wmcpum.c:198: warning: implicit declaration of function `XNextEvent'
wmcpum.c:198: error: `event' undeclared (first use in this function)
wmcpum.c:200: error: `Expose' undeclared (first use in this function)
wmcpum.c:203: error: `DestroyNotify' undeclared (first use in this function)
wmcpum.c:204: warning: implicit declaration of function `XCloseDisplay'
make: *** [wmcpum.o] Error 1
dell700m:/home/ben/wmcpum.app-0.1.0/wmcpum#    

IS there anything obvious that I dont see? Please help it is very frustrating.

Thanks 

Bence