[newbie] compilation errors

[Scott Finnie]

Hi,

Trying to build gnustep on vanilla mdk91.  Everything fine up until I 
try to build gnustep-gui, when I get build errors (below).

Any help greatfully accepted.  Messages suggest something pthread 
related - perhaps I'm missing a lib?

Thanks,
Scott.
--
make output:

Making all in gsnd...
make[2]: Entering directory 
`/home/scoot/downloads/gnustep/gnustep-gui-0.8.5/Tools/gsnd'
test -d shared_obj/ix86/linux-gnu/gnu-gnu-gnu/portaudio/pa_common || \
 mkdir -p shared_obj/ix86/linux-gnu/gnu-gnu-gnu/portaudio/pa_common ; \
 test -d shared_obj/ix86/linux-gnu/gnu-gnu-gnu/portaudio/pa_unix_oss || \
 mkdir -p shared_obj/ix86/linux-gnu/gnu-gnu-gnu/portaudio/pa_unix_oss ;
Making all for tool gnustep_sndd...
Linking tool gnustep_sndd ...
shared_obj/ix86/linux-gnu/gnu-gnu-gnu/portaudio/pa_unix_oss/pa_unix_oss.o(.text+0x72f): 
In function `PaHost_WatchDogProc':
: undefined reference to `pthread_kill'
shared_obj/ix86/linux-gnu/gnu-gnu-gnu/portaudio/pa_unix_oss/pa_unix_oss.o(.text+0x740): 
In function `PaHost_WatchDogProc':
: undefined reference to `pthread_cancel'
shared_obj/ix86/linux-gnu/gnu-gnu-gnu/portaudio/pa_unix_oss/pa_unix_oss.o(.text+0x74d): 
In function `PaHost_WatchDogProc':
: undefined reference to `pthread_join'
shared_obj/ix86/linux-gnu/gnu-gnu-gnu/portaudio/pa_unix_oss/pa_unix_oss.o(.text+0x7c8): 
In function `PaHost_StopWatchDog':
: undefined reference to `pthread_cancel'
shared_obj/ix86/linux-gnu/gnu-gnu-gnu/portaudio/pa_unix_oss/pa_unix_oss.o(.text+0x7d5): 
In function `PaHost_StopWatchDog':
: undefined reference to `pthread_join'
shared_obj/ix86/linux-gnu/gnu-gnu-gnu/portaudio/pa_unix_oss/pa_unix_oss.o(.text+0x7f7): 
In function `PaHost_StopWatchDog':
: undefined reference to `pthread_cancel'
shared_obj/ix86/linux-gnu/gnu-gnu-gnu/portaudio/pa_unix_oss/pa_unix_oss.o(.text+0x804): 
In function `PaHost_StopWatchDog':
: undefined reference to `pthread_join'
shared_obj/ix86/linux-gnu/gnu-gnu-gnu/portaudio/pa_unix_oss/pa_unix_oss.o(.text+0x864): 
In function `PaHost_StartWatchDog':
: undefined reference to `pthread_create'
shared_obj/ix86/linux-gnu/gnu-gnu-gnu/portaudio/pa_unix_oss/pa_unix_oss.o(.text+0x8a7): 
In function `PaHost_StartWatchDog':
: undefined reference to `pthread_create'
shared_obj/ix86/linux-gnu/gnu-gnu-gnu/portaudio/pa_unix_oss/pa_unix_oss.o(.text+0x11c1): 
In function `PaHost_StartEngine':
: undefined reference to `pthread_create'
shared_obj/ix86/linux-gnu/gnu-gnu-gnu/portaudio/pa_unix_oss/pa_unix_oss.o(.text+0x1289): 
In function `PaHost_StopEngine':
: undefined reference to `pthread_join'
/usr/lib/gcc-lib/i586-mandrake-linux-gnu/3.2.2/libobjc.a(thr-objc.o)(.text+0x42): 
In function `__objc_init_thread_system':
: undefined reference to `pthread_create'
/usr/lib/gcc-lib/i586-mandrake-linux-gnu/3.2.2/libobjc.a(thr-objc.o)(.text+0xb2): 
In function `__objc_close_thread_system':
: undefined reference to `pthread_create'
/usr/lib/gcc-lib/i586-mandrake-linux-gnu/3.2.2/libobjc.a(thr-objc.o)(.text+0x102): 
In function `__objc_thread_detach':
: undefined reference to `pthread_create'
/usr/lib/gcc-lib/i586-mandrake-linux-gnu/3.2.2/libobjc.a(thr-objc.o)(.text+0x134): 
In function `__objc_thread_detach':
: undefined reference to `pthread_create'
/usr/lib/gcc-lib/i586-mandrake-linux-gnu/3.2.2/libobjc.a(thr-objc.o)(.text+0x152): 
In function `__objc_thread_set_priority':
: undefined reference to `pthread_create'
/usr/lib/gcc-lib/i586-mandrake-linux-gnu/3.2.2/libobjc.a(thr-objc.o)(.text+0x212): 
more undefined references to `pthread_create' follow
collect2: ld returned 1 exit status
make[3]: *** [shared_obj/ix86/linux-gnu/gnu-gnu-gnu/gnustep_sndd] Error 1
make[2]: *** [gnustep_sndd.all.tool.variables] Error 2
make[2]: Leaving directory 
`/home/scoot/downloads/gnustep/gnustep-gui-0.8.5/Tools/gsnd'
make[1]: *** [internal-all] Error 2
make[1]: Leaving directory 
`/home/scoot/downloads/gnustep/gnustep-gui-0.8.5/Tools'
make: *** [internal-all] Error 2