error unpacking and compiling

[Joshua Robinson <joshuarobinson@xxxxxxx>]

Hi,

I am a newbie to OpenInventor (one day 5 hours 37 minutes 2 seconds  :-)   - don't ask how I know!
).

my settings:
IVROOT=/home/joshuar/inventor
LIBTYPE and FREETYPE are not set, using default.

I have downloaded the Linux version and ran gmake as it says in the README.FIRST
file, It compiled with the following errors:
---------------------------------
/home/joshuar/inventor//usr/lib/InventorDebug/libInventor.so: undefined reference
 to `pthread_getspecific'
/home/joshuar/inventor//usr/lib/InventorDebug/libInventor.so: undefined reference
 to `XextAddDisplay'
/home/joshuar/inventor//usr/lib/InventorDebug/libInventor.so: undefined reference
 to `pthread_key_create'
/home/joshuar/inventor//usr/lib/InventorDebug/libInventor.so: undefined reference
 to `XextFindDisplay'
/home/joshuar/inventor//usr/lib/InventorDebug/libInventor.so: undefined reference
 to `XextCreateExtension'
/home/joshuar/inventor//usr/lib/InventorDebug/libInventor.so: undefined reference
 to `XextRemoveDisplay'
/home/joshuar/inventor//usr/lib/InventorDebug/libInventor.so: undefined reference
 to `XMissingExtension'
/home/joshuar/inventor//usr/lib/InventorDebug/libInventor.so: undefined reference
 to `pthread_setspecific'
collect2: ld returned 1 exit status
gmake[3]: *** [ivman] Error 1
gmake[3]: Leaving directory `/home/joshuar/inventor/doc/man/ivman'
gmake[2]: *** [all] Error 1
gmake[2]: Leaving directory `/home/joshuar/inventor/doc/man'
gmake[1]: *** [all] Error 1
gmake[1]: Leaving directory `/home/joshuar/inventor/doc'
gmake: *** [all] Error 1
---------------------------------

Any help will be appreciated,

Cheers,
-Joshua-