Installing bvv visualizer

[kartik14]

Hi,

I have a tarball which I'm unable to install on my linux machine.
This is a link to the package:
bvv

I unzipped it and followed the instructions in the README file.
I'm getting the following error:

[kartik@localhost bvv]$ make
gcc -O4 -g -I/usr/openwin/include  -c bvv.c
bvv.c: In function 'error':
bvv.c:116: warning: incompatible implicit declaration of built-in function 'exit'
bvv.c: In function 'x_window_setup':
bvv.c:212: warning: incompatible implicit declaration of built-in function 'exit'
bvv.c: In function 'update_byte_copy':
bvv.c:392: warning: incompatible implicit declaration of built-in function 'exit'
bvv.c: In function 'handle_event_key':
bvv.c:794: warning: incompatible implicit declaration of built-in function 'exit'
bvv.c: In function 'show_file':
bvv.c:856: warning: incompatible implicit declaration of built-in function 'exit'
bvv.c: In function 'fraga_om_limits':
bvv.c:892: warning: incompatible implicit declaration of built-in function 'exit'
bvv.c:908: warning: incompatible implicit declaration of built-in function 'exit'
bvv.c: In function 'prepare_file':
bvv.c:949: warning: incompatible implicit declaration of built-in function 'exit'
bvv.c:954: warning: incompatible implicit declaration of built-in function 'exit'
bvv.c:973: warning: incompatible implicit declaration of built-in function 'exit'
bvv.c:1002:22: error: sys/lock.h: No such file or directory
bvv.c: In function 'main':
bvv.c:1017: warning: incompatible implicit declaration of built-in function 'exit'
bvv.c:1036: warning: incompatible implicit declaration of built-in function 'exit'
make: *** [bvv.o] Error 1

Cany anyone tell me how to do it properly..
Thanks