henk@henk:~/linuxcnc/configs/lathe$ sudo halcompile --install toolchanger.comp
toolchanger.comp:46:20: fatal error: unistd.h: No such file or directory
compilation terminated.
make[4]: *** [/tmp/tmpvlkpBD/toolchanger.o] Error 1
make[3]: *** [_module_/tmp/tmpvlkpBD] Error 2
make[2]: *** [sub-make] Error 2
make[1]: *** [all] Error 2
make: *** [modules] Error 2
henk@henk:~/linuxcnc/configs/lathe$