oracle 805 on linux mandarake 7 install error.

[Bunyamin K. Karadeniz]

I try to install oracle 805 on linux mandarake 7  but . When installing the selected products it gives the error below.     error : command : make -f ins_rdbms.mk  /u01/...../rdbms/lib/psoliblist sh : command not found   why can it be ? Thank you