Where is the variable PROLDLIBS set?

Hi, we are migrating from UNIX to Linux machines. It’s been about 8 years since I worked with ‘C’ so I’m not too great with makefiles.  When I compile on the new machine I get

/usr/bin/cc -o /vobs/steps/bin/ssautil_SetPrinter /vobs/steps/src/ssa/util/util_SetPrin

eps/lib/sdbutil_dataBaseLib.a -lclntsh `cat /opt/oracleas/WLS10/Oracle_FRHome/lib/ldflags`   `c

s/WLS10/Oracle_FRHome/lib/sysliblist` -R/opt/oracleas/WLS10/Oracle_FRHome/lib -laio  -lposix4 

cc: unrecognized option '-R/opt/oracleas/WLS10/Oracle_FRHome/lib'

/usr/bin/ld: cannot find -lclntsh

collect2: ld returned 1 exit status