Figure 1: Try to compile and link main1.

HP-UX:sample1> gmake main1
gcc -c -o main.o main.cc
gcc -c -o owncode1.o owncode1.cc
gcc main.o owncode1.o -L./native_library/HP-UX -lnative -o main1
/usr/bin/ld: Unsatisfied symbols:
   calcEllipse(EllipseData)     (first referenced in owncode1.o) (code)
collect2: ld returned 1 exit status
gmake: *** [main1] Error 1
HP-UX:sample1>