Problem: Failed Make on Linux Pgres v. 7.1.2

Help.. I had been running my compiled source v. 7.0.3 this compiled and
runs fine..
First is there a great need to move to v. 7.1.2?
What advantages are offred?
I had one success and two failures on Make .....
DUe to either the libc difference or GNU Make difference
If I am right is it worth the trouble to upgrade the libc..
I haven't done that chore in years and can't remember how???

Below are my results ... PLease advise

Failed MAKE Installed
Caldera linux 2.3 kernal 2.2.10 Caldera linux 2.4 kernal 2.2.13
libc-2.1.1.so ld-2.1.1.so vs. libc-2.2.2.so ld-2.1.2.so
GNU make 3.77 vs GNU Make 3.78.1

Postgresql 7.1.2 make errors

/usr/lib/gcc-lib/i386-linux/egcs-2.91.66/crtendS.o: In function
`init_dummy':
/usr/lib/gcc-lib/i386-linux/egcs-2.91.66/crtendS.o(.text+0x53):
undefined reference to
`___brk_addr'
make[3]: *** [libpsqlodbc.so.0.26] Error 1
make[3]: Leaving directory
`/usr/src/OpenLinux/SOURCES/postgresql-7.1.2/src/interfaces/odbc'
make[2]: *** [all] Error 2
make[2]: Leaving directory
`/usr/src/OpenLinux/SOURCES/postgresql-7.1.2/src/interfaces'
make[1]: *** [all] Error 2
make[1]: Leaving directory
`/usr/src/OpenLinux/SOURCES/postgresql-7.1.2/src'
make: *** [all] Error 2
[root postgresql-7.1.2]#
libc-2.1.1.so ld-2.1.1.so vs. 2.1.2.so
and GNU make 3.77 vs 3.78.1

Bob T