2.1.16 does not build on RHEL2.1

[kmatthews]

with this error message:

gcc -g -O2 -Wreturn-type -Wmissing-prototypes -Wuninitialized -pthread
-g -O2 -I/usr/local/BerkeleyDB.4.1/include -D_FILE_OFFSET_BITS=64
-pthread -g -O2 -I/usr/local/BerkeleyDB.4.1/include
-D_FILE_OFFSET_BITS=64 -L/usr/local/BerkeleyDB.4.1/lib -L/usr/lib    -o
cfshow  cfshow.o globals.o popen.o log.o errors.o filenames.o patches.o
-lfl -lfl -ldb -lcrypto -L../pub -lpub -lnss_nis -lpthread -lm
if gcc -DHAVE_CONFIG_H -I. -I. -I. -I/usr/local/BerkeleyDB.4.1/include
-I/usr/include  -pthread  -g -O2 -Wreturn-type -Wmissing-prototypes
-Wuninitialized -pthread -g -O2 -I/usr/local/BerkeleyDB.4.1/include
-D_FILE_OFFSET_BITS=64   -pthread -g -O2
-I/usr/local/BerkeleyDB.4.1/include -D_FILE_OFFSET_BITS=64 -MT
cfetool.o -MD -MP -MF ".deps/cfetool.Tpo" -c -o cfetool.o cfetool.c; \
then mv -f ".deps/cfetool.Tpo" ".deps/cfetool.Po"; else rm -f
".deps/cfetool.Tpo"; exit 1; fi
cfetool.c: In function `DoBatch':
cfetool.c:2650: parse error before `int'
cfetool.c:2720: `timeint' undeclared (first use in this function)
cfetool.c:2720: (Each undeclared identifier is reported only once
cfetool.c:2720: for each function it appears in.)
cfetool.c:2775: `av' undeclared (first use in this function)
make[2]: *** [cfetool.o] Error 1
make[2]: Leaving directory `/usr/src/redhat/BUILD/cfengine-2.1.16/src'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/usr/src/redhat/BUILD/cfengine-2.1.16/src'
make: *** [all-recursive] Error 1
error: Bad exit status from /var/tmp/rpm-tmp.67170 (%build)