I'm trying to rebuild "fetchmail-6.2.5-6.el4.2.src.rpm". When I initiate the rpmbuild --rebuild fetchmail-6.2.5-6.el4.2.src.rpm. I get the following error below:

You can ignore any makedepend error messages:
makedepend: warning: /usr/include/gnu/stubs.h: non-portable whitespace encount ered at line 7
makedepend: warning: driver.c (reading /usr/include/krb5.h), line 143: #error u ndefined 16 bit type
makedepend: warning: driver.c (reading /usr/include/krb5.h), line 156: #error: undefined 32 bit type
makedepend: warning: driver.c (reading kerberos.h, line 14): cannot find includ e file "com_err.h"
not in /usr/local/lib/gcc-include/com_err.h
not in /usr/include/com_err.h
not in /usr/lib/gcc/i386-redhat-linux/3.4.3/include/com_err.h
+ make
cd . && /bin/sh /usr/src/redhat/BUILD/fetchmail-6.2.5/missing --run aclocal-1.6
aclocal: configure.in: 72: macro `AM_GNU_GETTEXT' not found in library
make: *** [aclocal.m4] Error 1
error: Bad exit status from /var/tmp/rpm-tmp.35891 (%build)

Does anyone know was is causing this to occur and how to fix it?