flexfax: Compiling hylafax-v4.0pl2 on Redhat 5.1?

[Adrian Blakey <ajb@alameda.net>]

I have run into a number of compilation errors try to compile with: gcc
version 2.7.2.3 and glibc-2.0.7-19 on linux-2.0.34.

The first one is:

 Entering directory `/usr/src/hylafax-v4.0pl2/util'
/usr/bin/g++      -I.././zlib                     -D__ANSI_CPP__ -I.
-I.. -I.././util -I.././util -I/usr/local/include -I.././regex -g -O  -c
SendFaxJob.c++
SendFaxJob.c++: In method `unsigned char SendFaxJob::createJob(class
SendFaxClient &, class fxStr &)':
SendFaxJob.c++:499: no matching function for call to
`FaxClient::sendZData (int &, unsigned char (FaxClient::)(fxStr &, fxStr
&), fxStr &, fxStr &)'
FaxClient.h:273: candidates are: FaxClient::sendZData(int, unsigned char
(FaxClient::*)(fxStr &, fxStr &), fxStr &, fxStr &)
make[3]: *** [SendFaxJob.o] Error 1

Any suggestions?