I am using the install.sh script that comes with driver source as root and it fails on "Compile the kernel". Here are the messages and the install.log dump.
____________________
Create tmp dir (/tmp/Sk98IaqPGGconQbbDDMcoJTSF) [ OK ]
Check user id (0) [ OK ]
Check kernel version (2.6.7-bigphys) [ OK ]
Check kernel symbol file (/proc/kallsyms) [ OK ]
Check kernel type (SMP) [ OK ]
Check number of CPUs (4) [ OK ]
Check architecture (found) [ OK ]
Set architecture (i386) [ OK ]
Check compiler (/usr/bin/gcc) [ OK ]
Check mcmodel flags (none) [ OK ]
Check module support (/sbin/insmod) [ OK ]
Check make (/usr/bin/make) [ OK ]
Check archive file (sk98lin) [ OK ]
Check kernel gcc version (3.2.2) (Kernel:3.2.2 == gcc:3.2.2) [ OK ]
Check sk98lin driver availability (not loaded) [ OK ]
Check kernel header files (/usr/src/linux) [ OK ]
Unpack the sources (done) [ OK ]
Check sources for .config file (/usr/src/linux/.config) [ OK ]
Copying file from proc directory (done) [ OK ]
Copy and check .config file (done) [ OK ]
Check the mem address space (highmem) [ OK ]
Change IOMMU (disabled) [ OK ]
Create new .config file (done) [ OK ]
Execute: make oldconfig (done) [ OK ]
Check kernel header version (Kernel:2.6.7-bigphys == Header:2.6.7-bigphys) [ OK ]
Check kernel functions (Changed: dma64_addr_t) [ OK ]
Compile the kernel (error) [ failed ]

An error has occurred during the compile proces which prevented
the installation from completing.
Take a look at the log file install.log for more informations.
Installation of sk98lin driver module failed.


INSTALL.LOG file
----------------
+++ Install mode: User
+++ Driver version: 8.35.2.3 (Jul-03-2006)
+++ Kernel version 2.6.7-bigphys
+++ smp_count=1
+++ cpu_number=4
+++ kernel_machine=i686
+++ Architecture: i386
+++ Unpack the sources
+++ ====================================
+++ tar xfv sk98lin.tar
2.4/
2.4/h/
2.4/h/skdrv1st.h
2.4/h/skdrv2nd.h
2.4/Makefile
2.4/skge.c
2.4/skproc.c
2.4/skdim.c
2.4/sky2.c
2.4/skethtool.c
2.6/
2.6/h/
2.6/h/skdrv1st.h
2.6/h/skdrv2nd.h
2.6/Makefile
2.6/skge.c
2.6/skproc.c
2.6/skge.c
2.6/skproc.c
2.6/skdim.c
2.6/sky2.c
2.6/skethtool.c
common/
common/h/
common/h/lm80.h
common/h/skaddr.h
common/h/skcsum.h
common/h/skdebug.h
common/h/skerror.h
common/h/skgedrv.h
common/h/skgehw.h
common/h/skgehwt.h
common/h/skgeinit.h
common/h/skgepnm2.h
common/h/skgepnmi.h
common/h/skgesirq.h
common/h/skgetwsi.h
common/h/skqueue.h
common/h/skrlmt.h
common/h/sktimer.h
common/h/sktwsi.h
common/h/sktypes.h
common/h/skversion.h
common/h/skvpd.h
common/h/sky2le.h
common/h/xmac_ii.h
common/skaddr.c
common/skcsum.c
common/skgehwt.c
common/skgeinit.c
common/skgemib.c
common/skgepnmi.c
common/skgesirq.c
common/sklm80.c
common/skqueue.c
common/skrlmt.c
common/sktimer.c
common/sktwsi.c
common/skvpd.c
common/skxmac2.c
common/sky2le.c
common/sk98lin.txt
common/sk98lin.htm
common/sk98lin.4
misc/
misc/Configure.help
misc/Kconfig

+++ Compile the driver
+++ ====================================
make: Entering directory `/usr/src/redhat/BUILD/kernel-2.6.7bigphys'
Building modules, stage 2.
MODPOST
make: Leaving directory `/usr/src/redhat/BUILD/kernel-2.6.7bigphys'
"install.log" 83L, 1547C