Build failure on Solaris (SXDE 1/08) using Clearsilver 0.10.5

Hi, 
The following configure command line leads to build failure on solaris
SXDE 1/08 :

./configure --disable-apache --disable-perl --disable-ruby
--disable-java --disable-csharp --with-python=python2.5

Subsequently make yeilds the following error message is :


make: Fatal error in reader: rules.mk, line 16: Unexpected end of line
seen

line 16 of rules.mk is :

OSTYPE := $(shell uname -s)


Actually any configure command line produces the same result. The make
being used is Sun's make (not GNUmake). Looks like the problem is with
$(shell ....) constructs which are not supported by this make. 

Would be grateful for any fixes/work arounds . Is solaris officially a
supported platform for clearsilver ?

regards
thomas