powertweak make fails w/ parser.h

[edj]

Trying to install powertweak.  Configure went well (I think).  However, 
make crapped out  with:

profile.c:14: parser.h: No such file or directory
make[2]: *** [profile.lo] Error 1
make[2]: Leaving directory 
`/home/edj/downloads/powertweak/src/libpowertweak'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/edj/downloads/powertweak/src'
make: *** [all-recursive] Error 1

parser.h exists in /usr/include/libxml2/libxml; also in /usr/include/libxml 
(???).   At the end of the configure output is:

XML libs:       -L/usr/lib -lxml2 -lz -lm
XML cflags:     -I/usr/include/libxml2

Any advice appreciated.  Thanks.
-- 
Ed Jabbour