Hi,
yes of course you need leptonica to be "installed" before configure and install tesseract to use it in applications.
I have a similar problem to build tesseract r724 on windows:
I checked out full r724 from repository,
I get when running configure in ming+msys system terminal:
"checking for pixCreate in -llept... no
configure: leptonica library missing"
on windows, nevertheless I copied leptonica .dll and .lib files to Windows/System directory,
Can anybody help how to resolve this problem and configure and build library on Windows ?
Thanks.