gendata is a program that is used by the ICU team to build the +source file testdata.cpp, which contains the expected results of running +letest. Unless you have changed your copy of the LayoutEngine and want +to validate the changes on other platforms, there's no reason for you +to run this program.
+(The ICU team first runs a Windows application which uses the ICU
+LayoutEngine to display the text that letest uses. Once it has been
+verified that the text is displayed correctly, gendata is run to produce
+testdata.cpp, and then letest is run on Windows to verify that letest
+still works with the new data.)
+
On Windows, the layout project should be listed as a dependency of +all, so layout will build when you build all. If it doesn't for some +reason, just select the layout project in the project toolbar and build +it.
+On UNIX systems, you need to add the "--enable-layout=yes" option +when you invoke the runConfigureICU script. When you've done that, +layout should build when you do "make all install"
+To build letest on Windows, just open the letest project in
+<icu>\source\test\letest and build it. On UNIX systems, connect to
+<top-build-dir>/test/letest and do "make all"
+
Download the 1.3 version of the JDK from the IBM developerWorks Java technology zone
+page. From this page, follow the "Tools and products" link on the left
+hand side, and then the link for the "IBM Developer Kit for Linux", or
+the "IBM Developer Kit for Windows(R), Release 1.3.0". You'll need to
+register with them if you haven't downloaded before. Download and
+install the "Runtime Environment Package." You'll need two fonts from
+this package. If you've let the installer use it's defaults, the fonts
+will be in C:\Program Files\IBM\Java13\jre\lib\fonts. The files you want
+are "LucidaSansRegular.ttf" and "Thonburi.ttf" Copy these font files to
+the directory from which you'll run letest.
+
Next is the Hindi font. Go to the NCST site and download
+raghu.ttf. Be sure to look at the README
+file before you download the font. You can download raghu.ttf into the
+directory from which you'll run letest.
+
There's still one more font to get, the Code2000 Unicode font.Go to
+James Kass' Unicode
+Support In Your Browser page and click on the link that says "Click
+Here to download Code2000 shareware demo Unicode font." This will
+download a .ZIP file which contains CODE2000.TTF and CODE2000.HTM.
+Expand this .ZIP file and put the CODE2000.TTF file in the directory
+from which you'll run letest.
+
Note: The Code2000 font is +shareware. If you want to use it for longer than a trial period, you +should send a shareware fee to James. Directions for how to do this are +in CODE2000.HTM.
+That's it! Now all you have to do is run letest (CTRL+F5 in Visual +C++, or "./letest" in UNIX) If everything's OK you should see +something like this:
+Test 0, font = raghu.ttf... passed.+ +
+ Test 1, font = CODE2000.TTF... passed.
+ Test 2, font = LucidaSansRegular.ttf... passed.
+ Test 3, font = Thonburi.ttf... passed.