(Windows: build as x86, Release otherwise you will have to set 'CFG' differently below.)
*NOTE* You should do a full rebuild after any data changes.
+1a. If you didn't download from Subversion, you will also need the "icu4c-*-data.zip" file. Unpack this file and replace the icu/source/data directory's contents with the contents of the data directory from the zip file.
2. Step 2 depends on whether you are on a Windows or a Unix-type
*Linux*
$icu4c_build is the ICU4C root build directory,
- which is $icu4c_root/source in an in-source build
+ which is $icu4c_root/source in an in-source build.
+ (in other words, $icu4c_build is where you ran runConfigureICU or configure)
-2c. On the command line, cd to $icu4c_build
+2c. On the command line, cd to $icu4c_build/data
2d. Do
make JAR=$jdk_bin/jar ICU4J_ROOT=$icu4j_root icu4j-data-install