This example demonstrates running an instance of ICU 1.8.1. together with a current version of ICU. It only tests u_getVersion and several collation APIs.
Generally, one should be able to simultaneously use one or more versions of ICU 2.0 or higher and one version of ICU 1.8.1 or lower.
Linux:
To make it work, you should build and install both the current ICU and ICU 1.8.1. Put both data libraries to wherever ICU_DATA points (usually it is $(prefix)/share/icu/$(icu_version)/). Copy libicuuc.so.18* and libicui18n.so.18* to $(prefix)/lib directory, together with current libraries).
Change $ICU_PREFIX to point to the current installation, and $ICU_LEGACY to point to 1.8.1 installation. $ICU_LEGACY is needed solely to access the 1.8.1 include directory through $LEGACY_INCLUDE variable, so if you want to move the 1.8.1. include directory, you can set $LEGACY_INCLUDE directly to that directory.
Run make check. You should get two different libraries running at the same time.
