% grep libicu /var/db/pkg/dev-libs/libical-2.0.0-r1/NEEDED.ELF.2 X86_64;/usr/lib64/libical.so.2.0.0;libical.so.2;;libpthread.so.0,libicuuc.so.58,libicui18n.so.58,libc.so.6;x86_64
From CMakeLists.txt: # libicu is highly recommended for RSCALE support # libicu can be found at http://www.icu-project.org # RSCALE info at http://tools.ietf.org/html/rfc7529 find_package(ICU) if(ICU_FOUND) set(HAVE_LIBICU 1) if(ICU_MAJOR_VERSION VERSION_GREATER 50) set(HAVE_ICU_DANGI TRUE) else() set(HAVE_ICU_DANGI FALSE) endif() endif() if(ICU_I18N_FOUND) set(HAVE_LIBICU_I18N 1) endif()
commit bb918c70ac7d1dae5df74af42e033ef0f5eadd69 Author: Lars Wendler <polynomial-c@gentoo.org> Date: Fri Nov 11 08:16:09 2016 dev-libs/libical: Revbump to add dev-libs/icu to RDEPEND (bug #599246). Package-Manager: portage-2.3.2