In cmake 2.x there were a man page came(1) with the cmake man page. Since 3.1 (I'm not sure what was in 3.0) it installs only ReST docs without building them to man. IMO it would be nice so gentoo could optionally (with a USE) build those docs into man pages. Reproducible: Always
USE="doc" emerge -1 =dev-util/cmake-3.2.3 equery f cmake | grep man/usr/share/man ... /usr/share/man/man1 /usr/share/man/man1/ccmake.1.bz2 /usr/share/man/man1/cmake-gui.1.bz2 /usr/share/man/man1/cmake.1.bz2 /usr/share/man/man1/cpack.1.bz2 /usr/share/man/man1/ctest.1.bz2 /usr/share/man/man7 /usr/share/man/man7/cmake-buildsystem.7.bz2 /usr/share/man/man7/cmake-commands.7.bz2 /usr/share/man/man7/cmake-compile-features.7.bz2 /usr/share/man/man7/cmake-developer.7.bz2 /usr/share/man/man7/cmake-generator-expressions.7.bz2 /usr/share/man/man7/cmake-generators.7.bz2 /usr/share/man/man7/cmake-language.7.bz2 /usr/share/man/man7/cmake-modules.7.bz2 /usr/share/man/man7/cmake-packages.7.bz2 /usr/share/man/man7/cmake-policies.7.bz2 /usr/share/man/man7/cmake-properties.7.bz2 /usr/share/man/man7/cmake-qt.7.bz2 /usr/share/man/man7/cmake-toolchains.7.bz2 /usr/share/man/man7/cmake-variables.7.bz2