[CMake] CPack: avoid creating unnecessary man dirs

[Alex Turbov]

Use `CPACK_RPM_EXCLUDE_FROM_AUTO_FILELIST_ADDITION` to add a man's dir to
'exclude' list, so RPM package wouldn't have a dir, but files from it... so
it wouldn't conflict w/ `filesystem` package.

On Sun, Oct 30, 2016 at 12:14 AM, Robert J. Hansen <rjh at sixdemonbag.org>
wrote:

> I'm migrating a project from Autotools to CMake.  So far it's been a
> good experience save for installing manpages.
>
> I'm using include(GNUInstallDirs) to help make the migration easier.  In
> my manpage subdir I have the following CMakeLists.txt:
>
> set(MAN_NAMES nsrlsvr.1 nsrlupdate.1)
> add_custom_target(man ALL DEPENDS ${MAN_NAMES})
> install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/nsrlsvr.1 DESTINATION
> ${CMAKE_INSTALL_MANDIR}/man1/)
> install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/nsrlupdate.1 DESTINATION
> ${CMAKE_INSTALL_MANDIR}/man1/)
>
> This seems to work just fine for a "make install", and it successfully
> generates RPMs with a "make package".  However, those RPMs are
> uninstallable on a Fedora system:
>
> Error: Transaction check error:
>   file /usr/share/man from install of nsrlsvr-1.6.1-1.x86_64 conflicts
> with file from package filesystem-3.2-37.fc24.x86_64
>   file /usr/share/man/man1 from install of nsrlsvr-1.6.1-1.x86_64
> conflicts with file from package filesystem-3.2-37.fc24.x86_64
>
> Apparently, CMake is trying to create dirs even if they already exist.
> Is there any way to suppress this?  What's the best way to address this?
>
> (The full source tree, along with all the CMakeLists.txt files, is
> available at https://github.com/rjhansen/nsrlsvr/ )
> --
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