[CMake] Is this the proper way to define a package config?

[Robert Maynard]

As far as I am aware the Boost find module doesn't support writing out
import targets.

As far as setting up interface libraries for imported tagets you want to
use the
IMPORTED_LINK_INTERFACE_LIBRARIES and
IMPORTED_LINK_INTERFACE_LIBRARIES_<CONFIG> properties.

Here is an example:

set_target_properties(Filters PROPERTIES
  IMPORTED_LINK_INTERFACE_LIBRARIES_DEBUG
"Common;/usr/local/lib/libzmq.3.dylib"
)

Note that Common in this example is another imported target.

On Thu, Oct 23, 2014 at 12:53 PM, Robert Dailey <rcdailey.lists at gmail.com>
wrote:

> Thanks for the reply!
>
> Basically the boost library I have is precompiled and in my own unique
> structure. I do not plan to distribute the CMake scripts I write, they
> are for personal / internal usage only.
>
> You suggested a find module, but will this also generate a custom
> target for boost? That's important so that when I do
> target_link_libraries(), I can pass in "boost" and everything is
> handled for me. I do not want to be working with libs & header files
> directly in each executable or library I define that has a dependency
> on boost.
>
> Thanks again.
>
> On Thu, Oct 23, 2014 at 4:59 AM, Johannes Zarl <johannes.zarl at jku.at>
> wrote:
> > Hi,
> >
> > Assuming you are not a boost developer / your changes won't be
> upstreamed,
> > then creating a BoostConfig.cmake file won't do you much good. If
> someone wants
> > to use your project, he/she will have to patch the locally installed
> boost
> > version to include a BoostConfig.cmake file.
> >
> > You might want to have a look into the FindBoost[1] module of cmake.
> >
> > XXXConfig.cmake files are intended to be written by the creator of a
> package,
> > FindXXX.cmake packages are intended as a workaround when a package does
> not
> > contain an XXXConfig.cmake file and are usually written by a consumer of
> a
> > package.
> >
> > HTH,
> >   Johannes
> >
> > [1] http://www.cmake.org/cmake/help/v3.0/module/FindBoost.html
> >
> > On Friday 17 October 2014 00:18:34 Robert Dailey wrote:
> >> I have a local package of boost built on Windows. It is always
> >> relative to the root of my project at a consistent structure and
> >> location. I wanted to define an import target for this and thought it
> >> might be best to define a BoostConfig.cmake package config file at the
> >> root of the boost lib directory. Is this the right approach? The code
> >> is below.
> >>
> >> Note that I do not have this working just yet because I don't know how
> >> to properly setup the interface link libraries. Could use some
> >> guidance here too... thanks.
> >>
> >> add_library( Boost STATIC IMPORTED GLOBAL )
> >>
> >> file( GLOB boost_debug_libs
> ${CMAKE_CURRENT_LIST_DIR}/lib/win32/debug/*.lib
> >> ) file( GLOB boost_release_libs
> >> ${CMAKE_CURRENT_LIST_DIR}/lib/win32/release/*.lib )
> >>
> >> set_target_properties( Boost PROPERTIES
> >>     IMPORTED_LOCATION_DEBUG lib/win32/debug
> >>     IMPORTED_LOCATION_RELEASE lib/win32/release
> >>     INTERFACE_INCLUDE_DIRECTORIES include
> >>     INTERFACE_LINK_LIBRARIES
> >>         $<$<CONFIG:Debug>:${boost_debug_libs}>
> >>         $<$<CONFIG:Release>:${boost_release_libs}>
> >> )
> >>
> >> set( Boost_INCLUDE_DIRS include )
> >> set( Boost_LIBRARIES Boost )
> >
> > --
> >
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