I'm currently working on protobuf-3.0.0's cmake scripts, and I've hit a bit of a chicken and egg problem.
There is an examples directory containing a CMakeLists.txt which we would like to work as both a standalone examples directory and include as a sub directory of the full build. For obvious reasons, the CMakeLists.txt file contains a call to find_package(protobuf). I can call find_package(protobuf HINTS ${CMAKE_BINARY_DIR}) outside of the examples/CMakeLists.txt file to ensure that we've already found the correct version, but the problem is that the protobuf-config.cmake file includes the export-generated file protobuf-targets.cmake, as well as implementing some custom functions that we want to show off as part of the examples. The obvious solution to me was to use the export command to generate protobuf-targets.cmake, but there are 2 problems. First, export(EXPORT) doesn't create a file until generation time, but I can get around this using export(TARGETS). The second is that, reading CMP0024, this appears to be not garunted behavior, and actively discouraged. What would be the suggested way to handle this?
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