Cmake overriding find_package

[petersteneteg]

In

openexr/CMakeLists.txt

Lines 28 to 36 in 2600cdc

	# An "official" way to make this a super-project
	# basically overrides the find_package to not find anything
	# for stuff we're including locally
	set(as_subproject IlmBase OpenEXR)
	macro(find_package)
	if(NOT "${ARGV0}" IN_LIST as_subproject)
	_find_package(${ARGV})
	endif()
	endmacro()

You override find_package, that is not supported officially by cmake and might be removed in future versions, and one can only do so once, hence if there are more than one project doing it in the same build it will fail.

A better solution is to have your subproject create a "dummy" FindFoo.cmake and put that in a directory at the beginning of the CMAKE_MODULE_PATH, then that dummy package will get found by the find_package(Foo) and then target_link_libraries will work as normally.

I can provide a PR if you want.

[meshula]

A PR would be nice to see, thanks!

[cary-ilm]

Closing, as this seems to have been addressed by #775.