[CMake] on find_package and building dependencies

[Ryan Lewis]

Thanks guys, I discovered this experimentally myself.

-rhl



On Tue, Jan 3, 2012 at 1:29 PM, Eric Noulard <eric.noulard at gmail.com> wrote:
> 2012/1/3 Alexander Neundorf <a.neundorf-work at gmx.net>:
>>> you basically want:
>>> set(CMAKE_FIND_ROOT_PATH "/you/local/install/dir")
>>> before calling find_package(...)
>>
>> No, please don't.
>> CMAKE_FIND_ROOT_PATH is intended for cross-compiling, to tell cmake where the
>> root of the target file system is located.
>
> Ok my bad.
>
> Sorry Alex (twice in fact) for giving wrong advice concerning this.
>
> I wasn't aware of the fact that CMAKE_FIND_ROOT_PATH was **reserved**
> for cross-compiling.
>
>> Use CMAKE_PREFIX_PATH instead. It can contain a list of directories, and
>> find_program(), find_file(), find_path(), find_package() and find_library()
>> append bin/, include/ and lib/ respectively to each of the directories listed
>> there.
>> The directories resulting from CMAKE_PREFIX_PATH are checked before all PATHS
>> and HINTS directories.
>>
>> E.g. if you have stuff inside /your/local/install/dir and /some/other/dir, do
>> $ export CMAKE_PREFIX_PATH=/your/local/install/dir:/some/other/dir
>> $ cmake ...args
>>
>> or set it directly as a cmake variable within your CMakeLists.txt.
>>
>> Alex
>
>
>
> --
> Erk
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