[OE-core] [zeus 18/28] cmake.bbclass: add HOSTTOOLS_DIR to CMAKE_FIND_ROOT_PATH

[Richard Purdie]

On Fri, 2019-10-25 at 23:49 -0700, Armin Kuster wrote:
> From: Michael Ho <Michael.Ho at bmw.de>
> 
> The find_program command will fail if it is used on a tool that is
> listed in
> ASSUME_PROVIDED. This is because these tools are in the hosttools
> directory
> which is not listed in CMAKE_FIND_ROOT_PATH so cmake will not find
> them.
> 
> Adding the directory HOSTTOOLS_DIR to the CMAKE_FIND_ROOT_PATH
> variable fixes
> the initial issue of needing to search for tools in ASSUME_PROVIDED.
> 
> Note that this change alone does not fix the issue because
> find_program will
> by default only look into the subdirectories bin and usr/bin under
> the paths
> in CMAKE_FIND_ROOT_PATH to find the programs and the hosttools
> directory has
> instead the symlinks directly present without these subdirectories.
> 
> Set CMAKE_PROGRAM_PATH to by default include the root directory so
> find_program can search the hosttools directory without needing the
> prefix
> directories.
> 
> Signed-off-by: Ross Burton <ross.burton at intel.com>
> (cherry picked from commit 7847f431cd8db59fce8c9401a603c4b0678ee16d)
> Signed-off-by: Armin Kuster <akuster808 at gmail.com>

Given the fallout in meta-oe, I don't plan to take this.

Cheers,

Richard