The one canonical variable to set, according to modern CMake style, is:
OpenImageIO_ROOT
The plethora of other names, FOO_DIR, FOO_ROOT_DIR, etc., FOO_LOCATION, etc.,
are all relics of early CMake days when there wasn't an established convention
and everybody did it differently.
And the place to set it is the root directory in which you can find the bin,
include, lib. Like this:
set(OpenImageIO_ROOT ${BREW_ROOT}/openimageio/2.3.16.0)
CMake itself understand that it will look for config files specifically in
{root}/lib/cmake/{projectname}
> On Jun 13, 2022, at 4:15 AM, Dariusz <[email protected]> wrote:
>
> Hey
>
> I'm working on a Cmake script that would allow me to build 2 binaries for my
> app using 2 different architectures.
>
> For this I've decided to have 2 Brew's on my system. I've gone with brew as
> vcpkg does not support openimageio for arm, or intel. Cant remember.
> 1. Intel
> 2. Arm
>
> Now this approach worked with openSSL, my flags can build both intel and arm
> bundle, but when it comes to openimageio I cant include it no matter what I
> try :/
>
> In general I have something like
> ```
> if(FLAG_BUILD_INTEL)
> set(BREW_ROOT "/usr/local/Cellar/")
> set(CMAKE_OSX_ARCHITECTURE "x86_64" CACHE INTERNAL "" FORCE)
> else()
> set(BREW_ROOT "/opt/homebrew/Cellar/"
> set(CMAKE_OSX_ARCHITECTURE "arm64" CACHE INTERNAL "" FORCE)
> endif()
> ```
>
> then I try to do
> ```
> set(OpenImageIO_ROOT_DIR
> ${BREW_ROOT}openimageio/2.3.16.0/lib/cmake/OpenImageIO)
> and then
> find_package(OpenImageIO CONFIG REQUIRED)
>
> and 50x other things. No matter what I do, he either finds openimage but set
> it to "FALSE" or he finds it but when I compile I end up with:
>
> Undefined symbols for architecture arm64. Or x86_64.
> No matter what I do when I do
>
> message(${OpenImageIO_DIR})
>
> it is always the same directory. I can not tell my cmake, to use openimage
> from either Brew Intel or Brew ARM.
>
> Its weird that even as is, my app wont compile for arm either, (it should)
> but for now I've no idea how to bite it.
>
> Has any1 done any cross compiles? How did u solve arm/intel targetting?
>
> Regards
> Dariusz
>
> --
> DARIUSZ MAKOWSKi
> CGI-Photographer
> 07 590 530 854
> [email protected] <mailto:[email protected]>
> www.dariuszmakowski.com <http://www.dariuszmakowski.com/>
>
>
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--
Larry Gritz
[email protected]
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