What happens when the oiio FindBoost.cmake you include becomes too old?
It's not too hard to install newer cmake builds...

On Fri, Jul 12, 2019, 3:28 PM Larry Gritz <[email protected]> wrote:

> Do you think, then, that we should embed a copy of FindBoost.cmake into
> OIIO, so that people with older cmake and newer boost don't have to install
> a whole new cmake? Does it rely on any new cmake features (I mean, how old
> a cmake will run cmake 1.14's FindBoost.cmake)?
>
>
> On Jul 12, 2019, at 11:37 AM, Nathan R <[email protected]> wrote:
>
> It sounds like the FindBoost.cmake module distributed with CMake itself
> had to be updated in order to support Boost 1.70+, so it may just be a
> matter of updating CMake (or grabbing a fresh copy of FindBoost.cmake from
> the repo).
>
> Possibly relevant:
>
> https://cmake.org/pipermail/cmake/2019-April/069324.html
> https://gitlab.kitware.com/cmake/cmake/issues/18865
>
> https://github.com/Kitware/CMake/commit/266808c4130a0b40aed236381707462a9368a1eb#diff-555801259d7df67368f7deab1f9deacd
>
> -Nathan
>
> On 7/12/2019 10:59 AM, Jim Hourihan wrote:
>
>
> Hi Larry, here's the output from a couple of different failures and one
> successful configure. It doesn't seem to matter if I use the release or
> master branch. I've omitted all the non-boost output since those are same
> regardless.
>
> It seems to me find_package() should be picking up the Boost_* variables
> but isn't. Those are definitely not defined in boost's cmake files for
> 1.70.0. I've made sure there are no other copies of boost anywhere on my
> machine (mac 10.14.5) including brew and ports versions.
>
> I'm thinking I should try boost 1.53 and compare its .cmake files against
> 1.70.
>
> Thanks for the help.
>
>   -Jim
>
> On Jul 11, 2019, at 10:42 PM, Larry Gritz <[email protected]> wrote:
>
> I use Boost 1.70 on my Mac (via Homebrew, so it's in /usr/local), and as a
> matter of fact I just tested building against Boost 1.70 on Linux at work
> this week. So I know it works.
>
> Under ordinary circumstances, you shouldn't have to set those things
> individually that you mention below.
>
> It *ought* to be enough to -DBOOST_ROOT=$PREFIX
>
> If things are laid out strangely underneath the prefix, though, you may
> want to use -DBOOST_INCLUDEDIR=/custom/include/dir
> -DBOOST_LIBRARYDIR=/custom/lib/dir
>
> If that doesn't work, can you show us the resulting CMakeCache.txt and
> exactly what errors it prints?
>
> Which version of OIIO are you building? Do you still have the problem with
> master?
>
>
> On Jul 11, 2019, at 7:03 PM, Jim Hourihan <[email protected]> wrote:
>
>
> Hi All, I’m having some weird interaction between OIIO and boost’s cmake
> package files. I have a prefix area (let’s call it  /prefix/area) which I
> install all of OIIO’s dependencies into including boost 1.70.0.
>
> Boost creates files and dirs in /prefix/area/lib/cmake. When I point OIIO
> at the prefix area for building and let it find boost  by itself it does,
> but then fails in OIIO’s externalpackages.cmake line 121. That line is
> attempting to dereference the variable Boost_INCLUDE_DIRS which is set to
> nothing. The weird thing is that find_packages() does successfully say it
> found boost. I assume something has changed in 1.70.0 with how they’re
> writing the cmake files but my cmake-fu is very poor.
>
> To get around it I’m passing the Boost_* variables directly to cmake since
> externalpackages.cmake mercifully allows that as an option.
>
> My questions are:
>
> Any issues with using 1.70.0 or does everybody still use 1.53?
>
> What are the expected values of the Boost_* variables? I’m passing:
>
>              -DBoost_VERSION=1.70.0
>              -DBoost_LIBRARIES='boost_filesystem;boost_system;boost_thread’
>              -DBoost_INCLUDE_DIRS=$PREFIX/include
>              -DBoost_LIBRARY_DIRS=$PREFIX/lib
>
> What should BOOST_ROOT be set to? Seems like OIIO doesn’t care if it’s set.
>
> Thanks!
>
>    -Jim
>
>
>
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> --
> Larry Gritz
> [email protected]
>
>
>
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> --
> Larry Gritz
> [email protected]
>
>
>
>
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