Finding Boost in versioned layout on Linux

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Finding Boost in versioned layout on Linux

Mateusz Loskot
Hi,

I know the version layout of Boost build is preferred or
even specific to Windows, but I like it in general, ie. on Linux.
It lazily allows me to get everything built with single command:

b2 variant=debug,release address-model=32,64 --layout=versioned stage

The versioned layout impose some challenges while find_package-ing
at least I've experienced it using FindBoost.cmake from latest CMake 3.12.

For example, running CMake in Linux environment with GCC 5.5.0 for

find_package(Boost 1.65.0 REQUIRED COMPONENTS system)

will attempt to search for

...
-- [ /usr/local/share/cmake-3.12/Modules/FindBoost.cmake:1420 ]
guessed _boost_COMPILER = -gcc55
...
-- [ /usr/local/share/cmake-3.12/Modules/FindBoost.cmake:1760 ]
Searching for SYSTEM_LIBRARY_RELEASE:
boost_system-gcc55-mt-1_69;boost_system-gcc55-mt;boost_system-mt-1_69;boost_system-mt;boost_system
...

The issue is that b2  generated names like

libboost_system-gcc5-mt-d-x64-1_69.a

So, I had to bend CMake this way to find Boost for me:

cmake -DBoost_COMPILER=-gcc5 -DCMAKE_CXX_COMPILER_ARCHITECTURE_ID=x64 ..

I'm not asking any specific questions here.
I just thought that might be helpful to other users of FindBoost.cmake.

Best regards,
--
Mateusz Loskot, http://mateusz.loskot.net
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Re: Finding Boost in versioned layout on Linux

Brad King
On 10/24/2018 01:22 PM, Mateusz Loskot wrote:
> So, I had to bend CMake this way to find Boost for me:
>
> cmake -DBoost_COMPILER=-gcc5 -DCMAKE_CXX_COMPILER_ARCHITECTURE_ID=x64 ..

See these issues:

https://gitlab.kitware.com/cmake/cmake/issues/17701
https://gitlab.kitware.com/cmake/cmake/issues/17702

-Brad
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Re: Finding Boost in versioned layout on Linux

Mateusz Loskot
On Wed, 24 Oct 2018 at 22:17, Brad King <[hidden email]> wrote:
> On 10/24/2018 01:22 PM, Mateusz Loskot wrote:
> > So, I had to bend CMake this way to find Boost for me:
> >
> > cmake -DBoost_COMPILER=-gcc5 -DCMAKE_CXX_COMPILER_ARCHITECTURE_ID=x64 ..
>
> See these issues:
>
> https://gitlab.kitware.com/cmake/cmake/issues/17701
> https://gitlab.kitware.com/cmake/cmake/issues/17702

Yes, I'm aware [1] of these, but thank you for reminder.
I meant this post as a work around related to #17701

[1] https://gitlab.kitware.com/cmake/cmake/issues/17701#note_398070

Best regards,
--
Mateusz Loskot, http://mateusz.loskot.net
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Mateusz Loskot
http://mateusz.loskot.net