The build script included here is largely a copy of the existing
build script for Mac, which was itself ported from the build script
for Windows, so its usage is similar.
The build products included here represent Boost version
1.70.0, the same version currently used on Windows and Mac.
Note that this does *not* include the update to the module rules
that would put this new set of libraries into use with engine builds.
That will be done in a subsequent change, since it will have to be
combined with a rebuild of USD, which is the main consumer of
the Boost libraries.
#rb michael.balzer
#preflight skip
[CL 19546691 by matt johnson in ue5-main branch]
The build script included here is largely a port of the existing
build script for Windows, so its usage is similar. The one detail
that is unique to the Mac build script is that since it does not
currently appear to be possible to have the Boost build itself
generate universal binaries, we therefore have to run a build
for each of x86_64 and arm64 architectures and then combine
them into a set of universal binaries ourselves in a post-process.
The build products included here represent Boost version
1.70.0, the same version currently used on Windows.
Note that this does *not* include the update to the module rules
that would put this new set of libraries into use with engine builds.
That will be done in a subsequent change, since it will have to be
combined with a rebuild of USD, which is the main consumer of
the Boost libraries.
#rb michael.balzer, will.damon
#preflight 621eda79b20446f11c7ed147
[CL 19225365 by matt johnson in ue5-main branch]
The default version of the compiler toolchain for the engine on Windows is
currently Visual Studio 2019 and MSVC 1.42, so this change sets up Boost
to build using that toolchain, and it adds versions of the compiled binaries
built using that toolchain.
Note that this change does *not* update the Boost Build.cs to look for these
new "vc142" versions of the libraries, nor does it remove the existing "vc141"
versions of the libraries. USD has a link dependency on Boost, so a subsequent
change will rebuild the USD libraries to update the dependencies, after which
it will be safe to remove the old "vc141" Boost libraries.
#rb michael.balzer
#fyi jeanmichel.dignard
#preflight 6116ff37afd67e00019dc839
[CL 17180084 by matt johnson in ue5-main branch]
