On Nov 11, 2020, at 11:02 PM, Marshall Clow <mclow.lists@gmail.com> wrote:

The second release candidates for the 1.75.0 beta release are now available at:

<https://dl.bintray.com/boostorg/beta/1.75.0.beta1/source/>

The SHA256 checksums are as follows:

3f01d3e5dc822e151892040d4667e364ea808d208d2e49cc7a1802bd4da3d4cc  boost_1_75_0_b1_rc2.7z
9b75a80f845d4ae312e3c9151ffdfe3fed450973095e0a15c68d0be394f2f2df  boost_1_75_0_b1_rc2.tar.bz2
123519d4b056fbbd69e452db880abe2c7e55f21779d44a4d6b6c714d5c13c3ee  boost_1_75_0_b1_rc2.tar.gz
b73e01d22d5b3d2ff82f14a371e3974fab30448bf6ff5ac8b9c829539a19c2d7  boost_1_75_0_b1_rc2.zip

As always, the release managers would appreciate it if you download the
candidate of your choice and give building it a try. Please report both
success and failure, and anything else that is noteworthy.

I have successfully built the libraries on Ubuntu 18.04

With gcc 7.0.5 with the following configurations:
* cxxstd=03
* cxxstd=11
* cxxstd=14
* cxxstd=17

And with Apple clang tip-of-tree with the following configurations:
* cxxstd=03
* cxxstd=11
* cxxstd=14
* cxxstd=17
* cxxstd=2a

— Marshall