On Thu, Apr 16, 2026 at 9:30 AM Marshall Clow via Boost < boost@lists.boost.org> wrote:
The first release candidates for the 1.91.0 release are now available at: <https://archives.boost.io/release/1.91.0/source/>
The SHA256 checksums are as follows:
9446c37fd86fecd95254ebe5d368a66ef9b09cec4592b2746979076657e24e65 boost_1_91_0_rc1.7z 5734305f40a76c30f951c9abd409a45a2a19fb546efe4162119250bbe4d3a463 boost_1_91_0_rc1.tar.gz 69c6f32fbda3c478fb310ec251e6699e5e584dbc71afb5425c2f6e98c9540a77 boost_1_91_0_rc1.zip de5e6b0e4913395c6bdfa90537febd9028ea4c0735d2cdb0cd9b45d5f51264f5 boost_1_91_0_rc1.tar.bz2
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.
-- The Release managers
Looks good for windows/visual studio. toolset arch compile Link Execute msvc-14.1 32 X X X msvc-14.1 64 X X X msvc-14.2 32 X X X msvc-14.2 64 X X X msvc-14.3 32 X X X msvc-14.3 64 X X X msvc-14.5 32 X X X msvc-14.5 64 X X X Compile means that the b2 command completed without errors Link means that visual studio was able to link a sample executable to a library (libboost_thread-vcXXX-mt[-gd]-1_XX.lib) generated Execute means that the linked program executed without errors. Final output is here: https://gist.github.com/teeks99/e5a5f48169b7e8b6e0fed24a5f4d2503 Tom