Hi all, I wonder why NOMINMAX is defined globally for _all_ platforms in cw-tools.jam. # Some language related options flags cw C++FLAGS : -DNOMINMAX ; This produces warnings for some regressions due to redefinitions in the code! Aside from that, IMO it doesn't make sense to define NOMINMAX on other platforms than windows, no? If nobody objects, I would like to remove this line to see what happens. Stefan