Hi, I have VC++ 7.1 and VC++ 8.0 installed on my laptop. I'd like to use Boost with both VC++. So, as I understand I need to build Boost twice, with VC++ 7.1 and with VC++ 8.0. Documentation does not say anything about such case. Now, the question is, should I install both targets to separate directories (different --prefix, e.g. C:\Boost-vc-8.0 and C:\Boost-vc-7.1) or can I install then in common dir C:\Boost ? AFAIK, libs names include toolset name e.g. libboost_date_time-vc71-mt-gdp.lib ^^^^^ So, I suppose I can install both targets into common place and I'll have following files in C:\Boost\lib: libboost_date_time-vc71-mt-gdp.lib and libboost_date_time-vc80-mt-gdp.lib Are my assumptions correct? Or it's more recommended to install separate targets (builds made with different toolsets) to separate folders? Thanks in advance Best regards -- Mateusz Łoskot http://mateusz.loskot.net