Lasse Kärkkäinen wrote:
Hi,
There are two questions for which I have found no answers:
1. When exactly are -mt (multithreaded) versions of the libraries needed?
That depends on the compiler/platform. * If the compiler has multiple runtime libraries - thread safe or not - then you should always use the Boost library option that matches the runtime used (examples include msvc, borland etc, maybe IBM xlc as well). * If the compiler has a single runtime - usually thread safe - for example gcc on Linux - then you can use either depending upon whether your application uses threads or not. For recent Boost releases, and for most versions of Boost installed by the Linux distro, there is only one version of the libraries anyway (the thread safe version).
2. Boost.System was added in 1.35 and apparently some of the old libraries also depend on it in new Boost versions. Are the inter-library dependencies of Boost actually documented somewhere, or does one need to guess?
There's not a central dependency tree anywhere: but individual libraries most certainly should document what they depend on. HTH, John.