As mentioned in the sunpro experts thread, I've been building Boost on the Sun Studio 11 compiler (5.8) with a slightly different v1 jamfile which is based on the one Simon Atanasyan published in his blog. I took out a couple of lines that caused problem when building with Python... Anyway, the main changes are: - It defaults to using the compiler-supplied STLport library. From what I understand, Sun doesn't support/isn't really interested in fixing problems that occur in conjunction with the old RogueWave "STL" they also ship for backwards compatibility reasons. - It switches on standard C++ temp variable lifetimes. Normally the SUN compiler uses scoping rules that are backward-compatible with ancient versions of the compiler but these produce "interesting" results with modern C++ code. - Several other flags that supposedly make the compiler grok templates better. The attached patch is against the 1.34 RC CVS version but should apply cleanly to 1.33.x as well. I'd appreciate if someone with the necessary priviledges could commit it. I'll try to provide the necessary patches for v2 in the next few days as well. Regards, Timo