Hello, Is there any way to determine at runtime (of a compiled program) whether the libpthread that it is linked against was compiled with FLOATING_STACKS? Or, more to the point - is able to use the *context functions? johannes -- http://www.sipsolutions.de/ GnuPG key: http://www.sipsolutions.de/keys/JohannesBerg.asc Key-ID: 9AB78CA5 Johannes Berg <johannes@sipsolutions.de> Fingerprint = AD02 0176 4E29 C137 1DF6 08D2 FC44 CF86 9AB7 8CA5