after having done aclocal; automake; autoconf I try "./configure $flags --prefix=/opt/OpenCASCADE6.3.0" with $flags as defined in "$CASROOT/doc/Overview/index.htm" but I get the following errors:
checking pthread.h usability... no
checking pthread.h presence... no
checking for pthread.h... no
configure: error: Posix threads required
However, glibc-headers (containing /usr/include/pthread.h) is installed. So as glibc-devel.
My OS is Fedora 11.