Im trying to compile mod_opal here but I cant get it to work. Ive tried the buildopal.sh script, the manual install, sacrificial offerings, etc. to no avail. I was getting an error about PTLib being too old, so I grabbed PTLib 2.10.7 source here: http://www.linuxfromscratch.org/blfs/view/svn/general/ptlib.html Trying to compile it, I get a No operating system selected error. Ive pasted in the make attempt below, Distro is CentOS 5.8. It looks like a lot of other folks have had/are having problems with mod_opal and ptlib, but Im not seeing much in the way of solutions. Has anyone else gotten past this problem? Any pointers? (no pun intended) [root@Tyrion ptlib]# make Setting default PTLIBDIR to /root/ptlib make[1]: Entering directory `/root/ptlib' make[2]: Entering directory `/root/ptlib' make[3]: Entering directory `/root/ptlib' make[3]: Leaving directory `/root/ptlib' make[2]: Leaving directory `/root/ptlib' set -e; if test -d /root/ptlib/src ; then make -C /root/ptlib/src optshared; fi; if test -d /root/ptlib/plugins ; then make -C/root/ptlib/plugins optshared; fi; make[2]: Entering directory `/root/ptlib/src' make[3]: Entering directory `/root/ptlib/src' [CC] ptclib/psasl.cxx In file included from /root/ptlib/include/ptlib/object.h:44, from /root/ptlib/include/ptlib.h:47, from ptclib/psasl.cxx:35: /root/ptlib/include/ptlib/unix/ptlib/platform.h:555:2: error: #error No operating system selected. /root/ptlib/include/ptlib/mutex.h:109: error: âPThreadIdentifierâ does not name a type /root/ptlib/include/ptlib/thread.h:292: error: âPThreadIdentifierâ does not name a type /root/ptlib/include/ptlib/thread.h:293: error: âPThreadIdentifierâ does not name a type /root/ptlib/include/ptlib/thread.h:403: error: âPThreadIdentifierâ does not name a type /root/ptlib/include/ptlib/syncthrd.h:326: error: âPThreadIdentifierâ was not declared in this scope /root/ptlib/include/ptlib/syncthrd.h:326: error: template argument 1 is invalid /root/ptlib/include/ptlib/syncthrd.h:326: error: template argument 3 is invalid /root/ptlib/include/ptlib/syncthrd.h:326: error: template argument 4 is invalid /root/ptlib/include/ptclib/cypher.h:382: error: âPUInt32lâ does not name a type make[3]: *** [/root/ptlib/lib_linux_x86_64/obj/psasl.o] Error 1 make[3]: Leaving directory `/root/ptlib/src' make[2]: *** [optshared] Error 2 make[2]: Leaving directory `/root/ptlib/src' make[1]: *** [optshared] Error 2 make[1]: Leaving directory `/root/ptlib' make: *** [default] Error 2 Many thanks, Phil Quesinberry Q Systems Engineering, Inc. Electronic Controls and Embedded Systems Development (410) 969-8002 http://www.qsystemsengineering.com