Hi, The interprocess test compilation fails on solaris 9. Error is thrown for solaris atomic operations. Following the command used and log - ./bjam ./libs/interprocess/test/ ...patience... ...patience... ...found 1953 targets... ...updating 473 targets... common.mkdir bin.v2/libs/interprocess common.mkdir bin.v2/libs/interprocess/test common.mkdir bin.v2/libs/interprocess/test/intersegment_ptr_test.test common.mkdir bin.v2/libs/interprocess/test/intersegment_ptr_test.test/gcc-3.4.2 common.mkdir bin.v2/libs/interprocess/test/intersegment_ptr_test.test/gcc-3.4.2/debug common.mkdir bin.v2/libs/interprocess/test/intersegment_ptr_test.test/gcc-3.4.2/debug/threading-multi gcc.compile.c++ bin.v2/libs/interprocess/test/intersegment_ptr_test.test/gcc-3.4.2/debug/threading-multi/intersegment_ptr_test.o In file included from ./boost/interprocess/detail/managed_open_or_create_impl.hpp:20, from ./boost/interprocess/detail/managed_multi_shared_memory.hpp:30, from libs/interprocess/test/intersegment_ptr_test.cpp:17: ./boost/interprocess/detail/atomic.hpp: In function `boost::uint32_t boost::interprocess::detail::atomic_add32(volatile boost::uint32_t*, boost::uint32_t)': ./boost/interprocess/detail/atomic.hpp:331: error: invalid conversion from `volatile uint32_t*' to `uint32_t*' ./boost/interprocess/detail/atomic.hpp:331: error: initializing argument 1 of `uint32_t atomic_add_32_nv(uint32_t*, int32_t)' ./boost/interprocess/detail/atomic.hpp: In function `boost::uint32_t boost::interprocess::detail::atomic_cas32(volatile boost::uint32_t*, boost::uint32_t, boost::uint32_t)': ./boost/interprocess/detail/atomic.hpp:341: error: `atomic_cas_32' undeclared (first use this function) ./boost/interprocess/detail/atomic.hpp:341: error: (Each undeclared identifier is reported only once for each function it appears in.) ./boost/interprocess/detail/atomic.hpp: In function `boost::uint32_t boost::interprocess::detail::atomic_inc32(volatile boost::uint32_t*)': ./boost/interprocess/detail/atomic.hpp:347: error: invalid conversion from `volatile uint32_t*' to `uint32_t*' ./boost/interprocess/detail/atomic.hpp:347: error: initializing argument 1 of `uint32_t atomic_add_32_nv(uint32_t*, int32_t)' ./boost/interprocess/detail/atomic.hpp: In function `boost::uint32_t boost::interprocess::detail::atomic_dec32(volatile boost::uint32_t*)': ./boost/interprocess/detail/atomic.hpp:353: error: invalid conversion from `volatile uint32_t*' to `uint32_t*' ./boost/interprocess/detail/atomic.hpp:353: error: initializing argument 1 of `uint32_t atomic_add_32_nv(uint32_t*, int32_t)' "g++" -ftemplate-depth-128 -O0 -fno-inline -Wall -g -pthreads -fPIC -DBOOST_ALL_NO_LIB=1 -DBOOST_THREAD_POSIX -DBOOST_THREAD_USE_DLL=1 -I"." -c -o "bin.v2/libs/interprocess/test/intersegment_ptr_test.test/gcc-3.4.2/debug/threading-multi/intersegment_ptr_test.o" "libs/interprocess/test/intersegment_ptr_test.cpp" ...failed gcc.compile.c++ bin.v2/libs/interprocess/test/intersegment_ptr_test.test/gcc-3.4.2/debug/threading-multi/intersegment_ptr_test.o... common.mkdir bin.v2/libs/thread/build/gcc-3.4.2/debug common.mkdir bin.v2/libs/thread/build/gcc-3.4.2/debug/threading-multi common.mkdir bin.v2/libs/thread/build/gcc-3.4.2/debug/threading-multi/pthread gcc.compile.c++ bin.v2/libs/thread/build/gcc-3.4.2/debug/threading-multi/pthread/thread.o gcc.compile.c++ bin.v2/libs/thread/build/gcc-3.4.2/debug/threading-multi/pthread/exceptions.o gcc.compile.c++ bin.v2/libs/thread/build/gcc-3.4.2/debug/threading-multi/pthread/once.o gcc.link.dll bin.v2/libs/thread/build/gcc-3.4.2/debug/threading-multi/libboost_thread-gcc34-mt-d-1_39.so.1.39.0 ...skipped intersegment_ptr_test for lack of intersegment_ptr_test.o... ...skipped intersegment_ptr_test.run for lack of intersegment_ptr_test... common.mkdir bin.v2/libs/interprocess/test/intrusive_ptr_test.test common.mkdir bin.v2/libs/interprocess/test/intrusive_ptr_test.test/gcc-3.4.2 common.mkdir bin.v2/libs/interprocess/test/intrusive_ptr_test.test/gcc-3.4.2/debug common.mkdir bin.v2/libs/interprocess/test/intrusive_ptr_test.test/gcc-3.4.2/debug/threading-multi gcc.compile.c++ bin.v2/libs/interprocess/test/intrusive_ptr_test.test/gcc-3.4.2/debug/threading-multi/intrusive_ptr_test.o In file included from ./boost/interprocess/detail/managed_open_or_create_impl.hpp:20, from ./boost/interprocess/managed_shared_memory.hpp:22, from libs/interprocess/test/intrusive_ptr_test.cpp:15: ./boost/interprocess/detail/atomic.hpp: In function `boost::uint32_t boost::interprocess::detail::atomic_add32(volatile boost::uint32_t*, boost::uint32_t)': ./boost/interprocess/detail/atomic.hpp:331: error: invalid conversion from `volatile uint32_t*' to `uint32_t*' ./boost/interprocess/detail/atomic.hpp:331: error: initializing argument 1 of `uint32_t atomic_add_32_nv(uint32_t*, int32_t)' ./boost/interprocess/detail/atomic.hpp: In function `boost::uint32_t boost::interprocess::detail::atomic_cas32(volatile boost::uint32_t*, boost::uint32_t, boost::uint32_t)': ./boost/interprocess/detail/atomic.hpp:341: error: `atomic_cas_32' undeclared (first use this function) ./boost/interprocess/detail/atomic.hpp:341: error: (Each undeclared identifier is reported only once for each function it appears in.) ./boost/interprocess/detail/atomic.hpp: In function `boost::uint32_t boost::interprocess::detail::atomic_inc32(volatile boost::uint32_t*)': ./boost/interprocess/detail/atomic.hpp:347: error: invalid conversion from `volatile uint32_t*' to `uint32_t*' ./boost/interprocess/detail/atomic.hpp:347: error: initializing argument 1 of `uint32_t atomic_add_32_nv(uint32_t*, int32_t)' ./boost/interprocess/detail/atomic.hpp: In function `boost::uint32_t boost::interprocess::detail::atomic_dec32(volatile boost::uint32_t*)': ./boost/interprocess/detail/atomic.hpp:353: error: invalid conversion from `volatile uint32_t*' to `uint32_t*' ./boost/interprocess/detail/atomic.hpp:353: error: initializing argument 1 of `uint32_t atomic_add_32_nv(uint32_t*, int32_t)' I have checked online, it suggests that solaris 9 atomic operations are not available for user code. It can only be used by kernel. Kindly suggest what may be wrong, or any workaround for the same. Regards, DS