I am using managed_shared_memory to implement a cache. However during compilation I get the following error - g++ -o .build/CacheLib/cachebase.pic.o -c -fPIC -m64 -g -isystem /usr/local/include/c++/3.4.2 -isystem /usr/local/include/c++/3.4.2/sparc-sun-solaris2.9 -isystem /usr/include -isystem /usr/local/include-isystem /usr/local/lib/gcc/sparc-sun-solaris2.9/3.4.2/include -isystem /usr/include/sys -nostdinc -nostdinc++ -I/usr/local/include/boost-1_39 -I/geneva1/apps/IRB_2.2.30/2.2.30_CURRENT/include -I/oracle/product/9.2.0/rdbms/demo -I.build/CacheLib -Isrc/CacheLib -I/usr/local/include/log4cpp src/CacheLib/cachebase.cpp In file included from /usr/local/include/boost-1_39/boost/interprocess/detail/managed_open_or_create_impl.hpp:20, from /usr/local/include/boost-1_39/boost/interprocess/managed_mapped_file.hpp:20, from src/CacheLib/cachebase.h:12, from src/CacheLib/cachebase.cpp:8: /usr/local/include/boost-1_39/boost/interprocess/detail/atomic.hpp: In function `boost::uint32_t boost::interprocess::detail::atomic_add32(volatile boost::uint32_t*, boost::uint32_t)': /usr/local/include/boost-1_39/boost/interprocess/detail/atomic.hpp:331: error: `atomic_add_32_nv' undeclared (first use this function) /usr/local/include/boost-1_39/boost/interprocess/detail/atomic.hpp:331: error: (Each undeclared identifier is reported only once for each function it appears in.) /usr/local/include/boost-1_39/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)': /usr/local/include/boost-1_39/boost/interprocess/detail/atomic.hpp:341: error: `atomic_cas_32' undeclared (first use this function) /usr/local/include/boost-1_39/boost/interprocess/detail/atomic.hpp: In function `boost::uint32_t boost::interprocess::detail::atomic_inc32(volatile boost::uint32_t*)': /usr/local/include/boost-1_39/boost/interprocess/detail/atomic.hpp:347: error: `atomic_add_32_nv' undeclared (first use this function) /usr/local/include/boost-1_39/boost/interprocess/detail/atomic.hpp: In function `boost::uint32_t boost::interprocess::detail::atomic_dec32(volatile boost::uint32_t*)': /usr/local/include/boost-1_39/boost/interprocess/detail/atomic.hpp:353: error: `atomic_add_32_nv' undeclared (first use this function) scons: *** [.build/CacheLib/cachebase.pic.o] Error 1 scons: building terminated because of errors. I am using gcc version 3.4.2 on solaris 9. Reading specs from /usr/local/lib/gcc/sparc-sun-solaris2.9/3.4.2/specs Configured with: ../configure --with-as=/usr/ccs/bin/as --with-ld=/usr/ccs/bin/ld --disable-nls Thread model: posix gcc version 3.4.2 Kindly advice what is the problem? Is there any way I can use pthread atomic operation instead to solaris atomic operations. Note: The same code is working fine on RHEL Enterprise 5 and Hp-UX.