When I tried to upgrade shmem 0.9 in vault I am failing to compile on Cygwin using gcc 3.4.4 with the following error message.
e:/boost/boost_1_33_1/boost/shmem/shared_memory.hpp:585: error: there are no arguments to `shm_open' that depend on a template parameter, so a declaration of `shm_open' must be available e:/boost/boost_1_33_1/boost/shmem/shared_memory.hpp:585: error: (if you use `-fpermissive', G++ will accept your code, but allowing the use of an undeclared name is deprecated)
I went a head and added the following two lines to shared_memory.hpp after which I was able to compile.
I didn't know that someone was trying to use this in cygwin! Last time I checked, cygwin had not PTHREAD_PROCESS_SHARED support so I thought Shmem couldn't work with cygwin. I'm wrong or has this changed? You've said "I tried to upgrade shmem 0.9" so I suppose you have tested previous Shmem versions. What was the latest version of Shmem that you could compile? I don't know much about cygwin but shared_memory.hpp header says: #if (defined BOOST_WINDOWS) && !(defined BOOST_DISABLE_WIN32) # include <boost/shmem/sync/win32/win32_sync_primitives.hpp> #else # ifdef BOOST_HAS_UNISTD_H # include <fcntl.h> //O_CREAT, O_*... # include <sys/mman.h> //mmap # include <unistd.h> //ftruncate, close # include <semaphore.h> //sem_t* family, SEM_VALUE_MAX # include <string> //std::string # include <sys/stat.h> //mode_t, S_IRWXG, S_IRWXO, S_IRWXU, # else # error Unknown platform # endif So if you have calls to shm_open in the code the #if (defined BOOST_WINDOWS) && !(defined BOOST_DISABLE_WIN32) condition should be true and since you don't get # error Unknown platform I suppose BOOST_HAS_UNISTD_H is true. And posix says # include <sys/mman.h> //mmap is enough to get shm_open and shm_unlink declarations. Can you investigate this a bit further? Thanks, Ion