Hello, with gcc-4.2 and speech-dispatcher-0.6.5, the following one-line test file cannot be compiled: #include <libspeechd.h> This is because libspeechd.h uses wchar_t in line 173, but doesn't include any header that defines this type. I suggest adding a #include <stddef.h> near the top of libspeechd.h. -- Alexander E. Patrakov