The test/test_status.c fails to compile using MSVC since the statement: log_global_min_severity_ = LOG_DEBUG; Ref. https://gitweb.torproject.org/tor.git/commit/3ce3984772b673b82a87aded1bc8a1a... This 'log_global_min_severity_' variable should not be only for GNU-C? So this patch fixed it for MSVC: --- common/torlog.h.orig 2014-05-09 23:20:36 +0000 +++ common/torlog.h 2014-05-10 13:06:15 +0000 @@ -156,9 +156,9 @@ int tor_log_get_sigsafe_err_fds(const int **out); void tor_log_update_sigsafe_err_fds(void); -#if defined(__GNUC__) || defined(RUNNING_DOXYGEN) extern int log_global_min_severity_; +#if defined(__GNUC__) || defined(RUNNING_DOXYGEN) void log_fn_(int severity, log_domain_mask_t domain, const char *funcname, const char *format, ...) CHECK_PRINTF(4,5); --gv