DCMTK

log4cplus 1.1.0 was released on 02.10.2012. Sounds like something we could use. :-)

Here's a list of new features (from log4cplus's homepage):

AsyncAppender, Log4jUdpAppender, SysLogAppender with remote syslog UDP logging support enabled on Windows, Qt4DebugAppender, simple C interface for interoperability with C, inter–process file locking to file appenders to allow logging into a single log file from multiple processes, Mapped Diagnostic Context (MDC), alternative thread identification (%T) converter to pattern layout, function name converter (%M), wchar_t ↔ char conversion implementations based on standard C locale functions and based on iconv(), DeviceAppender to allow use of Boost.IOStream's Sink as appender, LOG4CPLUS_*_FMT() macros to allow printf-like formatted output where it is possible (requires variadic macros support).

Since I am pretty sure that I won't be handling this on first checking (remind me to remind Jörg to do a snapshot before I break oflog), here is the list of new configure macros needed by log4cplus 1.1.0:

$ git diff config | grep '+#define'
+#define DCMTK_LOG4CPLUS_HAVE_ARPA_INET_H
+#define DCMTK_LOG4CPLUS_HAVE_NETINET_TCP_H
+#define DCMTK_LOG4CPLUS_HAVE_SYS_TIMEB_H
+#define DCMTK_LOG4CPLUS_HAVE_SYS_TIME_H
+#define DCMTK_LOG4CPLUS_HAVE_SYS_STAT_H
+#define DCMTK_LOG4CPLUS_HAVE_SYS_SYSCALL_H
+#define DCMTK_LOG4CPLUS_HAVE_SYS_FILE_H
+#define DCMTK_LOG4CPLUS_HAVE_TIME_H
+#define DCMTK_LOG4CPLUS_HAVE_FCNTL_H
+#define DCMTK_LOG4CPLUS_HAVE_STDARG_H
+#define DCMTK_LOG4CPLUS_HAVE_STDIO_H
+#define DCMTK_LOG4CPLUS_HAVE_STDLIB_H
+#define DCMTK_LOG4CPLUS_HAVE_ERRNO_H
+#define DCMTK_LOG4CPLUS_HAVE_WCHAR_H
+#define DCMTK_LOG4CPLUS_HAVE_ICONV_H
+#define DCMTK_LOG4CPLUS_HAVE_LIMITS_H
+#define DCMTK_LOG4CPLUS_HAVE_GETHOSTBYNAME_R
+#define DCMTK_LOG4CPLUS_HAVE_CLOCK_GETTIME
+#define DCMTK_LOG4CPLUS_HAVE_NANOSLEEP
+#define DCMTK_LOG4CPLUS_HAVE_CLOCK_NANOSLEEP
+#define DCMTK_LOG4CPLUS_HAVE_FCNTL
+#define DCMTK_LOG4CPLUS_HAVE_LOCKF
+#define DCMTK_LOG4CPLUS_HAVE_FLOCK
+#define DCMTK_LOG4CPLUS_DECLSPEC_PRIVATE
+#define DCMTK_LOG4CPLUS_HAVE_TLS_SUPPORT
+#define DCMTK_LOG4CPLUS_THREAD_LOCAL_VAR
+#define DCMTK_LOG4CPLUS_HAVE___SYNC_ADD_AND_FETCH
+#define DCMTK_LOG4CPLUS_HAVE___SYNC_SUB_AND_FETCH
+#define DCMTK_LOG4CPLUS_HAVE_CXX11_ATOMICS
+#define DCMTK_LOG4CPLUS_HAVE_C99_VARIADIC_MACROS
+#define DCMTK_LOG4CPLUS_HAVE_GNU_VARIADIC_MACROS
+#define DCMTK_LOG4CPLUS_HAVE_VSNPRINTF
+#define DCMTK_LOG4CPLUS_HAVE__VSNPRINTF
+#define DCMTK_LOG4CPLUS_HAVE_VFPRINTF_S
+#define DCMTK_LOG4CPLUS_HAVE_VFWPRINTF_S
+#define DCMTK_LOG4CPLUS_HAVE_VSPRINTF_S
+#define DCMTK_LOG4CPLUS_HAVE_VSWPRINTF_S
+#define DCMTK_LOG4CPLUS_HAVE__VSNPRINTF_S
+#define DCMTK_LOG4CPLUS_HAVE__VSNWPRINTF_S
+#define DCMTK_LOG4CPLUS_HAVE_FUNCTION_MACRO
+#define DCMTK_LOG4CPLUS_HAVE_PRETTY_FUNCTION_MACRO
+#define DCMTK_LOG4CPLUS_HAVE_FUNC_SYMBOL
+#define DCMTK_LOG4CPLUS_HAVE_MBSTOWCS
+#define DCMTK_LOG4CPLUS_HAVE_WCSTOMBS
+#define DCMTK_LOG4CPLUS_HAVE_GETTID
+#define DCMTK_LOG4CPLUS_WITH_ICONV
+#define DCMTK_LOG4CPLUS_HAVE_ICONV
+#define DCMTK_LOG4CPLUS_HAVE_ICONV_CLOSE
+#define DCMTK_LOG4CPLUS_HAVE_ICONV_OPEN

Log4cplus 1.1.0 does not build with MSC6 (774 errors, the first one being "cannot convert from 'void (_thiscall log4cplus::thread::SharedMutex::*)(void)' to 'void (_thiscall log4cplus::thread::SharedMutex::*)(void)'" and the other errors being equally confusing).

Ideas?

(But to be fair: It feels like half the errors are "<foo> is not in namespace std" and the other half is related to template magic in thread/syncprims.h)