log4tango: Require snprintf support

Since the default C++ version was raised to 11 we now know that we have
a working snprintf solution.

Therefore we can drop the alternative implementation which was not
touched in 18 years.

This also makes LOG4TANGO_HAVE_SNPRINTF obsolete, it is therefore
removed.

Author: t-b

log4tango/config/check_snprintf.cpp

@@ -53,9 +53,6 @@ LOG4TANGO_CHECK_COMPILER_FEATURE("config/check_sstream.cpp" SSTREAM)
 #namespace
 LOG4TANGO_CHECK_COMPILER_FEATURE("config/check_namespace.cpp" NAMESPACES)
 
-#snprintf
-LOG4TANGO_CHECK_COMPILER_FEATURE("config/check_snprintf.cpp" SNPRINTF)
-
 #check types
 check_type_size(int64_t INT64_SIZE)
 if(WIN32)

log4tango/config/config.cmake

@@ -22,9 +22,6 @@
 /* define if the compiler implements namespaces */
 #cmakedefine LOG4TANGO_HAVE_NAMESPACES
 
-/* define if the C library has snprintf */
-#cmakedefine LOG4TANGO_HAVE_SNPRINTF
-
 /* define if the compiler has stringstream */
 #cmakedefine LOG4TANGO_HAVE_SSTREAM
 
@@ -77,4 +74,4 @@
 #cmakedefine __darwin__
 
 /* If we're running on FreeBSD */
-#cmakedefine __freebsd__
+#cmakedefine __freebsd__

log4tango/config/config.h.in

@@ -84,11 +84,6 @@ typedef __int64 int64_t;
 # define LOG4TANGO_HAVE_SSTREAM 1
 #endif
 
-/* define if the C library has snprintf */
-#ifndef LOG4TANGO_HAVE_SNPRINTF
-# define LOG4TANGO_HAVE_SNPRINTF 1
-#endif
-
 /* define to get around problems with ERROR in windows.h */
 #ifndef LOG4TANGO_FIX_ERROR_COLLISION
 # define LOG4TANGO_FIX_ERROR_COLLISION 1

log4tango/include/log4tango/config-win32.h

@@ -32,24 +32,7 @@
 #if defined(_MSC_VER)
     #define VSNPRINTF _vsnprintf
 #else
-#ifdef LOG4TANGO_HAVE_SNPRINTF
     #define VSNPRINTF vsnprintf
-#else
-/* use alternative snprintf() from http://www.ijs.si/software/snprintf/ */
-
-#define HAVE_SNPRINTF
-#define PREFER_PORTABLE_SNPRINTF
-
-#include <stdlib.h>
-#include <stdarg.h>
-
-extern "C" {
-#include "snprintf.c"
-}
-
-#define VSNPRINTF portable_vsnprintf
-
-#endif // LOG4TANGO_HAVE_SNPRINTF
 #endif // _MSC_VER
 
 namespace log4tango {