+ add_DEFINES="-D_XOPEN_SOURCE_EXTENDED $add_DEFINES"
+fi
+
+if test `uname` = "SunOS"; then
+ # define _XOPEN_SOURCE, _XOPEN_SOURCE_EXTENDED=1 and __EXTENSIONS__
+ # when compiling on SunOS (tested with 5.6):
+ AC_MSG_RESULT([detected SunOS, defining _XOPEN_SOURCE, _XOPEN_SOURCE_EXTENDED=1 and __EXTENSIONS__])
+ add_DEFINES="-D_XOPEN_SOURCE -D_XOPEN_SOURCE_EXTENDED=1 -D__EXTENSIONS__ $add_DEFINES"