See e.g. http://curl.haxx.se/dev/log.cgi?id=20130829053724-14374#prob7
'struct monitor', introduced in 6cf8413e, already exists in an IRIX
header file (sys/mon.h) which gets included via various standard
headers by lib/easy.c
cc-1101 cc: ERROR File = ../../curl/lib/easy.c, Line = 458
"monitor" has already been declared in the current scope.
struct monitor {
^
-Tor
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