config-mac: define HAVE_SYS_IOCTL_H#10042
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Daft question since I don't know Mac OS other than as a user (a long time ago..). Is filio.h available on all versions of Mac OS on which it would be feasible to build libcurl? In other words, does it go further back than OS9?
Disclaimer: I'm mainly curious, I don't think it's a problem to define this if it doesn't
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Classic Mac OS does not have filio.h or other Unix headers. To build curl on classic Mac OS, the Grand Unified Socket Interface (GUSI) is required. It provides an early 2000s Unix-like socket and threads interface for classic Mac OS. It is compatible with System 7, Mac OS 8, and Mac OS 9.
Define HAVE_SYS_IOCTL_H in config-mac.h. This is needed to compile nonblock.c on classic Mac OS with GUSI because nonblock.c uses FIONBIO which is defined in <sys/filio.h> which is included by <sys/ioctl.h>.
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DefineHAVE_SYS_FILIO_Hin config-mac.h and include <sys/filio.h> in nonblock.c whenHAVE_SYS_FILIO_His defined.Define
HAVE_SYS_IOCTL_Hin config-mac.h. This is needed to compile nonblock.c on classic Mac OS with GUSI because nonblock.c usesFIONBIOwhich is defined in <sys/filio.h> which is included by <sys/ioctl.h>.