AX_HAVE_SELECT([ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND]) AX_HAVE_PSELECT([ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
This macro determines whether the system supports the select I/O event interface. A neat usage example would be:
AX_HAVE_SELECT(
[AX_CONFIG_FEATURE_ENABLE(select)],
[AX_CONFIG_FEATURE_DISABLE(select)])
AX_CONFIG_FEATURE(
[select], [This platform supports select(7)],
[HAVE_SELECT], [This platform supports select(7).])
Some systems also have the variant pselect(). The availability of that function can be tested with the second macro. Generally speaking, it is safe to assume that AX_HAVE_SELECT would succeed if AX_HAVE_SELECT_PWAIT has, but not the other way round.
Download the latest version of ax_have_select.m4 or browse the macro’s revision history.
Copyright © 2009 Peter Simons simons@cryp.to
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