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AC_CHECK_DEFINE([symbol], [ACTION-IF-FOUND], [ACTION-IF-NOT]) AX_CHECK_DEFINE([includes],[symbol], [ACTION-IF-FOUND], [ACTION-IF-NOT])
Complements AC_CHECK_FUNC but it does not check for a function but for a define to exist. Consider a usage like:
AC_CHECK_DEFINE(__STRICT_ANSI__, CFLAGS="$CFLAGS -D_XOPEN_SOURCE=500")
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Copyright © 2008 Guido U. Draheim guidod@gmx.de
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