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5.8.2 Generic Structure Checks
These macros are used to find structure members not covered by the
“particular” test macros.
— Macro: AC_CHECK_MEMBER ( aggregate.member, [action-if-found], [action-if-not-found], [includes = ‘default-includes’])
Check whether member is a member of the aggregate aggregate.
If no includes are specified, the default includes are used
(see Default Includes).
AC_CHECK_MEMBER([struct passwd.pw_gecos], [],
[AC_MSG_ERROR([We need `passwd.pw_gecos'!])],
[#include <pwd.h>])
You can use this macro for submembers:
AC_CHECK_MEMBER(struct top.middle.bot)
— Macro: AC_CHECK_MEMBERS ( members, [action-if-found], [action-if-not-found], [includes = ‘default-includes’])
Check for the existence of each ‘aggregate.member’ of
members using the previous macro. When member belongs to
aggregate, define HAVE_aggregate_member (in all
capitals, with spaces and dots replaced by underscores). If
action-if-found is given, it is executed for each of the found
members. If action-if-not-found is given, it is executed for each
of the members that could not be found.
This macro uses M4 lists:
AC_CHECK_MEMBERS([struct stat.st_rdev, struct stat.st_blksize])
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