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Autoconf Macro: ac_func_accept_argtypes
</title>
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<h1>
ac_func_accept_argtypes
</h1>
<h2>
Synopsis
</h2>
<p class="indent" style="white-space:nowrap;">
<code>AC_FUNC_ACCEPT_ARGTYPES</code>
</p>
<h2>
Description
</h2>
<div class="indent">
<p>
Checks the data types of the three arguments to accept(). Results are
placed into the symbols ACCEPT_TYPE_ARG[123], consistent with the following
example:
</p>
<pre>
#define ACCEPT_TYPE_ARG1 int
#define ACCEPT_TYPE_ARG2 struct sockaddr *
#define ACCEPT_TYPE_ARG3 socklen_t *
</pre>
<p>
This macro requires AC_CHECK_HEADERS to have already verified the presence
or absence of sys/types.h and sys/socket.h.
</p>
<p>
NOTE: This is just a modified version of the AC_FUNC_SELECT_ARGTYPES macro.
Credit for that one goes to David MacKenzie et. al.
</p>
</div>
<h2>
Author
</h2>
<p class="indent">
Daniel Richard G. <skunk@mit.edu>
</p>
<h2>
Last Modified
</h2>
<p class="indent">
2000-07-19
</p>
<h2>
M4 Source Code
</h2>
<div class="indent">
<pre class="m4source">
AC_DEFUN([AC_FUNC_ACCEPT_ARGTYPES],
[AC_MSG_CHECKING([types of arguments for accept()])
AC_CACHE_VAL(ac_cv_func_accept_arg1,dnl
[AC_CACHE_VAL(ac_cv_func_accept_arg2,dnl
[AC_CACHE_VAL(ac_cv_func_accept_arg3,dnl
[for ac_cv_func_accept_arg1 in 'int' 'unsigned int'; do
for ac_cv_func_accept_arg2 in 'struct sockaddr *' 'void *'; do
for ac_cv_func_accept_arg3 in 'socklen_t *' 'size_t *' 'unsigned int *' 'int *'; do
AC_TRY_COMPILE(dnl
[#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
extern accept ($ac_cv_func_accept_arg1, $ac_cv_func_accept_arg2, $ac_cv_func_accept_arg3);],,dnl
[ac_not_found=no ; break 3], ac_not_found=yes)
done
done
done
])dnl AC_CACHE_VAL
])dnl AC_CACHE_VAL
])dnl AC_CACHE_VAL
if test "$ac_not_found" = yes; then
ac_cv_func_accept_arg1=int
ac_cv_func_accept_arg2='struct sockaddr *'
ac_cv_func_accept_arg3='socklen_t *'
fi
AC_MSG_RESULT([$ac_cv_func_accept_arg1, $ac_cv_func_accept_arg2, $ac_cv_func_accept_arg3])
AC_DEFINE_UNQUOTED(ACCEPT_TYPE_ARG1,$ac_cv_func_accept_arg1)
AC_DEFINE_UNQUOTED(ACCEPT_TYPE_ARG2,$ac_cv_func_accept_arg2)
AC_DEFINE_UNQUOTED(ACCEPT_TYPE_ARG3,$ac_cv_func_accept_arg3)
])
</pre>
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