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40 lines
1.3 KiB
40 lines
1.3 KiB
4 years ago
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dnl We cannot use the AC_CHECK_TYPE macro to check for socklen_t because that
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dnl macro only checks in standard headers. This one checks in sys/socket.h
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dnl also. This code has been copied from Unix Network Programming examples
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dnl by W. Richard Stevens
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dnl
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dnl OPENSLP_CHECK_TYPE(TYPE, DEFAULT, DESCRIPTION)
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AC_DEFUN([OPENSLP_CHECK_TYPE],
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[AC_REQUIRE([AC_HEADER_STDC])dnl
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AC_MSG_CHECKING(for $1)
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AC_CACHE_VAL(ac_cv_type_$1,
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[AC_EGREP_CPP(dnl
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changequote(<<,>>)dnl
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<<(^|[^a-zA-Z_0-9])$1[^a-zA-Z_0-9]>>dnl
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changequote([,]), [#include <sys/types.h>
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#if STDC_HEADERS
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#include <stdlib.h>
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#include <stddef.h>
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#endif
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#include <sys/socket.h>], ac_cv_type_$1=yes, ac_cv_type_$1=no)])dnl
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AC_MSG_RESULT($ac_cv_type_$1)
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if test $ac_cv_type_$1 = no; then
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AC_DEFINE($1, $2, $3)
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fi
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])
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dnl Check for the presence of SA_RESTORER field in struct sigaction.
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dnl
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dnl OPENSLP_STRUCT_SA_RESTORER
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AC_DEFUN([OPENSLP_STRUCT_SA_RESTORER],
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[AC_CACHE_CHECK([for sa_restorer in struct sigaction],
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ac_cv_struct_sa_restorer,
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[AC_TRY_COMPILE([#include <sys/types.h>
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#include <sys/signal.h>], [struct sigaction s; s.sa_restorer;],
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ac_cv_struct_sa_restorer=yes, ac_cv_struct_sa_restorer=no)])
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if test $ac_cv_struct_sa_restorer = yes; then
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AC_DEFINE(HAVE_SA_RESTORER, 1, [defined if struct sigaction has member sa_restorer])
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fi
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])
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