Imported Upstream version 2.6.0p2

[debian/amanda] / config / amanda / socklen_t_equiv.m4

diff --git a/config/amanda/socklen_t_equiv.m4 b/config/amanda/socklen_t_equiv.m4
new file mode 100644 (file)
index 0000000..1d95d3b
--- /dev/null
+++ b/config/amanda/socklen_t_equiv.m4
@@ -0,0 +1,48 @@
+# SYNOPSIS
+#
+#   AMANDA_SOCKLEN_T_EQUIV
+#
+# OVERVIEW
+#
+#   Find a type which will work like socklen_t should.  Unfortunately, 
+#   HP/UX systems define socklen_t, but use int * as the result parameter
+#   for socket functions returning a socket length.
+#
+#   This check defines a type socklen_t_equiv which is of the appropriate
+#   size to be used with socket functions.
+#
+AC_DEFUN([AMANDA_SOCKLEN_T_EQUIV],
+[
+      ## lifted from config/gnulib/socklen.m4
+      AC_REQUIRE([gl_HEADER_SYS_SOCKET])dnl
+      AC_MSG_CHECKING([for socklen_t equivalent])
+      AC_CACHE_VAL([gl_cv_socklen_t_equiv],
+       [# Systems have either "struct sockaddr *" or
+        # "void *" as the second argument to getpeername
+        gl_cv_socklen_t_equiv=
+        for arg2 in "struct sockaddr" void; do
+          for t in socklen_t int size_t "unsigned int" "long int" "unsigned long int"; do
+            AC_TRY_COMPILE(
+              [#include <sys/types.h>
+               #include <sys/socket.h>
+
+               int getpeername (int, $arg2 *, $t *);],
+              [$t len;
+               getpeername (0, 0, &len);],
+              [gl_cv_socklen_t_equiv="$t"])
+            test "$gl_cv_socklen_t_equiv" != "" && break
+          done
+          test "$gl_cv_socklen_t_equiv" != "" && break
+        done
+      ])
+      ## end lifting from config/gnulib/socklen.m4
+      # fallback if the check fails
+      if test "$gl_cv_socklen_t_equiv" = ""; then
+       gl_cv_socklen_t_equiv=socklen_t
+      fi
+      AC_MSG_RESULT([$gl_cv_socklen_t_equiv])
+
+      AC_DEFINE_UNQUOTED([socklen_t_equiv], [$gl_cv_socklen_t_equiv],
+       [type to use for socket length parameters; use instead of socklen_t])
+])
+