[cp-patches] RFC: checking for socklen_t

[Christian Thalinger]

Hi!

I tried to compile classpath on a quite old system:

$ uname -a   
OSF1 mips.complang.tuwien.ac.at V4.0 878 alpha

And on this system socklen_t isn't defined.  This macro taken from
 http://ac-archive.sourceforge.net/Miscellaneous/type_socklen_t.html

checks for socklen_t and define it to `int' if not found (Andrew Pinski
will surely complain here ;-)

TWISTI


2006-01-01  Christian Thalinger  <address@hidden>

        * configure.ac: Added TYPE_SOCKLEN_T call.
        * m4/type_socklen_t: Added.


Index: configure.ac
===================================================================
RCS file: /cvsroot/classpath/classpath/configure.ac,v
retrieving revision 1.122
diff -u -3 -p -r1.122 configure.ac
--- configure.ac        1 Jan 2006 20:57:30 -0000       1.122
+++ configure.ac        1 Jan 2006 22:17:27 -0000
@@ -276,6 +276,8 @@ if test "x${COMPILE_JNI}" = xyes; then
   AC_STRUCT_TM
   AC_STRUCT_TIMEZONE
 
+  TYPE_SOCKLEN_T
+
   AC_MSG_CHECKING([for tm_gmtoff in struct tm])
   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <time.h>]],[[struct tm tim; 
tim.tm_gmtoff = 0;]])],
   [AC_DEFINE(STRUCT_TM_HAS_GMTOFF, 1, [Define if struct tm has tm_gmtoff 
field.])
Index: m4/type_socklen_t.m4
===================================================================
RCS file: m4/type_socklen_t.m4
diff -N m4/type_socklen_t.m4
--- /dev/null   1 Jan 1970 00:00:00 -0000
+++ m4/type_socklen_t.m4        1 Jan 2006 22:17:27 -0000
@@ -0,0 +1,14 @@
+AC_DEFUN([TYPE_SOCKLEN_T],
+[AC_CACHE_CHECK([for socklen_t], ac_cv_type_socklen_t,
+[
+  AC_TRY_COMPILE(
+  [#include <sys/types.h>
+   #include <sys/socket.h>],
+  [socklen_t len = 42; return 0;],
+  ac_cv_type_socklen_t=yes,
+  ac_cv_type_socklen_t=no)
+])
+  if test $ac_cv_type_socklen_t != yes; then
+    AC_DEFINE(socklen_t, int, [Substitute for socklen_t])
+  fi
+])