syslog support; bitwise logior and logand functions become variadic.

* Makefile: Use -iquote to restrict our #include search paths from
being processed for #include <...>.  Add syslog.o to OBJS-y if
have_syslog is y.

* configure (have_syslog): New variable, set by detecting syslog API.

* eval.c (eval_init): logand and logior registrations changed to
go to variadic versions. New syslog variables and functions registered.

* lib.c (logandv, logiorv): New functions.

* lib.h (logandv, logiorv): Declared.

* txr.c (main): Call syslog_init.

* syslog.c: New file.

* syslog.h: New file.

* txr.1: Updated.

* txr.vim: Regenerated.

1 files changed, 21 insertions, 0 deletions

diff --git a/stream.h b/stream.h
index 604a5e78..4b4bd40e 100644
--- a/stream.h
+++ b/stream.h
@@ -24,6 +24,27 @@
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  */
 
+enum strm_whence {
+  strm_start = SEEK_SET,
+  strm_cur = SEEK_CUR,
+  strm_end = SEEK_SET
+};
+
+struct strm_ops {
+  struct cobj_ops cobj_ops;
+  val (*put_string)(val, val);
+  val (*put_char)(val, val);
+  val (*put_byte)(val, int);
+  val (*get_line)(val);
+  val (*get_char)(val);
+  val (*get_byte)(val);
+  val (*close)(val, val);
+  val (*flush)(val);
+  val (*seek)(val, cnum, enum strm_whence);
+  val (*get_prop)(val, val ind);
+  val (*set_prop)(val, val ind, val);
+};
+
 extern val std_input, std_output, std_debug, std_error, std_null;
 extern val output_produced;