Adding uname.

* configure: Detect utsname and uname.

* sysif.c (utsname_s, sysname_s, nodename_s, release_s,
version_s, machine_s): New symbol variables.
(uname_wrap): New static function.
(sysif_init): Initialize new symbol variables.
Instantiate utsname struct type. Register uname_wrap
as uname intrinsic function.

* txr.1: Documented.

1 files changed, 38 insertions, 0 deletions

diff --git a/txr.1 b/txr.1
index df6c642d..7c6cbac8 100644
--- a/txr.1
+++ b/txr.1
@@ -40822,6 +40822,44 @@ and the output of
 may be used as an argument to
 .codn stty .
 
+.SS* Unix System Identification
+
+.coNP Structure @ utsname
+.synb
+.mets (defstruct utsname nil
+.mets \ \ sysname nodename release
+.mets \ \ version machine domainname)
+.syne
+.desc
+The
+.code utsname
+structure corresponds to the POSIX structure of the same name.
+An instance of this structure is returned by the
+.code uname
+function.
+
+.coNP Function @ uname
+.synb
+.mets (uname)
+.syne
+.desc
+The
+.code uname
+function corresponds to the POSIX
+function of the same name. It returns an instance of the
+.code utsname
+structure.  Each slot of the returned structure is
+initialized with a character string that identifies the corresponding attribute
+of the host system.
+
+The host system might not support the reporting of the
+NIS domain name. In this case, the
+.code domainname
+slot of the returned
+.code utsname
+structure will have the value
+.codn nil .
+
 .SS* Web Programming Support
 
 .coNP Functions @ url-encode and @ url-decode