Use POSIX macros for linux

cde/lib/tt/slib/mp_otype.C

@@ -31,7 +31,7 @@
  * Copyright (c) 1990 by Sun Microsystems, Inc.
  */
 #include <stdlib.h>
-#if defined(linux) || defined(CSRG_BASED)
+#if defined(__linux__) || defined(CSRG_BASED)
 /*# include <g++/minmax.h>*/
 #else
 # include <macros.h>

cde/lib/tt/slib/mp_ptype.C

@@ -26,7 +26,7 @@
 //%%  (c) Copyright 1993, 1994 Novell, Inc. 				
 //%%  $TOG: mp_ptype.C /main/4 1998/03/20 14:27:56 mgreess $ 			 				
 #include <stdlib.h>
-#if defined(linux) || defined(CSRG_BASED)
+#if defined(__linux__) || defined(CSRG_BASED)
 /*# include <g++/minmax.h>*/
 #else
 # include <macros.h>

cde/lib/tt/slib/mp_rpc_implement.C

@@ -49,7 +49,7 @@
 #include <sys/uio.h>
 #include <fcntl.h>
 #include <unistd.h>
-#if defined(linux) || defined(CSRG_BASED)
+#if defined(__linux__) || defined(CSRG_BASED)
 /*# include <g++/minmax.h>*/
 #else
 # include <macros.h>

cde/lib/tt/slib/mp_rpc_server.C

@@ -350,7 +350,7 @@ gettransient(int proto, int vers, int *sockp)
 #ifndef OPT_TLI
 	int			found;
 	int			s;
-#if defined(linux) || defined(CSRG_BASED)
+#if defined(__linux__) || defined(CSRG_BASED)
 	socklen_t		len;
 #else
 	int			len;
@@ -399,7 +399,7 @@ gettransient(int proto, int vers, int *sockp)
 	}
 
 	int optval = 0;
-#if !defined(linux)
+#if !defined(__linux__)
 	if (setsockopt(s, SOL_SOCKET, SO_USELOOPBACK,
 		       (char *)&optval, sizeof(optval)) == -1) {
 	}

cde/lib/tt/slib/mp_signature.C

@@ -35,7 +35,7 @@
  *  a procedure.
  */
 #include <stdlib.h>
-#if defined(linux) || defined(CSRG_BASED)
+#if defined(__linux__) || defined(CSRG_BASED)
 /*# include <g++/minmax.h>*/
 #else
 # include <macros.h>

cde/lib/tt/slib/mp_typedb.C

@@ -39,7 +39,7 @@
 // databases. 
 //
 #include <stdlib.h>
-#if defined(linux) || defined(CSRG_BASED)
+#if defined(__linux__) || defined(CSRG_BASED)
 /*# include <g++/minmax.h>*/
 #else
 # include <macros.h>