From 51c1297a483806d379a883ef021464a041284790 Mon Sep 17 00:00:00 2001
From: Warner Losh <imp@FreeBSD.org>
Date: Fri, 1 Apr 2005 22:54:22 +0000
Subject: [PATCH] Allow one to specify a second parameter to the machine line. 
 This allows us to specify the machine_arch as well as machine.  If specified
 then a second link will be made, similar to machine, from $MACHINE_ARCH to
 $S/$MACHINE_ARCH/include.

This is for ports where MACHINE != MACHINE_ARCH (pc98 today, others in
the future?).

Reviewed by: arch@, nyan@
---
 usr.sbin/config/config.h     |  4 +++-
 usr.sbin/config/config.y     |  9 +++++++++
 usr.sbin/config/configvers.h |  4 ++--
 usr.sbin/config/main.c       | 14 ++++++++++++++
 4 files changed, 28 insertions(+), 3 deletions(-)

diff --git a/usr.sbin/config/config.h b/usr.sbin/config/config.h
index f3d292d3283e..436f78be64d9 100644
--- a/usr.sbin/config/config.h
+++ b/usr.sbin/config/config.h
@@ -91,9 +91,11 @@ struct config {
  * being used.  It uses the name of the machine in choosing
  * files and directories.  Thus if the name of the machine is ``i386'',
  * it will build from ``Makefile.i386'' and use ``../i386/inline''
- * in the makerules, etc.
+ * in the makerules, etc.  machinearch is the global notion of the
+ * MACHINE_ARCH for this MACHINE.
  */
 char	*machinename;
+char	*machinearch;
 
 /*
  * For each machine, a set of CPU's may be specified as supported.
diff --git a/usr.sbin/config/config.y b/usr.sbin/config/config.y
index 77a17fcf386b..018ec6197606 100644
--- a/usr.sbin/config/config.y
+++ b/usr.sbin/config/config.y
@@ -138,6 +138,15 @@ Config_spec:
 		    errx(1, "%s:%d: only one machine directive is allowed",
 			yyfile, yyline);
 		machinename = $2;
+		machinearch = $2;
+	      } |
+	ARCH Save_id Save_id
+	    = {
+		if (machinename != NULL)
+		    errx(1, "%s:%d: only one machine directive is allowed",
+			yyfile, yyline);
+		machinename = $2;
+		machinearch = $3;
 	      } |
 	CPU Save_id
 	      = {
diff --git a/usr.sbin/config/configvers.h b/usr.sbin/config/configvers.h
index 830cf20d058e..aa174cf5803d 100644
--- a/usr.sbin/config/configvers.h
+++ b/usr.sbin/config/configvers.h
@@ -1,6 +1,6 @@
 /*
  * 6 digits of version.  The most significant are branch indicators
- * (eg: RELENG_2_2 = 22, -current presently = 50 etc). The least
+ * (eg: RELENG_2_2 = 22, -current presently = 60 etc). The least
  * significant digits are incremented for each incompatible change.
  *
  * The numbering scheme is inspired by the sys/conf/newvers.sh RELDATE
@@ -8,4 +8,4 @@
  *
  * $FreeBSD$
  */
-#define	CONFIGVERS	600001
+#define	CONFIGVERS	600002
diff --git a/usr.sbin/config/main.c b/usr.sbin/config/main.c
index a2002fb3abe9..675d3bb675b2 100644
--- a/usr.sbin/config/main.c
+++ b/usr.sbin/config/main.c
@@ -163,6 +163,20 @@ main(int argc, char **argv)
 		    srcdir, machinename);
 	(void) unlink(path("machine"));
 	(void) symlink(xxx, path("machine"));
+	if (strcmp(machinename, machinearch) != 0) {
+		/*
+		 * make symbolic links in compilation directory for
+		 * machinearch, if it is different than machinename.
+		 */
+		if (*srcdir == '\0')
+			(void)snprintf(xxx, sizeof(xxx), "../../../%s/include",
+			    machinearch);
+		else
+			(void)snprintf(xxx, sizeof(xxx), "%s/%s/include",
+			    srcdir, machinearch);
+		(void) unlink(path(machinearch));
+		(void) symlink(xxx, path(machinearch));
+	}
 	options();			/* make options .h files */
 	makefile();			/* build Makefile */
 	headers();			/* make a lot of .h files */