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Date: Fri, 4 Jan 2019 02:55:52 +0100
From: cinap_lenrek@felloff.net
To: 9front@9front.org
Subject: Re: [9front] T60 regression?
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ok, i think i got it. the mem.h dependency was not expressed
correctly for apbootstrap.h in pc64. there was a "apboostrap.$O: mem.h"
dependency but this is wrong as apoostrap.$O is an intermediate file
that never gets referenced in the dependency graph. the real dependency
needs to be on apboostrap.h.

changeset:   6986:b048db97b5ea
tag:         tip
user:        cinap_lenrek@felloff.net
date:        Fri Jan 04 02:51:29 2019 +0100
summary:     pc, pc64: properly track dependencies for mem.h on autogenerated apbootstrap.h and reboot.h targets

diff -r 8c50688cb280 -r b048db97b5ea sys/src/9/pc/mkfile
--- a/sys/src/9/pc/mkfile	Wed Jan 02 10:26:38 2019 +0100
+++ b/sys/src/9/pc/mkfile	Fri Jan 04 02:51:29 2019 +0100
@@ -8,8 +8,9 @@
 p=9
 
 # must match mem.h
+KTZERO=0xF0100020
 APBOOTSTRAP=0xF0007000
-KTZERO=0xF0100020
+REBOOTADDR=0x11000
 
 DEVS=`{rc ../port/mkdevlist $CONF}
 
@@ -143,15 +144,15 @@
 		sed -e 's/^[0-9a-f]+ //' -e 's/ ([0-9a-f][0-9a-f])/0x\1,/g'
 	 echo '};'} > init.h
 
-reboot.h:D:	rebootcode.s
+reboot.h:D:	rebootcode.s mem.h
 	$AS rebootcode.s
-	$LD -l -s -T0x11000 -R4 -o reboot.out rebootcode.$O
+	$LD -l -s -T$REBOOTADDR -R4 -o reboot.out rebootcode.$O
 	{echo 'uchar rebootcode[]={'
 	 xd -1x reboot.out |
 		sed -e '1,2d' -e 's/^[0-9a-f]+ //' -e 's/ ([0-9a-f][0-9a-f])/0x\1,/g'
 	 echo '};'} > reboot.h
 
-apbootstrap.h:	apbootstrap.s mem.h
+apbootstrap.h:D:	apbootstrap.s mem.h
 	$AS $prereq
 	$LD -o apbootstrap.out -T$APBOOTSTRAP -R4 -l -s apbootstrap.$O
 	{echo 'uchar apbootstrap[]={'
diff -r 8c50688cb280 -r b048db97b5ea sys/src/9/pc64/mkfile
--- a/sys/src/9/pc64/mkfile	Wed Jan 02 10:26:38 2019 +0100
+++ b/sys/src/9/pc64/mkfile	Fri Jan 04 02:51:29 2019 +0100
@@ -5,6 +5,7 @@
 </$objtype/mkfile
 p=9
 
+# must match mem.h
 KTZERO=0xffffffff80110000
 APBOOTSTRAP=0xffffffff80007000
 REBOOTADDR=0x11000
@@ -99,7 +100,7 @@
 <../port/portmkfile
 <|../port/mkbootrules $CONF
 
-l.$O apbootstrap.$O:		mem.h
+l.$O:				mem.h
 
 $ETHER: 			../port/etherif.h ../port/netif.h
 $AUDIO:				../port/audioif.h
@@ -144,7 +145,7 @@
 		sed -e 's/^[0-9a-f]+ //' -e 's/ ([0-9a-f][0-9a-f])/0x\1,/g'
 	 echo '};'} > init.h
 
-reboot.h:	rebootcode.s
+reboot.h:D:	rebootcode.s mem.h
 	$AS rebootcode.s
 	$LD -l -R1 -s -o reboot.out -T$REBOOTADDR rebootcode.$O
 	{echo 'uchar rebootcode[]={'
@@ -153,7 +154,7 @@
 	 sed -e 's/^[0-9a-f]+ //' -e 's/ ([0-9a-f][0-9a-f])/0x\1,/g'
 	 echo '};'} > $target
 
-apbootstrap.h:	apbootstrap.s
+apbootstrap.h:D:	apbootstrap.s mem.h
 	$AS apbootstrap.s
 	$LD -l -R1 -s -o apbootstrap.out -T$APBOOTSTRAP apbootstrap.$O
 	{echo 'uchar apbootstrap[]={'