>Number:         16930
>Category:       port-next68k
>Synopsis:       boot program doesn't build without gawk
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    port-next68k-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon May 20 13:17:01 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Christian Limpach
>Release:        current (as of May 20 2002)
>Organization:
	
>Environment:
	
System: NetBSD clapper 1.5ZC NetBSD 1.5ZC (CLAPPER) #46: Mon May 13 20:51:50 CEST 2002     root@marble:/devel/netbsd/src-current/sys/arch/next68k/compile/CLAPPER next68k
arch/next68k/stand/boot/Makefile rev. 1.13

>Description:
	awk is used to generate the header for the boot program.  Since the
	header includes NUL-bytes, printf "\0" is used to generate those.
	This only works with gawk since most other awk implementations will
	only print strings upto a NUL character.

>How-To-Repeat:
	build boot program with awk=gawk and with awk=some other awk and
	notice the missing header (since the very first byte is NUL)

>Fix:
	change the awk script to output the header as '\0\0207\01\07...'
	and then use "| xargs printf" to generate the header.

Index: Makefile
===================================================================
RCS file: /cvsroot/syssrc/sys/arch/next68k/stand/boot/Makefile,v
retrieving revision 1.13
diff -u -r1.13 Makefile
--- Makefile	2002/05/12 15:18:27	1.13
+++ Makefile	2002/05/20 19:49:06
@@ -48,20 +48,20 @@
 STRIPFLAG=	# defined
 
 AWKPROG='\
-function x(v) { printf "\0%c%c%c", v / 65536, v / 256, v } \
+function x(v) { printf "\\0\\0%o\\0%o\\0%o", (v / 65536) % 256, (v / 256) % 256, v % 256 } \
 { \
-	printf "\0\207\01\07"; \
+	printf "\047\\0\\0207\\01\\07"; \
 	x($$1); \
 	x($$2); \
 	x($$3); \
-	printf "\0\0\0\0\04\070\0\0\0\0\0\0\0\0\0\0" \
+	printf "\\0\\0\\0\\0\\04\\070\\0\\0\\0\\0\\0\\0\\0\\0\\0\\0\047" \
 }'
 
 ${PROG}: srt0.o ${OBJS} ${LIBS}
 	${LD} -N -Ttext ${RELOC} -e start srt0.o ${OBJS} ${LIBS} -o $@.elf
 	@${SIZE} $@.elf
 	@${OBJCOPY} -O binary $@.elf $@.raw
-	@(${SIZE} $@.elf | tail +2 | awk ${AWKPROG} ; cat $@.raw) > $@
+	@(${SIZE} $@.elf | tail +2 | awk ${AWKPROG} | xargs printf ; cat $@.raw) > $@
 
 # startup
 
>Release-Note:
>Audit-Trail:
>Unformatted: