>Number:         17012
>Category:       toolchain
>Synopsis:       crunchgen makefiles can't be reused "incrementally"
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    toolchain-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri May 24 17:21:00 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Luke Mewburn
>Release:        NetBSD 1.6_BETA1
>Organization:
>Environment:
System: NetBSD argo.mewburn.net 1.6_BETA1 NetBSD 1.6_BETA1 (ARGO from GENERIC-$Revision: 1.491 $) #0: Thu May 23 23:22:19 EST 2002 lukem@argo.mewburn.net:/var/scratch/obj.i386/usr/src/sys/arch/i386/compile/ARGO i386
Architecture: i386
Machine: i386
>Description:

	A little while ago Bill Sommerfeld made the following change
	to crunchgen(8):

	revision 1.37
	date: 2002/05/02 21:18:31;  author: sommerfeld;  state: Exp;  lines: +35 -34
	Some tweaks to (hopefully) make the crunchgen-generated makefile
	parallel-build-safe.

	Unfortunately, that breaks compiles when target Makefiles do stuff
	like "CPPFLAGS+=-I.", and you restart a compile of a crunchgenned
	program (that may have been interrupted or failed or whatever)
	and that program has an include file built in the ${.OBJDIR}.
	The CPPFLAGS don't get added, and the source files won't compile.

	See
		http://releng.netbsd.org/ab/M_hp300/hp300.relse.1022198400.txt
	for an example error.

>How-To-Repeat:
	See above.

>Fix:
	Back out revision 1.37.
	That will break parallel builds (make -j N, where N > 1) though.
>Release-Note:
>Audit-Trail:
>Unformatted: