[src/trunk]: src/compat/dirshack a hack to force the top-level compat objdir ...

[mrg <mrg%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/795a67a23578
branches:  trunk
changeset: 749940:795a67a23578
user:      mrg <mrg%NetBSD.org@localhost>
date:      Sun Dec 13 09:25:57 2009 +0000

description:
a hack to force the top-level compat objdir to be created before the
library ones are.  the Makefile has a long description of what's
really going on here.

diffstat:

 compat/dirshack/Makefile |  30 ++++++++++++++++++++++++++++++
 1 files changed, 30 insertions(+), 0 deletions(-)

diffs (34 lines):

diff -r 7cc806b065c7 -r 795a67a23578 compat/dirshack/Makefile
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/compat/dirshack/Makefile  Sun Dec 13 09:25:57 2009 +0000
@@ -0,0 +1,30 @@
+#      $NetBSD: Makefile,v 1.1 2009/12/13 09:25:57 mrg Exp $
+
+# hacky method to get compat multilib base objdirs created before
+# make tries to go create the subdirs used for builds.
+
+# the problem is that make handles objdir creation for subdirs before it
+# handles this current directory, so when make cd's into $arch/$libtype
+# and from there into the ../../lib dirs, it ends up setting the forced
+# MAKEOBJDIRPREFIX to something based upon ${.CURDIR}, since the objdir
+# doesn't exist yet.
+# 
+# our solution is simple - from this Makefile we traverse the same list
+# of $arch/$libtype's with "BOOTSTRAP_SUBDIR=".  then the compat/Makefile
+# handles these subdirs as normal, with the base objdir created.
+
+.include <bsd.own.mk>
+
+.if ${MKCOMPAT} != "no"
+.if make(obj)
+
+.include "../archdirs.mk"
+
+MAKEDIRTARGETENV=      BOOTSTRAP_SUBDIRS=
+
+SUBDIR=        ${ARCHDIR_SUBDIR:C/^/..\//}
+
+.endif # make(obj)
+.endif # MKCOMPAT != no
+
+.include <bsd.subdir.mk>