I needed the following changes to build plex86 in a separate build directory.
? =dif
Index: kernel/dt/Makefile.in
===================================================================
RCS file: /cvsroot-plex86/plex86/kernel/dt/Makefile.in,v
retrieving revision 1.2
diff -u -r1.2 Makefile.in
--- kernel/dt/Makefile.in 2001/05/24 18:54:18 1.2
+++ kernel/dt/Makefile.in 2001/06/08 04:04:53
@@ -50,7 +50,7 @@
KLDFLAGS = $(KLDFLAGS_@HOSTOS@)
-ALL_CFLAGS = $(CFLAGS) $(KCFLAGS_@HOSTOS@) -I../include -I../..
+ALL_CFLAGS = $(CFLAGS) $(KCFLAGS_@HOSTOS@) -I$(srcdir)/../include -I../..
+-I$(srcdir)/../..
.c.o:
Index: kernel/emulation/Makefile.in
===================================================================
RCS file: /cvsroot-plex86/plex86/kernel/emulation/Makefile.in,v
retrieving revision 1.8
diff -u -r1.8 Makefile.in
--- kernel/emulation/Makefile.in 2001/06/04 21:23:34 1.8
+++ kernel/emulation/Makefile.in 2001/06/08 04:04:54
@@ -51,7 +51,7 @@
KLDFLAGS = $(KLDFLAGS_@HOSTOS@)
-ALL_CFLAGS = $(CFLAGS) $(KCFLAGS_@HOSTOS@) -I../include -I../..
+ALL_CFLAGS = $(CFLAGS) $(KCFLAGS_@HOSTOS@) -I$(srcdir)/../include -I../..
+-I$(srcdir)/../..
.c.o:
Index: kernel/iodev/Makefile.in
===================================================================
RCS file: /cvsroot-plex86/plex86/kernel/iodev/Makefile.in,v
retrieving revision 1.1
diff -u -r1.1 Makefile.in
--- kernel/iodev/Makefile.in 2001/06/07 15:40:56 1.1
+++ kernel/iodev/Makefile.in 2001/06/08 04:04:54
@@ -50,7 +50,7 @@
KLDFLAGS = $(KLDFLAGS_@HOSTOS@)
-ALL_CFLAGS = $(CFLAGS) $(KCFLAGS_@HOSTOS@) -I../include -I../..
+ALL_CFLAGS = $(CFLAGS) $(KCFLAGS_@HOSTOS@) -I$(srcdir)/../include -I../..
+-I$(srcdir)/../..
.c.o:
