I've had no problems under OpenBSD on an Ultra5 and Ultra60 since
at least 9base-6. Only significant change required was using
the base system's yacc.
Without patching 9yacc, compilation dies here:
YACC awkgram.y
Bus error
*** Error code 138
Stop in /home/sl/src/9base/awk (line 14 of ../yacc.mk).
*** Error code 1
Stop in /home/sl/src/9base/awk (line 8 of ../yacc.mk).
*** Error code 1
Stop in /home/sl/src/9base (line 59 of Makefile).
-sl
diff -r a63b332dda6d config.mk
--- a/config.mk Wed Jan 05 16:21:08 2011 +0000
+++ b/config.mk Wed Jan 05 22:36:38 2011 -0600
@@ -2,12 +2,13 @@
# paths
PREFIX = /usr/local/plan9
-MANPREFIX = ${PREFIX}/share/man
+MANPREFIX = ${PREFIX}/man
VERSION = 7
-OBJTYPE = 386
+#OBJTYPE = 386
#OBJTYPE = arm
#OBJTYPE = x86_64
+OBJTYPE = sun4u
# Linux/BSD
#CFLAGS += -Wall -Wno-missing-braces -Wno-parentheses -Wno-switch -c -I.
-DPREFIX="\"${PREFIX}\""
diff -r a63b332dda6d yacc/9yacc
--- a/yacc/9yacc Wed Jan 05 16:21:08 2011 +0000
+++ b/yacc/9yacc Wed Jan 05 22:23:05 2011 -0600
@@ -1,4 +1,5 @@
#!/bin/sh
PLAN9="`pwd`/.."
export PLAN9
-../yacc/yacc $*
+#../yacc/yacc $*
+/usr/bin/yacc $*
