commit 521fc081802282bac261c3639e9c77fe131f1d42
from: Sören Tempel <soeren+git@soeren-tempel.net>
via: Dan Cross <crossd@gmail.com>
date: Wed Jul 27 14:15:51 2022 UTC

lib9: pass $PLAN9_TARGET via CPP for get9root fallback value

Allows this function to always return the proper path in situations
where the $PLAN9 environment variable is not set, i.e. a rc login shell.

commit - f7b572818c7617065ef0877870caee060db90a30
commit + 521fc081802282bac261c3639e9c77fe131f1d42
blob - 07e2872c512d288ea454c0ceb2bedb040e33ddd3
blob + 3e7b10501f4142d7f2ee3f3dac41f1d1601d2300
--- src/lib9/get9root.c
+++ src/lib9/get9root.c
@@ -11,7 +11,6 @@ get9root(void)
 
 	if((s = getenv("PLAN9")) != 0)
 		return s;
-	/* could do better - search $PATH */
-	s = "/usr/local/plan9";
+	s = PLAN9_TARGET;
 	return s;
 }
blob - db267dfed587aa96952ee1c3dda1e01833e04a1b
blob + ed4315ff4f390f25ea3c7ceff0aa78332eae8cf5
--- src/lib9/mkfile
+++ src/lib9/mkfile
@@ -175,6 +175,9 @@ HFILES=\
 %.$O: utf/%.c
 	$CC $CFLAGS utf/$stem.c
 
+get9root.$O: get9root.c
+	$CC $CFLAGS -DPLAN9_TARGET=\"$PLAN9_TARGET\" get9root.c
+
 XLIB=$PLAN9/lib/$LIB
 
 testfmt: testfmt.$O $XLIB
blob - dfccd36944829290c85e9e0fd2afad1ab6373526
blob + 8971864892ebcf1c9b6abbb48357cad2486d9a73
--- src/mkmk.sh
+++ src/mkmk.sh
@@ -36,7 +36,7 @@ echo cd `pwd`
 9c  exitcode.c
 9c  fcallfmt.c
 9c  frand.c
-9c  get9root.c
+9c  -DPLAN9_TARGET=\"$PLAN9_TARGET\" get9root.c
 9c  getcallerpc.c
 9c  getenv.c
 9c  getfields.c