bitbake.conf: Add HOSTTOOLS_DIR for ${TMPDIR}/hosttools

The path to where to install and find the tools copied from the host
environment is already used in a couple of places. This warrants it to
get its own variable.

(From OE-Core rev: 8164c466943ffedff399009bf5547dba4f06d6c8)

Signed-off-by: Peter Kjellerstedt <peter.kjellerstedt@axis.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/base.bbclass

@@ -239,8 +239,8 @@ python base_eventhandler() {
         oe.utils.features_backfill("DISTRO_FEATURES", e.data)
         oe.utils.features_backfill("MACHINE_FEATURES", e.data)
         # Works with the line in layer.conf which changes PATH to point here
-        setup_hosttools_dir(d.expand('${TMPDIR}/hosttools'), 'HOSTTOOLS', d)
-        setup_hosttools_dir(d.expand('${TMPDIR}/hosttools'), 'HOSTTOOLS_NONFATAL', d, fatal=False)
+        setup_hosttools_dir(d.getVar('HOSTTOOLS_DIR'), 'HOSTTOOLS', d)
+        setup_hosttools_dir(d.getVar('HOSTTOOLS_DIR'), 'HOSTTOOLS_NONFATAL', d, fatal=False)
 
     if isinstance(e, bb.event.BuildStarted):
         localdata = bb.data.createCopy(e.data)

meta/conf/bitbake.conf

@@ -452,6 +452,9 @@ export PATH
 # Build utility info.
 ##################################################################
 
+# Directory where host tools are copied
+HOSTTOOLS_DIR = "${TMPDIR}/hosttools"
+
 # Tools needed to run builds with OE-Core
 HOSTTOOLS += " \
     [ ar as awk basename bash bzip2 cat chgrp chmod chown chrpath cmp cp cpio \

meta/conf/layer.conf

@@ -60,4 +60,4 @@ SIGGEN_EXCLUDE_SAFE_RECIPE_DEPS += " \
 "
 
 # We need to keep bitbake tools in PATH
-PATH := "${@os.path.dirname(bb.utils.which(d.getVar('PATH'),'bitbake'))}:${TMPDIR}/hosttools"
+PATH := "${@os.path.dirname(bb.utils.which(d.getVar('PATH'),'bitbake'))}:${HOSTTOOLS_DIR}"