devtool: second fix for running from a different directory

Do not change change current working directory permanently, but, only
for the duration of tinfoil initialization instead. The previous fix
caused very unintuitive behavior where using relative paths were solved
with respect to the builddir instead of the current working directory.
E.g. calling "devtool extract zlib ./zlib" would always create create
srctree in ${TOPDIR}/zlib, independent of the users cwd.

(From OE-Core rev: 4c7f159b0e17a0475a4a4e9dc4dd012e3d2e6a1f)

(From OE-Core rev: 05060699e63cd25d089e83e9aa56c11d5baa8fd8)

Signed-off-by: Markus Lehtonen <markus.lehtonen@linux.intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 5 insertions, 1 deletions

diff --git a/scripts/lib/devtool/__init__.py b/scripts/lib/devtool/__init__.py
index f815ef27fa..7b1ab1110d 100644
--- a/scripts/lib/devtool/__init__.py
+++ b/scripts/lib/devtool/__init__.py
@@ -96,9 +96,12 @@ def exec_fakeroot(d, cmd, **kwargs):
             newenv[splitval[0]] = splitval[1]
     return subprocess.call("%s %s" % (fakerootcmd, cmd), env=newenv, **kwargs)
 
-def setup_tinfoil(config_only=False):
+def setup_tinfoil(config_only=False, basepath=None):
     """Initialize tinfoil api from bitbake"""
     import scriptpath
+    orig_cwd = os.path.abspath(os.curdir)
+    if basepath:
+        os.chdir(basepath)
     bitbakepath = scriptpath.add_bitbake_lib_path()
     if not bitbakepath:
         logger.error("Unable to find bitbake by searching parent directory of this script or PATH")
@@ -108,6 +111,7 @@ def setup_tinfoil(config_only=False):
     tinfoil = bb.tinfoil.Tinfoil()
     tinfoil.prepare(config_only)
     tinfoil.logger.setLevel(logger.getEffectiveLevel())
+    os.chdir(orig_cwd)
     return tinfoil
 
 def get_recipe_file(cooker, pn):