devtool: force use of bash when running build within extensible SDK

Ubuntu's default dash shell causes oe-init-build-env to behave a bit
differently - (a) it can't pick up the OE root directory and (b) it
can't see any build directory specified as a command-line argument
(since dash doesn't pass through any arguments specified to sourced
scripts). We could work around these but doing so requires some internal
knowledge of the script; a much simpler fix is just to force running the
command under bash since it's expected to be installed on every distro.

Thanks to Chen Qi <Qi.Chen@windriver.com> for this fix.

Fixes [YOCTO #7614].

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/scripts/lib/devtool/__init__.py b/scripts/lib/devtool/__init__.py
index 3f8158e24a..78ae0aabc8 100644
--- a/scripts/lib/devtool/__init__.py
+++ b/scripts/lib/devtool/__init__.py
@@ -30,6 +30,11 @@ def exec_build_env_command(init_path, builddir, cmd, watch=False, **options):
     if not 'cwd' in options:
         options["cwd"] = builddir
     if init_path:
+        # As the OE init script makes use of BASH_SOURCE to determine OEROOT,
+        # and can't determine it when running under dash, we need to set
+        # the executable to bash to correctly set things up
+        if not 'executable' in options:
+            options['executable'] = 'bash'
         logger.debug('Executing command: "%s" using init path %s' % (cmd, init_path))
         init_prefix = '. %s %s > /dev/null && ' % (init_path, builddir)
     else: