bitbake: fetch2: Print SCMs list when SRCREV_FORMAT is not set

This makes it easier to debug, especially when multipe SCMs like gitsm,
otherwise we don't know why there are multiple SCMs.

(Bitbake rev: 313fe5e86b254eadfdead706be4bd7b274d5e3c0)

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/bitbake/lib/bb/fetch2/__init__.py b/bitbake/lib/bb/fetch2/__init__.py
index f5a5928311..26ad388eb7 100644
--- a/bitbake/lib/bb/fetch2/__init__.py
+++ b/bitbake/lib/bb/fetch2/__init__.py
@@ -777,7 +777,8 @@ def get_srcrev(d, method_name='sortable_revision'):
     #
     format = d.getVar('SRCREV_FORMAT')
     if not format:
-        raise FetchError("The SRCREV_FORMAT variable must be set when multiple SCMs are used.")
+        raise FetchError("The SRCREV_FORMAT variable must be set when multiple SCMs are used.\n"\
+                         "The SCMs are:\n%s" % '\n'.join(scms))
 
     name_to_rev = {}
     seenautoinc = False