bitbake: fetch2/git: show SRCREV and git repo in error message about fixed SRCREV

* in recipe with 17 git repos in SRC_URI I've accidentally pasted one SRCREV to
  be one character shorter and because fetcher uses:
    if not ud.revisions[name] or len(ud.revisions[name]) != 40  or (False in [c in "abcdef0123456789" for c in ud.revisions[name]]):
  to decide which SRCREV values are fixed SRCREVs this one was
  considered as tag or branch name, because it was only 39 chars long

  The original error message wasn't very helpful as it doesn't show
  which repo or which SRCREV was considered missing:

  do_fetch: Bitbake Fetcher Error: FetchError("Recipe uses a floating tag/branch without a fixed SRCREV yet doesn't call bb.fetch2.get_srcrev() (use SRCPV in PV for OE).", None)

  with SRCPV included in PV as error recomments it's a bit better:

  bb.data_smart.ExpansionError: Failure expanding variable SRCPV, expression was ${@bb.fetch2.get_srcrev(d)} which triggered exception FetchError: Fetcher failure: Unable to resolve '0a92994d729ff76a58f692d3028ca1b64b145d9' in upstream git repository in git ls-remote output for github.com/Maratyszcza/FP16
  The variable dependency chain for the failure is: SRCPV -> PV -> WORKDIR -> T

  with this change the first error will read:

  do_fetch: Bitbake Fetcher Error: FetchError("Recipe uses a floating tag/branch '0a92994d729ff76a58f692d3028ca1b64b145d9' for repo 'github.com/Maratyszcza/FP16' without a fixed SRCREV yet doesn't call bb.fetch2.get_srcrev() (use SRCPV in PV for OE).", None)

(Bitbake rev: 9bbdedc0ba7ca819b898e2a29a151d6a2014ca11)

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/bitbake/lib/bb/fetch2/git.py b/bitbake/lib/bb/fetch2/git.py
index 5fff6966ae..4e286ca96f 100644
--- a/bitbake/lib/bb/fetch2/git.py
+++ b/bitbake/lib/bb/fetch2/git.py
@@ -736,7 +736,7 @@ class Git(FetchMethod):
         Compute the HEAD revision for the url
         """
         if not d.getVar("__BBSEENSRCREV"):
-            raise bb.fetch2.FetchError("Recipe uses a floating tag/branch without a fixed SRCREV yet doesn't call bb.fetch2.get_srcrev() (use SRCPV in PV for OE).")
+            raise bb.fetch2.FetchError("Recipe uses a floating tag/branch '%s' for repo '%s' without a fixed SRCREV yet doesn't call bb.fetch2.get_srcrev() (use SRCPV in PV for OE)." % (ud.unresolvedrev[name], ud.host+ud.path))
 
         # Ensure we mark as not cached
         bb.fetch2.get_autorev(d)