sanity: Add warning for local hasheqiv server with remote sstate mirrors

We're seeing a lot of users configuring an sstate mirror but not realising that
the default hash equivalenve setting will make this ineffective. Add a warning
to highlight this to the user for the common case.

(From OE-Core rev: ae4eb33b5a6a037348e8f66e3d4f19b58dba8fa2)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/meta/classes/sanity.bbclass b/meta/classes/sanity.bbclass
index 92807dc88e..be956fbcd6 100644
--- a/meta/classes/sanity.bbclass
+++ b/meta/classes/sanity.bbclass
@@ -914,6 +914,11 @@ def check_sanity_everybuild(status, d):
                     mirror_base = urllib.parse.urlparse(mirror[:-1*len('/PATH')]).path
                     check_symlink(mirror_base, d)
 
+    # Check sstate mirrors aren't being used with a local hash server and no remote
+    hashserv = d.getVar("BB_HASHSERVE")
+    if d.getVar("SSTATE_MIRRORS") and hashserv and hashserv.startswith("unix://") and not d.getVar("BB_HASHSERVE_UPSTREAM"):
+        bb.warn("You are using a local hash equivalence server but have configured an sstate mirror. This will likely mean no sstate will match from the mirror. You may wish to disable the hash equivalence use (BB_HASHSERVE), or use a hash equivalence server alongside the sstate mirror.")
+
     # Check that TMPDIR hasn't changed location since the last time we were run
     tmpdir = d.getVar('TMPDIR')
     checkfile = os.path.join(tmpdir, "saved_tmpdir")