sanity.bbclass: check for duplicates in PACKAGE_ARCHS

Duplicate entries in PACKAGE_ARCHS causes problems with rootfs
generation. For example multiple architecture entries in opkg.conf
will confuse the opkg package manager.

(From OE-Core rev: 06aca3de95483e5086b0231df070bac76a6e3c19)

Signed-off-by: Joshua Lock <josh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 13 insertions, 0 deletions

diff --git a/meta/classes/sanity.bbclass b/meta/classes/sanity.bbclass
index 6e13d2ac4d..639e1ea61a 100644
--- a/meta/classes/sanity.bbclass
+++ b/meta/classes/sanity.bbclass
@@ -338,6 +338,19 @@ def check_sanity(e):
     elif oeroot.find (' ') != -1:
         messages = messages + "Error, you have a space in your POKYBASE directory path. Please move Poky to a directory which doesn't include a space."
 
+    # Check that we don't have duplicate entries in PACKAGE_ARCHS
+    pkgarchs = data.getVar('PACKAGE_ARCHS', e.data, True)
+    seen = {}
+    dups = []
+
+    for pa in pkgarchs.split():
+        if seen.get(pa, 0) == 1:
+            dups.append(pa)
+        else:
+            seen[pa] = 1
+    if len(dups):
+       messages = messages + "Error, the PACKAGE_ARCHS variable contains duplicates. The following archs are listed more than once: %s" % " ".join(dups)
+
     if messages != "":
         raise_sanity_error(messages)