[gnome-continuous-yocto/gnomeostree-3.28-rocko: 176/218] uninative: Add compatiblity version check

[Emmanuele Bassi <ebassi src gnome org>]

commit cca8bde9d700d68c5f36d7d4c47c048526aedfc0
Author: Richard Purdie <richard purdie linuxfoundation org>
Date:   Wed Mar 14 09:52:18 2018 -0700

    uninative: Add compatiblity version check
    
    If glibc is newer on the host than in uninative, the failure mode is
    pretty nasty for clusters where the sstate is shared, including the Yocto
    Project autobuilder.
    
    This check aborts the use of uninative in such scenarios where a newer
    glibc version appears and avoids corruption of sstate caches.
    
    We use ldd to check the glibc version since that is included in libc-bin
    (or equivalent) which locales use so it should always be present.
    
    (From OE-Core rev: 7dccdf82d49fb11cb2a7cb205ae08311e5d43291)
    
    Signed-off-by: Richard Purdie <richard purdie linuxfoundation org>

 meta/classes/uninative.bbclass               |    7 +++++++
 meta/conf/distro/include/yocto-uninative.inc |    2 ++
 2 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/meta/classes/uninative.bbclass b/meta/classes/uninative.bbclass
index 670efa9..1723364 100644
--- a/meta/classes/uninative.bbclass
+++ b/meta/classes/uninative.bbclass
@@ -77,6 +77,11 @@ python uninative_event_fetchloader() {
                 except FileExistsError:
                     pass
 
+        # ldd output is "ldd (Ubuntu GLIBC 2.23-0ubuntu10) 2.23", extract last option from first line
+        glibcver = subprocess.check_output(["ldd", "--version"]).decode('utf-8').split('\n')[0].split()[-1]
+        if bb.utils.vercmp_string(d.getVar("UNINATIVE_MAXGLIBCVERSION"), glibcver) < 0:
+            raise RuntimeError("Your host glibc verson (%s) is newer than that in uninative (%s). Disabling 
uninative so that sstate is not corrupted." % (glibcver, d.getVar("UNINATIVE_MAXGLIBCVERSION")))
+
         cmd = d.expand("\
 mkdir -p ${UNINATIVE_STAGING_DIR}-uninative; \
 cd ${UNINATIVE_STAGING_DIR}-uninative; \
@@ -94,6 +99,8 @@ ${UNINATIVE_STAGING_DIR}-uninative/relocate_sdk.py \
 
         enable_uninative(d)
 
+    except RuntimeError as e:
+        bb.warn(str(e))
     except bb.fetch2.BBFetchException as exc:
         bb.warn("Disabling uninative as unable to fetch uninative tarball: %s" % str(exc))
         bb.warn("To build your own uninative loader, please bitbake uninative-tarball and set 
UNINATIVE_TARBALL appropriately.")
diff --git a/meta/conf/distro/include/yocto-uninative.inc b/meta/conf/distro/include/yocto-uninative.inc
index b3f8c24..cd5fc0b 100644
--- a/meta/conf/distro/include/yocto-uninative.inc
+++ b/meta/conf/distro/include/yocto-uninative.inc
@@ -6,6 +6,8 @@
 # to the distro running on the build machine.
 #
 
+UNINATIVE_MAXGLIBCVERSION = "2.27"
+
 UNINATIVE_URL ?= "http://downloads.yoctoproject.org/releases/uninative/1.8/";
 UNINATIVE_CHECKSUM[i686] ?= "427ce522ec97f65c75fd89587d90ef789e8cbca4a617abc4b5822abb01c2d0ae"
 UNINATIVE_CHECKSUM[x86_64] ?= "de4947e98e09e1432d069311cc2093974ecb9138a714fd5466f73524de66a693"