libxml2: don't override XML_CATALOG_FILES in xmllint wrapper if already set

The KDE build uses custom catalogs by setting XML_CATALOG_FILES, so this
wrapper should not override that value if it has already been set.

[RP: Add vardepsexclude since bitbake stores the expanded version of the variable
name in the siginfo data which would expand to a full build path in the native
case]

(From OE-Core rev: a6be6d307fbe69248b4905214712d67bfddf6b92)

Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/meta/recipes-core/libxml/libxml2_2.9.14.bb b/meta/recipes-core/libxml/libxml2_2.9.14.bb
index 2b2289e38a..a2ed8d71bc 100644
--- a/meta/recipes-core/libxml/libxml2_2.9.14.bb
+++ b/meta/recipes-core/libxml/libxml2_2.9.14.bb
@@ -121,7 +121,8 @@ do_install:append:class-native () {
         # Docs are not needed in the native case
         rm ${D}${datadir}/gtk-doc -rf
 
-        create_wrapper ${D}${bindir}/xmllint XML_CATALOG_FILES=${sysconfdir}/xml/catalog
+        create_wrapper ${D}${bindir}/xmllint 'XML_CATALOG_FILES=${XML_CATALOG_FILES:-${sysconfdir}/xml/catalog}'
 }
+do_install[vardepsexclude] += "XML_CATALOG_FILES:-${sysconfdir}/xml/catalog"
 
 BBCLASSEXTEND = "native nativesdk"