packaged-staging: basic support for pulling staging packages from a mirror

Add simple support for trying to fetch staging packages from a http, https  or
ftp mirror if they do not already exist in PSTAGE_DIR.

As documented in local.conf.sample
"Poky can try and fetch packaged-staging packages from a http, https or ftp
mirror. Set this variable to the root of a pstage directory on a server."

If the PSTAGE_MIRROR variable is not set, or the package cannot be found on
the mirror it will be built as usual.

Signed-off-by: Joshua Lock <josh@linux.intel.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/build/conf/local.conf.sample b/build/conf/local.conf.sample
index 149c73d664..14af548efd 100644
--- a/build/conf/local.conf.sample
+++ b/build/conf/local.conf.sample
@@ -159,3 +159,7 @@ ENABLE_BINARY_LOCALE_GENERATION = "1"
 # on an x86_64 host.
 # Supported values are i586 and x86_64
 #SDKMACHINE="i586"
+
+# Poky can try and fetch packaged-staging packages from a http, https or ftp
+# mirror. Set this variable to the root of a pstage directory on a server.
+#PSTAGE_MIRROR ?= "http://someserver.tld/share/pstage"