[PATCH V2] externalsrc.bbclass: introduce INHIBIT_SRCTREE_FILE_CHECKSUMES

[liu.ming50@gmail.com]

From: Ming Liu <liu.ming50@gmail.com>

It defaults to be '0', but it allows the developers to choose not add
file-checksums to do_compile for the entire source tree, by setting to
'1'.

We need this because we have a huge project with 100G bytes source
files, and we do not want them to be added to file-checksums variable
flag.

Signed-off-by: Ming Liu <liu.ming50@gmail.com>
---
 meta/classes/externalsrc.bbclass | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/meta/classes/externalsrc.bbclass b/meta/classes/externalsrc.bbclass
index c9f5cf7..2b83193 100644
--- a/meta/classes/externalsrc.bbclass
+++ b/meta/classes/externalsrc.bbclass
@@ -26,6 +26,7 @@
 
 SRCTREECOVEREDTASKS ?= "do_patch do_unpack do_fetch"
 EXTERNALSRC_SYMLINKS ?= "oe-workdir:${WORKDIR} oe-logs:${T}"
+INHIBIT_SRCTREE_FILE_CHECKSUMS ?= "0"
 
 python () {
     externalsrc = d.getVar('EXTERNALSRC')
@@ -212,7 +213,7 @@ def srctree_hash_files(d, srcdir=None):
         with open(oe_hash_file, 'w') as fobj:
             fobj.write(sha1)
         ret = oe_hash_file + ':True'
-    else:
+    elif not d.getVar('INHIBIT_SRCTREE_FILE_CHECKSUMS'):
         ret = s_dir + '/*:True'
     return ret
 
-- 
2.7.4