package.bbclass: Add '-b' option to file call in isELF

The isELF function works by running:

   result = file <pathname>
   if 'ELF' in result

By default 'file' will prepend the result with the path name of the file
that is being checked.  This usually works fine, such as:

$ file /home/foo/openembedded-core/meta/classes/package.bbclass
/home/foo/openembedded-core/meta/classes/package.bbclass: Python script, ASCII text executable, with very long lines

However, if the path includes 'ELF', ELF will end up in the result, and then
the check will return positive.

$ file /home/ELF/openembedded-core/meta/classes/package.bbclass
/home/ELF/openembedded-core/meta/classes/package.bbclass: Python script, ASCII text executable, with very long lines

This will then result in the isELF coming back true, and possibly causing the
checks that use isELF, such as the 'is it already stripped' check, to do the
incorrect thing.

Adding the '-b' option to file will result in the path being omitted in the
result:

$ file /home/ELF/openembedded-core/meta/classes/package.bbclass
Python script, ASCII text executable, with very long lines

(From OE-Core rev: b6d5729a0f0e6f2c8b36d425a18e9e2ed26f5de0)

Signed-off-by: Mark Hatle <mark.hatle@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
(cherry picked from commit 5a324e9b2cf6378f8eaa4e394f9cb36d4e2680ac)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 2 insertions, 2 deletions

diff --git a/meta/classes/package.bbclass b/meta/classes/package.bbclass
index e68299e10c..2a5d8a5cda 100644
--- a/meta/classes/package.bbclass
+++ b/meta/classes/package.bbclass
@@ -901,7 +901,7 @@ python split_and_strip_files () {
     # 16 - kernel module
     def isELF(path):
         type = 0
-        ret, result = oe.utils.getstatusoutput("file '%s'" % path)
+        ret, result = oe.utils.getstatusoutput("file -b '%s'" % path)
 
         if ret:
             msg = "split_and_strip_files: 'file %s' failed" % path
diff --git a/meta/lib/oe/package.py b/meta/lib/oe/package.py
index 1e5c3aa8e1..599fca60f8 100644
--- a/meta/lib/oe/package.py
+++ b/meta/lib/oe/package.py
@@ -73,7 +73,7 @@ def strip_execs(pn, dstdir, strip_cmd, libdir, base_libdir, qa_already_stripped=
     def is_elf(path):
         exec_type = 0
         ret, result = oe.utils.getstatusoutput(
-            "file \"%s\"" % path.replace("\"", "\\\""))
+            "file -b \"%s\"" % path.replace("\"", "\\\""))
 
         if ret:
             bb.error("split_and_strip_files: 'file %s' failed" % path)