package: Refactor to remove isElf/is_elf function duplication

There are probably further cleanups needed here but this at least removes
the major code duplication between these two similar funcitons, keeping the
kernel module ".ko" extension check for efficiency to avoid opening and
reading file contents in the general case.

(From OE-Core rev: 7ad0c0d6ab12bebeac097fc0f5210c876dcfe9be)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 4 insertions, 36 deletions

diff --git a/meta/classes/package.bbclass b/meta/classes/package.bbclass
index 94e4639a11..f121acccab 100644
--- a/meta/classes/package.bbclass
+++ b/meta/classes/package.bbclass
@@ -936,38 +936,6 @@ python split_and_strip_files () {
     sourcefile = d.expand("${WORKDIR}/debugsources.list")
     bb.utils.remove(sourcefile)
 
-    # Return type (bits):
-    # 0 - not elf
-    # 1 - ELF
-    # 2 - stripped
-    # 4 - executable
-    # 8 - shared library
-    # 16 - kernel module
-    def isELF(path):
-        type = 0
-        result = subprocess.check_output(["file", "-b", path], stderr=subprocess.STDOUT).decode("utf-8")
-
-        # Not stripped
-        if "ELF" in result:
-            type |= 1
-            if "not stripped" not in result:
-                type |= 2
-            if "executable" in result:
-                type |= 4
-            if "shared" in result:
-                type |= 8
-        return type
-
-    def isStaticLib(path):
-        if path.endswith('.a') and not os.path.islink(path):
-            with open(path, 'rb') as fh:
-                # The magic must include the first slash to avoid
-                # matching golang static libraries
-                magic = b'!<arch>\x0a/'
-                start = fh.read(len(magic))
-                return start == magic
-        return False
-
     #
     # First lets figure out all of the files we may have to process ... do this only once!
     #
@@ -987,7 +955,7 @@ python split_and_strip_files () {
                 if file.endswith(".ko") and file.find("/lib/modules/") != -1:
                     kernmods.append(file)
                     continue
-                if isStaticLib(file):
+                if oe.package.is_static_lib(file):
                     staticlibs.append(file)
                     continue
 
@@ -1017,14 +985,14 @@ python split_and_strip_files () {
                     # If it's a symlink, and points to an ELF file, we capture the readlink target
                     if cpath.islink(file):
                         target = os.readlink(file)
-                        if isELF(ltarget):
-                            #bb.note("Sym: %s (%d)" % (ltarget, isELF(ltarget)))
+                        if oe.package.is_elf(ltarget):
+                            #bb.note("Sym: %s (%d)" % (ltarget, oe.package.is_elf(ltarget)))
                             symlinks[file] = target
                         continue
 
                     # It's a file (or hardlink), not a link
                     # ...but is it ELF, and is it already stripped?
-                    elf_file = isELF(file)
+                    elf_file = oe.package.is_elf(file)
                     if elf_file & 1:
                         if elf_file & 2:
                             if 'already-stripped' in (d.getVar('INSANE_SKIP_' + pn) or "").split():