staticx: Ignore problem stripping binaries

Older versions of patchelf (including the latest release, 0.9) can render
binaries unable to be stripped. Provided strip only replaces the input
binary if it is successful, we can safely hide and ignore this error.

See NixOS/patchelf#117

staticx/archive.py

@@ -57,7 +57,10 @@ def _prepare(self, path):
 
         if self.strip:
             logging.info("Stripping binary {}".format(dst))
-            strip_elf(dst)
+            try:
+                strip_elf(dst)
+            except ToolError as e:
+                pass
 
         return dst
 

staticx/elf.py

@@ -58,7 +58,11 @@ def run(self, *args):
                     stderr_ignore = [
                         b'working around a Linux kernel bug by creating a hole',
                     ])
-tool_strip      = ExternTool('strip', 'binutils')
+tool_strip      = ExternTool('strip', 'binutils',
+                    stderr_ignore = [
+                        'Not enough room for program headers, try linking with -N',
+                        '[.note.ABI-tag]: Bad value',
+                    ])
 
 def get_shobj_deps(path):
     output = tool_ldd.run(path)