tools: Support GNU objdump (from MSYS2) on defcheck.py

tools/defcheck.py

@@ -29,7 +29,7 @@ Needs the tool "nm", "objdump" or "dumpbin" to work
 
 """
 
-import os, sys, subprocess, shutil
+import os, sys, subprocess, shutil, glob
 
 from os import getenv, path
 
@@ -72,6 +72,9 @@ for df in def_files:
    basename, extension = name.split (".")
 
    libname = path.join(os.getcwd(), directory, libprefix + basename + "-*" + libextension)
+   matches = glob.glob(libname)
+   if matches:
+     libname = matches[0]
    #FIXME: This leaks to ninja stdout, which should not happen
    #print ("platform: " + sys.platform + " - extracting symbols from " + libname)
 
@@ -119,10 +122,13 @@ for df in def_files:
       found = False
       nmsymbols = ""
       for s in objnm:
-         if s == " Ordinal      RVA  Name":
+         if "Ordinal   Hint Name" in s or " Ordinal      RVA  Name" in s:
             found = True
          elif found:
-            nmsymbols += s
+            s = s.strip()
+            if not s:
+               break
+            nmsymbols += " 0 0 " + s.split()[-1] # Keep the [2::3] logic happy
          # else: skip this line
 
    else: # Windows MSVC