1 files changed, 90 insertions, 0 deletions
diff --git a/AppPkg/Applications/Python/Python-2.7.2/Tools/freeze/checkextensions.py b/AppPkg/Applications/Python/Python-2.7.2/Tools/freeze/checkextensions.py
new file mode 100644
index 0000000000..20b73b9325
--- /dev/null
+++ b/AppPkg/Applications/Python/Python-2.7.2/Tools/freeze/checkextensions.py
@@ -0,0 +1,90 @@
+# Check for a module in a set of extension directories.
+# An extension directory should contain a Setup file
+# and one or more .o files or a lib.a file.
+
+import os
+import parsesetup
+
+def checkextensions(unknown, extensions):
+    files = []
+    modules = []
+    edict = {}
+    for e in extensions:
+        setup = os.path.join(e, 'Setup')
+        liba = os.path.join(e, 'lib.a')
+        if not os.path.isfile(liba):
+            liba = None
+        edict[e] = parsesetup.getsetupinfo(setup), liba
+    for mod in unknown:
+        for e in extensions:
+            (mods, vars), liba = edict[e]
+            if not mods.has_key(mod):
+                continue
+            modules.append(mod)
+            if liba:
+                # If we find a lib.a, use it, ignore the
+                # .o files, and use *all* libraries for
+                # *all* modules in the Setup file
+                if liba in files:
+                    break
+                files.append(liba)
+                for m in mods.keys():
+                    files = files + select(e, mods, vars,
+                                           m, 1)
+                break
+            files = files + select(e, mods, vars, mod, 0)
+            break
+    return files, modules
+
+def select(e, mods, vars, mod, skipofiles):
+    files = []
+    for w in mods[mod]:
+        w = treatword(w)
+        if not w:
+            continue
+        w = expandvars(w, vars)
+        for w in w.split():
+            if skipofiles and w[-2:] == '.o':
+                continue
+            # Assume $var expands to absolute pathname
+            if w[0] not in ('-', '$') and w[-2:] in ('.o', '.a'):
+                w = os.path.join(e, w)
+            if w[:2] in ('-L', '-R') and w[2:3] != '$':
+                w = w[:2] + os.path.join(e, w[2:])
+            files.append(w)
+    return files
+
+cc_flags = ['-I', '-D', '-U']
+cc_exts = ['.c', '.C', '.cc', '.c++']
+
+def treatword(w):
+    if w[:2] in cc_flags:
+        return None
+    if w[:1] == '-':
+        return w # Assume loader flag
+    head, tail = os.path.split(w)
+    base, ext = os.path.splitext(tail)
+    if ext in cc_exts:
+        tail = base + '.o'
+        w = os.path.join(head, tail)
+    return w
+
+def expandvars(str, vars):
+    i = 0
+    while i < len(str):
+        i = k = str.find('$', i)
+        if i < 0:
+            break
+        i = i+1
+        var = str[i:i+1]
+        i = i+1
+        if var == '(':
+            j = str.find(')', i)
+            if j < 0:
+                break
+            var = str[i:j]
+            i = j+1
+        if vars.has_key(var):
+            str = str[:k] + vars[var] + str[i:]
+            i = k
+    return str