diff --git a/scons/crossmingw.py b/scons/crossmingw.py
index 609cd00418e..b2efccea7e8 100644
--- a/scons/crossmingw.py
+++ b/scons/crossmingw.py
@@ -128,9 +128,9 @@ def generate(env):
         if not path: 
             path = []
         if SCons.Util.is_String(path):
-            path = string.split(path, os.pathsep)
+            path = str.split(path, os.pathsep)
 
-        env['ENV']['PATH'] = string.join([dir] + path, os.pathsep)
+        env['ENV']['PATH'] = str.join(os.pathsep, [dir] + path)
 
     # Most of mingw is the same as gcc and friends...
     gnu_tools = ['gcc', 'g++', 'gnulink', 'ar', 'gas']
diff --git a/scons/custom.py b/scons/custom.py
index 8028990ef61..d2576ae9ddb 100644
--- a/scons/custom.py
+++ b/scons/custom.py
@@ -262,8 +262,13 @@ def parse_source_list(env, filename, names=None):
     sym_table = parser.parse(src.abspath)
 
     if names:
-        if isinstance(names, basestring):
-            names = [names]
+        import sys
+        if sys.version_info[0] >= 3:
+            if isinstance(names, str):
+                names = [names]
+        else:
+            if isinstance(names, basestring):
+                names = [names]
 
         symbols = names
     else:
diff --git a/scons/gallium.py b/scons/gallium.py
index 72d8604169e..9381f804a31 100755
--- a/scons/gallium.py
+++ b/scons/gallium.py
@@ -132,7 +132,7 @@ def check_cc(env, cc, expr, cpp_opt = '-E'):
     sys.stdout.write('Checking for %s ... ' % cc)
 
     source = tempfile.NamedTemporaryFile(suffix='.c', delete=False)
-    source.write('#if !(%s)\n#error\n#endif\n' % expr)
+    source.write(('#if !(%s)\n#error\n#endif\n' % expr).encode())
     source.close()
 
     # sys.stderr.write('%r %s %s\n' % (env['CC'], cpp_opt, source.name));
diff --git a/src/freedreno/vulkan/tu_extensions.py b/src/freedreno/vulkan/tu_extensions.py
index 0a45b859e2b..dbb3a72d71e 100644
--- a/src/freedreno/vulkan/tu_extensions.py
+++ b/src/freedreno/vulkan/tu_extensions.py
@@ -79,7 +79,7 @@ EXTENSIONS = [
 
 class VkVersion:
     def __init__(self, string):
-        split = string.split('.')
+        split = str.split('.')
         self.major = int(split[0])
         self.minor = int(split[1])
         if len(split) > 2:
diff --git a/src/intel/vulkan/anv_extensions.py b/src/intel/vulkan/anv_extensions.py
index dad49a1e564..60f97dd3e08 100644
--- a/src/intel/vulkan/anv_extensions.py
+++ b/src/intel/vulkan/anv_extensions.py
@@ -186,7 +186,7 @@ for i in range(len(EXTENSIONS) - 1):
 
 class VkVersion:
     def __init__(self, string):
-        split = string.split('.')
+        split = str.split('.')
         self.major = int(split[0])
         self.minor = int(split[1])
         if len(split) > 2: