diff -Naur a/setup.py b/setup.py
--- a/setup.py	2020-04-23 08:20:55.742402600 +0300
+++ b/setup.py	2020-09-22 08:29:43.065243208 +0300
@@ -211,13 +211,21 @@
 py_modules = []
 packages = ["efl"]
 common_cflags = [
-    "-fno-var-tracking-assignments", # seems to lower the mem used during build
-    "-Wno-misleading-indentation", # not needed (we don't indent the C code)
-    "-Wno-deprecated-declarations", # we bind deprecated functions
-    "-Wno-unused-variable", # eo_instance_from_object() is unused
-    "-Wno-format-security", # some cc don't like the way cython use EINA_LOG macros
-    # "-Werror", "-Wfatal-errors" # use this to stop build on first warnings
+    "-fno-var-tracking-assignments",  # seems to lower the mem used during build
+    "-Wno-misleading-indentation",  # not needed (we don't indent the C code)
+    "-Wno-deprecated-declarations",  # we bind deprecated functions
+    "-Wno-unused-variable",  # eo_instance_from_object() is unused
+    "-Wno-format-security",  # some cc don't like the way cython use EINA_LOG macros
+    # "-Werror", "-Wfatal-errors"  # use this to stop build on first warnings
 ]
+# remove clang unknown flags
+if os.getenv("CC") == "clang":
+    common_cflags.remove('-fno-var-tracking-assignments')
+if os.getenv("CC") == "x86_64-pc-linux-gnu-clang":
+    common_cflags.remove('-fno-var-tracking-assignments')
+if os.getenv("CC") == "i686-pc-linux-gnu-clang":
+    common_cflags.remove('-fno-var-tracking-assignments')
+
 
 if set(("build", "build_ext", "install", "bdist", "sdist")) & set(sys.argv):
     sys.stdout.write("Python-EFL: %s\n" % RELEASE)