Update to rebar3 and add win32 support

rebar.config

@@ -6,17 +6,27 @@
 
 {deps, [{hex2bin, "1.0.0"}]}.
 
-{clean_files, [".eunit",
-               "ebin/*.beam"]}.
+{plugins, [pc]}.
+
+{provider_hooks, [
+    {pre, [
+        {compile, {pc, compile}},
+        {clean,   {pc, clean}}
+    ]}
+]}.
+
+{port_specs, [
+    {"priv/sha3_nif.so", [
+        "c_src/*.c"
+    ]}
+]}.
+
+{port_env, [
+    {"(linux|darwin)", "CFLAGS", "$CFLAGS -O2 -finline-functions -fomit-frame-pointer -fno-strict-aliasing -Wmissing-prototypes -Wall -std=c99"},
+    {"win32", "CFLAGS", "$CFLAGS /LD /O2 /DNDEBUG"}
+]}.
 
-{pre_hooks,
-  [{"(linux|darwin|solaris)", compile, "make -C c_src"},
-   {"(freebsd)", compile, "gmake -C c_src"}]}.
-{post_hooks,
-  [{"(linux|darwin|solaris)", clean, "make -C c_src clean"},
-   {"(freebsd)", clean, "gmake -C c_src clean"}]}.
 
 {eunit_opts, [{report,{eunit_surefire,[{dir,"."}]}}]}.
 
 {xref_checks, [fail_on_warning, undefined_function_calls]}.
-

src/sha3.erl

@@ -28,7 +28,7 @@ init() ->
                   Path ->
                       Path
               end,
-    erlang:load_nif(filename:join(PrivDir, "erlang-sha3"), 0).
+    erlang:load_nif(filename:join(PrivDir, sha3_nif), 0).
 
 %% @doc Returns a new context for hash operation.
 %%      Bit length of digest (`BitLen') must be one of 224, 256, 384 and 512.