diff --git a/.gitignore b/.gitignore
index b7aeb08..c6ca53c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,9 +1,24 @@
 .jiffy.dev
-*.app
-*.beam
-*.o
-*.so
-.eunit
-deps
 erln8.config
 TEST-*.xml
+.rebar3
+_*
+.eunit
+*.o
+*.so
+*.beam
+*.plt
+*.swp
+*.swo
+.erlang.cookie
+ebin
+log
+erl_crash.dump
+.rebar
+_rel
+_deps
+_plugins
+_tdeps
+logs
+_build
+c_src/env.mk
diff --git a/Makefile b/Makefile
deleted file mode 100644
index 025486e..0000000
--- a/Makefile
+++ /dev/null
@@ -1,43 +0,0 @@
-REBAR?=./rebar
-
-
-all: build
-
-
-clean:
-	$(REBAR) clean
-	rm -rf logs
-	rm -rf .eunit
-	rm -f test/*.beam
-
-
-distclean: clean
-	git clean -fxd
-
-
-devmarker:
-	@touch .jiffy.dev
-
-
-depends: devmarker
-	@if test ! -d ./deps/proper; then \
-		$(REBAR) get-deps; \
-	fi
-
-
-build: depends
-	$(REBAR) compile
-
-
-eunit:
-	$(REBAR) eunit skip_deps=true
-
-
-check: build eunit
-
-
-%.beam: %.erl
-	erlc -o test/ $<
-
-
-.PHONY: all clean distclean depends build etap eunit check
diff --git a/c_src/Makefile b/c_src/Makefile
new file mode 100644
index 0000000..0c9f5f4
--- /dev/null
+++ b/c_src/Makefile
@@ -0,0 +1,66 @@
+?ERL= erl
+BASEDIR=$(CURDIR)
+PRIVDIR=$(BASEDIR)/../priv
+
+NIF_DIR=$(BASEDIR)
+NIF_ENV=$(BASEDIR)/env.mk
+
+NIF_SOURCES := $(shell find $(NIF_DIR) -type f \( -name "*.c" -o -name "*.cc" \))
+NIF_OBJS=$(addsuffix .o, $(basename $(NIF_SOURCES)))
+NIF_SO=$(PRIVDIR)/jiffy.so
+
+
+UNAME_SYS := $(shell uname -s)
+ifeq ($(UNAME_SYS), Darwin)
+	CC ?= cc
+	CFLAGS ?= -O3 -std=c99 -arch x86_64 -I. -Wall -Wmissing-prototypes
+	CXXFLAGS ?= -O3 -arch x86_64 -I. -Wall
+	LDFLAGS ?= -arch x86_64 -flat_namespace -undefined suppress
+else ifeq ($(UNAME_SYS), FreeBSD)
+	CC ?= cc
+	CFLAGS ?= -O3 -std=c99 -finline-functions -I. -Wall -Wmissing-prototypes
+	CXXFLAGS ?= -O3 -finline-functions -I. -Wall
+else ifeq ($(UNAME_SYS), Linux)
+	CC ?= g++
+	CFLAGS ?= -O3 -std=c99 -finline-functions -I. -Wall -Wmissing-prototypes
+	CXXFLAGS ?= -O3 -finline-functions -I. -Wall
+	LDFLAGS ?= -lstdc++
+endif
+
+CFLAGS += -fPIC -I$(ERTS_INCLUDE_DIR) -I$(ERL_INTERFACE_INCLUDE_DIR)
+CXXFLAGS += -fPIC -I$(ERTS_INCLUDE_DIR) -I$(ERL_INTERFACE_INCLUDE_DIR)
+LDLIBS += -L$(ERL_INTERFACE_LIB_DIR) -lerl_interface -lei
+LDFLAGS += -shared
+
+
+
+all: $(NIF_ENV) $(NIF_SO)
+
+clean:
+	@rm -rf $(NIF_SO) $(NIF_OBJS)
+
+distclean: clean
+	@rm -rf $(NIF_ENV)
+
+$(NIF_SO): $(NIF_OBJS)
+	@mkdir -p $(PRIVDIR)
+	$(CC) $(NIF_OBJS) $(LDFLAGS) $(LDLIBS) -o $(NIF_SO)
+
+%.o: %.c
+	@$(CC) -c $(CFLAGS) $(CPPFLAGS) $< -o $@
+
+%.o: %.cc
+	@$(CXX) $(CXXFLAGS) $(CPPFLAGS) -c $< -o $@
+
+$(NIF_ENV):
+	@$(ERL) -eval "file:write_file(\"$(NIF_ENV)\", \
+		io_lib:format( \
+		\"ERTS_INCLUDE_DIR ?= ~s/erts-~s/include/~n\" \
+		\"ERL_INTERFACE_INCLUDE_DIR ?= ~s~n\" \
+		\"ERL_INTERFACE_LIB_DIR ?= ~s~n\", \
+		[code:root_dir(), erlang:system_info(version), \
+		code:lib_dir(erl_interface, include), \
+		code:lib_dir(erl_interface, lib)])), \
+		halt()."
+
+-include $(NIF_ENV)
diff --git a/rebar.config b/rebar.config
index 9d26448..7f3503e 100644
--- a/rebar.config
+++ b/rebar.config
@@ -1,33 +1,3 @@
-{port_specs, [
-    {"priv/jiffy.so", [
-        "c_src/*.c",
-        "c_src/*.cc",
-        "c_src/double-conversion/*.cc"
-    ]}
-]}.
-
-{port_env, [
-    {"(linux|solaris|freebsd|netbsd|openbsd|dragonfly|darwin|gnu)",
-        "CFLAGS", "$CFLAGS -Ic_src/ -g -Wall -Werror -O3 -fno-strict-aliasing"},
-    {"(linux|solaris|freebsd|netbsd|openbsd|dragonfly|darwin|gnu)",
-        "CXXFLAGS", "$CXXFLAGS -Ic_src/ -g -Wall -Werror -O3"},
-
-    {"(linux|solaris|freebsd|netbsd|openbsd|dragonfly|darwin|gnu)",
-        "LDFLAGS", "$LDFLAGS -lstdc++"},
-
-    %% OS X Leopard flags for 64-bit
-    {"darwin9.*-64$", "CXXFLAGS", "-m64"},
-    {"darwin9.*-64$", "LDFLAGS", "-arch x86_64"},
-
-    %% OS X Snow Leopard flags for 32-bit
-    {"darwin10.*-32$", "CXXFLAGS", "-m32"},
-    {"darwin10.*-32$", "LDFLAGS", "-arch i386"},
-
-    %% This will merge into basho/rebar/rebar.config eventually
-    {"win32", "CFLAGS", "/Wall /DWIN32 /D_WINDOWS /D_WIN32 /DWINDOWS"},
-    {"win32", "CXXFLAGS", "-Ic_src/ -g -Wall -O3"}
-]}.
-
 {erl_opts, [
     {platform_define, "R1(1|2|3|4|5|6)", 'JIFFY_NO_MAPS'}
 ]}.
@@ -39,7 +9,16 @@
     }}
 ]}.
 
-{plugins, [
-    rebar_gdb_plugin
-]}.
 
+{profiles, [{dev,
+             [{deps, [
+                      {proper,
+                       {git, "git://github.com/manopapad/proper.git",
+                        {branch, "master"}}}
+                     ]}]}]}.
+
+{pre_hooks, [{"(linux|darwin|solaris)", compile, "make -C c_src"},
+             {"(freebsd|netbsd|openbsd)", compile, "gmake -C c_src"}]}.
+
+{post_hooks, [{"(linux|darwin|solaris)", clean, "make -C c_src clean"},
+              {"(freebsd|netbsd|openbsd)", compile, "gmake -C c_src clean"}]}.
diff --git a/rebar.config.script b/rebar.config.script
deleted file mode 100644
index 8a0049d..0000000
--- a/rebar.config.script
+++ /dev/null
@@ -1,37 +0,0 @@
-% This file is part of Jiffy released under the MIT license.
-% See the LICENSE file for more information.
-
-% Only include PropEr as a dependency when the JIFFY_DEV
-% environment variable is defined. This allows downstream
-% applications to avoid requiring PropEr.
-%
-% This script is based on the example provided with Rebar.
-
-ErlOpts = [{d, 'JIFFY_DEV'}],
-
-Proper = [
-    {proper, ".*", {git, "git://github.com/manopapad/proper.git", "master"}}
-],
-
-ConfigPath = filename:dirname(SCRIPT),
-DevMarker = filename:join([ConfigPath, ".jiffy.dev"]),
-
-case filelib:is_file(DevMarker) of
-    true ->
-        % Don't override existing dependencies
-        Config0 = case lists:keyfind(deps, 1, CONFIG) of
-            false ->
-                CONFIG ++ [{deps, Proper}];
-            {deps, DepsList} ->
-                lists:keyreplace(deps, 1, CONFIG, {deps, DepsList ++ Proper})
-        end,
-        Config1 = case lists:keyfind(erl_opts, 1, Config0) of
-            false ->
-                Config0 ++ [{erl_opts, ErlOpts}];
-            {erl_opts, Opts} ->
-                NewOpts = {erl_opts, Opts ++ ErlOpts},
-                lists:keyreplace(erl_opts, 1, Config0, NewOpts)
-        end;
-    false ->
-        CONFIG
-end.