Move port executable linking to rebar post compile hook

Makefile

@@ -1,16 +1,5 @@
-CC = gcc
-CFLAGS = -g -O2 -Wall
-ERLANG_LIBS = -lerl_interface -lei -lpthread
-
-BCRYPTLIBS = c_src/bcrypt_port.o c_src/bcrypt.o c_src/blowfish.o
-
 all: compile
 
-compile_port: priv/bcrypt
-
-priv/bcrypt: $(BCRYPTLIBS)
-	$(CC) $(CFLAGS) $(BCRYPTLIBS) $(ERLANG_LIBS) -o $@
-
 compile:
 	@ ./rebar compile
 

rebar.config

@@ -1,8 +1,15 @@
 %% -*- mode: erlang;erlang-indent-level: 2;indent-tabs-mode: nil -*-
-{so_name, "bcrypt_nif.so"}.
-{port_sources, ["c_src/blowfish.c", "c_src/bcrypt.c", "c_src/bcrypt_nif.c"]}.
+{so_specs,
+ [{"priv/bcrypt_nif.so",
+   ["c_src/blowfish.c", "c_src/bcrypt.c", "c_src/bcrypt_nif.c"]},
+  {"priv/bcrypt_port.so",
+   ["c_src/bcrypt_port.c"]}]}.
 
 {erl_opts, [debug_info]}.
 
-{pre_hooks, [{clean, "rm -f priv/bcrypt c_src/bcrypt_port.o"},
-             {compile, "make compile_port"}]}.
+{pre_hooks,  [{clean, "rm -f priv/bcrypt c_src/bcrypt_port.o"}]}.
+{post_hooks,
+ [{compile,
+   "gcc -g -O2 -Wall c_src/bcrypt_port.o c_src/bcrypt.o"
+   " c_src/blowfish.o -lerl_interface -lei -lpthread"
+   " -o priv/bcrypt"}]}.