Fix compilation warnings and prepare to be a dependency.

.gitignore

@@ -1,9 +1,12 @@
 *.beam
 *.so
 *.o
+*.d
 *.swp
-rebar
-ebin/
-.eunit
-.rebar/
-_build/
+/rebar
+/ebin/
+/.eunit/
+/.rebar/
+/_build/
+/compile_commands.json
+/geef

rebar.config

@@ -5,6 +5,9 @@
 {port_env, [
       {"DRV_LDFLAGS", "$DRV_LDFLAGS -lz -lgit2"},
 
+      %% fix rebar2 compilation for erlang-23 and above (replace automatic usage of -lerl_interface with -lei)
+      {"ERL_LDFLAGS", "-L$ERL_EI_LIBDIR -lei"},
+
       %% OS X Leopard flags for 64-bit
       {"darwin9.*-64$", "CXXFLAGS", "-m64"},
       {"darwin9.*-64$", "LDFLAGS", "-arch x86_64"},

src/geef_nif.erl

@@ -2,7 +2,7 @@
 %%% NIF functions, not to be used directly.
 
 -module(geef_nif).
--compile(export_all).
+-compile([export_all,nowarn_export_all]).
 
 -include("geef_records.hrl").
 
@@ -85,7 +85,7 @@ reflog_read(_Handle, _Name) ->
 reflog_delete(_Handle, _Name) ->
     ?NIF_FN.
 
-odb_object_exists(_Val, _Val) ->
+odb_object_exists(_Val1, _Val2) ->
     nif_error(?LINE).
 
 -spec odb_write(term(), iolist(), atom()) -> term().

test/config_test.erl

@@ -1,5 +1,5 @@
 -module(config_test).
--compile([export_all]).
+-compile([export_all,nowarn_export_all]).
 -include_lib("eunit/include/eunit.hrl").
 -include("src/geef_records.hrl").
 

test/pkt_test.erl

@@ -1,5 +1,5 @@
 -module(pkt_test).
--compile([export_all]).
+-compile([export_all,nowarn_export_all]).
 -include_lib("eunit/include/eunit.hrl").
 -include("src/geef_records.hrl").
 

test/ref_test.erl

@@ -1,5 +1,5 @@
 -module(ref_test).
--compile([export_all]).
+-compile([export_all,nowarn_export_all]).
 
 -include_lib("eunit/include/eunit.hrl").
 -include("src/geef_records.hrl").

test/repo_test.erl

@@ -1,5 +1,5 @@
 -module(repo_test).
--compile([export_all]).
+-compile([export_all,nowarn_export_all]).
 -include_lib("eunit/include/eunit.hrl").
 -include("src/geef_records.hrl").
 
@@ -117,7 +117,7 @@ commit_tree_test(Repo) ->
     CommitId = geef_oid:parse("bf968373f95f8fed2a24f9d25ebf06521359c6bc"),
     {ok, Commit} = geef_commit:lookup(Repo, CommitId),
     Resp = geef_commit:tree(Commit),
-    [?_assertMatch({ok, _}, Resp)].
+    [?_assertMatch({ok, _, _}, Resp)].
 
 rm_r(Path) ->
     case filelib:is_dir(Path) of

test/revwalk_test.erl

@@ -1,5 +1,5 @@
 -module(revwalk_test).
--compile([export_all]).
+-compile([export_all,nowarn_export_all]).
 -include_lib("eunit/include/eunit.hrl").
 
 repo_test_() ->