Use rebar for building GeoCouch

Instead of using Emake, use rebar to build GeoCouch.
This will make it easier for future dependencies.
The output directory for the beam files changed from "build"
to "ebin".

Change-Id: Idbe9e2ef4197e5886f7ed6627d3689c9f530714f
Reviewed-on: http://review.couchbase.org/9825
Reviewed-by: Filipe David Borba Manana <fdmanana@gmail.com>
Tested-by: Filipe David Borba Manana <fdmanana@gmail.com>

.gitignore

@@ -6,3 +6,4 @@ erl_crash.dump
 coverage
 *.tar.gz
 tmp
+ebin

Makefile

@@ -1,38 +1,27 @@
 ERL=erl
 VERSION=$(shell git describe)
+# Output ERL_COMPILER_OPTIONS env variable
+COMPILER_OPTIONS=$(shell $(ERL) -noinput +B -eval 'Options = case os:getenv("ERL_COMPILER_OPTIONS") of false -> []; Else -> {ok,Tokens,_} = erl_scan:string(Else ++ "."),{ok,Term} = erl_parse:parse_term(Tokens), Term end, io:format("~p~n", [[{i, "${COUCH_SRC}"}] ++ Options]), halt(0).')
+COMPILER_OPTIONS_MAKE_CHECK=$(shell $(ERL) -noinput +B -eval 'Options = case os:getenv("ERL_COMPILER_OPTIONS") of false -> []; Else -> {ok,Tokens,_} = erl_scan:string(Else ++ "."),{ok,Term} = erl_parse:parse_term(Tokens), Term end, io:format("~p~n", [[{i, "${COUCH_SRC}"},{d, makecheck}] ++ Options]), halt(0).')
 
-all: builddir compile
+all: compile
 
 compile:
-	@$(ERL) -boot start_clean -pa build -noinput +B -eval 'case make:all([{i, "'${COUCH_SRC}'"}]) of up_to_date -> halt(0); error -> halt(1) end.'
+	ERL_COMPILER_OPTIONS='$(COMPILER_OPTIONS)' ./rebar compile
 
 compileforcheck:
-	@$(ERL) -boot start_clean -pa build -noinput +B -eval 'case make:all([{i, "'${COUCH_SRC}'"}, {d, makecheck}]) of up_to_date -> halt(0); error -> halt(1) end.'
-
-builddir:
-	@mkdir -p build
+	ERL_COMPILER_OPTIONS='$(COMPILER_OPTIONS_MAKE_CHECK)' ./rebar compile
 
 buildandtest: all test
 
 runtests:
-	ERL_FLAGS="-pa ${COUCH_SRC} -pa ${COUCH_SRC}/../etap -pa ${COUCH_SRC}/../snappy" prove ./test/*.t
-
-check: clean builddir compileforcheck runtests
-	rm -rf build
-	rm -f test/*.beam
-
-#coverage: compile
-#	mkdir -p coverage
-##	erl -noshell -pa build -pa ${COUCH_SRC} -pa /home/vmx/src/erlang/coverize/coverize/ebin -s vtree_bulk run_cover -s init stop
-#	erl -noshell -pa build -pa test/ebin -pa ${COUCH_SRC} -pa /home/vmx/src/erlang/coverize/coverize/ebin -s run_tests run_cover -s init stop
+	ERL_FLAGS="-pa ebin -pa ${COUCH_SRC} -pa ${COUCH_SRC}/../etap -pa ${COUCH_SRC}/../snappy" prove ./test/*.t
 
-cover: compile
-	@mkdir -p coverage
-	erl -noshell -pa build -pa ${COUCH_SRC} -eval 'cover:compile("src/vtree/vtree_bulk", [{i, "'${COUCH_SRC}'"}]),vtree_bulk:test(),cover:analyse_to_file(vtree_bulk, "coverage/vtree_bulk_coverage.html", [html]).' -s init stop;
+check: clean compileforcheck runtests
+	./rebar clean
 
 clean:
-	rm -rf build
-	rm -f test/*.beam
+	./rebar clean
 	rm -f *.tar.gz
 
 geocouch-$(VERSION).tar.gz:

README.md

@@ -73,12 +73,12 @@ Add the test to `<vanilla-couch>/share/www/script/couch_tests.js`
 The compiled beam files from GeoCouch need to be in Erlang's path,
 which can be set with the `ERL_FLAGS` environment variable:
 
-    export ERL_FLAGS="-pa <geocouch>/build"
+    export ERL_FLAGS="-pa <geocouch>/ebin"
 
 If you run a dev instance with CouchDB's `./utils/run` you can also
 define it on startup:
 
-    ERL_FLAGS="-pa <geocouch>/build" <vanilla-couch>/utils/run
+    ERL_FLAGS="-pa <geocouch>/ebin" <vanilla-couch>/utils/run
 
 
 Using GeoCouch

rebar.config

@@ -0,0 +1,4 @@
+{erl_opts, [
+    % Make sure test/gc_test_util.erl gets compiled
+    {src_dirs, ["test"]}
+]}.

src/geocouch.app.src

@@ -0,0 +1,8 @@
+{application, geocouch, [
+    {description, "GeoCouch - A spatial index for CouchDB"},
+    {vsn, "0.2.0"},
+    {modules, []},
+    {registered, []},
+    {applications, [kernel, stdlib]},
+    {env, []}
+]}.