Added small check to Makefile in order to make markdown useable as de…

…pendency in other projects.

Makefile

@@ -1,16 +1,23 @@
 MIX = mix
 ERLANG_PATH = $(shell erl -eval 'io:format("~s", [lists:concat([code:root_dir(), "/erts-", erlang:system_info(version), "/include"])])' -s init stop -noshell)
-CFLAGS = -g -O3 -ansi -pedantic -Wall -Wextra -Wno-unused-parameter -Ideps/hoedown/src -I$(ERLANG_PATH)
+
+ifeq (, $(shell find . -name deps))
+	HOEDOWN_PATH = ../hoedown
+else
+	HOEDOWN_PATH = deps/hoedown
+endif
+
+CFLAGS = -g -O3 -ansi -pedantic -Wall -Wextra -Wno-unused-parameter -I$(HOEDOWN_PATH)/src -I$(ERLANG_PATH)
 
 HOEDOWN_OBJS=\
-	deps/hoedown/src/html.o \
-	deps/hoedown/src/html_smartypants.o \
-	deps/hoedown/src/html_blocks.o \
-	deps/hoedown/src/buffer.o \
-	deps/hoedown/src/autolink.o \
-	deps/hoedown/src/stack.o \
-	deps/hoedown/src/escape.o \
-	deps/hoedown/src/markdown.o
+	$(HOEDOWN_PATH)/src/html.o \
+	$(HOEDOWN_PATH)/src/html_smartypants.o \
+	$(HOEDOWN_PATH)/src/html_blocks.o \
+	$(HOEDOWN_PATH)/src/buffer.o \
+	$(HOEDOWN_PATH)/src/autolink.o \
+	$(HOEDOWN_PATH)/src/stack.o \
+	$(HOEDOWN_PATH)/src/escape.o \
+	$(HOEDOWN_PATH)/src/markdown.o
 
 ifneq ($(OS),Windows_NT)
 	CFLAGS += -fPIC
@@ -28,11 +35,10 @@ markdown:
 	$(MIX) compile
 
 priv/markdown.so: src/markdown.c
-	$(MAKE) -C deps/hoedown libhoedown.a
+	$(MAKE) -C $(HOEDOWN_PATH)
 	$(CC) $(CFLAGS) -shared $(LDFLAGS) -o $@ $(HOEDOWN_OBJS) src/markdown.c
 
 clean:
 	$(MIX) clean
-	$(MAKE) -C deps/hoedown clean
-	$(RM) deps/hoedown/libhoedown.a
+	$(MAKE) -C $(HOEDOWN_PATH) clean
 	$(RM) priv/markdown.so