diff --git a/.gitignore b/.gitignore
index 3c99caf..46409b0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 Makefile
 libopengles-*.so
-librustopengles.dummy
\ No newline at end of file
+librustopengles.dummy
+/doc
diff --git a/Makefile.in b/Makefile.in
index 0e99dd7..321be71 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -3,6 +3,9 @@ VPATH=%VPATH%
 RUSTC ?= rustc
 RUSTFLAGS ?=
 EXT_DEPS ?=
+RUSTDOC ?= rustdoc
+RUSTDOC_FLAGS ?=
+RUSTDOC_TARGET ?= doc
 
 ifeq ($(shell uname -s),Darwin)
 ifeq ($(shell sw_vers | grep -c 10.6),1)
@@ -26,6 +29,12 @@ libopengles.dummy: lib.rs $(RUST_SRC) $(EXT_DEPS)
 opengles-test: lib.rs $(RUST_SRC)
 	$(RUSTC) $(RUSTFLAGS) $< -o $@ --test
 
+.PHONY: doc
+doc: $(RUSTDOC_TARGET)/opengles/index.html
+
+$(RUSTDOC_TARGET)/opengles/index.html: lib.rs $(RUST_SRC) $(EXT_DEPS)
+	$(RUSTDOC) $(RUSTDOC_FLAGS) $< -o $(RUSTDOC_TARGET)
+
 .PHONY: check
 check: opengles-test
 	./opengles-test $(TEST)