diff --git a/.gitignore b/.gitignore
index 0a55e9e..9896d82 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,7 @@
 .Rproj.user
 *.Rproj
+*.Rcheck
+*.tar.gz
 inst/doc
 vignettes/getting_started
 *.html
diff --git a/Makefile b/Makefile
index 5713ea6..72d56fc 100644
--- a/Makefile
+++ b/Makefile
@@ -1,17 +1,7 @@
-.PHONY : build clean
+.PHONY : build
 
-build : build/gptoolsStan
-
-build/gptoolsStan :
-# Update documentation.
+build :
 	Rscript -e 'devtools::document()'
-# Clean up an potential previous builds and create a clean directory.
-	rm -rf build && mkdir -p build
-# Build, check, and extract the package.
-	cd build \
-		&& NOT_CRAN=true R CMD build .. \
-		&& R CMD check --as-cran *.tar.gz \
-		&& tar -xf *.tar.gz
-
-clean :
-	rm -rf build
+	rm -f *.tar.gz
+	NOT_CRAN=true R CMD build .
+	R CMD check --as-cran *.tar.gz