Fix Rmd build tooling

.Rbuildignore

@@ -7,7 +7,8 @@
 ^run\.R$
 ^\.gitignore$
 ^res$
-^tools$
 ^man-roxygen$
 ^\.travis\.yml$
 ^staticdocs$
+^R/.*\.Rmd1$
+^R/.*\.html$

.Rinstignore

@@ -0,0 +1,2 @@
+^tools$
+^Rmd$

Makefile

@@ -0,0 +1,15 @@
+purl = Rscript --no-restore --no-save tools/purl.R "$(1)" "$(2)"
+
+rfiles := $(patsubst Rmd/%.Rmd,R/%.R,$(wildcard Rmd/*.Rmd))
+rhtmlfiles := $(patsubst Rmd/%.Rmd,Rmd/%.html,$(wildcard Rmd/*.Rmd))
+rmdfiles := $(wildcard Rmd/*.Rmd)
+
+all: $(rfiles)
+
+R/%.R: Rmd/%.Rmd
+	$(call purl,$^,$@)
+
+clean:
+	rm -f $(rfiles) $(rhtmlfiles)
+
+.PHONY: all clean

R/Makefile

@@ -1,12 +0,0 @@
-purl = Rscript --no-restore --no-save ../tools/purl.R "$(1)" "$(2)"
-
-rfiles := $(patsubst %.Rmd,%.R,$(wildcard *.Rmd))
-rmdfiles := $(wildcard *.Rmd)
-
-all: $(rfiles)
-
-%.R: %.Rmd
-	$(call purl,$^,$@)
-
-clean:
-	rm -f $(rfiles)

src/Makefile

@@ -1,2 +1,2 @@
 all:
-	cd ../R && $(MAKE)
+	cd ../ && $(MAKE)