BUILDDIR=build
SRCDIR=parts

VPATH = $(SRCDIR)

STL_TARGETS = $(patsubst $(SRCDIR)/%.scad,$(BUILDDIR)/%.stl,$(wildcard $(SRCDIR)/*.scad))

all: $(STL_TARGETS)

$(BUILDDIR)/%.stl: %.scad
	mkdir -p ${BUILDDIR}
	openscad -o $@ $^