gamate \
lynx \
nes \
+ none \
osic1p \
pce \
sim6502 \
ifndef TARGET
-datadir = $(prefix)/share/cc65
+datadir = $(PREFIX)/share/cc65
all lib: $(TARGETS)
define INSTALL_recipe
-$(if $(prefix),,$(error variable `prefix' must be set))
+$(if $(PREFIX),,$(error variable "PREFIX" must be set))
$(INSTALL) -d $(DESTDIR)$(datadir)/$(dir)
$(INSTALL) -m0644 ../$(dir)/*.* $(DESTDIR)$(datadir)/$(dir)