added cpp version, sh version as backup

Makefile

@@ -5,33 +5,42 @@ BINDIR   ?= $(PREFIX)/bin
 MANDIR   ?= $(PREFIX)/share/man/man1
 DOCDIR   ?= $(PREFIX)/share/doc/sfm
 
+CXX      ?= g++
+CXXFLAGS ?= -std=c++17 -O2 -Wall -Wextra
+LDFLAGS  ?= -lncursesw
+
 INSTALL  ?= install
 RM       ?= rm -f
 
 .PHONY: all install uninstall clean
 
-all:
-	@echo "sfm is a shell script — nothing to build."
-	@echo "Run 'make install' to install."
+all: sfm
 
-install:
+sfm: sfm.cpp
+	$(CXX) $(CXXFLAGS) -o $@ $< $(LDFLAGS)
+
+install: all
 	@echo "Installing sfm to $(DESTDIR)$(BINDIR)/sfm ..."
 	$(INSTALL) -d $(DESTDIR)$(BINDIR)
 	$(INSTALL) -m 755 sfm $(DESTDIR)$(BINDIR)/sfm
+	@echo "Installing sfm.sh to $(DESTDIR)$(BINDIR)/sfm.sh ..."
+	$(INSTALL) -m 755 sfm.sh $(DESTDIR)$(BINDIR)/sfm.sh
 	@echo "Installing man page to $(DESTDIR)$(MANDIR)/sfm.1 ..."
 	$(INSTALL) -d $(DESTDIR)$(MANDIR)
 	$(INSTALL) -m 644 sfm.1 $(DESTDIR)$(MANDIR)/sfm.1
 	@echo "Installing README to $(DESTDIR)$(DOCDIR)/README ..."
 	$(INSTALL) -d $(DESTDIR)$(DOCDIR)
 	$(INSTALL) -m 644 README $(DESTDIR)$(DOCDIR)/README
-	@echo "Done. Run 'sfm' to start, or 'man sfm' for help."
+	@echo "Done."
 
 uninstall:
 	@echo "Removing sfm ..."
 	$(RM) $(DESTDIR)$(BINDIR)/sfm
+	$(RM) $(DESTDIR)$(BINDIR)/sfm.sh
 	$(RM) $(DESTDIR)$(MANDIR)/sfm.1
 	$(RM) -r $(DESTDIR)$(DOCDIR)
 	@echo "Done."
 
 clean:
-	@echo "Nothing to clean."
+	$(RM) sfm
+	@echo "Cleaned."