getopt-rs(3): added getopt library for Rust

GNUmakefile

@@ -40,7 +40,7 @@ endif
 build: build_dir false intcmp scrut str strcmp true
 
 build_dir:
-	mkdir -p build/o build/lib build/bin
+	mkdir -p build/o build/lib build/bin build/test
 
 clean:
 	rm -rf build/
@@ -53,9 +53,10 @@ install: build
 	cp -f docs/*.1 $(PREFIX)/share/man/man1/
 	# cp -f docs/*.3 $(PREFIX)/share/man/man3/
 
-test: build
+test: build_dir tests/cc-compat.sh tests/posix-compat.sh src/getopt-rs/tests.rs
 	tests/cc-compat.sh
 	tests/posix-compat.sh
+	$(RUSTC) --test src/getopt-rs/lib.rs -o build/test/getopt
 
 false: src/false.rs build_dir
 	$(RUSTC) $(RUSTCFLAGS) -o build/bin/false src/false.rs
@@ -75,3 +76,6 @@ strcmp: src/strcmp.c build_dir
 true: src/true.rs build_dir
 	$(RUSTC) $(RUSTCFLAGS) -o build/bin/true src/true.rs
 
+libgetopt: src/getopt-rs/lib.rs
+	$(RUSTC) $(RUSTCFLAGS) --crate-type=lib --crate-name=getopt \
+		-o build/o/libgetopt.rlib src/lib.rs