Added a shellcheck-static Makefile target

Makefile

@@ -1,6 +1,7 @@
 # TODO: Phase out Makefile in favor of Cabal
 
 GHCFLAGS=-O9
+GHCFLAGS_STATIC=$(GHCFLAGS) -optl-static -optl-pthread
 
 all: shellcheck .tests shellcheck.1
 	: Done
@@ -14,6 +15,7 @@ shellcheck: regardless
 	./test/runQuack && touch .tests
 
 shellcheck.1: shellcheck.1.md
+	: Formatting man page
 	pandoc -s -t man $< -o $@
 
 clean:
@@ -21,4 +23,8 @@ clean:
 	rm -f *.hi *.o ShellCheck/*.hi ShellCheck/*.o
 	rm -rf dist
 
+shellcheck-static: regardless
+	: Conditionally compiling a statically linked shellcheck-static
+	ghc $(GHCFLAGS_STATIC) --make shellcheck -o shellcheck-static
+
 regardless:

README.md

@@ -76,5 +76,8 @@ To build and run the tests, cd to the shellcheck source directory and:
 
     $ make
 
+If you want to distribute the binary and/or run it on other distros, you
+can `make shellcheck-static` to build a statically linked executable without
+library dependencies.
 
 Happy ShellChecking!