Makefile.patch

--- Makefile	2020-07-19 18:59:25.762342517 +0200
+++ Makefile.new	2020-07-19 19:08:29.938364903 +0200
@@ -89,12 +89,12 @@
 # Implementation specific settings
 #
 
-IMPLS = ada ada.2 awk bash basic bbc-basic c chuck clojure coffee common-lisp cpp crystal cs d dart \
-	elisp elixir elm erlang es6 factor fantom forth fsharp go groovy gnu-smalltalk \
+IMPLS = ada ada.2 awk bash basic bbc-basic c chuck clojure coffee common-lisp cpp crystal cs csharp cxx d dart \
+	elisp elixir elm erlang es6 factor fantom forth fsharp gambit go groovy gnu-smalltalk \
 	guile haskell haxe hy io java js jq julia kotlin livescript logo lua make mal \
 	matlab miniMAL nasm nim objc objpascal ocaml perl perl6 php picolisp pike plpgsql \
 	plsql powershell ps python python.2 r racket rexx rpython ruby rust scala scheme skew \
-	swift swift3 swift4 swift5 tcl ts vala vb vhdl vimscript wasm wren yorick xslt zig
+	sml swift swift3 swift4 swift5 tcl ts vala vb vhdl vimscript wasm wren yorick xslt zig
 
 EXTENSION = .mal
 
@@ -199,6 +199,8 @@
 cpp_STEP_TO_PROG =           impls/cpp/$($(1))
 crystal_STEP_TO_PROG =       impls/crystal/$($(1))
 cs_STEP_TO_PROG =            impls/cs/$($(1)).exe
+csharp_STEP_TO_PROG =        impls/csharp/$($(1))
+cxx_STEP_TO_PROG =           impls/cxx/$($(1))
 d_STEP_TO_PROG =             impls/d/$($(1))
 dart_STEP_TO_PROG =          impls/dart/$($(1)).dart
 elisp_STEP_TO_PROG =         impls/elisp/$($(1)).el
@@ -210,6 +212,7 @@
 fantom_STEP_TO_PROG =        impls/fantom/lib/fan/$($(1)).pod
 forth_STEP_TO_PROG =         impls/forth/$($(1)).fs
 fsharp_STEP_TO_PROG =        impls/fsharp/$($(1)).exe
+gambit_STEP_TO_PROG =        impls/gambit/$($(1)).scm
 go_STEP_TO_PROG =            impls/go/$($(1))
 groovy_STEP_TO_PROG =        impls/groovy/$($(1)).groovy
 gnu-smalltalk_STEP_TO_PROG = impls/gnu-smalltalk/$($(1)).st
@@ -255,6 +258,7 @@
 scala_STEP_TO_PROG =         impls/scala/target/scala-2.11/classes/$($(1)).class
 scheme_STEP_TO_PROG =        $(scheme_STEP_TO_PROG_$(scheme_MODE))
 skew_STEP_TO_PROG =          impls/skew/$($(1)).js
+sml_STEP_TO_PROG =           impls/sml/$($(1))
 swift_STEP_TO_PROG =         impls/swift/$($(1))
 swift3_STEP_TO_PROG =        impls/swift3/$($(1))
 swift4_STEP_TO_PROG =        impls/swift4/$($(1))