Add a utility to extract a message catalogs

Makefile

@@ -1,12 +1,14 @@
 SHELL = /bin/sh
 CC = clang
-CFLAGS = -ggdb -Wall -Wextra -std=c99
+# -Wunused-function is pretty annoying here, as everything is static and not
+# all parts of common.c are used in all the executables
+CFLAGS = -ggdb -Wall -Wextra -std=c99 -Wno-unused-function
 # -lpthread is only there for debugging (gdb & errno)
 LDFLAGS = `pkg-config --libs libssl` -lpthread
 
 .PHONY: all clean
 
-targets = zyklonb kike
+targets = zyklonb kike kike.msg
 
 all: $(targets)
 
@@ -15,6 +17,9 @@ clean:
 
 zyklonb: src/zyklonb.c src/common.c src/siphash.c
 	$(CC) src/zyklonb.c src/siphash.c -o $@ $(CFLAGS) $(LDFLAGS)
+
 kike: src/kike.c src/common.c src/siphash.c
 	$(CC) src/kike.c src/siphash.c -o $@ $(CFLAGS) $(LDFLAGS)
+kike.msg: src/kike.c
+	$(SHELL) kike-extract-messages.sh < $< > $@