add include library: taler_signatures.ml

include/dune

@@ -0,0 +1,39 @@
+(library
+ (name include)
+ ; (wrapped false)
+ (modules taler_signatures)
+ (libraries))
+
+(rule
+ (targets taler_signatures.ml)
+ (deps ./gen_taler_signatures.exe)
+ (action
+  (with-stdout-to
+   %{targets}
+   (run ./gen_taler_signatures.exe))))
+
+(executable
+ (name gen_taler_signatures)
+ (modules gen_taler_signatures data)
+ (libraries fmt angstrom))
+
+(rule
+ (targets taler_signatures.h)
+ (action
+  (run
+   wget
+   -q
+   -O
+   %{targets}
+   "https://git.taler.net/exchange.git/plain/src/include/taler/taler_signatures.h")))
+
+(rule
+ (targets data.ml)
+ (deps taler_signatures.h)
+ (action
+  (with-stdout-to
+   %{targets}
+   (progn
+    (echo "let content = {|")
+    (cat taler_signatures.h)
+    (echo "|}")))))