META information for why3.extract

configure.in

@@ -364,8 +364,10 @@ fi
 
 if test "$enable_zarith" = yes; then
    BIGINTLIB=zarith
+   BIGINTPKG=zarith
 else
    BIGINTLIB=nums
+   BIGINTPKG=num
 fi
 
 # checking for camlzip
@@ -731,6 +733,7 @@ AC_SUBST(META_OCAMLGRAPH)
 AC_SUBST(enable_zarith)
 AC_SUBST(BIGINTINCLUDE)
 AC_SUBST(BIGINTLIB)
+AC_SUBST(BIGINTPKG)
 
 AC_SUBST(enable_zip)
 AC_SUBST(ZIPINCLUDE)

lib/why3/META.in

@@ -3,3 +3,11 @@ version = "@VERSION@"
 archive(byte) = "why3.cma"
 archive(native) = "why3.cmxa"
 requires = "str unix num dynlink @ZIPLIB@"
+
+package "extract" (
+  description = "Why3 support library for extracted code"
+  version = "@VERSION@"
+  requires = "@BIGINTPKG@"
+  archive(byte) = "why3extract.cma"
+  archive(native) = "why3extract.cmxa"
+)