Merge branch 'master' into rename-jbuilder-dune

src/configurator/v1.ml

@@ -61,6 +61,24 @@ module Temp = struct
     dir
 end
 
+module Flags = struct
+  let extract_words = String.extract_words
+
+  let extract_comma_space_separated_words =
+    String.extract_comma_space_separated_words
+
+  let extract_blank_separated_words = String.extract_blank_separated_words
+
+  let write_lines fname s =
+    let path = Path.of_string fname in
+    Io.write_lines path s
+
+  let write_sexp fname s =
+    let path = Path.in_source fname in
+    let sexp = Usexp.List (List.map s ~f:(fun s -> Usexp.Quoted_string s)) in
+    Io.write_file path (Usexp.to_string sexp ~syntax:Dune)
+end
+
 module Find_in_path = struct
   let path_sep =
     if Sys.win32 then
@@ -485,18 +503,13 @@ module Pkg_config = struct
       None
 end
 
-let write_flags fname s =
-  let path = Path.in_source fname in
-  let sexp = Usexp.List (List.map s ~f:(fun s -> Usexp.Quoted_string s)) in
-  Io.write_file path (Usexp.to_string sexp ~syntax:Dune)
-
 let main ?(args=[]) ~name f =
   let ocamlc  = ref (
     match Sys.getenv "DUNE_CONFIGURATOR" with
     | s -> Some s
     | exception Not_found ->
-      die "Configurator scripts must be ran with jbuilder. \
-           To manually run a script, use $ jbuilder exec."
+      die "Configurator scripts must be run with Dune. \
+           To manually run a script, use $ dune exec."
   ) in
   let verbose = ref false in
   let dest_dir = ref None in

src/configurator/v1.mli

@@ -87,10 +87,32 @@ module Pkg_config : sig
   val query : t -> package:string -> package_conf option
 end with type configurator := t
 
-val write_flags : string -> string list -> unit
-(** [write_flags fname s] write the list of strings [s] to the file
-   [fname] in an appropriate format so that it can used in jbuild
-   files with "(:include [fname])". *)
+module Flags : sig
+
+  val write_sexp : string -> string list -> unit
+  (** [write_sexp fname s] writes the list of strings [s] to the file [fname] in
+      an appropriate format so that it can used in jbuild files with [(:include
+      [fname])]. *)
+
+  val write_lines : string -> string list -> unit
+  (** [write_lines fname s] writes the list of string [s] to the file [fname]
+      with one line per string so that it can be used in Dune action rules with
+      [%{read-lines:<path>}]. *)
+
+  val extract_comma_space_separated_words : string -> string list
+  (** [extract_comma_space_separated_words s] returns a list of words in
+      [s] that are separated by a newline, tab, space or comma character. *)
+
+  val extract_blank_separated_words : string -> string list
+  (** [extract_blank_separated_words s] returns a list of words in [s]
+      that are separated by a tab or space character. *)
+
+  val extract_words : string -> is_word_char:(char -> bool) -> string list
+  (** [extract_words s ~is_word_char] will split the string [s] into
+      a list of words.  A valid word character is defined by the [is_word_char]
+      predicate returning true and anything else is considered a separator.
+      Any blank words are filtered out of the results. *)
+end
 
 (** Typical entry point for configurator programs *)
 val main

src/pform.ml

@@ -30,6 +30,7 @@ module Macro = struct
     | Read_strings
     | Read_lines
     | Path_no_dep
+    | Ocaml_config
 end
 
 type 'a t =
@@ -77,6 +78,7 @@ module Map = struct
     ; "findlib", renamed_in ~version:(1, 0) ~new_name:"lib"
 
     ; "path-no-dep", deleted_in ~version:(1, 0) Path_no_dep
+    ; "ocaml-config", macro Ocaml_config
     ]
     |> String.Map.of_list_exn
 
@@ -126,18 +128,7 @@ module Map = struct
       ; "profile"        , string context.profile
       ]
     in
-    let ocaml_config =
-      List.map (Ocaml_config.to_list context.ocaml_config) ~f:(fun (k, v) ->
-        ("ocaml-config:" ^ k,
-         match (v : Ocaml_config.Value.t) with
-         | Bool   x -> string (string_of_bool x)
-         | Int    x -> string (string_of_int x)
-         | String x -> string x
-         | Words  x -> strings x
-         | Prog_and_args x -> strings (x.prog :: x.args)))
-    in
-    [ ocaml_config
-    ; static_vars
+    [ static_vars
     ; lowercased
     ; uppercased
     ; vars

src/pform.mli

@@ -22,6 +22,7 @@ module Macro : sig
     | Read_strings
     | Read_lines
     | Path_no_dep
+    | Ocaml_config
 end
 
 type 'a t =

src/super_context.ml

@@ -47,6 +47,7 @@ type t =
   ; cxx_flags                        : string list
   ; vars                             : Pform.Var.t Pform.Map.t
   ; macros                           : Pform.Macro.t Pform.Map.t
+  ; ocaml_config                     : Value.t list String.Map.t
   ; chdir                            : (Action.t, Action.t) Build.t
   ; host                             : t option
   ; libs_by_package : (Package.t * Lib.Set.t) Package.Name.Map.t
@@ -99,20 +100,36 @@ let expand_macro t ~syntax_version ~var =
     Exn.code_error "expand_macro can't expand variables"
       [ "var", String_with_vars.Var.sexp_of_t var ]
 
+let expand t ~syntax_version ~var =
+  match
+    match String_with_vars.Var.destruct var with
+    | Var _ -> Left (expand_vars t ~syntax_version ~var)
+    | Macro (_, _) -> Right (expand_macro t ~syntax_version ~var)
+  with
+  | Right None
+  | Left None -> None
+  | Right (Some x) -> Some (Right x)
+  | Left (Some x) -> Some (Left x)
+
 let (expand_vars_string, expand_vars_path) =
   let expand t ~scope ~dir ?(extra_vars=String.Map.empty) s =
     String_with_vars.expand ~mode:Single ~dir s ~f:(fun var syntax_version ->
-      match expand_vars t ~syntax_version ~var with
+      match expand t ~syntax_version ~var with
       | None ->
         String.Map.find extra_vars (String_with_vars.Var.full_name var)
-      | Some v ->
+      | Some (Left v) ->
         begin match Pform.Var.to_value_no_deps_or_targets ~scope v with
         | Some _ as v -> v
         | None ->
           Loc.fail (String_with_vars.Var.loc var)
             "Variable %a is not allowed in this context"
             String_with_vars.Var.pp var
-        end)
+        end
+      | Some (Right Ocaml_config) ->
+        String.Map.find t.ocaml_config (String_with_vars.Var.name var)
+      | Some (Right _) ->
+        Loc.fail (String_with_vars.Var.loc var)
+          "This percent form isn't allowed in this position")
   in
   let expand_vars t ~scope ~dir ?extra_vars s =
     expand t ~scope ~dir ?extra_vars s
@@ -290,6 +307,19 @@ let create
       ~f:(fun s -> not (String.is_prefix s ~prefix:"-std="))
   in
   let vars = Pform.Map.create_vars ~context ~cxx_flags in
+  let ocaml_config =
+    let string s = [Value.String s] in
+    Ocaml_config.to_list context.ocaml_config
+    |> List.map  ~f:(fun (k, v) ->
+      ( k
+      , match (v : Ocaml_config.Value.t) with
+      | Bool          x -> string (string_of_bool x)
+      | Int           x -> string (string_of_int x)
+      | String        x -> string x
+      | Words         x -> Value.L.strings x
+      | Prog_and_args x -> Value.L.strings (x.prog :: x.args)))
+    |> String.Map.of_list_exn
+  in
   let t =
     { context
     ; host
@@ -305,6 +335,7 @@ let create
     ; cxx_flags
     ; vars
     ; macros = Pform.Map.macros
+    ; ocaml_config
     ; chdir = Build.arr (fun (action : Action.t) ->
         match action with
         | Chdir _ -> action
@@ -597,6 +628,7 @@ module Action = struct
       let key = String_with_vars.Var.full_name var in
       begin match expand_macro sctx ~syntax_version ~var with
       | Some Pform.Macro.Exe -> Some (path_exp (map_exe (Path.relative dir s)))
+      | Some Ocaml_config -> String.Map.find sctx.ocaml_config s
       | Some Dep -> Some (path_exp (Path.relative dir s))
       | Some Bin -> begin
           let sctx = host sctx in

test/blackbox-tests/dune.inc

@@ -436,6 +436,14 @@
    test-cases/null-dep
    (progn (run %{exe:cram.exe} -test run.t) (diff? run.t run.t.corrected)))))
 
+(alias
+ (name ocaml-config-macro)
+ (deps (package dune) (source_tree test-cases/ocaml-config-macro))
+ (action
+  (chdir
+   test-cases/ocaml-config-macro
+   (progn (run %{exe:cram.exe} -test run.t) (diff? run.t run.t.corrected)))))
+
 (alias
  (name ocaml-syntax)
  (deps (package dune) (source_tree test-cases/ocaml-syntax))
@@ -698,6 +706,7 @@
   (alias multiple-private-libs)
   (alias no-installable-mode)
   (alias null-dep)
+  (alias ocaml-config-macro)
   (alias ocaml-syntax)
   (alias ocamldep-multi-stanzas)
   (alias odoc)
@@ -773,6 +782,7 @@
   (alias misc)
   (alias no-installable-mode)
   (alias null-dep)
+  (alias ocaml-config-macro)
   (alias ocaml-syntax)
   (alias ocamldep-multi-stanzas)
   (alias output-obj)

test/blackbox-tests/test-cases/macro-expand-error/run.t

@@ -4,5 +4,5 @@ inappropariate place:
   $ dune build
   Info: creating file dune-project with this contents: (lang dune 1.0)
   File "dune", line 1, characters 14-21:
-  Error: macros of the form %{name:..} cannot be expanded here
+  Error: This percent form isn't allowed in this position
   [1]

test/blackbox-tests/test-cases/ocaml-config-macro/dune

@@ -0,0 +1,3 @@
+(rule
+ (targets x)
+ (action (with-stdout-to %{targets} (echo %{ocaml-config:system}))))

test/blackbox-tests/test-cases/ocaml-config-macro/dune-project

@@ -0,0 +1 @@
+(lang dune 1.0)

test/blackbox-tests/test-cases/ocaml-config-macro/run.t

@@ -0,0 +1,4 @@
+%{ocaml-config:...} macros should be available. we don't print anything because
+the values are all platform specific.
+
+  $ dune build

test/blackbox-tests/test-cases/output-obj/dune

@@ -21,19 +21,19 @@
 (rule
  (targets static.exe)
  (deps test.exe%{ext_obj} static.c)
- (action (run %{CC} -o %{targets} -I %{ocaml_where} -I . %{deps}
+ (action (run %{cc} -o %{targets} -I %{ocaml_where} -I . %{deps}
           %{ocaml-config:native_c_libraries})))
 
 (rule
  (targets static.bc)
  (deps test.bc%{ext_obj} static.c)
- (action (run %{CC} -o %{targets} -I %{ocaml_where} -I . %{deps}
+ (action (run %{cc} -o %{targets} -I %{ocaml_where} -I . %{deps}
           %{ocaml-config:bytecomp_c_libraries})))
 
 (rule
  (targets dynamic.exe)
  (deps dynamic.c)
- (action (run %{CC} -o %{targets} %{first-dep} %{ocaml-config:native_c_libraries})))
+ (action (run %{cc} -o %{targets} %{first-dep} %{ocaml-config:native_c_libraries})))
 
 (alias
  (name runtest)