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+# Copyright (c) 2024, Tyler Hughes <[email protected]>
+# Copyright (c) 2024, Loïc Hoguin <[email protected]>
+# This file is part of erlang.mk and subject to the terms of the ISC License.
+
+ifeq ($(ELIXIR),system)
+# We expect 'elixir' to be on the path.
+ELIXIR_BIN ?= $(shell readlink -f `which elixir`)
+ELIXIR_LIBS ?= $(abspath $(dir $(ELIXIR_BIN))/../lib)
+# Fallback in case 'elixir' is a shim.
+ifeq ($(wildcard $(ELIXIR_LIBS)/elixir/),)
+ELIXIR_LIBS = $(abspath $(shell elixir -e 'IO.puts(:code.lib_dir(:elixir))')/../)
+endif
+ELIXIR_LIBS := $(ELIXIR_LIBS)
+export ELIXIR_LIBS
+ERL_LIBS := $(ERL_LIBS):$(ELIXIR_LIBS)
+else
+ifeq ($(ELIXIR),dep)
+ERL_LIBS := $(ERL_LIBS):$(DEPS_DIR)/elixir/lib/
+endif
+endif
+
+elixirc_verbose_0 = @echo " EXC $(words $(EX_FILES)) files";
+elixirc_verbose_2 = set -x;
+elixirc_verbose = $(elixirc_verbose_$(V))
+
+# Unfortunately this currently requires Elixir.
+# https://github.com/jelly-beam/verl is a good choice
+# for an Erlang implementation, but we already have to
+# pull hex_core and Rebar3 so adding yet another pull
+# is annoying, especially one that would be necessary
+# every time we autopatch Rebar projects. Wait and see.
+define hex_version_resolver.erl
+ HexVersionResolve = fun(Name, Req) ->
+ application:ensure_all_started(ssl),
+ application:ensure_all_started(inets),
+ Config = $(hex_config.erl),
+ case hex_repo:get_package(Config, atom_to_binary(Name)) of
+ {ok, {200, _RespHeaders, Package}} ->
+ #{releases := List} = Package,
+ {value, #{version := Version}} = lists:search(fun(#{version := Vsn}) ->
+ M = list_to_atom("Elixir.Version"),
+ F = list_to_atom("match?"),
+ M:F(Vsn, Req)
+ end, List),
+ {ok, Version};
+ {ok, {Status, _, Errors}} ->
+ {error, Status, Errors}
+ end
+ end,
+ HexVersionResolveAndPrint = fun(Name, Req) ->
+ case HexVersionResolve(Name, Req) of
+ {ok, Version} ->
+ io:format("~s", [Version]),
+ halt(0);
+ {error, Status, Errors} ->
+ io:format("Error ~b: ~0p~n", [Status, Errors]),
+ halt(77)
+ end
+ end
+endef
+
+define dep_autopatch_mix.erl
+ $(call hex_version_resolver.erl),
+ {ok, _} = application:ensure_all_started(elixir),
+ {ok, _} = application:ensure_all_started(mix),
+ MixFile = <<"$(call core_native_path,$(DEPS_DIR)/$1/mix.exs)">>,
+ {Mod, Bin} =
+ case elixir_compiler:file(MixFile, fun(_File, _LexerPid) -> ok end) of
+ [{T = {_, _}, _CheckerPid}] -> T;
+ [T = {_, _}] -> T
+ end,
+ {module, Mod} = code:load_binary(Mod, binary_to_list(MixFile), Bin),
+ Project = Mod:project(),
+ Application = try Mod:application() catch error:undef -> [] end,
+ StartMod = case lists:keyfind(mod, 1, Application) of
+ {mod, {StartMod0, _StartArgs}} ->
+ atom_to_list(StartMod0);
+ _ ->
+ ""
+ end,
+ Write = fun (Text) ->
+ file:write_file("$(call core_native_path,$(DEPS_DIR)/$1/Makefile)", Text, [append])
+ end,
+ Write([
+ "PROJECT = ", atom_to_list(proplists:get_value(app, Project)), "\n"
+ "PROJECT_DESCRIPTION = ", proplists:get_value(description, Project, ""), "\n"
+ "PROJECT_VERSION = ", proplists:get_value(version, Project, ""), "\n"
+ "PROJECT_MOD = ", StartMod, "\n"
+ "define PROJECT_ENV\n",
+ io_lib:format("~p", [proplists:get_value(env, Application, [])]), "\n"
+ "endef\n\n"]),
+ ExtraApps = lists:usort([eex, elixir, logger, mix] ++ proplists:get_value(extra_applications, Application, [])),
+ Write(["LOCAL_DEPS += ", lists:join(" ", [atom_to_list(App) || App <- ExtraApps]), "\n\n"]),
+ Deps = proplists:get_value(deps, Project, []) -- [elixir_make],
+ IsRequiredProdDep = fun(Opts) ->
+ (proplists:get_value(optional, Opts) =/= true)
+ andalso
+ case proplists:get_value(only, Opts, prod) of
+ prod -> true;
+ L when is_list(L) -> lists:member(prod, L);
+ _ -> false
+ end
+ end,
+ lists:foreach(fun
+ ({Name, Req}) when is_binary(Req) ->
+ {ok, Vsn} = HexVersionResolve(Name, Req),
+ Write(["DEPS += ", atom_to_list(Name), "\n"]),
+ Write(["dep_", atom_to_list(Name), " = hex ", Vsn, " ", atom_to_list(Name), "\n"]);
+ ({Name, Opts}) when is_list(Opts) ->
+ Path = proplists:get_value(path, Opts),
+ case IsRequiredProdDep(Opts) of
+ true when Path =/= undefined ->
+ Write(["DEPS += ", atom_to_list(Name), "\n"]),
+ Write(["dep_", atom_to_list(Name), " = ln ", Path, "\n"]);
+ true when Path =:= undefined ->
+ Write(["DEPS += ", atom_to_list(Name), "\n"]),
+ io:format(standard_error, "Warning: No version given for ~p.", [Name]);
+ false ->
+ ok
+ end;
+ ({Name, Req, Opts}) ->
+ case IsRequiredProdDep(Opts) of
+ true ->
+ {ok, Vsn} = HexVersionResolve(Name, Req),
+ Write(["DEPS += ", atom_to_list(Name), "\n"]),
+ Write(["dep_", atom_to_list(Name), " = hex ", Vsn, " ", atom_to_list(Name), "\n"]);
+ false ->
+ ok
+ end;
+ (_) ->
+ ok
+ end, Deps),
+ case lists:member(elixir_make, proplists:get_value(compilers, Project, [])) of
+ false ->
+ ok;
+ true ->
+ Write("# https://hexdocs.pm/elixir_make/Mix.Tasks.Compile.ElixirMake.html\n"),
+ MakeVal = fun(Key, Proplist, DefaultVal, DefaultReplacement) ->
+ case proplists:get_value(Key, Proplist, DefaultVal) of
+ DefaultVal -> DefaultReplacement;
+ Value -> Value
+ end
+ end,
+ MakeMakefile = binary_to_list(MakeVal(make_makefile, Project, default, <<"Makefile">>)),
+ MakeExe = MakeVal(make_executable, Project, default, "$$\(MAKE)"),
+ MakeCwd = MakeVal(make_cwd, Project, undefined, <<".">>),
+ MakeTargets = MakeVal(make_targets, Project, [], []),
+ MakeArgs = MakeVal(make_args, Project, undefined, []),
+ case file:rename("$(DEPS_DIR)/$1/" ++ MakeMakefile, "$(DEPS_DIR)/$1/elixir_make.mk") of
+ ok -> ok;
+ Err = {error, _} ->
+ io:format(standard_error, "Failed to copy Makefile with error ~p~n", [Err]),
+ halt(90)
+ end,
+ Write(["app::\n"
+ "\t", MakeExe, " -C ", MakeCwd, " -f $(DEPS_DIR)/$1/elixir_make.mk",
+ lists:join(" ", MakeTargets),
+ lists:join(" ", MakeArgs),
+ "\n\n"]),
+ case MakeVal(make_clean, Project, nil, undefined) of
+ undefined ->
+ ok;
+ Clean ->
+ Write(["clean::\n\t", Clean, "\n\n"])
+ end
+ end,
+ Write("ERLC_OPTS = +debug_info\n\n"),
+ Write("include $$\(if $$\(ERLANG_MK_FILENAME),$$\(ERLANG_MK_FILENAME),erlang.mk)"),
+ halt()
+endef
+
+define dep_autopatch_mix
+ sed 's|\(defmodule.*do\)|\1\n try do\n Code.compiler_options(on_undefined_variable: :warn)\n rescue _ -> :ok\n end\n|g' -i $(DEPS_DIR)/$(1)/mix.exs; \
+ $(MAKE) $(DEPS_DIR)/hex_core/ebin/dep_built; \
+ MIX_ENV="$(if $(MIX_ENV),$(strip $(MIX_ENV)),prod)" \
+ $(call erlang,$(call dep_autopatch_mix.erl,$1))
+endef
+
+# We change the group leader so the Elixir io:format output
+# isn't captured as we need to either print the modules on
+# success, or print _ERROR_ on failure.
+define compile_ex.erl
+ {ok, _} = application:ensure_all_started(elixir),
+ {ok, _} = application:ensure_all_started(mix),
+ $(foreach dep,$(LOCAL_DEPS),_ = application:load($(dep)),)
+ ModCode = list_to_atom("Elixir.Code"),
+ ModCode:put_compiler_option(ignore_module_conflict, true),
+ ModComp = list_to_atom("Elixir.Kernel.ParallelCompiler"),
+ ModMixProject = list_to_atom("Elixir.Mix.Project"),
+ erlang:group_leader(whereis(standard_error), self()),
+ ModMixProject:in_project($(PROJECT), ".", [], fun(_MixFile) ->
+ case ModComp:compile_to_path([$(call comma_list,$(patsubst %,<<"%">>,$1))], <<"ebin/">>) of
+ {ok, Modules, _} ->
+ lists:foreach(fun(E) -> io:format(user, "~p ", [E]) end, Modules),
+ halt(0);
+ {error, _ErroredModules, _WarnedModules} ->
+ io:format(user, "_ERROR_", []),
+ halt(1)
+ end
+ end)
+endef
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