fix to include beams built from src files in subdirs in modules list

rebar.config

@@ -33,7 +33,7 @@
 {erl_opts, [{platform_define, "^[0-9]+", namespaced_types},
             {platform_define, "^(19|2)", rand_only},
             {platform_define, "^2", unicode_str},
-            {platform_define, "^2", filelib_find_source},
+            {platform_define, "^(2[1-9])|(20\\\\.3)", filelib_find_source},
             {platform_define, "^(R|1|20)", fun_stacktrace},
             warnings_as_errors
            ]}.

src/rebar_otp_app.erl

@@ -166,7 +166,7 @@ ebin_modules(AppInfo, Dir) ->
     Beams = lists:sort(rebar_utils:beams(filename:join(Dir, "ebin"))),
     SrcDirs = rebar_dir:src_dirs(rebar_app_info:opts(AppInfo), ["src"]),
     FindSourceRules = [{".beam", ".erl",
-                        [{"ebin", SrcDir} || SrcDir <- SrcDirs]}],
+                        [{"ebin", filename:join(SrcDir, "**")} || SrcDir <- SrcDirs]}],
     Filtered = lists:filter(fun(Beam) ->
                                 rebar_utils:find_source(filename:basename(Beam),
                                                         filename:dirname(Beam),

test/rebar_compile_SUITE.erl

@@ -2157,7 +2157,13 @@ recursive(Config) ->
 
     EbinDir = filename:join([AppDir, "_build", "default", "lib", Name, "ebin"]),
     {ok, Files} = rebar_utils:list_dir(EbinDir),
-    ?assert(lists:member("rec.beam",Files)).
+    ?assert(lists:member("rec.beam",Files)),
+
+    %% check that rec is in modules list of .app file
+    AppFile = filename:join(EbinDir, Name++".app"),
+    {ok, [{application, _, List}]} = file:consult(AppFile),
+    {modules, Modules} = lists:keyfind(modules, 1, List),
+    ?assert(lists:member(rec, Modules)).
 
 no_recursive(Config) ->
     AppDir = ?config(apps, Config),