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Check C source dependencies in needs_compile

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This commit is contained in:
Tomas Janousek 2014-06-10 20:00:01 +02:00
parent 29a16cbabe
commit 3a549d3e37
1 changed files with 29 additions and 6 deletions
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35
src/rebar_port_compiler.erl
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@ -141,7 +141,8 @@ clean(Config, AppFile) ->
Specs ->
lists:foreach(fun(#spec{target=Target, objects=Objects}) ->
rebar_file_utils:delete_each([Target]),
rebar_file_utils:delete_each(Objects)
rebar_file_utils:delete_each(Objects),
rebar_file_utils:delete_each(port_deps(Objects))
end, Specs)
end,
ok.
@ -251,9 +252,28 @@ exec_compiler(Config, Source, Cmd, ShOpts) ->
end.
needs_compile(Source, Bin) ->
%% TODO: Generate depends using gcc -MM so we can also
%% check for include changes
filelib:last_modified(Bin) < filelib:last_modified(Source).
needs_link(Bin, [Source|bin_deps(Bin)]).
%% NOTE: This relies on -MMD being passed to the compiler and returns an
%% empty list if the .d file is not available. This means header deps are
%% ignored on win32.
bin_deps(Bin) ->
[DepFile] = port_deps([Bin]),
case file:read_file(DepFile) of
{ok, Deps} ->
Ds = parse_bin_deps(list_to_binary(Bin), Deps),
?DEBUG("Deps of ~p: ~p\n", [Bin, Ds]),
Ds;
{error, Err} ->
?DEBUG("Skipping deps parse of ~s: ~p\n", [DepFile, Err]),
[]
end.
parse_bin_deps(Bin, Deps) ->
Sz = size(Bin),
<<Bin:Sz/binary, ": ", X/binary>> = Deps,
Ds = re:split(X, "\\s*\\\\\\R\\s*|\\s+", [{return, binary}]),
[D || D <- Ds, D =/= <<>>].
needs_link(SoName, []) ->
filelib:last_modified(SoName) == 0;
@ -334,6 +354,9 @@ port_sources(Sources) ->
port_objects(SourceFiles) ->
[replace_extension(O, ".o") || O <- SourceFiles].
port_deps(SourceFiles) ->
[replace_extension(O, ".d") || O <- SourceFiles].
port_opts(Config, Opts) ->
[port_opt(Config, O) || O <- Opts].
@ -560,9 +583,9 @@ default_env() ->
"$CC -c $CFLAGS $EXE_CFLAGS $PORT_IN_FILES -o $PORT_OUT_FILE"},
{"EXE_LINK_TEMPLATE",
"$CC $PORT_IN_FILES $LDFLAGS $EXE_LDFLAGS -o $PORT_OUT_FILE"},
{"DRV_CFLAGS" , "-g -Wall -fPIC $ERL_CFLAGS"},
{"DRV_CFLAGS" , "-g -Wall -fPIC -MMD $ERL_CFLAGS"},
{"DRV_LDFLAGS", "-shared $ERL_LDFLAGS"},
{"EXE_CFLAGS" , "-g -Wall -fPIC $ERL_CFLAGS"},
{"EXE_CFLAGS" , "-g -Wall -fPIC -MMD $ERL_CFLAGS"},
{"EXE_LDFLAGS", "$ERL_LDFLAGS"},
{"ERL_CFLAGS", lists:concat([" -I", erl_interface_dir(include),