NifSharedSources = ["c_src/educkdb_nif.c", "c_src/queue.c"].
NifStaticSources = NifSharedSources ++ ["c_src/duckdb/duckdb.cpp"].
CFlagsDefault = "$CFLAGS -Os".
CXXFlagsDefault = "$CXXFLAGS -Os -std=c++11".
DrvLdFlagsDefault = "-shared -lduckdb".

DrvLdFlags =
    case os:getenv("ESQLITE_CFLAGS") of
        NotDefined when NotDefined == false; NotDefined == [] ->
            DrvLdFlagsDefault;
        DrvLdFlagsOverride ->
            DrvLdFlagsOverride
    end.

{NifSources, LdEnv, CFlagsExt, CXXFlagsExt} =
    {NifStaticSources, [], " -Ic_src/duckdb", ""}.

CFlags =
    case os:getenv("EDUCKDB_CFLAGS") of
        NotDefined when NotDefined == false; NotDefined == [] ->
            CFlagsDefault ++ CFlagsExt;
        CFlagsOverride ->
            CFlagsOverride
    end.

CXXFlags =
    case os:getenv("EDUCKDB_CXXFLAGS") of
        NotDefined when NotDefined == false; NotDefined == [] ->
            CXXFlagsDefault ++ CXXFlagsExt;
        CFlagsOverride ->
            CFlagsOverride
    end.

[
    {minimum_otp_vsn, "22.0"},

    {erl_opts, [debug_info]},

    {xref_checks, [undefined_function_calls,
                   undefined_functions,
                   locals_not_used,
                   deprecated_function_calls,
                   deprecated_functions]},

    {port_env, [
        %% Default darwin ldflags causes loading of system sqlite. Removed -bundle flag.
        {"darwin", "DRV_LDFLAGS", "-flat_namespace -undefined suppress $ERL_LDFLAGS"},

        {"solaris", "CFLAGS", "$CFLAGS -std=c99"},
        {"linux", "CFLAGS", "$CFLAGS -std=c11"},

        {"CFLAGS", CFlags},
        {"CXXFLAGS", CXXFlags}

    ] ++ LdEnv},
    {port_specs, [
        {"priv/educkdb_nif.so", NifSources}
    ]},

    {plugins, [pc]},

    {provider_hooks,
        [{post,
        [{compile, {pc, compile}},
            {clean, {pc, clean}}]}]},

    {dialyzer, [
        {warnings, [
            unmatched_returns,
            error_handling,
            race_conditions,
            underspecs,
            unknown
        ]}
    ]},

    {edoc_opts, [{preprocess, true},
                 {sort_functions, false}]},

    {hex, [{doc, edoc}]}

].