NifSharedSources = ["c_src/esqlite3_nif.c"].
NifStaticSources = NifSharedSources ++ ["c_src/sqlite3/sqlite3.c"].
CFlagsDefault = "$CFLAGS -Os -DSQLITE_DQS=0 -DSQLITE_THREADSAFE=1 -DSQLITE_DEFAULT_MEMSTATUS=0 -DSQLITE_DEFAULT_WAL_SYNCHRONOUS=1 -DSQLITE_LIKE_DOESNT_MATCH_BLOBS -DSQLITE_MAX_EXPR_DEPTH=0 -DSQLITE_OMIT_DEPRECATED -DSQLITE_OMIT_PROGRESS_CALLBACK -DSQLITE_USE_ALLOCA -DSQLITE_OMIT_AUTOINIT -DSQLITE_USE_URI -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_FTS4 -DSQLITE_ENABLE_FTS5 -DSQLITE_ENABLE_MATH_FUNCTIONS -DSQLITE_ENABLE_JSON1 -DSQLITE_ENABLE_RTREE -DSQLITE_ENABLE_GEOPOLY".
DrvLdFlagsDefault = "-shared -lsqlite3".

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

{NifSources, LdEnv, CFlagsExt} =
    case os:getenv("ESQLITE_USE_SYSTEM") of
        NotDefined when NotDefined == false; NotDefined == [] -> {NifStaticSources, [], " -Ic_src/sqlite3"};
        _Defined -> {NifSharedSources, [{"DRV_LDFLAGS", DrvLdFlags}], []}
    end.

CFlags =
    case os:getenv("ESQLITE_CFLAGS") of
        NotDefined when NotDefined == false; NotDefined == [] -> CFlagsDefault ++ CFlagsExt;
        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}
    ] ++ LdEnv},
    {port_specs, [
        {"priv/esqlite3_nif.so", NifSources}
    ]},

    {plugins, [{pc, "~> 1.15"}]},

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

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

    {edoc_opts, [{preprocess, true},
                 {stylesheet, "style.css"},
                 {sort_functions, false}]},

    {hex, [{doc, edoc}]}

].