termbox2_nif

NifSharedSources = ["c_src/termbox2_nif.c"].
NifStaticSources = NifSharedSources.

% Default compiler flags with optimizations and warnings
CFlagsDefault = "$CFLAGS -Wall -Wextra -Werror -O2 ".
DrvLdFlagsDefault = "-shared".

% Allow override of compiler flags through environment
DrvLdFlags =
    case os:getenv("TERMBOX2_CFLAGS") of
        NotDefined when NotDefined == false; NotDefined == [] -> DrvLdFlagsDefault;
        DrvLdFlagsOverride -> DrvLdFlagsOverride
    end.

% Handle system vs bundled termbox2
{NifSources, LdEnv, CFlagsExt} =
    case os:getenv("TERMBOX2_USE_SYSTEM") of
        NotDefined when NotDefined == false; NotDefined == [] -> 
            {NifStaticSources, [], " -Ic_src/termbox2"};
        _Defined -> 
            {NifSharedSources, [{"DRV_LDFLAGS", DrvLdFlags}], []}
    end.

% Allow override of C flags through environment
CFlags = os:getenv("CFLAGS", "-Wall -Wextra -Werror -O2 -I$(shell erl -eval 'io:format(\"~s\", [code:root_dir()])' -s init stop -noshell)/usr/include"),

[
    {minimum_otp_vsn, "24.0"},
    {project_plugins, [rebar3_ex_doc, rebar3_hex]},
    {files, ["src", "c_src", "priv", "LICENSE", "README.md"]},

    % Enable all warnings and treat them as errors
    {erl_opts, [debug_info]},
    {erl_opts, [{src, [debug_info, warnings_as_errors, warn_export_all, warn_export_vars, warn_missing_spec, warn_untyped_record]}]},
    {erl_opts, [{test, [debug_info]}]},

    % Enable all xref checks
    {xref_checks, [
        undefined_function_calls,
        undefined_functions,
        locals_not_used,
        deprecated_function_calls,
        deprecated_functions,
        warnings_as_errors
    ]},

    % Platform-specific settings
    {port_env, [
        % macOS specific settings
        {"darwin", "DRV_LDFLAGS",
            "-flat_namespace -undefined dynamic_lookup -dynamiclib $ERL_LDFLAGS"},

        % Solaris specific settings
        {"solaris", "CFLAGS",
            "$CFLAGS -std=c99"},

        % Linux specific settings
        {"linux", "CFLAGS",
            "$CFLAGS -std=c11"},

        % Common settings
        {"CFLAGS", CFlags}
    ] ++ LdEnv},

    % Port specifications
    {port_specs, [
        {"priv/termbox2_nif.so", NifSources}
    ]},

    % Pre-build hooks
    {pre_hooks,
        [{"(linux|darwin|solaris)", compile, 
            "sh -c 'if [ ! -f c_src/termbox2/termbox2.h ]; then git clone --depth 1 https://github.com/termbox/termbox2.git c_src/termbox2; fi'"},
         {"(linux|darwin|solaris)", compile, "make -C c_src"},
         {"(freebsd)", compile, "gmake -C c_src"}]},

    % Post-build hooks
    {post_hooks,
        [{"(linux|darwin|solaris)", clean, "make -C c_src clean"},
         {"(freebsd)", clean, "gmake -C c_src clean"}]},

    % Plugins
    {plugins, [pc]},

    % Provider hooks
    {provider_hooks,
        [{post,
            [{compile, {pc, compile}},
             {clean, {pc, clean}}]}]},

    % Dialyzer configuration
    {dialyzer, [
        {warnings, [
            unmatched_returns,
            error_handling,
            race_conditions,
            underspecs,
            unknown,
            no_return
        ]},
        {plt_apps, top_level_deps},
        {plt_extra_apps, []},
        {plt_location, local},
        {base_plt_apps, [stdlib, kernel, crypto]},
        {base_plt_location, global}
    ]},

    % Documentation settings
    {edoc_opts, [
        {preprocess, true},
        {stylesheet, "style.css"},
        {sort_functions, false},
        {private, true},
        {todo, true}
    ]},

    % Hex package settings
    {hex, [
        {doc, edoc},
        {files, ["src", "c_src", "priv", "LICENSE", "README.md"]}
    ]},

    % ExDoc settings
    {ex_doc, [
        {extras, ["README.md", "LICENSE"]},
        {main, "README.md"},
        {source_url, "https://github.com/wmealing/termbox2-nif"},
        {source_ref, "master"},
        {formatter, "html"}
    ]}
].