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-<div class="navheader"><table width="100%" summary="Navigation header"><tr><td width="20%" align="left"> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="installation.html">Next</a></td></tr></table><hr /></div><div xml:lang="en" class="book" lang="en"><div class="titlepage"><div><div><h1 class="title"><a id="idm45978272953936"></a>Erlang.mk User Guide</h1></div><div><div class="author"><h3 class="author"><span class="firstname">Loïc</span> <span class="surname">Hoguin</span></h3><code class="email">&lt;<a class="email" href="mailto:[email protected]">[email protected]</a>&gt;</code></div></div></div><hr /></div><div class="toc"><p><strong>Table of Contents</strong></p><dl class="toc"><dt><span class="chapter"><a href="installation.html">1. Installation</a></span></dt><dd><dl><dt><span class="section"><a href="installation.html#_on_unix">1.1. On Unix</a></span></dt><dt><span class="section"><a href="installation.html#_on_windows">1.2. On Windows</a></span></dt></dl></dd><dt><span class="chapter"><a href="getting_started.html">2. Getting started</a></span></dt><dd><dl><dt><span class="section"><a href="getting_started.html#_creating_a_folder_for_your_project">2.1. Creating a folder for your project</a></span></dt><dt><span class="section"><a href="getting_started.html#_downloading_erlang_mk">2.2. Downloading Erlang.mk</a></span></dt><dt><span class="section"><a href="getting_started.html#_getting_started_with_otp_applications">2.3. Getting started with OTP applications</a></span></dt><dt><span class="section"><a href="getting_started.html#_getting_started_with_otp_libraries">2.4. Getting started with OTP libraries</a></span></dt><dt><span class="section"><a href="getting_started.html#_getting_started_with_otp_releases">2.5. Getting started with OTP releases</a></span></dt><dt><span class="section"><a href="getting_started.html#_getting_started_from_scratch">2.6. Getting started from scratch</a></span></dt><dt><span class="section"><a href="getting_started.html#_using_spaces_instead_of_tabs">2.7. Using spaces instead of tabs</a></span></dt><dt><span class="section"><a href="getting_started.html#_using_templates">2.8. Using templates</a></span></dt><dt><span class="section"><a href="getting_started.html#_hiding_erlang_mk_from_git">2.9. Hiding Erlang.mk from git</a></span></dt><dt><span class="section"><a href="getting_started.html#_getting_help">2.10. Getting help</a></span></dt></dl></dd><dt><span class="chapter"><a href="overview.html">3. Overview</a></span></dt><dd><dl><dt><span class="section"><a href="overview.html#_building_your_project">3.1. Building your project</a></span></dt><dt><span class="section"><a href="overview.html#_exploring_the_package_index">3.2. Exploring the package index</a></span></dt><dt><span class="section"><a href="overview.html#_generating_documentation">3.3. Generating documentation</a></span></dt><dt><span class="section"><a href="overview.html#_running_tests">3.4. Running tests</a></span></dt><dt><span class="section"><a href="overview.html#_need_more">3.5. Need more?</a></span></dt></dl></dd><dt><span class="chapter"><a href="updating.html">4. Updating Erlang.mk</a></span></dt><dd><dl><dt><span class="section"><a href="updating.html#_initial_bootstrap">4.1. Initial bootstrap</a></span></dt><dt><span class="section"><a href="updating.html#_updating">4.2. Updating</a></span></dt><dt><span class="section"><a href="updating.html#_customizing_the_build">4.3. Customizing the build</a></span></dt></dl></dd><dt><span class="chapter"><a href="limitations.html">5. Limitations</a></span></dt><dd><dl><dt><span class="section"><a href="limitations.html#_erlang_must_be_available">5.1. Erlang must be available</a></span></dt><dt><span class="section"><a href="limitations.html#_spaces_in_path">5.2. Spaces in path</a></span></dt><dt><span class="section"><a href="limitations.html#_dependency_tracking_and_modification_times">5.3. Dependency tracking and modification times</a></span></dt></dl></dd><dt><span class="part"><a href="code.html">I. Code</a></span></dt><dd><dl><dt><span class="chapter"><a href="building.html">6. Building</a></span></dt><dd><dl><dt><span class="section"><a href="building.html#_how_to_build">6.1. How to build</a></span></dt><dt><span class="section"><a href="building.html#_what_to_build">6.2. What to build</a></span></dt><dt><span class="section"><a href="building.html#_application_resource_file">6.3. Application resource file</a></span></dt><dt><span class="section"><a href="building.html#_automatic_application_resource_file_values">6.4. Automatic application resource file values</a></span></dt><dt><span class="section"><a href="building.html#_file_formats">6.5. File formats</a></span></dt><dt><span class="section"><a href="building.html#_compilation_options">6.6. Compilation options</a></span></dt><dt><span class="section"><a href="building.html#_cold_and_hot_builds">6.7. Cold and hot builds</a></span></dt><dt><span class="section"><a href="building.html#_dependency_tracking">6.8. Dependency tracking</a></span></dt><dt><span class="section"><a href="building.html#_generating_erlang_source">6.9. Generating Erlang source</a></span></dt><dt><span class="section"><a href="building.html#_cleaning">6.10. Cleaning</a></span></dt></dl></dd><dt><span class="chapter"><a href="deps.html">7. Packages and dependencies</a></span></dt><dd><dl><dt><span class="section"><a href="deps.html#_searching_packages">7.1. Searching packages</a></span></dt><dt><span class="section"><a href="deps.html#_adding_dependencies_to_your_project">7.2. Adding dependencies to your project</a></span></dt><dt><span class="section"><a href="deps.html#_how_deps_are_fetched_and_built">7.3. How deps are fetched and built</a></span></dt><dt><span class="section"><a href="deps.html#_fetching_and_listing_dependencies_only">7.4. Fetching and listing dependencies only</a></span></dt><dt><span class="section"><a href="deps.html#_ignoring_unwanted_dependencies">7.5. Ignoring unwanted dependencies</a></span></dt><dt><span class="section"><a href="deps.html#_dependencies_directory">7.6. Dependencies directory</a></span></dt><dt><span class="section"><a href="deps.html#_many_applications_in_one_repository">7.7. Many applications in one repository</a></span></dt><dt><span class="section"><a href="deps.html#_repositories_with_no_application_at_the_root_level">7.8. Repositories with no application at the root level</a></span></dt><dt><span class="section"><a href="deps.html#_autopatch">7.9. Autopatch</a></span></dt><dt><span class="section"><a href="deps.html#_skipping_deps">7.10. Skipping deps</a></span></dt></dl></dd><dt><span class="chapter"><a href="ports.html">8. NIFs and port drivers</a></span></dt><dd><dl><dt><span class="section"><a href="ports.html#_c_source_code_location_and_erlang_environment">8.1. C source code location and Erlang environment</a></span></dt><dt><span class="section"><a href="ports.html#_using_a_custom_makefile">8.2. Using a custom Makefile</a></span></dt><dt><span class="section"><a href="ports.html#_using_erlang_mk_directly">8.3. Using Erlang.mk directly</a></span></dt><dt><span class="section"><a href="ports.html#_propagating_compile_and_linker_flags_to_sub_makefiles">8.4. Propagating compile and linker flags to sub-Makefiles</a></span></dt></dl></dd><dt><span class="chapter"><a href="relx.html">9. Releases</a></span></dt><dd><dl><dt><span class="section"><a href="relx.html#_setup">9.1. Setup</a></span></dt><dt><span class="section"><a href="relx.html#_configuration">9.2. Configuration</a></span></dt><dt><span class="section"><a href="relx.html#_generating_the_release">9.3. Generating the release</a></span></dt><dt><span class="section"><a href="relx.html#_running_the_release">9.4. Running the release</a></span></dt><dt><span class="section"><a href="relx.html#_upgrading_a_release">9.5. Upgrading a release</a></span></dt><dt><span class="section"><a href="relx.html#_getting_relx_semver_value">9.6. Getting Relx semver value</a></span></dt></dl></dd><dt><span class="chapter"><a href="sfx.html">10. Self-extracting releases</a></span></dt><dd><dl><dt><span class="section"><a href="sfx.html#_generating_the_self_extracting_archive">10.1. Generating the self-extracting archive</a></span></dt><dt><span class="section"><a href="sfx.html#_running_the_release_2">10.2. Running the release</a></span></dt></dl></dd><dt><span class="chapter"><a href="escript.html">11. Escripts</a></span></dt><dd><dl><dt><span class="section"><a href="escript.html#_requirements">11.1. Requirements</a></span></dt><dt><span class="section"><a href="escript.html#_generating_an_escript">11.2. Generating an escript</a></span></dt><dt><span class="section"><a href="escript.html#_configuration_2">11.3. Configuration</a></span></dt><dt><span class="section"><a href="escript.html#_extra_files">11.4. Extra files</a></span></dt><dt><span class="section"><a href="escript.html#_optimizing_for_size">11.5. Optimizing for size</a></span></dt></dl></dd><dt><span class="chapter"><a href="kerl.html">12. OTP version management</a></span></dt><dd><dl><dt><span class="section"><a href="kerl.html#_erlang_versions">12.1. Erlang versions</a></span></dt><dt><span class="section"><a href="kerl.html#otp_version_pinning">12.2. OTP version pinning</a></span></dt><dt><span class="section"><a href="kerl.html#_continuous_integration">12.3. Continuous integration</a></span></dt><dt><span class="section"><a href="kerl.html#_configuring_kerl">12.4. Configuring Kerl</a></span></dt></dl></dd><dt><span class="chapter"><a href="compat.html">13. Compatibility with other build tools</a></span></dt><dd><dl><dt><span class="section"><a href="compat.html#_rebar_projects_as_erlang_mk_dependencies">13.1. Rebar projects as Erlang.mk dependencies</a></span></dt><dt><span class="section"><a href="compat.html#_erlang_mk_projects_as_rebar_dependencies">13.2. Erlang.mk projects as Rebar dependencies</a></span></dt></dl></dd></dl></dd><dt><span class="part"><a href="docs.html">II. Documentation</a></span></dt><dd><dl><dt><span class="chapter"><a href="asciidoc.html">14. AsciiDoc documentation</a></span></dt><dd><dl><dt><span class="section"><a href="asciidoc.html#_requirements_2">14.1. Requirements</a></span></dt><dt><span class="section"><a href="asciidoc.html#_writing_asciidoc_documentation">14.2. Writing AsciiDoc documentation</a></span></dt><dt><span class="section"><a href="asciidoc.html#_configuration_3">14.3. Configuration</a></span></dt><dt><span class="section"><a href="asciidoc.html#_usage">14.4. Usage</a></span></dt></dl></dd><dt><span class="chapter"><a href="edoc.html">15. EDoc comments</a></span></dt><dd><dl><dt><span class="section"><a href="edoc.html#_writing_edoc_comments">15.1. Writing EDoc comments</a></span></dt><dt><span class="section"><a href="edoc.html#_configuration_4">15.2. Configuration</a></span></dt><dt><span class="section"><a href="edoc.html#_usage_2">15.3. Usage</a></span></dt></dl></dd><dt><span class="chapter"><a href="sphinx.html">16. Sphinx documentation</a></span></dt><dd><dl><dt><span class="section"><a href="sphinx.html#_writing_sphinx_documentation">16.1. Writing Sphinx documentation</a></span></dt><dt><span class="section"><a href="sphinx.html#_basic_setup">16.2. Basic setup</a></span></dt><dt><span class="section"><a href="sphinx.html#_erlang_mk_configuration">16.3. Erlang.mk configuration</a></span></dt><dt><span class="section"><a href="sphinx.html#_generating_man_pages">16.4. Generating man pages</a></span></dt></dl></dd></dl></dd><dt><span class="part"><a href="tests.html">III. Tests</a></span></dt><dd><dl><dt><span class="chapter"><a href="shell.html">17. Erlang shell</a></span></dt><dd><dl><dt><span class="section"><a href="shell.html#_configuration_5">17.1. Configuration</a></span></dt><dt><span class="section"><a href="shell.html#_usage_3">17.2. Usage</a></span></dt></dl></dd><dt><span class="chapter"><a href="eunit.html">18. EUnit</a></span></dt><dd><dl><dt><span class="section"><a href="eunit.html#_writing_tests">18.1. Writing tests</a></span></dt><dt><span class="section"><a href="eunit.html#_configuration_6">18.2. Configuration</a></span></dt><dt><span class="section"><a href="eunit.html#_usage_4">18.3. Usage</a></span></dt></dl></dd><dt><span class="chapter"><a href="ct.html">19. Common Test</a></span></dt><dd><dl><dt><span class="section"><a href="ct.html#_writing_tests_2">19.1. Writing tests</a></span></dt><dt><span class="section"><a href="ct.html#_configuration_7">19.2. Configuration</a></span></dt><dt><span class="section"><a href="ct.html#_usage_5">19.3. Usage</a></span></dt></dl></dd><dt><span class="chapter"><a href="triq.html">20. Triq</a></span></dt><dt><span class="chapter"><a href="coverage.html">21. Code coverage</a></span></dt><dt><span class="chapter"><a href="ci.html">22. Continuous integration</a></span></dt><dd><dl><dt><span class="section"><a href="ci.html#_configuring_erlang_otp_versions_to_test">22.1. Configuring Erlang/OTP versions to test</a></span></dt><dt><span class="section"><a href="ci.html#_running_tests_across_all_configured_versions">22.2. Running tests across all configured versions</a></span></dt><dt><span class="section"><a href="ci.html#_extending_the_ci_targets">22.3. Extending the CI targets</a></span></dt></dl></dd><dt><span class="chapter"><a href="dialyzer.html">23. Dialyzer</a></span></dt><dd><dl><dt><span class="section"><a href="dialyzer.html#_how_it_works">23.1. How it works</a></span></dt><dt><span class="section"><a href="dialyzer.html#_configuration_8">23.2. Configuration</a></span></dt><dt><span class="section"><a href="dialyzer.html#_usage_6">23.3. Usage</a></span></dt></dl></dd><dt><span class="chapter"><a href="xref.html">24. Xref</a></span></dt></dl></dd><dt><span class="part"><a href="plugins.html">IV. Third-party plugins</a></span></dt><dd><dl><dt><span class="chapter"><a href="plugins_usage.html">25. External plugins</a></span></dt><dd><dl><dt><span class="section"><a href="plugins_usage.html#_loading_all_plugins_from_a_dependency">25.1. Loading all plugins from a dependency</a></span></dt><dt><span class="section"><a href="plugins_usage.html#_loading_one_plugin_from_a_dependency">25.2. Loading one plugin from a dependency</a></span></dt><dt><span class="section"><a href="plugins_usage.html#_writing_external_plugins">25.3. Writing external plugins</a></span></dt><dt><span class="section"><a href="plugins_usage.html#_early_stage_plugins">25.4. Early-stage plugins</a></span></dt><dt><span class="section"><a href="plugins_usage.html#_loading_plugins_local_to_the_application">25.5. Loading  plugins local to the application</a></span></dt></dl></dd><dt><span class="chapter"><a href="plugins_list.html">26. List of plugins</a></span></dt><dd><dl><dt><span class="section"><a href="plugins_list.html#_efene_mk">26.1. efene.mk</a></span></dt><dt><span class="section"><a href="plugins_list.html#_elixir_mk">26.2. elixir.mk</a></span></dt><dt><span class="section"><a href="plugins_list.html#_elvis_mk">26.3. elvis.mk</a></span></dt><dt><span class="section"><a href="plugins_list.html#_geas">26.4. geas</a></span></dt><dt><span class="section"><a href="plugins_list.html#_hexer_mk">26.5. hexer.mk</a></span></dt><dt><span class="section"><a href="plugins_list.html#_hexpm_mk">26.6. hexpm.mk</a></span></dt><dt><span class="section"><a href="plugins_list.html#_jorel">26.7. jorel</a></span></dt><dt><span class="section"><a href="plugins_list.html#_lfe_mk">26.8. lfe.mk</a></span></dt><dt><span class="section"><a href="plugins_list.html#_mix_mk">26.9. mix.mk</a></span></dt><dt><span class="section"><a href="plugins_list.html#_reload_mk">26.10. reload.mk</a></span></dt><dt><span class="section"><a href="plugins_list.html#_rust_mk">26.11. rust.mk</a></span></dt></dl></dd></dl></dd><dt><span class="part"><a href="about.html">V. About Erlang.mk</a></span></dt><dd><dl><dt><span class="chapter"><a href="why.html">27. Why Erlang.mk</a></span></dt><dd><dl><dt><span class="section"><a href="why.html#_erlang_mk_is_fast">27.1. Erlang.mk is fast</a></span></dt><dt><span class="section"><a href="why.html#_erlang_mk_gives_you_the_full_power_of_unix">27.2. Erlang.mk gives you the full power of Unix</a></span></dt><dt><span class="section"><a href="why.html#_erlang_mk_is_a_text_file">27.3. Erlang.mk is a text file</a></span></dt><dt><span class="section"><a href="why.html#_erlang_mk_can_manage_erlang_itself">27.4. Erlang.mk can manage Erlang itself</a></span></dt><dt><span class="section"><a href="why.html#_erlang_mk_can_do_more_than_erlang">27.5. Erlang.mk can do more than Erlang</a></span></dt><dt><span class="section"><a href="why.html#_erlang_mk_integrates_nicely_in_make_and_automake_projects">27.6. Erlang.mk integrates nicely in Make and Automake projects</a></span></dt></dl></dd><dt><span class="chapter"><a href="history.html">28. Short history</a></span></dt><dd><dl><dt><span class="section"><a href="history.html#_before_erlang_mk">28.1. Before Erlang.mk</a></span></dt><dt><span class="section"><a href="history.html#_lifetime_of_the_project">28.2. Lifetime of the project</a></span></dt></dl></dd><dt><span class="chapter"><a href="contributing.html">29. Contributing</a></span></dt><dd><dl><dt><span class="section"><a href="contributing.html#_priorities">29.1. Priorities</a></span></dt><dt><span class="section"><a href="contributing.html#_bugs">29.2. Bugs</a></span></dt><dt><span class="section"><a href="contributing.html#_code">29.3. Code</a></span></dt><dt><span class="section"><a href="contributing.html#_packages">29.4. Packages</a></span></dt><dt><span class="section"><a href="contributing.html#_documentation">29.5. Documentation</a></span></dt><dt><span class="section"><a href="contributing.html#_feature_requests">29.6. Feature requests</a></span></dt></dl></dd></dl></dd></dl></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="installation.html">Next</a></td></tr></table></div>
+<div class="navheader"><table width="100%" summary="Navigation header"><tr><td width="20%" align="left"> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="installation.html">Next</a></td></tr></table><hr /></div><div xml:lang="en" class="book" lang="en"><div class="titlepage"><div><div><h1 class="title"><a id="idm46132705570336"></a>Erlang.mk User Guide</h1></div><div><div class="author"><h3 class="author"><span class="firstname">Loïc</span> <span class="surname">Hoguin</span></h3><code class="email">&lt;<a class="email" href="mailto:[email protected]">[email protected]</a>&gt;</code></div></div></div><hr /></div><div class="toc"><p><strong>Table of Contents</strong></p><dl class="toc"><dt><span class="chapter"><a href="installation.html">1. Installation</a></span></dt><dd><dl><dt><span class="section"><a href="installation.html#_on_unix">1.1. On Unix</a></span></dt><dt><span class="section"><a href="installation.html#_on_windows">1.2. On Windows</a></span></dt></dl></dd><dt><span class="chapter"><a href="getting_started.html">2. Getting started</a></span></dt><dd><dl><dt><span class="section"><a href="getting_started.html#_creating_a_folder_for_your_project">2.1. Creating a folder for your project</a></span></dt><dt><span class="section"><a href="getting_started.html#_downloading_erlang_mk">2.2. Downloading Erlang.mk</a></span></dt><dt><span class="section"><a href="getting_started.html#_getting_started_with_otp_applications">2.3. Getting started with OTP applications</a></span></dt><dt><span class="section"><a href="getting_started.html#_getting_started_with_otp_libraries">2.4. Getting started with OTP libraries</a></span></dt><dt><span class="section"><a href="getting_started.html#_getting_started_with_otp_releases">2.5. Getting started with OTP releases</a></span></dt><dt><span class="section"><a href="getting_started.html#_getting_started_from_scratch">2.6. Getting started from scratch</a></span></dt><dt><span class="section"><a href="getting_started.html#_using_spaces_instead_of_tabs">2.7. Using spaces instead of tabs</a></span></dt><dt><span class="section"><a href="getting_started.html#_using_templates">2.8. Using templates</a></span></dt><dt><span class="section"><a href="getting_started.html#_hiding_erlang_mk_from_git">2.9. Hiding Erlang.mk from git</a></span></dt><dt><span class="section"><a href="getting_started.html#_getting_help">2.10. Getting help</a></span></dt></dl></dd><dt><span class="chapter"><a href="overview.html">3. Overview</a></span></dt><dd><dl><dt><span class="section"><a href="overview.html#_building_your_project">3.1. Building your project</a></span></dt><dt><span class="section"><a href="overview.html#_exploring_the_package_index">3.2. Exploring the package index</a></span></dt><dt><span class="section"><a href="overview.html#_generating_documentation">3.3. Generating documentation</a></span></dt><dt><span class="section"><a href="overview.html#_running_tests">3.4. Running tests</a></span></dt><dt><span class="section"><a href="overview.html#_need_more">3.5. Need more?</a></span></dt></dl></dd><dt><span class="chapter"><a href="updating.html">4. Updating Erlang.mk</a></span></dt><dd><dl><dt><span class="section"><a href="updating.html#_initial_bootstrap">4.1. Initial bootstrap</a></span></dt><dt><span class="section"><a href="updating.html#_updating">4.2. Updating</a></span></dt><dt><span class="section"><a href="updating.html#_customizing_the_build">4.3. Customizing the build</a></span></dt></dl></dd><dt><span class="chapter"><a href="limitations.html">5. Limitations</a></span></dt><dd><dl><dt><span class="section"><a href="limitations.html#_erlang_must_be_available">5.1. Erlang must be available</a></span></dt><dt><span class="section"><a href="limitations.html#_spaces_in_path">5.2. Spaces in path</a></span></dt><dt><span class="section"><a href="limitations.html#_dependency_tracking_and_modification_times">5.3. Dependency tracking and modification times</a></span></dt></dl></dd><dt><span class="part"><a href="code.html">I. Code</a></span></dt><dd><dl><dt><span class="chapter"><a href="building.html">6. Building</a></span></dt><dd><dl><dt><span class="section"><a href="building.html#_how_to_build">6.1. How to build</a></span></dt><dt><span class="section"><a href="building.html#_what_to_build">6.2. What to build</a></span></dt><dt><span class="section"><a href="building.html#_application_resource_file">6.3. Application resource file</a></span></dt><dt><span class="section"><a href="building.html#_automatic_application_resource_file_values">6.4. Automatic application resource file values</a></span></dt><dt><span class="section"><a href="building.html#_file_formats">6.5. File formats</a></span></dt><dt><span class="section"><a href="building.html#_compilation_options">6.6. Compilation options</a></span></dt><dt><span class="section"><a href="building.html#_cold_and_hot_builds">6.7. Cold and hot builds</a></span></dt><dt><span class="section"><a href="building.html#_dependency_tracking">6.8. Dependency tracking</a></span></dt><dt><span class="section"><a href="building.html#_generating_erlang_source">6.9. Generating Erlang source</a></span></dt><dt><span class="section"><a href="building.html#_cleaning">6.10. Cleaning</a></span></dt></dl></dd><dt><span class="chapter"><a href="deps.html">7. Packages and dependencies</a></span></dt><dd><dl><dt><span class="section"><a href="deps.html#_searching_packages">7.1. Searching packages</a></span></dt><dt><span class="section"><a href="deps.html#_adding_dependencies_to_your_project">7.2. Adding dependencies to your project</a></span></dt><dt><span class="section"><a href="deps.html#_how_deps_are_fetched_and_built">7.3. How deps are fetched and built</a></span></dt><dt><span class="section"><a href="deps.html#_fetching_and_listing_dependencies_only">7.4. Fetching and listing dependencies only</a></span></dt><dt><span class="section"><a href="deps.html#_ignoring_unwanted_dependencies">7.5. Ignoring unwanted dependencies</a></span></dt><dt><span class="section"><a href="deps.html#_dependencies_directory">7.6. Dependencies directory</a></span></dt><dt><span class="section"><a href="deps.html#_many_applications_in_one_repository">7.7. Many applications in one repository</a></span></dt><dt><span class="section"><a href="deps.html#_repositories_with_no_application_at_the_root_level">7.8. Repositories with no application at the root level</a></span></dt><dt><span class="section"><a href="deps.html#_autopatch">7.9. Autopatch</a></span></dt><dt><span class="section"><a href="deps.html#_skipping_deps">7.10. Skipping deps</a></span></dt></dl></dd><dt><span class="chapter"><a href="ports.html">8. NIFs and port drivers</a></span></dt><dd><dl><dt><span class="section"><a href="ports.html#_c_source_code_location_and_erlang_environment">8.1. C source code location and Erlang environment</a></span></dt><dt><span class="section"><a href="ports.html#_using_a_custom_makefile">8.2. Using a custom Makefile</a></span></dt><dt><span class="section"><a href="ports.html#_using_erlang_mk_directly">8.3. Using Erlang.mk directly</a></span></dt><dt><span class="section"><a href="ports.html#_propagating_compile_and_linker_flags_to_sub_makefiles">8.4. Propagating compile and linker flags to sub-Makefiles</a></span></dt></dl></dd><dt><span class="chapter"><a href="relx.html">9. Releases</a></span></dt><dd><dl><dt><span class="section"><a href="relx.html#_setup">9.1. Setup</a></span></dt><dt><span class="section"><a href="relx.html#_configuration">9.2. Configuration</a></span></dt><dt><span class="section"><a href="relx.html#_generating_the_release">9.3. Generating the release</a></span></dt><dt><span class="section"><a href="relx.html#_running_the_release">9.4. Running the release</a></span></dt><dt><span class="section"><a href="relx.html#_upgrading_a_release">9.5. Upgrading a release</a></span></dt><dt><span class="section"><a href="relx.html#_getting_relx_semver_value">9.6. Getting Relx semver value</a></span></dt></dl></dd><dt><span class="chapter"><a href="sfx.html">10. Self-extracting releases</a></span></dt><dd><dl><dt><span class="section"><a href="sfx.html#_generating_the_self_extracting_archive">10.1. Generating the self-extracting archive</a></span></dt><dt><span class="section"><a href="sfx.html#_running_the_release_2">10.2. Running the release</a></span></dt></dl></dd><dt><span class="chapter"><a href="escript.html">11. Escripts</a></span></dt><dd><dl><dt><span class="section"><a href="escript.html#_requirements">11.1. Requirements</a></span></dt><dt><span class="section"><a href="escript.html#_generating_an_escript">11.2. Generating an escript</a></span></dt><dt><span class="section"><a href="escript.html#_configuration_2">11.3. Configuration</a></span></dt><dt><span class="section"><a href="escript.html#_extra_files">11.4. Extra files</a></span></dt><dt><span class="section"><a href="escript.html#_optimizing_for_size">11.5. Optimizing for size</a></span></dt></dl></dd><dt><span class="chapter"><a href="kerl.html">12. OTP version management</a></span></dt><dd><dl><dt><span class="section"><a href="kerl.html#_erlang_versions">12.1. Erlang versions</a></span></dt><dt><span class="section"><a href="kerl.html#otp_version_pinning">12.2. OTP version pinning</a></span></dt><dt><span class="section"><a href="kerl.html#_continuous_integration">12.3. Continuous integration</a></span></dt><dt><span class="section"><a href="kerl.html#_configuring_kerl">12.4. Configuring Kerl</a></span></dt></dl></dd><dt><span class="chapter"><a href="compat.html">13. Compatibility with other build tools</a></span></dt><dd><dl><dt><span class="section"><a href="compat.html#_rebar_projects_as_erlang_mk_dependencies">13.1. Rebar projects as Erlang.mk dependencies</a></span></dt><dt><span class="section"><a href="compat.html#_erlang_mk_projects_as_rebar_dependencies">13.2. Erlang.mk projects as Rebar dependencies</a></span></dt></dl></dd></dl></dd><dt><span class="part"><a href="docs.html">II. Documentation</a></span></dt><dd><dl><dt><span class="chapter"><a href="asciidoc.html">14. AsciiDoc documentation</a></span></dt><dd><dl><dt><span class="section"><a href="asciidoc.html#_requirements_2">14.1. Requirements</a></span></dt><dt><span class="section"><a href="asciidoc.html#_writing_asciidoc_documentation">14.2. Writing AsciiDoc documentation</a></span></dt><dt><span class="section"><a href="asciidoc.html#_configuration_3">14.3. Configuration</a></span></dt><dt><span class="section"><a href="asciidoc.html#_usage">14.4. Usage</a></span></dt></dl></dd><dt><span class="chapter"><a href="edoc.html">15. EDoc comments</a></span></dt><dd><dl><dt><span class="section"><a href="edoc.html#_writing_edoc_comments">15.1. Writing EDoc comments</a></span></dt><dt><span class="section"><a href="edoc.html#_configuration_4">15.2. Configuration</a></span></dt><dt><span class="section"><a href="edoc.html#_usage_2">15.3. Usage</a></span></dt></dl></dd><dt><span class="chapter"><a href="sphinx.html">16. Sphinx documentation</a></span></dt><dd><dl><dt><span class="section"><a href="sphinx.html#_writing_sphinx_documentation">16.1. Writing Sphinx documentation</a></span></dt><dt><span class="section"><a href="sphinx.html#_basic_setup">16.2. Basic setup</a></span></dt><dt><span class="section"><a href="sphinx.html#_erlang_mk_configuration">16.3. Erlang.mk configuration</a></span></dt><dt><span class="section"><a href="sphinx.html#_generating_man_pages">16.4. Generating man pages</a></span></dt></dl></dd></dl></dd><dt><span class="part"><a href="tests.html">III. Tests</a></span></dt><dd><dl><dt><span class="chapter"><a href="shell.html">17. Erlang shell</a></span></dt><dd><dl><dt><span class="section"><a href="shell.html#_configuration_5">17.1. Configuration</a></span></dt><dt><span class="section"><a href="shell.html#_usage_3">17.2. Usage</a></span></dt></dl></dd><dt><span class="chapter"><a href="eunit.html">18. EUnit</a></span></dt><dd><dl><dt><span class="section"><a href="eunit.html#_writing_tests">18.1. Writing tests</a></span></dt><dt><span class="section"><a href="eunit.html#_configuration_6">18.2. Configuration</a></span></dt><dt><span class="section"><a href="eunit.html#_usage_4">18.3. Usage</a></span></dt></dl></dd><dt><span class="chapter"><a href="ct.html">19. Common Test</a></span></dt><dd><dl><dt><span class="section"><a href="ct.html#_writing_tests_2">19.1. Writing tests</a></span></dt><dt><span class="section"><a href="ct.html#_configuration_7">19.2. Configuration</a></span></dt><dt><span class="section"><a href="ct.html#_usage_5">19.3. Usage</a></span></dt></dl></dd><dt><span class="chapter"><a href="triq.html">20. Triq</a></span></dt><dt><span class="chapter"><a href="coverage.html">21. Code coverage</a></span></dt><dt><span class="chapter"><a href="ci.html">22. Continuous integration</a></span></dt><dd><dl><dt><span class="section"><a href="ci.html#_configuring_erlang_otp_versions_to_test">22.1. Configuring Erlang/OTP versions to test</a></span></dt><dt><span class="section"><a href="ci.html#_running_tests_across_all_configured_versions">22.2. Running tests across all configured versions</a></span></dt><dt><span class="section"><a href="ci.html#_extending_the_ci_targets">22.3. Extending the CI targets</a></span></dt></dl></dd><dt><span class="chapter"><a href="dialyzer.html">23. Dialyzer</a></span></dt><dd><dl><dt><span class="section"><a href="dialyzer.html#_how_it_works">23.1. How it works</a></span></dt><dt><span class="section"><a href="dialyzer.html#_configuration_8">23.2. Configuration</a></span></dt><dt><span class="section"><a href="dialyzer.html#_usage_6">23.3. Usage</a></span></dt></dl></dd><dt><span class="chapter"><a href="xref.html">24. Xref</a></span></dt></dl></dd><dt><span class="part"><a href="plugins.html">IV. Third-party plugins</a></span></dt><dd><dl><dt><span class="chapter"><a href="plugins_usage.html">25. External plugins</a></span></dt><dd><dl><dt><span class="section"><a href="plugins_usage.html#_loading_all_plugins_from_a_dependency">25.1. Loading all plugins from a dependency</a></span></dt><dt><span class="section"><a href="plugins_usage.html#_loading_one_plugin_from_a_dependency">25.2. Loading one plugin from a dependency</a></span></dt><dt><span class="section"><a href="plugins_usage.html#_writing_external_plugins">25.3. Writing external plugins</a></span></dt><dt><span class="section"><a href="plugins_usage.html#_early_stage_plugins">25.4. Early-stage plugins</a></span></dt><dt><span class="section"><a href="plugins_usage.html#_loading_plugins_local_to_the_application">25.5. Loading  plugins local to the application</a></span></dt></dl></dd><dt><span class="chapter"><a href="plugins_list.html">26. List of plugins</a></span></dt><dd><dl><dt><span class="section"><a href="plugins_list.html#_efene_mk">26.1. efene.mk</a></span></dt><dt><span class="section"><a href="plugins_list.html#_elixir_mk">26.2. elixir.mk</a></span></dt><dt><span class="section"><a href="plugins_list.html#_elvis_mk">26.3. elvis.mk</a></span></dt><dt><span class="section"><a href="plugins_list.html#_geas">26.4. geas</a></span></dt><dt><span class="section"><a href="plugins_list.html#_hexer_mk">26.5. hexer.mk</a></span></dt><dt><span class="section"><a href="plugins_list.html#_hexpm_mk">26.6. hexpm.mk</a></span></dt><dt><span class="section"><a href="plugins_list.html#_jorel">26.7. jorel</a></span></dt><dt><span class="section"><a href="plugins_list.html#_lfe_mk">26.8. lfe.mk</a></span></dt><dt><span class="section"><a href="plugins_list.html#_mix_mk">26.9. mix.mk</a></span></dt><dt><span class="section"><a href="plugins_list.html#_reload_mk">26.10. reload.mk</a></span></dt><dt><span class="section"><a href="plugins_list.html#_rust_mk">26.11. rust.mk</a></span></dt></dl></dd></dl></dd><dt><span class="part"><a href="about.html">V. About Erlang.mk</a></span></dt><dd><dl><dt><span class="chapter"><a href="why.html">27. Why Erlang.mk</a></span></dt><dd><dl><dt><span class="section"><a href="why.html#_erlang_mk_is_fast">27.1. Erlang.mk is fast</a></span></dt><dt><span class="section"><a href="why.html#_erlang_mk_gives_you_the_full_power_of_unix">27.2. Erlang.mk gives you the full power of Unix</a></span></dt><dt><span class="section"><a href="why.html#_erlang_mk_is_a_text_file">27.3. Erlang.mk is a text file</a></span></dt><dt><span class="section"><a href="why.html#_erlang_mk_can_manage_erlang_itself">27.4. Erlang.mk can manage Erlang itself</a></span></dt><dt><span class="section"><a href="why.html#_erlang_mk_can_do_more_than_erlang">27.5. Erlang.mk can do more than Erlang</a></span></dt><dt><span class="section"><a href="why.html#_erlang_mk_integrates_nicely_in_make_and_automake_projects">27.6. Erlang.mk integrates nicely in Make and Automake projects</a></span></dt></dl></dd><dt><span class="chapter"><a href="history.html">28. Short history</a></span></dt><dd><dl><dt><span class="section"><a href="history.html#_before_erlang_mk">28.1. Before Erlang.mk</a></span></dt><dt><span class="section"><a href="history.html#_lifetime_of_the_project">28.2. Lifetime of the project</a></span></dt></dl></dd><dt><span class="chapter"><a href="contributing.html">29. Contributing</a></span></dt><dd><dl><dt><span class="section"><a href="contributing.html#_priorities">29.1. Priorities</a></span></dt><dt><span class="section"><a href="contributing.html#_bugs">29.2. Bugs</a></span></dt><dt><span class="section"><a href="contributing.html#_code">29.3. Code</a></span></dt><dt><span class="section"><a href="contributing.html#_packages">29.4. Packages</a></span></dt><dt><span class="section"><a href="contributing.html#_documentation">29.5. Documentation</a></span></dt><dt><span class="section"><a href="contributing.html#_feature_requests">29.6. Feature requests</a></span></dt></dl></dd></dl></dd></dl></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="installation.html">Next</a></td></tr></table></div>
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diff --git a/guide/updating.html b/guide/updating.html
index 7c53495..6d8e386 100644
--- a/guide/updating.html
+++ b/guide/updating.html
@@ -71,7 +71,9 @@ the <a class="ulink" href="https://github.com/ninenines/erlang.mk/blob/master/bu
 and customize to your needs.</p><p>You can also name the file differently or put it in a separate folder
 by modifying the value for <code class="literal">ERLANG_MK_BUILD_CONFIG</code>. You can also
 tell Erlang.mk to use a different temporary directory by changing
-the <code class="literal">ERLANG_MK_BUILD_DIR</code> variable.</p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="overview.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="limitations.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> </td></tr></table></div>
+the <code class="literal">ERLANG_MK_BUILD_DIR</code> variable.</p><p>If you want to use a different repository or a specific commit for
+updating, you may use the variables <code class="literal">ERLANG_MK_REPO</code> and
+<code class="literal">ERLANG_MK_COMMIT</code>.</p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="overview.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="limitations.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> </td></tr></table></div>
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