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<h1 id="usage">Usage</h1>
<p><code>Task.mk</code> can be included in any standard <code>GNUMakefile</code>.
If it's been properly sourced you will have access to the below features/recipes.</p>
<p>See <a href="/task.mk/examples">examples</a> for more info.</p>
<h2 id="builtin-recipes">Builtin Recipes</h2>
<h3 id="help">Help</h3>
<p>Invoked with either <code>make help</code> or <code>make h</code>.</p>
<p>Adding goals to the builtin help recipe just requires documenting your <code>Makefile</code> with comments.
The format is <code>## &lt;recipe&gt; |&gt; &lt;msg&gt;</code> or <code>&lt;recipe&gt;: ## &lt;msg&gt;</code></p>
<div class="highlight"><pre><span></span><code><a id="__codelineno-0-1" name="__codelineno-0-1" href="#__codelineno-0-1"></a><span class="c">## build |&gt; build the project</span>
<a id="__codelineno-0-2" name="__codelineno-0-2" href="#__codelineno-0-2"></a><span class="nf">build</span><span class="o">:</span>
<a id="__codelineno-0-3" name="__codelineno-0-3" href="#__codelineno-0-3"></a><span class="w"> </span>...
<a id="__codelineno-0-4" name="__codelineno-0-4" href="#__codelineno-0-4"></a>
<a id="__codelineno-0-5" name="__codelineno-0-5" href="#__codelineno-0-5"></a><span class="nf">build</span><span class="o">:</span><span class="w"> </span><span class="c">## build the project</span>
</code></pre></div>
<p>Now when you invoke <code>make help</code> it will parse these and generate your help output.
In addition you can add raw text to the help output using the format <code>### &lt;rawmsg&gt;</code>.</p>
<p>Both recipe documentation and raw messages can be modified with additional arguments delimited by <code>|&gt;</code>.</p>
<p>For example:</p>
<div class="highlight"><pre><span></span><code><a id="__codelineno-1-1" name="__codelineno-1-1" href="#__codelineno-1-1"></a><span class="c">### build related recipes |&gt; --align center --divider</span>
<a id="__codelineno-1-2" name="__codelineno-1-2" href="#__codelineno-1-2"></a><span class="nf">build</span><span class="o">:</span><span class="w"> </span><span class="c">## build the project |&gt; --msg-style bold</span>
<a id="__codelineno-1-3" name="__codelineno-1-3" href="#__codelineno-1-3"></a><span class="w"> </span>...
<a id="__codelineno-1-4" name="__codelineno-1-4" href="#__codelineno-1-4"></a><span class="nf">package</span><span class="o">:</span><span class="w"> </span><span class="c">## package the project |&gt; -gs b_cyan</span>
</code></pre></div>
<p><code>Task.mk</code> can also generate recipe specific help regardless of whether a goal is documented.
This can be invoked by appending the name of a recipe to help call: <code>make help build</code>.</p>
<p>All recipes prefixed with and underscore will be hidden even if documented.
However, they can be viewed by invoking <code>make _help</code>.</p>
<h3 id="vars">Vars</h3>
<p>In addition to a generic help output you can expose some configuration settings with <code>make vars</code> or <code>make v</code>.
To do so define the variables you'd like to print with <code>PRINT_VARS := VAR1 VAR2 VAR3</code>.</p>
<h2 id="builtin-functions">Builtin Functions</h2>
<h3 id="phonify">Phonify</h3>
<p>Phonify is a new experimental feature of <code>task.mk</code> that solves one of the biggest gotchas of using <code>make</code> as a task runner!
It stands to reason the tasks you document are likely to all be phony recipes
Rather than write <code>.PHONY: &lt;goal&gt;</code> repeatedly, simply enable <code>task.mk</code>'s phonifier.</p>
<p><code>Task.mk</code> will then parse your <code>Makefile</code> for documented tasks and
generate the necessary <code>.PHONY: &lt;recipes&gt;</code> line to ensure they are always executed.
To use this feature set the <code>PHONIFY</code> environment variable before including <code>.task.mk</code>.
To avoid adding a documented task/recipe to <code>.PHONY</code>, use <code>|&gt; --not-phony</code> after the recipe message.</p>
<h3 id="tprint">Tprint</h3>
<p>Besides the <code>help</code> and <code>vars</code> recipes you can use a custom make function to format your text for fancier output.
For this there are two options depending on your needs <code>tprint</code> or <code>tprint-verbose</code>
(<code>tprint-verbose</code> is for use within a multiline sub-shell that has already been silenced,
see the version-check rule of this project's <code>Makefile</code> for an example).</p>
<p>To use <code>tprint</code> you call it with the builtin <code>make</code> call function.
It accepts only one argument: an unquoted f-string literal.
All strings passed to <code>tprint</code> have access to an object <code>ansi</code> or <code>a</code> for simplicity.
This stores ANSI escape codes which can be used to style your text.</p>
<div class="highlight"><pre><span></span><code><a id="__codelineno-2-1" name="__codelineno-2-1" href="#__codelineno-2-1"></a><span class="nf">.PHONY</span><span class="o">:</span><span class="w"> </span><span class="n">build</span>
<a id="__codelineno-2-2" name="__codelineno-2-2" href="#__codelineno-2-2"></a><span class="nf">build</span><span class="o">:</span><span class="w"> </span><span class="c">## compile the source</span>
<a id="__codelineno-2-3" name="__codelineno-2-3" href="#__codelineno-2-3"></a><span class="w"> </span><span class="k">$(</span>call<span class="w"> </span>tprint,<span class="o">{</span>a.cyan<span class="o">}</span>Build<span class="w"> </span>Starting<span class="o">{</span>a.end<span class="o">}</span><span class="k">)</span>
<a id="__codelineno-2-4" name="__codelineno-2-4" href="#__codelineno-2-4"></a><span class="w"> </span>...
<a id="__codelineno-2-5" name="__codelineno-2-5" href="#__codelineno-2-5"></a><span class="w"> </span><span class="k">$(</span>call<span class="w"> </span>tprint,<span class="o">{</span>a.green<span class="o">}</span>Build<span class="w"> </span>Finished<span class="o">{</span>a.end<span class="o">}</span><span class="k">)</span>
</code></pre></div>
<p>See this projects <code>make info</code> for more examples of <code>tprint</code>.</p>
<p>To see the available colors and formatting(bold,italic,etc.) use the hidden recipe <code>make _print-ansi</code>.</p>
<p>In addition, you can use custom colors using the builtin <code>ansi.custom</code> or (<code>a.custom</code>) method.
It has two optional arguments <code>fg</code> and <code>bg</code>. Which can be used to specify either an 8-bit color from the <a href="https://en.wikipedia.org/wiki/8-bit_color">256 colors</a>.
Or a tuple/list to define an RBG 24-bit color, for instance <code>a.custom(fg=(5,10,255))</code>.
See this project's <code>make info</code> for an example.</p>
<h2 id="configuration">Configuration</h2>
<p>You can quickly customize some of the default behavior of <code>task.mk</code> by overriding the below variables prior to the <code>-include .task.mk</code>.
These can also for instance included in a seperate file <code>.task.cfg.mk</code>.</p>
<div class="highlight"><pre><span></span><code><a id="__codelineno-3-1" name="__codelineno-3-1" href="#__codelineno-3-1"></a><span class="c"># ---- [config] ---- #</span>
<a id="__codelineno-3-2" name="__codelineno-3-2" href="#__codelineno-3-2"></a><span class="nv">HEADER_STYLE</span><span class="w"> </span><span class="o">?=</span><span class="w"> </span>b_cyan
<a id="__codelineno-3-3" name="__codelineno-3-3" href="#__codelineno-3-3"></a><span class="nv">ACCENT_STYLE</span><span class="w"> </span><span class="o">?=</span><span class="w"> </span>b_yellow
<a id="__codelineno-3-4" name="__codelineno-3-4" href="#__codelineno-3-4"></a><span class="nv">PARAMS_STYLE</span><span class="w"> </span><span class="o">?=</span><span class="w"> </span><span class="k">$(</span>ACCENT_STYLE<span class="k">)</span>
<a id="__codelineno-3-5" name="__codelineno-3-5" href="#__codelineno-3-5"></a><span class="nv">GOAL_STYLE</span><span class="w"> </span><span class="o">?=</span><span class="w"> </span><span class="k">$(</span>ACCENT_STYLE<span class="k">)</span>
<a id="__codelineno-3-6" name="__codelineno-3-6" href="#__codelineno-3-6"></a><span class="nv">MSG_STYLE</span><span class="w"> </span><span class="o">?=</span><span class="w"> </span>faint
<a id="__codelineno-3-7" name="__codelineno-3-7" href="#__codelineno-3-7"></a><span class="nv">DIVIDER_STYLE</span><span class="w"> </span><span class="o">?=</span><span class="w"> </span>default
<a id="__codelineno-3-8" name="__codelineno-3-8" href="#__codelineno-3-8"></a><span class="nv">DIVIDER</span><span class="w"> </span><span class="o">?=</span><span class="w"> </span>
<a id="__codelineno-3-9" name="__codelineno-3-9" href="#__codelineno-3-9"></a><span class="nv">HELP_SEP</span><span class="w"> </span><span class="o">?=</span><span class="w"> </span>
<a id="__codelineno-3-10" name="__codelineno-3-10" href="#__codelineno-3-10"></a><span class="c"># python f-string literals</span>
<a id="__codelineno-3-11" name="__codelineno-3-11" href="#__codelineno-3-11"></a><span class="nv">EPILOG</span><span class="w"> </span><span class="o">?=</span>
<a id="__codelineno-3-12" name="__codelineno-3-12" href="#__codelineno-3-12"></a><span class="nv">USAGE</span><span class="w"> </span><span class="o">?={</span>ansi.<span class="k">$(</span>HEADER_STYLE<span class="k">)</span><span class="o">}</span>usage<span class="o">{</span>ansi.end<span class="o">}</span>:<span class="se">\n</span><span class="w"> </span>make<span class="w"> </span>&lt;recipe&gt;<span class="se">\n</span>
<a id="__codelineno-3-13" name="__codelineno-3-13" href="#__codelineno-3-13"></a><span class="nv">TASKMK_SHELL</span><span class="w"> </span><span class="o">?=</span>
<a id="__codelineno-3-14" name="__codelineno-3-14" href="#__codelineno-3-14"></a><span class="nv">PHONIFY</span><span class="w"> </span><span class="o">?=</span>
</code></pre></div>
<p>To use a custom color for one of the predefined configuration variables specify only the custom method.</p>
<div class="highlight"><pre><span></span><code><a id="__codelineno-4-1" name="__codelineno-4-1" href="#__codelineno-4-1"></a><span class="nv">HEADER_STYLE</span><span class="w"> </span><span class="o">=</span><span class="w"> </span>custom<span class="o">(</span><span class="nv">fg</span><span class="o">=</span><span class="m">171</span>,bg<span class="o">=</span><span class="m">227</span><span class="o">)</span>
</code></pre></div>
<p><strong>NOTE</strong>: <code>HELP_SEP</code> does not change the argument definitions syntax only the format of <code>make help</code>.</p>
<h2 id="advanced-usage-embedded-scripts">Advanced Usage: Embedded Scripts</h2>
<p>You can take advantage of the builtin python script runner and write multi-line python scripts of your own.
This is a simple example but a few lines of python in your <code>Makefile</code>
may be easier than balancing sub-shells and strung together awk commands.</p>
<p>When <code>make</code> expands the function it will take the parameters passed to <code>py</code> and expand them.
<code>$(1)</code> is the variable name and <code>$(2)</code> in this case is the implicit pattern from the rule. Pay attention to quotes.
If you need to debug your python script, use <code>TASKMK_DEBUG=1</code> when you run <code>make</code> and it will first print the script that will be piped to <code>python</code>.</p>
<div class="highlight"><pre><span></span><code><a id="__codelineno-5-1" name="__codelineno-5-1" href="#__codelineno-5-1"></a><span class="cp">define list_files_py</span>
<a id="__codelineno-5-2" name="__codelineno-5-2" href="#__codelineno-5-2"></a><span class="err">from</span><span class="w"> </span><span class="err">pathlib</span><span class="w"> </span><span class="err">import</span><span class="w"> </span><span class="err">Path</span>
<a id="__codelineno-5-3" name="__codelineno-5-3" href="#__codelineno-5-3"></a><span class="err">print(</span><span class="s2">&quot;files in $(2)&quot;</span><span class="err">)</span>
<a id="__codelineno-5-4" name="__codelineno-5-4" href="#__codelineno-5-4"></a><span class="err">print([f.name</span><span class="w"> </span><span class="err">for</span><span class="w"> </span><span class="err">f</span><span class="w"> </span><span class="err">in</span><span class="w"> </span><span class="err">(Path(</span><span class="s2">&quot;$(2)&quot;</span><span class="err">).iterdir())])</span>
<a id="__codelineno-5-5" name="__codelineno-5-5" href="#__codelineno-5-5"></a><span class="cp">endef</span>
<a id="__codelineno-5-6" name="__codelineno-5-6" href="#__codelineno-5-6"></a>
<a id="__codelineno-5-7" name="__codelineno-5-7" href="#__codelineno-5-7"></a><span class="c">## list-% | use pathlib.Path to list files</span>
<a id="__codelineno-5-8" name="__codelineno-5-8" href="#__codelineno-5-8"></a><span class="nf">list-%</span><span class="o">:</span>
<a id="__codelineno-5-9" name="__codelineno-5-9" href="#__codelineno-5-9"></a><span class="w"> </span><span class="k">$(</span>call<span class="w"> </span>py,list_files_py,<span class="nv">$*</span><span class="k">)</span>
</code></pre></div>
<p>For what it's worth there is also a predefined function for <code>bash</code> (named <code>tbash</code>) as well should you need to accomplish something similar of more easily embedding your bash script rather than having to escape every line with a backslash.</p>
<div class="highlight"><pre><span></span><code><a id="__codelineno-6-1" name="__codelineno-6-1" href="#__codelineno-6-1"></a><span class="cp">define bash_script</span>
<a id="__codelineno-6-2" name="__codelineno-6-2" href="#__codelineno-6-2"></a><span class="nf">figlet task.mk 2&gt;/dev/null || echo &#39;no figlet </span><span class="o">:</span>(&#39;
<a id="__codelineno-6-3" name="__codelineno-6-3" href="#__codelineno-6-3"></a><span class="err">echo</span><span class="w"> </span><span class="s2">&quot;This is from bash&quot;</span>
<a id="__codelineno-6-4" name="__codelineno-6-4" href="#__codelineno-6-4"></a><span class="err">cat</span><span class="w"> </span><span class="err">/etc/hostname</span>
<a id="__codelineno-6-5" name="__codelineno-6-5" href="#__codelineno-6-5"></a><span class="err">printf</span><span class="w"> </span><span class="s2">&quot;%s\n&quot;</span><span class="w"> </span><span class="s2">&quot;$(2)&quot;</span>
<a id="__codelineno-6-6" name="__codelineno-6-6" href="#__codelineno-6-6"></a><span class="cp">endef</span>
<a id="__codelineno-6-7" name="__codelineno-6-7" href="#__codelineno-6-7"></a><span class="nf">.PHONY</span><span class="o">:</span><span class="w"> </span><span class="n">test</span>-<span class="n">bash</span>
<a id="__codelineno-6-8" name="__codelineno-6-8" href="#__codelineno-6-8"></a><span class="nf">test-bash</span><span class="o">:</span>
<a id="__codelineno-6-9" name="__codelineno-6-9" href="#__codelineno-6-9"></a><span class="w"> </span><span class="k">$(</span>call<span class="w"> </span>tbash,bash_script,test<span class="w"> </span>bash<span class="w"> </span>multiline<span class="k">)</span>
</code></pre></div>
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