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<title>Nine Nines: Limitations</title>
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<h1 class="lined-header"><span>Limitations</span></h1>
<div class="paragraph"><p>No software is perfect.</p></div>
<div class="paragraph"><p>It’s very important, when evaluating and when using a tool,
to understand its limitations, so as to avoid making mistakes
and wasting valuable time.</p></div>
<div class="paragraph"><p>This chapter lists all known limitations of Erlang.mk.</p></div>
<div class="sect1">
<h2 id="_erlang_must_be_available">Erlang must be available</h2>
<div class="sectionbody">
<div class="paragraph"><p>Currently Erlang.mk requires you to install Erlang beforehand.
Installing Erlang is not always easy, particularly if you need
a specific version of Erlang for a specific project.</p></div>
<div class="paragraph"><p>In addition, the Erlang being used must be in your <code>$PATH</code>
before you use Erlang.mk.</p></div>
<div class="paragraph"><p>In the future we envision, Erlang.mk could manage the Erlang
version you need to use a project. Erlang.mk already does this
for running tests when using <code>make ci</code>, so doing this during
development is just a step away.</p></div>
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<div class="sect1">
<h2 id="_spaces_in_path">Spaces in path</h2>
<div class="sectionbody">
<div class="paragraph"><p>Erlang.mk will currently not work properly if the path to the
project contains spaces. To check if that is the case, use the
command <code>pwd</code>.</p></div>
<div class="paragraph"><p>This issue is due to how Makefiles work. There might be ways
to solve it, we have not given up on it, but it’s very low
priority considering how simple the workaround is.</p></div>
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<div class="sect1">
<h2 id="_dependency_tracking_and_modification_times">Dependency tracking and modification times</h2>
<div class="sectionbody">
<div class="paragraph"><p>Erlang source files that depend on other files will have their
modification time updated when they need to be recompiled due
to a dependency having changed. This could cause some editors to
think the file changed when it didn’t.</p></div>
<div class="paragraph"><p>Erlang.mk must use this method in order to be able to compile
files in one <code>erlc</code> invocation. The benefits greatly outweigh
the issue in this case and so there are currently no plans to
fix this behavior.</p></div>
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<h3>
Erlang.mk
1
User Guide
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<h4>Version select</h4>
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<li><a href="/docs/en/erlang.mk/1/guide">1</a></li>
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