title: Why is there no way to specify install options for binaries in ebuilds?
body: <p>The Gentoo's ebuild mecanism comes with several built-in eclasses/commands to manage (amongst others) libraries, binaries, executables, etc... Some of them are really useful to work at installation phase, like setting permissions, modifying the default installation directory, etc...</p>
  <p>About library installation, the <a href="https://devmanual.gentoo.org/eclass-reference/ebuild/index.html#lbAQ" rel="nofollow noreferrer">ebuild documentation</a> says :</p>
  <blockquote>
  <p><strong>dolib  [list of more libraries]</strong></p>
  <p>Installs a library or a list of libraries into DESTTREE/lib. Creates all necessary dirs.</p>
  <p><strong>libopts [options for install(1)]</strong></p>
  <p>Can be used to define options for the install function used in the dolib functions. The default is -m0644.</p>
  </blockquote>
  <p>The same is available for &quot;executables&quot;: <strong>exeopts</strong> works with <strong>doexe</strong>.</p>
  <h2>Question</h2>
  <p>The thing I really don't understand is that why <strong>dobin</strong> and <strong>dosbin</strong> exist but not <strong>binopts</strong> and <strong>sbinopts</strong>?</p>
  <p>Is it possible have <strong>libopts</strong> or <strong>exeopts</strong> equivalents for <strong>dobin</strong> and <strong>dosbin</strong>, to manage permissions at installation phase?</p>