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+ <hr/> +</div> + <div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article"> + <div itemprop="articleBody"> + + <section id="using-proj-in-cmake-projects"> +<span id="cmake"></span><h1>Using PROJ in CMake projects<a class="headerlink" href="#using-proj-in-cmake-projects" title="Permalink to this headline">¶</a></h1> +<p>The recommended way to use the PROJ library in a CMake project is to +link to the imported library target <code class="docutils literal notranslate"><span class="pre">PROJ::proj</span></code> provided by +the CMake configuration which comes with the library. Typical usage is:</p> +<div class="highlight-none notranslate"><div class="highlight"><pre><span></span>find_package(PROJ CONFIG REQUIRED) + +target_link_libraries(MyApp PRIVATE PROJ::proj) +</pre></div> +</div> +<p>By adding the imported library target <code class="docutils literal notranslate"><span class="pre">PROJ::proj</span></code> to the +target link libraries, CMake will also pass the include directories to +the compiler.</p> +<p>The CMake command <code class="docutils literal notranslate"><span class="pre">find_package</span></code> will look for the configuration in a +number of places. The lookup can be adjusted for all packages by setting +the cache variable or environment variable <code class="docutils literal notranslate"><span class="pre">CMAKE_PREFIX_PATH</span></code>. In +particular, CMake will consult (and set) the cache variable +<code class="docutils literal notranslate"><span class="pre">PROJ_DIR</span></code>.</p> +<p>The old CMake name for the PROJ project was “PROJ4” and the switch to +the name “PROJ” was made with version 7.0. So if you expect your +package to work with pre-7.0 versions of PROJ, you will need to use</p> +<div class="highlight-none notranslate"><div class="highlight"><pre><span></span>find_package(PROJ4) +target_link_libraries(MyApp PRIVATE ${PROJ4_LIBRARIES}) +include_directories(${PROJ4_INCLUDE_DIRS}) +</pre></div> +</div> +<p>This will also find version 7.0. This use of the PROJ4 name will be +phased out at some point.</p> +</section> + + + </div> + </div> + <footer><div class="rst-footer-buttons" role="navigation" aria-label="Footer"> + <a href="reference/cpp/io.html" class="btn btn-neutral float-left" title="io namespace" accesskey="p" rel="prev"><span class="fa fa-arrow-circle-left" aria-hidden="true"></span> Previous</a> + <a href="bindings.html" class="btn btn-neutral float-right" title="Language bindings" accesskey="n" rel="next">Next <span class="fa fa-arrow-circle-right" aria-hidden="true"></span></a> + </div> + + <hr/> + + <div role="contentinfo"> + <p>© Copyright 1983-2022. + <span class="lastupdated">Last updated on 22 Mar 2022. + </span></p> + </div> + + Built with <a href="https://www.sphinx-doc.org/">Sphinx</a> using a + <a href="https://github.com/readthedocs/sphinx_rtd_theme">theme</a> + provided by <a href="https://readthedocs.org">Read the Docs</a>. + + +</footer> + </div> + </div> + </section> + </div> + <script> + jQuery(function () { + SphinxRtdTheme.Navigation.enable(true); + }); + </script> + +</body> +</html>
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