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| <div class="section" id="cmake-lang-implicit-link-directories"> |
| <span id="variable:CMAKE_<LANG>_IMPLICIT_LINK_DIRECTORIES"></span><h1>CMAKE_<LANG>_IMPLICIT_LINK_DIRECTORIES<a class="headerlink" href="#cmake-lang-implicit-link-directories" title="Permalink to this headline">ΒΆ</a></h1> |
| <p>Implicit linker search path detected for language <code class="docutils literal notranslate"><span class="pre"><LANG></span></code>.</p> |
| <p>Compilers typically pass directories containing language runtime |
| libraries and default library search paths when they invoke a linker. |
| These paths are implicit linker search directories for the compiler's |
| language. For each language enabled by the <span class="target" id="index-0-command:project"></span><a class="reference internal" href="../command/project.html#command:project" title="project"><code class="xref cmake cmake-command docutils literal notranslate"><span class="pre">project()</span></code></a> or |
| <span class="target" id="index-0-command:enable_language"></span><a class="reference internal" href="../command/enable_language.html#command:enable_language" title="enable_language"><code class="xref cmake cmake-command docutils literal notranslate"><span class="pre">enable_language()</span></code></a> command, CMake automatically detects these |
| directories and reports the results in this variable.</p> |
| <p>When linking to a static library, CMake adds the implicit link directories |
| from this variable for each language used in the static library (except |
| the language whose compiler is used to drive linking). In the case of an |
| imported static library, the <span class="target" id="index-0-prop_tgt:IMPORTED_LINK_INTERFACE_LANGUAGES"></span><a class="reference internal" href="../prop_tgt/IMPORTED_LINK_INTERFACE_LANGUAGES.html#prop_tgt:IMPORTED_LINK_INTERFACE_LANGUAGES" title="IMPORTED_LINK_INTERFACE_LANGUAGES"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">IMPORTED_LINK_INTERFACE_LANGUAGES</span></code></a> |
| target property lists the languages whose implicit link information is |
| needed. If any of the languages is not enabled, its value for the |
| <code class="docutils literal notranslate"><span class="pre">CMAKE_<LANG>_IMPLICIT_LINK_DIRECTORIES</span></code> variable may instead be provided |
| by the project. Or, a <span class="target" id="index-0-variable:CMAKE_TOOLCHAIN_FILE"></span><a class="reference internal" href="CMAKE_TOOLCHAIN_FILE.html#variable:CMAKE_TOOLCHAIN_FILE" title="CMAKE_TOOLCHAIN_FILE"><code class="xref cmake cmake-variable docutils literal notranslate"><span class="pre">toolchain</span> <span class="pre">file</span></code></a> |
| may set the variable to a value known for the specified toolchain. It will |
| either be overridden when the language is enabled, or used as a fallback.</p> |
| <p>Some toolchains read implicit directories from an environment variable such as |
| <code class="docutils literal notranslate"><span class="pre">LIBRARY_PATH</span></code>. If using such an environment variable, keep its value |
| consistent when operating in a given build tree because CMake saves the value |
| detected when first creating a build tree.</p> |
| <p>If policy <span class="target" id="index-0-policy:CMP0060"></span><a class="reference internal" href="../policy/CMP0060.html#policy:CMP0060" title="CMP0060"><code class="xref cmake cmake-policy docutils literal notranslate"><span class="pre">CMP0060</span></code></a> is not set to <code class="docutils literal notranslate"><span class="pre">NEW</span></code>, then when a library in one |
| of these directories is given by full path to <span class="target" id="index-0-command:target_link_libraries"></span><a class="reference internal" href="../command/target_link_libraries.html#command:target_link_libraries" title="target_link_libraries"><code class="xref cmake cmake-command docutils literal notranslate"><span class="pre">target_link_libraries()</span></code></a> |
| CMake will generate the <code class="docutils literal notranslate"><span class="pre">-l<name></span></code> form on link lines for historical |
| purposes.</p> |
| <p>See also the <span class="target" id="index-0-variable:CMAKE_<LANG>_IMPLICIT_LINK_LIBRARIES"></span><a class="reference internal" href="CMAKE_LANG_IMPLICIT_LINK_LIBRARIES.html#variable:CMAKE_<LANG>_IMPLICIT_LINK_LIBRARIES" title="CMAKE_<LANG>_IMPLICIT_LINK_LIBRARIES"><code class="xref cmake cmake-variable docutils literal notranslate"><span class="pre">CMAKE_<LANG>_IMPLICIT_LINK_LIBRARIES</span></code></a> variable.</p> |
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