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| <div class="section" id="target-link-libraries"> |
| <span id="command:target_link_libraries"></span><h1><a class="toc-backref" href="#id2">target_link_libraries</a><a class="headerlink" href="#target-link-libraries" title="Permalink to this headline">¶</a></h1> |
| <div class="contents topic" id="contents"> |
| <p class="topic-title">Contents</p> |
| <ul class="simple"> |
| <li><p><a class="reference internal" href="#target-link-libraries" id="id2">target_link_libraries</a></p> |
| <ul> |
| <li><p><a class="reference internal" href="#overview" id="id3">Overview</a></p></li> |
| <li><p><a class="reference internal" href="#libraries-for-a-target-and-or-its-dependents" id="id4">Libraries for a Target and/or its Dependents</a></p></li> |
| <li><p><a class="reference internal" href="#libraries-for-both-a-target-and-its-dependents" id="id5">Libraries for both a Target and its Dependents</a></p></li> |
| <li><p><a class="reference internal" href="#libraries-for-a-target-and-or-its-dependents-legacy" id="id6">Libraries for a Target and/or its Dependents (Legacy)</a></p></li> |
| <li><p><a class="reference internal" href="#libraries-for-dependents-only-legacy" id="id7">Libraries for Dependents Only (Legacy)</a></p></li> |
| <li><p><a class="reference internal" href="#linking-object-libraries" id="id8">Linking Object Libraries</a></p> |
| <ul> |
| <li><p><a class="reference internal" href="#linking-object-libraries-via-target-objects" id="id9">Linking Object Libraries via $<TARGET_OBJECTS></a></p></li> |
| </ul> |
| </li> |
| <li><p><a class="reference internal" href="#cyclic-dependencies-of-static-libraries" id="id10">Cyclic Dependencies of Static Libraries</a></p></li> |
| <li><p><a class="reference internal" href="#creating-relocatable-packages" id="id11">Creating Relocatable Packages</a></p></li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <p>Specify libraries or flags to use when linking a given target and/or |
| its dependents. <a class="reference internal" href="../manual/cmake-buildsystem.7.html#target-usage-requirements"><span class="std std-ref">Usage requirements</span></a> |
| from linked library targets will be propagated. Usage requirements |
| of a target's dependencies affect compilation of its own sources.</p> |
| <div class="section" id="overview"> |
| <h2><a class="toc-backref" href="#id3">Overview</a><a class="headerlink" href="#overview" title="Permalink to this headline">¶</a></h2> |
| <p>This command has several signatures as detailed in subsections below. |
| All of them have the general form</p> |
| <div class="highlight-cmake notranslate"><div class="highlight"><pre><span></span><span class="nf">target_link_libraries(</span><span class="nv"><target></span><span class="w"> </span><span class="p">...</span><span class="w"> </span><span class="nv"><item>...</span><span class="w"> </span><span class="p">...</span><span class="nf">)</span><span class="w"></span> |
| </pre></div> |
| </div> |
| <p>The named <code class="docutils literal notranslate"><span class="pre"><target></span></code> must have been created by a command such as |
| <span class="target" id="index-0-command:add_executable"></span><a class="reference internal" href="add_executable.html#command:add_executable" title="add_executable"><code class="xref cmake cmake-command docutils literal notranslate"><span class="pre">add_executable()</span></code></a> or <span class="target" id="index-0-command:add_library"></span><a class="reference internal" href="add_library.html#command:add_library" title="add_library"><code class="xref cmake cmake-command docutils literal notranslate"><span class="pre">add_library()</span></code></a> and must not be an |
| <a class="reference internal" href="../manual/cmake-buildsystem.7.html#alias-targets"><span class="std std-ref">ALIAS target</span></a>. If policy <span class="target" id="index-0-policy:CMP0079"></span><a class="reference internal" href="../policy/CMP0079.html#policy:CMP0079" title="CMP0079"><code class="xref cmake cmake-policy docutils literal notranslate"><span class="pre">CMP0079</span></code></a> is not |
| set to <code class="docutils literal notranslate"><span class="pre">NEW</span></code> then the target must have been created in the current |
| directory. Repeated calls for the same <code class="docutils literal notranslate"><span class="pre"><target></span></code> append items in |
| the order called.</p> |
| <div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.13: </span>The <code class="docutils literal notranslate"><span class="pre"><target></span></code> doesn't have to be defined in the same directory as the |
| <code class="docutils literal notranslate"><span class="pre">target_link_libraries</span></code> call.</p> |
| </div> |
| <p>Each <code class="docutils literal notranslate"><span class="pre"><item></span></code> may be:</p> |
| <ul> |
| <li><p><strong>A library target name</strong>: The generated link line will have the |
| full path to the linkable library file associated with the target. |
| The buildsystem will have a dependency to re-link <code class="docutils literal notranslate"><span class="pre"><target></span></code> if |
| the library file changes.</p> |
| <p>The named target must be created by <span class="target" id="index-1-command:add_library"></span><a class="reference internal" href="add_library.html#command:add_library" title="add_library"><code class="xref cmake cmake-command docutils literal notranslate"><span class="pre">add_library()</span></code></a> within |
| the project or as an <a class="reference internal" href="../manual/cmake-buildsystem.7.html#imported-targets"><span class="std std-ref">IMPORTED library</span></a>. |
| If it is created within the project an ordering dependency will |
| automatically be added in the build system to make sure the named |
| library target is up-to-date before the <code class="docutils literal notranslate"><span class="pre"><target></span></code> links.</p> |
| <p>If an imported library has the <span class="target" id="index-0-prop_tgt:IMPORTED_NO_SONAME"></span><a class="reference internal" href="../prop_tgt/IMPORTED_NO_SONAME.html#prop_tgt:IMPORTED_NO_SONAME" title="IMPORTED_NO_SONAME"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">IMPORTED_NO_SONAME</span></code></a> |
| target property set, CMake may ask the linker to search for |
| the library instead of using the full path |
| (e.g. <code class="docutils literal notranslate"><span class="pre">/usr/lib/libfoo.so</span></code> becomes <code class="docutils literal notranslate"><span class="pre">-lfoo</span></code>).</p> |
| <p>The full path to the target's artifact will be quoted/escaped for |
| the shell automatically.</p> |
| </li> |
| <li><p><strong>A full path to a library file</strong>: The generated link line will |
| normally preserve the full path to the file. The buildsystem will |
| have a dependency to re-link <code class="docutils literal notranslate"><span class="pre"><target></span></code> if the library file changes.</p> |
| <p>There are some cases where CMake may ask the linker to search for |
| the library (e.g. <code class="docutils literal notranslate"><span class="pre">/usr/lib/libfoo.so</span></code> becomes <code class="docutils literal notranslate"><span class="pre">-lfoo</span></code>), such |
| as when a shared library is detected to have no <code class="docutils literal notranslate"><span class="pre">SONAME</span></code> field. |
| See 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> for discussion of another case.</p> |
| <p>If the library file is in a macOS framework, the <code class="docutils literal notranslate"><span class="pre">Headers</span></code> directory |
| of the framework will also be processed as a |
| <a class="reference internal" href="../manual/cmake-buildsystem.7.html#target-usage-requirements"><span class="std std-ref">usage requirement</span></a>. This has the same |
| effect as passing the framework directory as an include directory.</p> |
| <div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.8: </span>On <a class="reference internal" href="../manual/cmake-generators.7.html#visual-studio-generators"><span class="std std-ref">Visual Studio Generators</span></a> for VS 2010 and above, library files |
| ending in <code class="docutils literal notranslate"><span class="pre">.targets</span></code> will be treated as MSBuild targets files and |
| imported into generated project files. This is not supported by other |
| generators.</p> |
| </div> |
| <p>The full path to the library file will be quoted/escaped for |
| the shell automatically.</p> |
| </li> |
| <li><p><strong>A plain library name</strong>: The generated link line will ask the linker |
| to search for the library (e.g. <code class="docutils literal notranslate"><span class="pre">foo</span></code> becomes <code class="docutils literal notranslate"><span class="pre">-lfoo</span></code> or <code class="docutils literal notranslate"><span class="pre">foo.lib</span></code>).</p> |
| <p>The library name/flag is treated as a command-line string fragment and |
| will be used with no extra quoting or escaping.</p> |
| </li> |
| <li><p><strong>A link flag</strong>: Item names starting with <code class="docutils literal notranslate"><span class="pre">-</span></code>, but not <code class="docutils literal notranslate"><span class="pre">-l</span></code> or |
| <code class="docutils literal notranslate"><span class="pre">-framework</span></code>, are treated as linker flags. Note that such flags will |
| be treated like any other library link item for purposes of transitive |
| dependencies, so they are generally safe to specify only as private link |
| items that will not propagate to dependents.</p> |
| <p>Link flags specified here are inserted into the link command in the same |
| place as the link libraries. This might not be correct, depending on |
| the linker. Use the <span class="target" id="index-0-prop_tgt:LINK_OPTIONS"></span><a class="reference internal" href="../prop_tgt/LINK_OPTIONS.html#prop_tgt:LINK_OPTIONS" title="LINK_OPTIONS"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">LINK_OPTIONS</span></code></a> target property or |
| <span class="target" id="index-0-command:target_link_options"></span><a class="reference internal" href="target_link_options.html#command:target_link_options" title="target_link_options"><code class="xref cmake cmake-command docutils literal notranslate"><span class="pre">target_link_options()</span></code></a> command to add link |
| flags explicitly. The flags will then be placed at the toolchain-defined |
| flag position in the link command.</p> |
| <div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.13: </span><span class="target" id="index-1-prop_tgt:LINK_OPTIONS"></span><a class="reference internal" href="../prop_tgt/LINK_OPTIONS.html#prop_tgt:LINK_OPTIONS" title="LINK_OPTIONS"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">LINK_OPTIONS</span></code></a> target property and <span class="target" id="index-1-command:target_link_options"></span><a class="reference internal" href="target_link_options.html#command:target_link_options" title="target_link_options"><code class="xref cmake cmake-command docutils literal notranslate"><span class="pre">target_link_options()</span></code></a> |
| command. For earlier versions of CMake, use <span class="target" id="index-0-prop_tgt:LINK_FLAGS"></span><a class="reference internal" href="../prop_tgt/LINK_FLAGS.html#prop_tgt:LINK_FLAGS" title="LINK_FLAGS"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">LINK_FLAGS</span></code></a> |
| property instead.</p> |
| </div> |
| <p>The link flag is treated as a command-line string fragment and |
| will be used with no extra quoting or escaping.</p> |
| </li> |
| <li><p><strong>A generator expression</strong>: A <code class="docutils literal notranslate"><span class="pre">$<...></span></code> <span class="target" id="index-0-manual:cmake-generator-expressions(7)"></span><a class="reference internal" href="../manual/cmake-generator-expressions.7.html#manual:cmake-generator-expressions(7)" title="cmake-generator-expressions(7)"><code class="xref cmake cmake-manual docutils literal notranslate"><span class="pre">generator</span> <span class="pre">expression</span></code></a> may evaluate to any of the above |
| items or to a <a class="reference internal" href="../manual/cmake-language.7.html#cmake-language-lists"><span class="std std-ref">semicolon-separated list</span></a> of them. |
| If the <code class="docutils literal notranslate"><span class="pre">...</span></code> contains any <code class="docutils literal notranslate"><span class="pre">;</span></code> characters, e.g. after evaluation |
| of a <code class="docutils literal notranslate"><span class="pre">${list}</span></code> variable, be sure to use an explicitly quoted |
| argument <code class="docutils literal notranslate"><span class="pre">"$<...>"</span></code> so that this command receives it as a |
| single <code class="docutils literal notranslate"><span class="pre"><item></span></code>.</p> |
| <p>Additionally, a generator expression may be used as a fragment of |
| any of the above items, e.g. <code class="docutils literal notranslate"><span class="pre">foo$<1:_d></span></code>.</p> |
| <p>Note that generator expressions will not be used in OLD handling of |
| policy <span class="target" id="index-0-policy:CMP0003"></span><a class="reference internal" href="../policy/CMP0003.html#policy:CMP0003" title="CMP0003"><code class="xref cmake cmake-policy docutils literal notranslate"><span class="pre">CMP0003</span></code></a> or policy <span class="target" id="index-0-policy:CMP0004"></span><a class="reference internal" href="../policy/CMP0004.html#policy:CMP0004" title="CMP0004"><code class="xref cmake cmake-policy docutils literal notranslate"><span class="pre">CMP0004</span></code></a>.</p> |
| </li> |
| <li><p>A <code class="docutils literal notranslate"><span class="pre">debug</span></code>, <code class="docutils literal notranslate"><span class="pre">optimized</span></code>, or <code class="docutils literal notranslate"><span class="pre">general</span></code> keyword immediately followed |
| by another <code class="docutils literal notranslate"><span class="pre"><item></span></code>. The item following such a keyword will be used |
| only for the corresponding build configuration. The <code class="docutils literal notranslate"><span class="pre">debug</span></code> keyword |
| corresponds to the <code class="docutils literal notranslate"><span class="pre">Debug</span></code> configuration (or to configurations named |
| in the <span class="target" id="index-0-prop_gbl:DEBUG_CONFIGURATIONS"></span><a class="reference internal" href="../prop_gbl/DEBUG_CONFIGURATIONS.html#prop_gbl:DEBUG_CONFIGURATIONS" title="DEBUG_CONFIGURATIONS"><code class="xref cmake cmake-prop_gbl docutils literal notranslate"><span class="pre">DEBUG_CONFIGURATIONS</span></code></a> global property if it is set). |
| The <code class="docutils literal notranslate"><span class="pre">optimized</span></code> keyword corresponds to all other configurations. The |
| <code class="docutils literal notranslate"><span class="pre">general</span></code> keyword corresponds to all configurations, and is purely |
| optional. Higher granularity may be achieved for per-configuration |
| rules by creating and linking to |
| <a class="reference internal" href="../manual/cmake-buildsystem.7.html#imported-targets"><span class="std std-ref">IMPORTED library targets</span></a>. |
| These keywords are interpreted immediately by this command and therefore |
| have no special meaning when produced by a generator expression.</p></li> |
| </ul> |
| <p>Items containing <code class="docutils literal notranslate"><span class="pre">::</span></code>, such as <code class="docutils literal notranslate"><span class="pre">Foo::Bar</span></code>, are assumed to be |
| <a class="reference internal" href="../manual/cmake-buildsystem.7.html#imported-targets"><span class="std std-ref">IMPORTED</span></a> or <a class="reference internal" href="../manual/cmake-buildsystem.7.html#alias-targets"><span class="std std-ref">ALIAS</span></a> library |
| target names and will cause an error if no such target exists. |
| See policy <span class="target" id="index-0-policy:CMP0028"></span><a class="reference internal" href="../policy/CMP0028.html#policy:CMP0028" title="CMP0028"><code class="xref cmake cmake-policy docutils literal notranslate"><span class="pre">CMP0028</span></code></a>.</p> |
| <p>See the <span class="target" id="index-0-manual:cmake-buildsystem(7)"></span><a class="reference internal" href="../manual/cmake-buildsystem.7.html#manual:cmake-buildsystem(7)" title="cmake-buildsystem(7)"><code class="xref cmake cmake-manual docutils literal notranslate"><span class="pre">cmake-buildsystem(7)</span></code></a> manual for more on defining |
| buildsystem properties.</p> |
| </div> |
| <div class="section" id="libraries-for-a-target-and-or-its-dependents"> |
| <h2><a class="toc-backref" href="#id4">Libraries for a Target and/or its Dependents</a><a class="headerlink" href="#libraries-for-a-target-and-or-its-dependents" title="Permalink to this headline">¶</a></h2> |
| <div class="highlight-cmake notranslate"><div class="highlight"><pre><span></span><span class="nf">target_link_libraries(</span><span class="nv"><target></span><span class="w"></span> |
| <span class="w"> </span><span class="o"><</span><span class="no">PRIVATE</span><span class="p">|</span><span class="no">PUBLIC</span><span class="p">|</span><span class="no">INTERFACE</span><span class="o">></span><span class="w"> </span><span class="nv"><item>...</span><span class="w"></span> |
| <span class="w"> </span><span class="p">[</span><span class="o"><</span><span class="no">PRIVATE</span><span class="p">|</span><span class="no">PUBLIC</span><span class="p">|</span><span class="no">INTERFACE</span><span class="o">></span><span class="w"> </span><span class="nv"><item>...</span><span class="p">]...</span><span class="nf">)</span><span class="w"></span> |
| </pre></div> |
| </div> |
| <p>The <code class="docutils literal notranslate"><span class="pre">PUBLIC</span></code>, <code class="docutils literal notranslate"><span class="pre">PRIVATE</span></code> and <code class="docutils literal notranslate"><span class="pre">INTERFACE</span></code> keywords can be used to |
| specify both the link dependencies and the link interface in one command. |
| Libraries and targets following <code class="docutils literal notranslate"><span class="pre">PUBLIC</span></code> are linked to, and are made |
| part of the link interface. Libraries and targets following <code class="docutils literal notranslate"><span class="pre">PRIVATE</span></code> |
| are linked to, but are not made part of the link interface. Libraries |
| following <code class="docutils literal notranslate"><span class="pre">INTERFACE</span></code> are appended to the link interface and are not |
| used for linking <code class="docutils literal notranslate"><span class="pre"><target></span></code>.</p> |
| </div> |
| <div class="section" id="libraries-for-both-a-target-and-its-dependents"> |
| <h2><a class="toc-backref" href="#id5">Libraries for both a Target and its Dependents</a><a class="headerlink" href="#libraries-for-both-a-target-and-its-dependents" title="Permalink to this headline">¶</a></h2> |
| <div class="highlight-cmake notranslate"><div class="highlight"><pre><span></span><span class="nf">target_link_libraries(</span><span class="nv"><target></span><span class="w"> </span><span class="nv"><item>...</span><span class="nf">)</span><span class="w"></span> |
| </pre></div> |
| </div> |
| <p>Library dependencies are transitive by default with this signature. |
| When this target is linked into another target then the libraries |
| linked to this target will appear on the link line for the other |
| target too. This transitive "link interface" is stored in the |
| <span class="target" id="index-0-prop_tgt:INTERFACE_LINK_LIBRARIES"></span><a class="reference internal" href="../prop_tgt/INTERFACE_LINK_LIBRARIES.html#prop_tgt:INTERFACE_LINK_LIBRARIES" title="INTERFACE_LINK_LIBRARIES"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">INTERFACE_LINK_LIBRARIES</span></code></a> target property and may be overridden |
| by setting the property directly. When <span class="target" id="index-0-policy:CMP0022"></span><a class="reference internal" href="../policy/CMP0022.html#policy:CMP0022" title="CMP0022"><code class="xref cmake cmake-policy docutils literal notranslate"><span class="pre">CMP0022</span></code></a> is not set to |
| <code class="docutils literal notranslate"><span class="pre">NEW</span></code>, transitive linking is built in but may be overridden by the |
| <span class="target" id="index-0-prop_tgt:LINK_INTERFACE_LIBRARIES"></span><a class="reference internal" href="../prop_tgt/LINK_INTERFACE_LIBRARIES.html#prop_tgt:LINK_INTERFACE_LIBRARIES" title="LINK_INTERFACE_LIBRARIES"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">LINK_INTERFACE_LIBRARIES</span></code></a> property. Calls to other signatures |
| of this command may set the property making any libraries linked |
| exclusively by this signature private.</p> |
| </div> |
| <div class="section" id="libraries-for-a-target-and-or-its-dependents-legacy"> |
| <h2><a class="toc-backref" href="#id6">Libraries for a Target and/or its Dependents (Legacy)</a><a class="headerlink" href="#libraries-for-a-target-and-or-its-dependents-legacy" title="Permalink to this headline">¶</a></h2> |
| <div class="highlight-cmake notranslate"><div class="highlight"><pre><span></span><span class="nf">target_link_libraries(</span><span class="nv"><target></span><span class="w"></span> |
| <span class="w"> </span><span class="o"><</span><span class="no">LINK_PRIVATE</span><span class="p">|</span><span class="no">LINK_PUBLIC</span><span class="o">></span><span class="w"> </span><span class="nv"><lib>...</span><span class="w"></span> |
| <span class="w"> </span><span class="p">[</span><span class="o"><</span><span class="no">LINK_PRIVATE</span><span class="p">|</span><span class="no">LINK_PUBLIC</span><span class="o">></span><span class="w"> </span><span class="nv"><lib>...</span><span class="p">]...</span><span class="nf">)</span><span class="w"></span> |
| </pre></div> |
| </div> |
| <p>The <code class="docutils literal notranslate"><span class="pre">LINK_PUBLIC</span></code> and <code class="docutils literal notranslate"><span class="pre">LINK_PRIVATE</span></code> modes can be used to specify both |
| the link dependencies and the link interface in one command.</p> |
| <p>This signature is for compatibility only. Prefer the <code class="docutils literal notranslate"><span class="pre">PUBLIC</span></code> or |
| <code class="docutils literal notranslate"><span class="pre">PRIVATE</span></code> keywords instead.</p> |
| <p>Libraries and targets following <code class="docutils literal notranslate"><span class="pre">LINK_PUBLIC</span></code> are linked to, and are |
| made part of the <span class="target" id="index-1-prop_tgt:INTERFACE_LINK_LIBRARIES"></span><a class="reference internal" href="../prop_tgt/INTERFACE_LINK_LIBRARIES.html#prop_tgt:INTERFACE_LINK_LIBRARIES" title="INTERFACE_LINK_LIBRARIES"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">INTERFACE_LINK_LIBRARIES</span></code></a>. If policy |
| <span class="target" id="index-1-policy:CMP0022"></span><a class="reference internal" href="../policy/CMP0022.html#policy:CMP0022" title="CMP0022"><code class="xref cmake cmake-policy docutils literal notranslate"><span class="pre">CMP0022</span></code></a> is not <code class="docutils literal notranslate"><span class="pre">NEW</span></code>, they are also made part of the |
| <span class="target" id="index-1-prop_tgt:LINK_INTERFACE_LIBRARIES"></span><a class="reference internal" href="../prop_tgt/LINK_INTERFACE_LIBRARIES.html#prop_tgt:LINK_INTERFACE_LIBRARIES" title="LINK_INTERFACE_LIBRARIES"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">LINK_INTERFACE_LIBRARIES</span></code></a>. Libraries and targets following |
| <code class="docutils literal notranslate"><span class="pre">LINK_PRIVATE</span></code> are linked to, but are not made part of the |
| <span class="target" id="index-2-prop_tgt:INTERFACE_LINK_LIBRARIES"></span><a class="reference internal" href="../prop_tgt/INTERFACE_LINK_LIBRARIES.html#prop_tgt:INTERFACE_LINK_LIBRARIES" title="INTERFACE_LINK_LIBRARIES"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">INTERFACE_LINK_LIBRARIES</span></code></a> (or <span class="target" id="index-2-prop_tgt:LINK_INTERFACE_LIBRARIES"></span><a class="reference internal" href="../prop_tgt/LINK_INTERFACE_LIBRARIES.html#prop_tgt:LINK_INTERFACE_LIBRARIES" title="LINK_INTERFACE_LIBRARIES"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">LINK_INTERFACE_LIBRARIES</span></code></a>).</p> |
| </div> |
| <div class="section" id="libraries-for-dependents-only-legacy"> |
| <h2><a class="toc-backref" href="#id7">Libraries for Dependents Only (Legacy)</a><a class="headerlink" href="#libraries-for-dependents-only-legacy" title="Permalink to this headline">¶</a></h2> |
| <div class="highlight-cmake notranslate"><div class="highlight"><pre><span></span><span class="nf">target_link_libraries(</span><span class="nv"><target></span><span class="w"> </span><span class="no">LINK_INTERFACE_LIBRARIES</span><span class="w"> </span><span class="nv"><item>...</span><span class="nf">)</span><span class="w"></span> |
| </pre></div> |
| </div> |
| <p>The <code class="docutils literal notranslate"><span class="pre">LINK_INTERFACE_LIBRARIES</span></code> mode appends the libraries to the |
| <span class="target" id="index-3-prop_tgt:INTERFACE_LINK_LIBRARIES"></span><a class="reference internal" href="../prop_tgt/INTERFACE_LINK_LIBRARIES.html#prop_tgt:INTERFACE_LINK_LIBRARIES" title="INTERFACE_LINK_LIBRARIES"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">INTERFACE_LINK_LIBRARIES</span></code></a> target property instead of using them |
| for linking. If policy <span class="target" id="index-2-policy:CMP0022"></span><a class="reference internal" href="../policy/CMP0022.html#policy:CMP0022" title="CMP0022"><code class="xref cmake cmake-policy docutils literal notranslate"><span class="pre">CMP0022</span></code></a> is not <code class="docutils literal notranslate"><span class="pre">NEW</span></code>, then this mode |
| also appends libraries to the <span class="target" id="index-3-prop_tgt:LINK_INTERFACE_LIBRARIES"></span><a class="reference internal" href="../prop_tgt/LINK_INTERFACE_LIBRARIES.html#prop_tgt:LINK_INTERFACE_LIBRARIES" title="LINK_INTERFACE_LIBRARIES"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">LINK_INTERFACE_LIBRARIES</span></code></a> and its |
| per-configuration equivalent.</p> |
| <p>This signature is for compatibility only. Prefer the <code class="docutils literal notranslate"><span class="pre">INTERFACE</span></code> mode |
| instead.</p> |
| <p>Libraries specified as <code class="docutils literal notranslate"><span class="pre">debug</span></code> are wrapped in a generator expression to |
| correspond to debug builds. If policy <span class="target" id="index-3-policy:CMP0022"></span><a class="reference internal" href="../policy/CMP0022.html#policy:CMP0022" title="CMP0022"><code class="xref cmake cmake-policy docutils literal notranslate"><span class="pre">CMP0022</span></code></a> is |
| not <code class="docutils literal notranslate"><span class="pre">NEW</span></code>, the libraries are also appended to the |
| <span class="target" id="index-0-prop_tgt:LINK_INTERFACE_LIBRARIES_<CONFIG>"></span><a class="reference internal" href="../prop_tgt/LINK_INTERFACE_LIBRARIES_CONFIG.html#prop_tgt:LINK_INTERFACE_LIBRARIES_<CONFIG>" title="LINK_INTERFACE_LIBRARIES_<CONFIG>"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">LINK_INTERFACE_LIBRARIES_DEBUG</span></code></a> |
| property (or to the properties corresponding to configurations listed in |
| the <span class="target" id="index-1-prop_gbl:DEBUG_CONFIGURATIONS"></span><a class="reference internal" href="../prop_gbl/DEBUG_CONFIGURATIONS.html#prop_gbl:DEBUG_CONFIGURATIONS" title="DEBUG_CONFIGURATIONS"><code class="xref cmake cmake-prop_gbl docutils literal notranslate"><span class="pre">DEBUG_CONFIGURATIONS</span></code></a> global property if it is set). |
| Libraries specified as <code class="docutils literal notranslate"><span class="pre">optimized</span></code> are appended to the |
| <span class="target" id="index-4-prop_tgt:INTERFACE_LINK_LIBRARIES"></span><a class="reference internal" href="../prop_tgt/INTERFACE_LINK_LIBRARIES.html#prop_tgt:INTERFACE_LINK_LIBRARIES" title="INTERFACE_LINK_LIBRARIES"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">INTERFACE_LINK_LIBRARIES</span></code></a> property. If policy <span class="target" id="index-4-policy:CMP0022"></span><a class="reference internal" href="../policy/CMP0022.html#policy:CMP0022" title="CMP0022"><code class="xref cmake cmake-policy docutils literal notranslate"><span class="pre">CMP0022</span></code></a> |
| is not <code class="docutils literal notranslate"><span class="pre">NEW</span></code>, they are also appended to the |
| <span class="target" id="index-4-prop_tgt:LINK_INTERFACE_LIBRARIES"></span><a class="reference internal" href="../prop_tgt/LINK_INTERFACE_LIBRARIES.html#prop_tgt:LINK_INTERFACE_LIBRARIES" title="LINK_INTERFACE_LIBRARIES"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">LINK_INTERFACE_LIBRARIES</span></code></a> property. Libraries specified as |
| <code class="docutils literal notranslate"><span class="pre">general</span></code> (or without any keyword) are treated as if specified for both |
| <code class="docutils literal notranslate"><span class="pre">debug</span></code> and <code class="docutils literal notranslate"><span class="pre">optimized</span></code>.</p> |
| </div> |
| <div class="section" id="linking-object-libraries"> |
| <h2><a class="toc-backref" href="#id8">Linking Object Libraries</a><a class="headerlink" href="#linking-object-libraries" title="Permalink to this headline">¶</a></h2> |
| <div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.12.</span></p> |
| </div> |
| <p><a class="reference internal" href="../manual/cmake-buildsystem.7.html#object-libraries"><span class="std std-ref">Object Libraries</span></a> may be used as the <code class="docutils literal notranslate"><span class="pre"><target></span></code> (first) argument |
| of <code class="docutils literal notranslate"><span class="pre">target_link_libraries</span></code> to specify dependencies of their sources |
| on other libraries. For example, the code</p> |
| <div class="highlight-cmake notranslate"><div class="highlight"><pre><span></span><span class="nf">add_library(</span><span class="no">A</span><span class="w"> </span><span class="no">SHARED</span><span class="w"> </span><span class="nb">a.c</span><span class="nf">)</span><span class="w"></span> |
| <span class="nf">target_compile_definitions(</span><span class="no">A</span><span class="w"> </span><span class="no">PUBLIC</span><span class="w"> </span><span class="no">A</span><span class="nf">)</span><span class="w"></span> |
| |
| <span class="nf">add_library(</span><span class="nb">obj</span><span class="w"> </span><span class="no">OBJECT</span><span class="w"> </span><span class="nb">obj.c</span><span class="nf">)</span><span class="w"></span> |
| <span class="nf">target_compile_definitions(</span><span class="nb">obj</span><span class="w"> </span><span class="no">PUBLIC</span><span class="w"> </span><span class="no">OBJ</span><span class="nf">)</span><span class="w"></span> |
| <span class="nf">target_link_libraries(</span><span class="nb">obj</span><span class="w"> </span><span class="no">PUBLIC</span><span class="w"> </span><span class="no">A</span><span class="nf">)</span><span class="w"></span> |
| </pre></div> |
| </div> |
| <p>compiles <code class="docutils literal notranslate"><span class="pre">obj.c</span></code> with <code class="docutils literal notranslate"><span class="pre">-DA</span> <span class="pre">-DOBJ</span></code> and establishes usage requirements |
| for <code class="docutils literal notranslate"><span class="pre">obj</span></code> that propagate to its dependents.</p> |
| <p>Normal libraries and executables may link to <a class="reference internal" href="../manual/cmake-buildsystem.7.html#object-libraries"><span class="std std-ref">Object Libraries</span></a> |
| to get their objects and usage requirements. Continuing the above |
| example, the code</p> |
| <div class="highlight-cmake notranslate"><div class="highlight"><pre><span></span><span class="nf">add_library(</span><span class="no">B</span><span class="w"> </span><span class="no">SHARED</span><span class="w"> </span><span class="nb">b.c</span><span class="nf">)</span><span class="w"></span> |
| <span class="nf">target_link_libraries(</span><span class="no">B</span><span class="w"> </span><span class="no">PUBLIC</span><span class="w"> </span><span class="nb">obj</span><span class="nf">)</span><span class="w"></span> |
| </pre></div> |
| </div> |
| <p>compiles <code class="docutils literal notranslate"><span class="pre">b.c</span></code> with <code class="docutils literal notranslate"><span class="pre">-DA</span> <span class="pre">-DOBJ</span></code>, creates shared library <code class="docutils literal notranslate"><span class="pre">B</span></code> |
| with object files from <code class="docutils literal notranslate"><span class="pre">b.c</span></code> and <code class="docutils literal notranslate"><span class="pre">obj.c</span></code>, and links <code class="docutils literal notranslate"><span class="pre">B</span></code> to <code class="docutils literal notranslate"><span class="pre">A</span></code>. |
| Furthermore, the code</p> |
| <div class="highlight-cmake notranslate"><div class="highlight"><pre><span></span><span class="nf">add_executable(</span><span class="nb">main</span><span class="w"> </span><span class="nb">main.c</span><span class="nf">)</span><span class="w"></span> |
| <span class="nf">target_link_libraries(</span><span class="nb">main</span><span class="w"> </span><span class="no">B</span><span class="nf">)</span><span class="w"></span> |
| </pre></div> |
| </div> |
| <p>compiles <code class="docutils literal notranslate"><span class="pre">main.c</span></code> with <code class="docutils literal notranslate"><span class="pre">-DA</span> <span class="pre">-DOBJ</span></code> and links executable <code class="docutils literal notranslate"><span class="pre">main</span></code> |
| to <code class="docutils literal notranslate"><span class="pre">B</span></code> and <code class="docutils literal notranslate"><span class="pre">A</span></code>. The object library's usage requirements are |
| propagated transitively through <code class="docutils literal notranslate"><span class="pre">B</span></code>, but its object files are not.</p> |
| <p><a class="reference internal" href="../manual/cmake-buildsystem.7.html#object-libraries"><span class="std std-ref">Object Libraries</span></a> may "link" to other object libraries to get |
| usage requirements, but since they do not have a link step nothing |
| is done with their object files. Continuing from the above example, |
| the code:</p> |
| <div class="highlight-cmake notranslate"><div class="highlight"><pre><span></span><span class="nf">add_library(</span><span class="nb">obj2</span><span class="w"> </span><span class="no">OBJECT</span><span class="w"> </span><span class="nb">obj2.c</span><span class="nf">)</span><span class="w"></span> |
| <span class="nf">target_link_libraries(</span><span class="nb">obj2</span><span class="w"> </span><span class="no">PUBLIC</span><span class="w"> </span><span class="nb">obj</span><span class="nf">)</span><span class="w"></span> |
| |
| <span class="nf">add_executable(</span><span class="nb">main2</span><span class="w"> </span><span class="nb">main2.c</span><span class="nf">)</span><span class="w"></span> |
| <span class="nf">target_link_libraries(</span><span class="nb">main2</span><span class="w"> </span><span class="nb">obj2</span><span class="nf">)</span><span class="w"></span> |
| </pre></div> |
| </div> |
| <p>compiles <code class="docutils literal notranslate"><span class="pre">obj2.c</span></code> with <code class="docutils literal notranslate"><span class="pre">-DA</span> <span class="pre">-DOBJ</span></code>, creates executable <code class="docutils literal notranslate"><span class="pre">main2</span></code> |
| with object files from <code class="docutils literal notranslate"><span class="pre">main2.c</span></code> and <code class="docutils literal notranslate"><span class="pre">obj2.c</span></code>, and links <code class="docutils literal notranslate"><span class="pre">main2</span></code> |
| to <code class="docutils literal notranslate"><span class="pre">A</span></code>.</p> |
| <p>In other words, when <a class="reference internal" href="../manual/cmake-buildsystem.7.html#object-libraries"><span class="std std-ref">Object Libraries</span></a> appear in a target's |
| <span class="target" id="index-5-prop_tgt:INTERFACE_LINK_LIBRARIES"></span><a class="reference internal" href="../prop_tgt/INTERFACE_LINK_LIBRARIES.html#prop_tgt:INTERFACE_LINK_LIBRARIES" title="INTERFACE_LINK_LIBRARIES"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">INTERFACE_LINK_LIBRARIES</span></code></a> property they will be |
| treated as <a class="reference internal" href="../manual/cmake-buildsystem.7.html#interface-libraries"><span class="std std-ref">Interface Libraries</span></a>, but when they appear in |
| a target's <span class="target" id="index-0-prop_tgt:LINK_LIBRARIES"></span><a class="reference internal" href="../prop_tgt/LINK_LIBRARIES.html#prop_tgt:LINK_LIBRARIES" title="LINK_LIBRARIES"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">LINK_LIBRARIES</span></code></a> property their object files |
| will be included in the link too.</p> |
| <div class="section" id="linking-object-libraries-via-target-objects"> |
| <span id="id1"></span><h3><a class="toc-backref" href="#id9">Linking Object Libraries via $<TARGET_OBJECTS></a><a class="headerlink" href="#linking-object-libraries-via-target-objects" title="Permalink to this headline">¶</a></h3> |
| <div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.21.</span></p> |
| </div> |
| <p>The object files associated with an object library may be referenced |
| by the <span class="target" id="index-0-genex:TARGET_OBJECTS"></span><a class="reference internal" href="../manual/cmake-generator-expressions.7.html#genex:TARGET_OBJECTS" title="TARGET_OBJECTS"><code class="xref cmake cmake-genex docutils literal notranslate"><span class="pre">$<TARGET_OBJECTS></span></code></a> generator expression. Such object |
| files are placed on the link line <em>before</em> all libraries, regardless |
| of their relative order. Additionally, an ordering dependency will be |
| added to the build system to make sure the object library is up-to-date |
| before the dependent target links. For example, the code</p> |
| <div class="highlight-cmake notranslate"><div class="highlight"><pre><span></span><span class="nf">add_library(</span><span class="nb">obj3</span><span class="w"> </span><span class="no">OBJECT</span><span class="w"> </span><span class="nb">obj3.c</span><span class="nf">)</span><span class="w"></span> |
| <span class="nf">target_compile_definitions(</span><span class="nb">obj3</span><span class="w"> </span><span class="no">PUBLIC</span><span class="w"> </span><span class="no">OBJ3</span><span class="nf">)</span><span class="w"></span> |
| |
| <span class="nf">add_executable(</span><span class="nb">main3</span><span class="w"> </span><span class="nb">main3.c</span><span class="nf">)</span><span class="w"></span> |
| <span class="nf">target_link_libraries(</span><span class="nb">main3</span><span class="w"> </span><span class="no">PRIVATE</span><span class="w"> </span><span class="nb">a3</span><span class="w"> </span><span class="o">$<</span><span class="no">TARGET_OBJECTS</span><span class="o">:</span><span class="nb">obj3</span><span class="o">></span><span class="w"> </span><span class="nb">b3</span><span class="nf">)</span><span class="w"></span> |
| </pre></div> |
| </div> |
| <p>links executable <code class="docutils literal notranslate"><span class="pre">main3</span></code> with object files from <code class="docutils literal notranslate"><span class="pre">main3.c</span></code> |
| and <code class="docutils literal notranslate"><span class="pre">obj3.c</span></code> followed by the <code class="docutils literal notranslate"><span class="pre">a3</span></code> and <code class="docutils literal notranslate"><span class="pre">b3</span></code> libraries. |
| <code class="docutils literal notranslate"><span class="pre">main3.c</span></code> is <em>not</em> compiled with usage requirements from <code class="docutils literal notranslate"><span class="pre">obj3</span></code>, |
| such as <code class="docutils literal notranslate"><span class="pre">-DOBJ3</span></code>.</p> |
| <p>This approach can be used to achieve transitive inclusion of object |
| files in link lines as usage requirements. Continuing the above |
| example, the code</p> |
| <div class="highlight-cmake notranslate"><div class="highlight"><pre><span></span><span class="nf">add_library(</span><span class="nb">iface_obj3</span><span class="w"> </span><span class="no">INTERFACE</span><span class="nf">)</span><span class="w"></span> |
| <span class="nf">target_link_libraries(</span><span class="nb">iface_obj3</span><span class="w"> </span><span class="no">INTERFACE</span><span class="w"> </span><span class="nb">obj3</span><span class="w"> </span><span class="o">$<</span><span class="no">TARGET_OBJECTS</span><span class="o">:</span><span class="nb">obj3</span><span class="o">></span><span class="nf">)</span><span class="w"></span> |
| </pre></div> |
| </div> |
| <p>creates an interface library <code class="docutils literal notranslate"><span class="pre">iface_obj3</span></code> that forwards the <code class="docutils literal notranslate"><span class="pre">obj3</span></code> |
| usage requirements and adds the <code class="docutils literal notranslate"><span class="pre">obj3</span></code> object files to dependents' |
| link lines. The code</p> |
| <div class="highlight-cmake notranslate"><div class="highlight"><pre><span></span><span class="nf">add_executable(</span><span class="nb">use_obj3</span><span class="w"> </span><span class="nb">use_obj3.c</span><span class="nf">)</span><span class="w"></span> |
| <span class="nf">target_link_libraries(</span><span class="nb">use_obj3</span><span class="w"> </span><span class="no">PRIVATE</span><span class="w"> </span><span class="nb">iface_obj3</span><span class="nf">)</span><span class="w"></span> |
| </pre></div> |
| </div> |
| <p>compiles <code class="docutils literal notranslate"><span class="pre">use_obj3.c</span></code> with <code class="docutils literal notranslate"><span class="pre">-DOBJ3</span></code> and links executable <code class="docutils literal notranslate"><span class="pre">use_obj3</span></code> |
| with object files from <code class="docutils literal notranslate"><span class="pre">use_obj3.c</span></code> and <code class="docutils literal notranslate"><span class="pre">obj3.c</span></code>.</p> |
| <p>This also works transitively through a static library. Since a static |
| library does not link, it does not consume the object files from |
| object libraries referenced this way. Instead, the object files |
| become transitive link dependencies of the static library. |
| Continuing the above example, the code</p> |
| <div class="highlight-cmake notranslate"><div class="highlight"><pre><span></span><span class="nf">add_library(</span><span class="nb">static3</span><span class="w"> </span><span class="no">STATIC</span><span class="w"> </span><span class="nb">static3.c</span><span class="nf">)</span><span class="w"></span> |
| <span class="nf">target_link_libraries(</span><span class="nb">static3</span><span class="w"> </span><span class="no">PRIVATE</span><span class="w"> </span><span class="nb">iface_obj3</span><span class="nf">)</span><span class="w"></span> |
| |
| <span class="nf">add_executable(</span><span class="nb">use_static3</span><span class="w"> </span><span class="nb">use_static3.c</span><span class="nf">)</span><span class="w"></span> |
| <span class="nf">target_link_libraries(</span><span class="nb">use_static3</span><span class="w"> </span><span class="no">PRIVATE</span><span class="w"> </span><span class="nb">static3</span><span class="nf">)</span><span class="w"></span> |
| </pre></div> |
| </div> |
| <p>compiles <code class="docutils literal notranslate"><span class="pre">static3.c</span></code> with <code class="docutils literal notranslate"><span class="pre">-DOBJ3</span></code> and creates <code class="docutils literal notranslate"><span class="pre">libstatic3.a</span></code> |
| using only its own object file. <code class="docutils literal notranslate"><span class="pre">use_static3.c</span></code> is compiled <em>without</em> |
| <code class="docutils literal notranslate"><span class="pre">-DOBJ3</span></code> because the usage requirement is not transitive through |
| the private dependency of <code class="docutils literal notranslate"><span class="pre">static3</span></code>. However, the link dependencies |
| of <code class="docutils literal notranslate"><span class="pre">static3</span></code> are propagated, including the <code class="docutils literal notranslate"><span class="pre">iface_obj3</span></code> reference |
| to <code class="docutils literal notranslate"><span class="pre">$<TARGET_OBJECTS:obj3></span></code>. The <code class="docutils literal notranslate"><span class="pre">use_static3</span></code> executable is |
| created with object files from <code class="docutils literal notranslate"><span class="pre">use_static3.c</span></code> and <code class="docutils literal notranslate"><span class="pre">obj3.c</span></code>, and |
| linked to library <code class="docutils literal notranslate"><span class="pre">libstatic3.a</span></code>.</p> |
| <p>When using this approach, it is the project's responsibility to avoid |
| linking multiple dependent binaries to <code class="docutils literal notranslate"><span class="pre">iface_obj3</span></code>, because they will |
| all get the <code class="docutils literal notranslate"><span class="pre">obj3</span></code> object files on their link lines.</p> |
| <div class="admonition note"> |
| <p class="admonition-title">Note</p> |
| <p>Referencing <span class="target" id="index-1-genex:TARGET_OBJECTS"></span><a class="reference internal" href="../manual/cmake-generator-expressions.7.html#genex:TARGET_OBJECTS" title="TARGET_OBJECTS"><code class="xref cmake cmake-genex docutils literal notranslate"><span class="pre">$<TARGET_OBJECTS></span></code></a> in <code class="docutils literal notranslate"><span class="pre">target_link_libraries</span></code> |
| calls worked in versions of CMake prior to 3.21 for some cases, |
| but was not fully supported:</p> |
| <ul class="simple"> |
| <li><p>It did not place the object files before libraries on link lines.</p></li> |
| <li><p>It did not add an ordering dependency on the object library.</p></li> |
| <li><p>It did not work in Xcode with multiple architectures.</p></li> |
| </ul> |
| </div> |
| </div> |
| </div> |
| <div class="section" id="cyclic-dependencies-of-static-libraries"> |
| <h2><a class="toc-backref" href="#id10">Cyclic Dependencies of Static Libraries</a><a class="headerlink" href="#cyclic-dependencies-of-static-libraries" title="Permalink to this headline">¶</a></h2> |
| <p>The library dependency graph is normally acyclic (a DAG), but in the case |
| of mutually-dependent <code class="docutils literal notranslate"><span class="pre">STATIC</span></code> libraries CMake allows the graph to |
| contain cycles (strongly connected components). When another target links |
| to one of the libraries, CMake repeats the entire connected component. |
| For example, the code</p> |
| <div class="highlight-cmake notranslate"><div class="highlight"><pre><span></span><span class="nf">add_library(</span><span class="no">A</span><span class="w"> </span><span class="no">STATIC</span><span class="w"> </span><span class="nb">a.c</span><span class="nf">)</span><span class="w"></span> |
| <span class="nf">add_library(</span><span class="no">B</span><span class="w"> </span><span class="no">STATIC</span><span class="w"> </span><span class="nb">b.c</span><span class="nf">)</span><span class="w"></span> |
| <span class="nf">target_link_libraries(</span><span class="no">A</span><span class="w"> </span><span class="no">B</span><span class="nf">)</span><span class="w"></span> |
| <span class="nf">target_link_libraries(</span><span class="no">B</span><span class="w"> </span><span class="no">A</span><span class="nf">)</span><span class="w"></span> |
| <span class="nf">add_executable(</span><span class="nb">main</span><span class="w"> </span><span class="nb">main.c</span><span class="nf">)</span><span class="w"></span> |
| <span class="nf">target_link_libraries(</span><span class="nb">main</span><span class="w"> </span><span class="no">A</span><span class="nf">)</span><span class="w"></span> |
| </pre></div> |
| </div> |
| <p>links <code class="docutils literal notranslate"><span class="pre">main</span></code> to <code class="docutils literal notranslate"><span class="pre">A</span> <span class="pre">B</span> <span class="pre">A</span> <span class="pre">B</span></code>. While one repetition is usually |
| sufficient, pathological object file and symbol arrangements can require |
| more. One may handle such cases by using the |
| <span class="target" id="index-0-prop_tgt:LINK_INTERFACE_MULTIPLICITY"></span><a class="reference internal" href="../prop_tgt/LINK_INTERFACE_MULTIPLICITY.html#prop_tgt:LINK_INTERFACE_MULTIPLICITY" title="LINK_INTERFACE_MULTIPLICITY"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">LINK_INTERFACE_MULTIPLICITY</span></code></a> target property or by manually |
| repeating the component in the last <code class="docutils literal notranslate"><span class="pre">target_link_libraries</span></code> call. |
| However, if two archives are really so interdependent they should probably |
| be combined into a single archive, perhaps by using <a class="reference internal" href="../manual/cmake-buildsystem.7.html#object-libraries"><span class="std std-ref">Object Libraries</span></a>.</p> |
| </div> |
| <div class="section" id="creating-relocatable-packages"> |
| <h2><a class="toc-backref" href="#id11">Creating Relocatable Packages</a><a class="headerlink" href="#creating-relocatable-packages" title="Permalink to this headline">¶</a></h2> |
| <p>Note that it is not advisable to populate the |
| <span class="target" id="index-7-prop_tgt:INTERFACE_LINK_LIBRARIES"></span><a class="reference internal" href="../prop_tgt/INTERFACE_LINK_LIBRARIES.html#prop_tgt:INTERFACE_LINK_LIBRARIES" title="INTERFACE_LINK_LIBRARIES"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">INTERFACE_LINK_LIBRARIES</span></code></a> of a target with absolute paths to dependencies. |
| That would hard-code into installed packages the library file paths |
| for dependencies <strong>as found on the machine the package was made on</strong>.</p> |
| <p>See the <a class="reference internal" href="../manual/cmake-packages.7.html#creating-relocatable-packages"><span class="std std-ref">Creating Relocatable Packages</span></a> section of the |
| <span class="target" id="index-0-manual:cmake-packages(7)"></span><a class="reference internal" href="../manual/cmake-packages.7.html#manual:cmake-packages(7)" title="cmake-packages(7)"><code class="xref cmake cmake-manual docutils literal notranslate"><span class="pre">cmake-packages(7)</span></code></a> manual for discussion of additional care |
| that must be taken when specifying usage requirements while creating |
| packages for redistribution.</p> |
| </div> |
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| <h3><a href="../index.html">Table of Contents</a></h3> |
| <ul> |
| <li><a class="reference internal" href="#">target_link_libraries</a><ul> |
| <li><a class="reference internal" href="#overview">Overview</a></li> |
| <li><a class="reference internal" href="#libraries-for-a-target-and-or-its-dependents">Libraries for a Target and/or its Dependents</a></li> |
| <li><a class="reference internal" href="#libraries-for-both-a-target-and-its-dependents">Libraries for both a Target and its Dependents</a></li> |
| <li><a class="reference internal" href="#libraries-for-a-target-and-or-its-dependents-legacy">Libraries for a Target and/or its Dependents (Legacy)</a></li> |
| <li><a class="reference internal" href="#libraries-for-dependents-only-legacy">Libraries for Dependents Only (Legacy)</a></li> |
| <li><a class="reference internal" href="#linking-object-libraries">Linking Object Libraries</a><ul> |
| <li><a class="reference internal" href="#linking-object-libraries-via-target-objects">Linking Object Libraries via $<TARGET_OBJECTS></a></li> |
| </ul> |
| </li> |
| <li><a class="reference internal" href="#cyclic-dependencies-of-static-libraries">Cyclic Dependencies of Static Libraries</a></li> |
| <li><a class="reference internal" href="#creating-relocatable-packages">Creating Relocatable Packages</a></li> |
| </ul> |
| </li> |
| </ul> |
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