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 <section id="cmake-3-21-release-notes">
<h1><a class="toc-backref" href="#id6" role="doc-backlink">CMake 3.21 Release Notes</a><a class="headerlink" href="#cmake-3-21-release-notes" title="Permalink to this heading">¶</a></h1>
<nav class="contents" id="contents">
Contents
<ul class="simple">
<li><a class="reference internal" href="#cmake-3-21-release-notes" id="id6">CMake 3.21 Release Notes</a>
<ul>
<li><a class="reference internal" href="#new-features" id="id7">New Features</a>
<ul>
<li><a class="reference internal" href="#presets" id="id8">Presets</a></li>
<li><a class="reference internal" href="#generators" id="id9">Generators</a></li>
<li><a class="reference internal" href="#languages" id="id10">Languages</a></li>
<li><a class="reference internal" href="#command-line" id="id11">Command-Line</a></li>
<li><a class="reference internal" href="#compilers" id="id12">Compilers</a></li>
<li><a class="reference internal" href="#platforms" id="id13">Platforms</a></li>
<li><a class="reference internal" href="#file-based-api" id="id14">File-Based API</a></li>
<li><a class="reference internal" href="#commands" id="id15">Commands</a></li>
<li><a class="reference internal" href="#variables" id="id16">Variables</a></li>
<li><a class="reference internal" href="#properties" id="id17">Properties</a></li>
<li><a class="reference internal" href="#modules" id="id18">Modules</a></li>
<li><a class="reference internal" href="#generator-expressions" id="id19">Generator Expressions</a></li>
<li><a class="reference internal" href="#ctest" id="id20">CTest</a></li>
<li><a class="reference internal" href="#cpack" id="id21">CPack</a></li>
</ul>
</li>
<li><a class="reference internal" href="#deprecated-and-removed-features" id="id22">Deprecated and Removed Features</a></li>
<li><a class="reference internal" href="#other-changes" id="id23">Other Changes</a></li>
<li><a class="reference internal" href="#updates" id="id24">Updates</a>
<ul>
<li><a class="reference internal" href="#id1" id="id25">3.21.1</a></li>
<li><a class="reference internal" href="#id2" id="id26">3.21.2</a></li>
<li><a class="reference internal" href="#id3" id="id27">3.21.3</a></li>
<li><a class="reference internal" href="#id4" id="id28">3.21.4</a></li>
<li><a class="reference internal" href="#id5" id="id29">3.21.5, 3.21.6, 3.21.7</a></li>
</ul>
</li>
</ul>
</li>
</ul>
</nav>
Changes made since CMake 3.20 include the following.
<section id="new-features">
<h2><a class="toc-backref" href="#id7" role="doc-backlink">New Features</a><a class="headerlink" href="#new-features" title="Permalink to this heading">¶</a></h2>
<section id="presets">
<h3><a class="toc-backref" href="#id8" role="doc-backlink">Presets</a><a class="headerlink" href="#presets" title="Permalink to this heading">¶</a></h3>
<ul class="simple">
<li><a class="reference internal" href="../manual/cmake-presets.7.html#manual:cmake-presets(7)" title="cmake-presets(7)"><code class="xref cmake cmake-manual docutils literal notranslate">cmake-presets(7)</code></a> gained support for specifying the install prefix
in a configure preset.</li>
<li><a class="reference internal" href="../manual/cmake-presets.7.html#manual:cmake-presets(7)" title="cmake-presets(7)"><code class="xref cmake cmake-manual docutils literal notranslate">cmake-presets(7)</code></a> gained support for conditional enabling of presets.</li>
<li><a class="reference internal" href="../manual/cmake-presets.7.html#manual:cmake-presets(7)" title="cmake-presets(7)"><code class="xref cmake cmake-manual docutils literal notranslate">cmake-presets(7)</code></a> gained support for a <code class="docutils literal notranslate">${hostSystemName}</code> macro.</li>
<li><a class="reference internal" href="../manual/cmake-presets.7.html#manual:cmake-presets(7)" title="cmake-presets(7)"><code class="xref cmake cmake-manual docutils literal notranslate">cmake-presets(7)</code></a> gained support for omitting the <code class="docutils literal notranslate">generator</code> and
<code class="docutils literal notranslate">binaryDir</code> fields.</li>
</ul>
</section>
<section id="generators">
<h3><a class="toc-backref" href="#id9" role="doc-backlink">Generators</a><a class="headerlink" href="#generators" title="Permalink to this heading">¶</a></h3>
<ul class="simple">
<li>The <a class="reference internal" href="../generator/Visual%20Studio%2017%202022.html#generator:Visual Studio 17 2022" title="Visual Studio 17 2022"><code class="xref cmake cmake-generator docutils literal notranslate">Visual Studio 17 2022</code></a> generator was added.</li>
<li>The <a class="reference internal" href="../manual/cmake-generators.7.html#makefile-generators">Makefile Generators</a> and the <a class="reference internal" href="../generator/Ninja.html#generator:Ninja" title="Ninja"><code class="xref cmake cmake-generator docutils literal notranslate">Ninja</code></a> generator
learned to add linker launcher tools along with the linker for <code class="docutils literal notranslate">C</code>,
<code class="docutils literal notranslate">CXX</code>, <code class="docutils literal notranslate">OBJC</code>, and <code class="docutils literal notranslate">OBJCXX</code> languages.
See the <a class="reference internal" href="../variable/CMAKE_LANG_LINKER_LAUNCHER.html#variable:CMAKE_&lt;LANG&gt;_LINKER_LAUNCHER" title="CMAKE_&lt;LANG&gt;_LINKER_LAUNCHER"><code class="xref cmake cmake-variable docutils literal notranslate">CMAKE_&lt;LANG&gt;_LINKER_LAUNCHER</code></a> variable
and <a class="reference internal" href="../prop_tgt/LANG_LINKER_LAUNCHER.html#prop_tgt:&lt;LANG&gt;_LINKER_LAUNCHER" title="&lt;LANG&gt;_LINKER_LAUNCHER"><code class="xref cmake cmake-prop_tgt docutils literal notranslate">&lt;LANG&gt;_LINKER_LAUNCHER</code></a> target property for details.</li>
</ul>
</section>
<section id="languages">
<h3><a class="toc-backref" href="#id10" role="doc-backlink">Languages</a><a class="headerlink" href="#languages" title="Permalink to this heading">¶</a></h3>
<ul class="simple">
<li>CMake learned to support <code class="docutils literal notranslate">HIP</code> as a first-class language that can be
enabled via the <a class="reference internal" href="../command/project.html#command:project" title="project"><code class="xref cmake cmake-command docutils literal notranslate">project()</code></a> and <a class="reference internal" href="../command/enable_language.html#command:enable_language" title="enable_language"><code class="xref cmake cmake-command docutils literal notranslate">enable_language()</code></a> commands.</li>
<li><a class="reference internal" href="../prop_tgt/C_STANDARD.html#prop_tgt:C_STANDARD" title="C_STANDARD"><code class="xref cmake cmake-prop_tgt docutils literal notranslate">C_STANDARD</code></a>, <a class="reference internal" href="../prop_tgt/OBJC_STANDARD.html#prop_tgt:OBJC_STANDARD" title="OBJC_STANDARD"><code class="xref cmake cmake-prop_tgt docutils literal notranslate">OBJC_STANDARD</code></a>, and the
<a class="reference internal" href="../manual/cmake-compile-features.7.html#manual:cmake-compile-features(7)" title="cmake-compile-features(7)"><code class="xref cmake cmake-manual docutils literal notranslate">Compile Features</code></a> functionality gained
support for C17 and C23.</li>
<li>Source file extensions <code class="docutils literal notranslate">.ixx</code> and <code class="docutils literal notranslate">.cppm</code> are now treated as C++.</li>
</ul>
</section>
<section id="command-line">
<h3><a class="toc-backref" href="#id11" role="doc-backlink">Command-Line</a><a class="headerlink" href="#command-line" title="Permalink to this heading">¶</a></h3>
<ul class="simple">
<li><a class="reference internal" href="../manual/cmake.1.html#manual:cmake(1)" title="cmake(1)"><code class="xref cmake cmake-manual docutils literal notranslate">cmake(1)</code></a> gained the <a class="reference internal" href="../manual/cmake.1.html#cmdoption-cmake-install-prefix"><code class="xref std std-option docutils literal notranslate">--install-prefix</code></a>
command-line option to specify the location of the install prefix.</li>
<li><a class="reference internal" href="../manual/cmake.1.html#manual:cmake(1)" title="cmake(1)"><code class="xref cmake cmake-manual docutils literal notranslate">cmake(1)</code></a> gained the <a class="reference internal" href="../manual/cmake.1.html#cmdoption-cmake-toolchain"><code class="xref std std-option docutils literal notranslate">--toolchain</code></a>
command-line option to specify a toolchain file.</li>
<li><a class="reference internal" href="../manual/cmake.1.html#manual:cmake(1)" title="cmake(1)"><code class="xref cmake cmake-manual docutils literal notranslate">cmake(1)</code></a> <a class="reference internal" href="../manual/cmake.1.html#cmdoption-cmake-E-arg-capabilities"><code class="xref std std-option docutils literal notranslate">-E capabilities</code></a> output,
for some generators, may now contain a <code class="docutils literal notranslate">supportedPlatforms</code> field listing
platforms known to be supported in <a class="reference internal" href="../variable/CMAKE_GENERATOR_PLATFORM.html#variable:CMAKE_GENERATOR_PLATFORM" title="CMAKE_GENERATOR_PLATFORM"><code class="xref cmake cmake-variable docutils literal notranslate">CMAKE_GENERATOR_PLATFORM</code></a>.</li>
<li>Messages printed to a terminal now may be colored by message type.</li>
</ul>
</section>
<section id="compilers">
<h3><a class="toc-backref" href="#id12" role="doc-backlink">Compilers</a><a class="headerlink" href="#compilers" title="Permalink to this heading">¶</a></h3>
<ul class="simple">
<li>The Fujitsu compiler is now supported using compiler id <code class="docutils literal notranslate">Fujitsu</code>
in traditional (<code class="docutils literal notranslate">Trad</code>) mode, and compiler id <code class="docutils literal notranslate">FujitsuClang</code>
in <code class="docutils literal notranslate">Clang</code> mode.</li>
</ul>
</section>
<section id="platforms">
<h3><a class="toc-backref" href="#id13" role="doc-backlink">Platforms</a><a class="headerlink" href="#platforms" title="Permalink to this heading">¶</a></h3>
<ul class="simple">
<li>CMake now supports the MSYS runtime environment, much like CYGWIN.</li>
</ul>
</section>
<section id="file-based-api">
<h3><a class="toc-backref" href="#id14" role="doc-backlink">File-Based API</a><a class="headerlink" href="#file-based-api" title="Permalink to this heading">¶</a></h3>
<ul class="simple">
<li>The <a class="reference internal" href="../manual/cmake-file-api.7.html#manual:cmake-file-api(7)" title="cmake-file-api(7)"><code class="xref cmake cmake-manual docutils literal notranslate">cmake-file-api(7)</code></a> &quot;codemodel&quot; version 2 <code class="docutils literal notranslate">version</code> field
has been updated to 2.3.</li>
<li>The <a class="reference internal" href="../manual/cmake-file-api.7.html#manual:cmake-file-api(7)" title="cmake-file-api(7)"><code class="xref cmake cmake-manual docutils literal notranslate">cmake-file-api(7)</code></a> &quot;codemodel&quot; version 2 gained a
new &quot;directory&quot; object containing directory-level information.
This includes a list of installers generated by the <a class="reference internal" href="../command/install.html#command:install" title="install"><code class="xref cmake cmake-command docutils literal notranslate">install()</code></a>
command.</li>
</ul>
</section>
<section id="commands">
<h3><a class="toc-backref" href="#id15" role="doc-backlink">Commands</a><a class="headerlink" href="#commands" title="Permalink to this heading">¶</a></h3>
<ul class="simple">
<li>The <a class="reference internal" href="../command/add_custom_command.html#command:add_custom_command" title="add_custom_command"><code class="xref cmake cmake-command docutils literal notranslate">add_custom_command()</code></a> command <code class="docutils literal notranslate">DEPFILE</code> option:
<ul>
<li>may now use
<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">generator expressions</code></a>,</li>
<li>is now supported by <a class="reference internal" href="../manual/cmake-generators.7.html#visual-studio-generators">Visual Studio Generators</a> for VS 2012
and above, and</li>
<li>is now supported by the <a class="reference internal" href="../generator/Xcode.html#generator:Xcode" title="Xcode"><code class="xref cmake cmake-generator docutils literal notranslate">Xcode</code></a> generator.</li>
</ul>
</li>
<li>The <a class="reference internal" href="../command/add_custom_command.html#command:add_custom_command" title="add_custom_command"><code class="xref cmake cmake-command docutils literal notranslate">add_custom_command(TARGET)</code></a> command
(for <a class="reference internal" href="../command/add_custom_command.html#add-custom-command-target">Build Events</a>)
gained support for resolving target-dependent generator expressions.</li>
<li>The <a class="reference internal" href="../command/build_command.html#command:build_command" title="build_command"><code class="xref cmake cmake-command docutils literal notranslate">build_command()</code></a> command gained a <code class="docutils literal notranslate">PARALLEL_LEVEL</code> option.</li>
<li>The <a class="reference internal" href="../command/file.html#command:file" title="file"><code class="xref cmake cmake-command docutils literal notranslate">file(COPY_FILE)</code></a> command was added to copy a single file.</li>
<li>The <a class="reference internal" href="../command/file.html#command:file" title="file"><code class="xref cmake cmake-command docutils literal notranslate">file(GET_RUNTIME_DEPENDENCIES)</code></a> command gained new
<code class="docutils literal notranslate">POST_INCLUDE_FILES</code> and <code class="docutils literal notranslate">POST_EXCLUDE_FILES</code> arguments.</li>
<li>The <a class="reference internal" href="../command/file.html#command:file" title="file"><code class="xref cmake cmake-command docutils literal notranslate">file(REAL_PATH)</code></a> command gained the option <code class="docutils literal notranslate">EXPAND_TILDE</code> to
replace any leading tilde with the path to the user's home directory.</li>
<li>The <a class="reference internal" href="../command/file.html#command:file" title="file"><code class="xref cmake cmake-command docutils literal notranslate">file(RENAME)</code></a> command learned to optionally capture
failure in a result variable. It also gained a <code class="docutils literal notranslate">NO_REPLACE</code>
option to fail if the destination exists.</li>
<li>The <a class="reference internal" href="../command/install.html#command:install" title="install"><code class="xref cmake cmake-command docutils literal notranslate">install()</code></a> command gained a new <code class="docutils literal notranslate">IMPORTED_RUNTIME_ARTIFACTS</code>
mode, which can be used to install the runtime artifacts of imported targets.</li>
<li>The <a class="reference internal" href="../command/install.html#command:install" title="install"><code class="xref cmake cmake-command docutils literal notranslate">install()</code></a> command gained a new <code class="docutils literal notranslate">RUNTIME_DEPENDENCY_SET</code> mode,
which can be used to install runtime dependencies using
<a class="reference internal" href="../command/file.html#command:file" title="file"><code class="xref cmake cmake-command docutils literal notranslate">file(GET_RUNTIME_DEPENDENCIES)</code></a>.</li>
<li>The <a class="reference internal" href="../command/install.html#command:install" title="install"><code class="xref cmake cmake-command docutils literal notranslate">install(TARGETS)</code></a> command gained new <code class="docutils literal notranslate">RUNTIME_DEPENDENCIES</code>
and <code class="docutils literal notranslate">RUNTIME_DEPENDENCY_SET</code> arguments, which can be used to install
runtime dependencies using <a class="reference internal" href="../command/file.html#command:file" title="file"><code class="xref cmake cmake-command docutils literal notranslate">file(GET_RUNTIME_DEPENDENCIES)</code></a>.</li>
<li>The <a class="reference internal" href="../command/install.html#command:install" title="install"><code class="xref cmake cmake-command docutils literal notranslate">install(SCRIPT|CODE)</code></a> command
supports a new option <code class="docutils literal notranslate">ALL_COMPONENTS</code> which allows
the corresponding code to run for every component of
a per component installation.</li>
<li>The <a class="reference internal" href="../command/project.html#command:project" title="project"><code class="xref cmake cmake-command docutils literal notranslate">project()</code></a> command now sets variables
<a class="reference internal" href="../variable/PROJECT_IS_TOP_LEVEL.html#variable:PROJECT_IS_TOP_LEVEL" title="PROJECT_IS_TOP_LEVEL"><code class="xref cmake cmake-variable docutils literal notranslate">PROJECT_IS_TOP_LEVEL</code></a> and <a class="reference internal" href="../variable/PROJECT-NAME_IS_TOP_LEVEL.html#variable:&lt;PROJECT-NAME&gt;_IS_TOP_LEVEL" title="&lt;PROJECT-NAME&gt;_IS_TOP_LEVEL"><code class="xref cmake cmake-variable docutils literal notranslate">&lt;PROJECT-NAME&gt;_IS_TOP_LEVEL</code></a>
to indicate whether it was called in a top-level <code class="docutils literal notranslate">CMakeLists.txt</code> file.</li>
</ul>
</section>
<section id="variables">
<h3><a class="toc-backref" href="#id16" role="doc-backlink">Variables</a><a class="headerlink" href="#variables" title="Permalink to this heading">¶</a></h3>
<ul class="simple">
<li>The <a class="reference internal" href="../envvar/CMAKE_TOOLCHAIN_FILE.html#envvar:CMAKE_TOOLCHAIN_FILE" title="CMAKE_TOOLCHAIN_FILE"><code class="xref cmake cmake-envvar docutils literal notranslate">CMAKE_TOOLCHAIN_FILE</code></a> environment variable was added to
provide a default value for the <a class="reference internal" href="../variable/CMAKE_TOOLCHAIN_FILE.html#variable:CMAKE_TOOLCHAIN_FILE" title="CMAKE_TOOLCHAIN_FILE"><code class="xref cmake cmake-variable docutils literal notranslate">CMAKE_TOOLCHAIN_FILE</code></a> variable.</li>
</ul>
</section>
<section id="properties">
<h3><a class="toc-backref" href="#id17" role="doc-backlink">Properties</a><a class="headerlink" href="#properties" title="Permalink to this heading">¶</a></h3>
<ul class="simple">
<li>The <a class="reference internal" href="../prop_dir/IMPORTED_TARGETS.html#prop_dir:IMPORTED_TARGETS" title="IMPORTED_TARGETS"><code class="xref cmake cmake-prop_dir docutils literal notranslate">IMPORTED_TARGETS</code></a> directory property was added to
get a list of <a class="reference internal" href="../manual/cmake-buildsystem.7.html#imported-targets">Imported Targets</a> created in the current
directory.</li>
<li>The <a class="reference internal" href="../prop_tgt/XCODE_EMBED_type.html#prop_tgt:XCODE_EMBED_&lt;type&gt;" title="XCODE_EMBED_&lt;type&gt;"><code class="xref cmake cmake-prop_tgt docutils literal notranslate">XCODE_EMBED_APP_EXTENSIONS</code></a> target property
was added to tell the <a class="reference internal" href="../generator/Xcode.html#generator:Xcode" title="Xcode"><code class="xref cmake cmake-generator docutils literal notranslate">Xcode</code></a> generator to embed app extensions
such as iMessage sticker packs.
Aspects of the embedding can be customized with the
<a class="reference internal" href="../prop_tgt/XCODE_EMBED_type.html#prop_tgt:XCODE_EMBED_&lt;type&gt;" title="XCODE_EMBED_&lt;type&gt;"><code class="xref cmake cmake-prop_tgt docutils literal notranslate">XCODE_EMBED_APP_EXTENSIONS_PATH</code></a>,
<a class="reference internal" href="../prop_tgt/XCODE_EMBED_type_CODE_SIGN_ON_COPY.html#prop_tgt:XCODE_EMBED_&lt;type&gt;_CODE_SIGN_ON_COPY" title="XCODE_EMBED_&lt;type&gt;_CODE_SIGN_ON_COPY"><code class="xref cmake cmake-prop_tgt docutils literal notranslate">XCODE_EMBED_APP_EXTENSIONS_CODE_SIGN_ON_COPY</code></a> and
<a class="reference internal" href="../prop_tgt/XCODE_EMBED_type_REMOVE_HEADERS_ON_COPY.html#prop_tgt:XCODE_EMBED_&lt;type&gt;_REMOVE_HEADERS_ON_COPY" title="XCODE_EMBED_&lt;type&gt;_REMOVE_HEADERS_ON_COPY"><code class="xref cmake cmake-prop_tgt docutils literal notranslate">XCODE_EMBED_APP_EXTENSIONS_REMOVE_HEADERS_ON_COPY</code></a>
properties.</li>
</ul>
</section>
<section id="modules">
<h3><a class="toc-backref" href="#id18" role="doc-backlink">Modules</a><a class="headerlink" href="#modules" title="Permalink to this heading">¶</a></h3>
<ul class="simple">
<li>The <a class="reference internal" href="../module/FindBLAS.html#module:FindBLAS" title="FindBLAS"><code class="xref cmake cmake-module docutils literal notranslate">FindBLAS</code></a> and <a class="reference internal" href="../module/FindLAPACK.html#module:FindLAPACK" title="FindLAPACK"><code class="xref cmake cmake-module docutils literal notranslate">FindLAPACK</code></a> modules learned to support
the serial <code class="docutils literal notranslate">Fujitsu_SSL2</code> and parallel <code class="docutils literal notranslate">Fujitsu_SSL2BLAMP</code> libraries.</li>
<li>The <a class="reference internal" href="../module/FindDevIL.html#module:FindDevIL" title="FindDevIL"><code class="xref cmake cmake-module docutils literal notranslate">FindDevIL</code></a> module now provides imported targets.</li>
<li>The <a class="reference internal" href="../module/FindIconv.html#module:FindIconv" title="FindIconv"><code class="xref cmake cmake-module docutils literal notranslate">FindIconv</code></a> module now has version support.</li>
<li>The <a class="reference internal" href="../module/FindIntl.html#module:FindIntl" title="FindIntl"><code class="xref cmake cmake-module docutils literal notranslate">FindIntl</code></a> module now has version support.</li>
<li>The <a class="reference internal" href="../module/FindMPI.html#module:FindMPI" title="FindMPI"><code class="xref cmake cmake-module docutils literal notranslate">FindMPI</code></a> module learned to support <code class="docutils literal notranslate">Fujitsu</code> and
<code class="docutils literal notranslate">FujitsuClang</code> in both host and cross compiling modes.</li>
<li>The <a class="reference internal" href="../module/FindMsys.html#module:FindMsys" title="FindMsys"><code class="xref cmake cmake-module docutils literal notranslate">FindMsys</code></a> module was added to find MSYS installations.
Like <a class="reference internal" href="../module/FindCygwin.html#module:FindCygwin" title="FindCygwin"><code class="xref cmake cmake-module docutils literal notranslate">FindCygwin</code></a>, it is used automatically by some other
find modules to locate UNIX-style tools on Windows.</li>
<li>The <a class="reference internal" href="../module/FindOpenMP.html#module:FindOpenMP" title="FindOpenMP"><code class="xref cmake cmake-module docutils literal notranslate">FindOpenMP</code></a> module learned to support <code class="docutils literal notranslate">Fujitsu</code> and
<code class="docutils literal notranslate">FujitsuClang</code>.</li>
<li>The <a class="reference internal" href="../module/FindVulkan.html#module:FindVulkan" title="FindVulkan"><code class="xref cmake cmake-module docutils literal notranslate">FindVulkan</code></a> module gained imported targets
<code class="docutils literal notranslate">Vulkan::Headers</code> and <code class="docutils literal notranslate">Vulkan::glslangValidator</code>.</li>
<li>The <a class="reference internal" href="../module/UseJava.html#module:UseJava" title="UseJava"><code class="xref cmake cmake-module docutils literal notranslate">UseJava</code></a> module command <code class="docutils literal notranslate">add_jar</code> gained a <code class="docutils literal notranslate">RESOURCES</code>
option to allow explicit naming of resources with non-optional namespace.</li>
<li>The <a class="reference internal" href="../module/UseSWIG.html#module:UseSWIG" title="UseSWIG"><code class="xref cmake cmake-module docutils literal notranslate">UseSWIG</code></a> module use now standard library naming conventions
for the <code class="docutils literal notranslate">CSharp</code> language. See policy <a class="reference internal" href="../policy/CMP0122.html#policy:CMP0122" title="CMP0122"><code class="xref cmake cmake-policy docutils literal notranslate">CMP0122</code></a>.</li>
<li>The <a class="reference internal" href="../module/UseSWIG.html#module:UseSWIG" title="UseSWIG"><code class="xref cmake cmake-module docutils literal notranslate">UseSWIG</code></a> module now supports using the <code class="docutils literal notranslate">swig</code> tool to
generate implicit dependencies with the <a class="reference internal" href="../generator/Xcode.html#generator:Xcode" title="Xcode"><code class="xref cmake cmake-generator docutils literal notranslate">Xcode</code></a> generator.</li>
</ul>
</section>
<section id="generator-expressions">
<h3><a class="toc-backref" href="#id19" role="doc-backlink">Generator Expressions</a><a class="headerlink" href="#generator-expressions" title="Permalink to this heading">¶</a></h3>
<ul class="simple">
<li>A new <a class="reference internal" href="../manual/cmake-generator-expressions.7.html#genex:TARGET_RUNTIME_DLLS" title="TARGET_RUNTIME_DLLS"><code class="xref cmake cmake-genex docutils literal notranslate">TARGET_RUNTIME_DLLS</code></a> generator expression was added.</li>
</ul>
</section>
<section id="ctest">
<h3><a class="toc-backref" href="#id20" role="doc-backlink">CTest</a><a class="headerlink" href="#ctest" title="Permalink to this heading">¶</a></h3>
<ul class="simple">
<li><a class="reference internal" href="../manual/ctest.1.html#manual:ctest(1)" title="ctest(1)"><code class="xref cmake cmake-manual docutils literal notranslate">ctest(1)</code></a> gained documentation for its ability to capture
<a class="reference internal" href="../command/ctest_test.html#additional-test-measurements">Additional Test Measurements</a>.</li>
<li><a class="reference internal" href="../manual/ctest.1.html#manual:ctest(1)" title="ctest(1)"><code class="xref cmake cmake-manual docutils literal notranslate">ctest(1)</code></a> learned to recognize files attached to a test at run time.
Previously it was only possible to attach files to tests at configure time
by using the <a class="reference internal" href="../prop_test/ATTACHED_FILES.html#prop_test:ATTACHED_FILES" title="ATTACHED_FILES"><code class="xref cmake cmake-prop_test docutils literal notranslate">ATTACHED_FILES</code></a> or
<a class="reference internal" href="../prop_test/ATTACHED_FILES_ON_FAIL.html#prop_test:ATTACHED_FILES_ON_FAIL" title="ATTACHED_FILES_ON_FAIL"><code class="xref cmake cmake-prop_test docutils literal notranslate">ATTACHED_FILES_ON_FAIL</code></a> test properties.
See <a class="reference internal" href="../command/ctest_test.html#additional-test-measurements">Additional Test Measurements</a> for more information.</li>
<li><a class="reference internal" href="../manual/ctest.1.html#manual:ctest(1)" title="ctest(1)"><code class="xref cmake cmake-manual docutils literal notranslate">ctest(1)</code></a> gained a <a class="reference internal" href="../manual/ctest.1.html#cmdoption-ctest-output-junit"><code class="xref std std-option docutils literal notranslate">--output-junit</code></a>
option to write test results to a JUnit XML file.</li>
<li>The <a class="reference internal" href="../command/ctest_build.html#command:ctest_build" title="ctest_build"><code class="xref cmake cmake-command docutils literal notranslate">ctest_build()</code></a> command gained a <code class="docutils literal notranslate">PARALLEL_LEVEL</code> option.</li>
</ul>
</section>
<section id="cpack">
<h3><a class="toc-backref" href="#id21" role="doc-backlink">CPack</a><a class="headerlink" href="#cpack" title="Permalink to this heading">¶</a></h3>
<ul class="simple">
<li>The <a class="reference internal" href="../cpack_gen/dmg.html#cpack_gen:CPack DragNDrop Generator" title="CPack DragNDrop Generator"><code class="xref cmake cmake-cpack_gen docutils literal notranslate">CPack DragNDrop Generator</code></a> gained option
<a class="reference internal" href="../cpack_gen/dmg.html#variable:CPACK_DMG_FILESYSTEM" title="CPACK_DMG_FILESYSTEM"><code class="xref cmake cmake-variable docutils literal notranslate">CPACK_DMG_FILESYSTEM</code></a> to control the <code class="docutils literal notranslate">.dmg</code> filesystem.</li>
<li>The <a class="reference internal" href="../cpack_gen/ifw.html#cpack_gen:CPack IFW Generator" title="CPack IFW Generator"><code class="xref cmake cmake-cpack_gen docutils literal notranslate">CPack IFW Generator</code></a> now supports hyphens in names
given to <a class="reference internal" href="../module/CPackIFW.html#command:cpack_ifw_configure_component" title="cpack_ifw_configure_component"><code class="xref cmake cmake-command docutils literal notranslate">cpack_ifw_configure_component()</code></a> or
<a class="reference internal" href="../module/CPackIFW.html#command:cpack_ifw_configure_component_group" title="cpack_ifw_configure_component_group"><code class="xref cmake cmake-command docutils literal notranslate">cpack_ifw_configure_component_group()</code></a> as <code class="docutils literal notranslate">DEPENDS</code> or
<code class="docutils literal notranslate">DEPENDENCIES</code> arguments. This requires QtIFW 3.1 or later.</li>
<li>The <a class="reference internal" href="../cpack_gen/nsis.html#cpack_gen:CPack NSIS Generator" title="CPack NSIS Generator"><code class="xref cmake cmake-cpack_gen docutils literal notranslate">CPack NSIS Generator</code></a> gained a new
<a class="reference internal" href="../cpack_gen/nsis.html#variable:CPACK_NSIS_EXECUTABLE" title="CPACK_NSIS_EXECUTABLE"><code class="xref cmake cmake-variable docutils literal notranslate">CPACK_NSIS_EXECUTABLE</code></a> variable to specify the <code class="docutils literal notranslate">makensis</code>
executable to use instead of the default one.</li>
<li>The <a class="reference internal" href="../variable/CPACK_CUSTOM_INSTALL_VARIABLES.html#variable:CPACK_CUSTOM_INSTALL_VARIABLES" title="CPACK_CUSTOM_INSTALL_VARIABLES"><code class="xref cmake cmake-variable docutils literal notranslate">CPACK_CUSTOM_INSTALL_VARIABLES</code></a> variable was added to set
variables in <code class="docutils literal notranslate">cmake_install.cmake</code> script invocations made by CPack.</li>
</ul>
</section>
</section>
<section id="deprecated-and-removed-features">
<h2><a class="toc-backref" href="#id22" role="doc-backlink">Deprecated and Removed Features</a><a class="headerlink" href="#deprecated-and-removed-features" title="Permalink to this heading">¶</a></h2>
<ul class="simple">
<li>Undocumented <a class="reference internal" href="../variable/CMAKE_SYSTEM_NAME.html#variable:CMAKE_SYSTEM_NAME" title="CMAKE_SYSTEM_NAME"><code class="xref cmake cmake-variable docutils literal notranslate">CMAKE_SYSTEM_NAME</code></a> version-stripping behavior has
been removed entirely. If it is set by a <code class="docutils literal notranslate">-D</code> flag or by a
<a class="reference internal" href="../manual/cmake-toolchains.7.html#manual:cmake-toolchains(7)" title="cmake-toolchains(7)"><code class="xref cmake cmake-manual docutils literal notranslate">toolchain file</code></a>, it is left unaltered,
even if it still contains a version number.
Similar <a class="reference internal" href="../variable/CMAKE_HOST_SYSTEM_NAME.html#variable:CMAKE_HOST_SYSTEM_NAME" title="CMAKE_HOST_SYSTEM_NAME"><code class="xref cmake cmake-variable docutils literal notranslate">CMAKE_HOST_SYSTEM_NAME</code></a> version-stripping behavior,
also undocumented, has been moved earlier, before <a class="reference internal" href="../command/project.html#command:project" title="project"><code class="xref cmake cmake-command docutils literal notranslate">project()</code></a> or
<a class="reference internal" href="../command/enable_language.html#command:enable_language" title="enable_language"><code class="xref cmake cmake-command docutils literal notranslate">enable_language()</code></a> is called.</li>
<li><code class="docutils literal notranslate">ARMClang</code> cpu/arch compile and link flags are no longer added
automatically based on the <a class="reference internal" href="../variable/CMAKE_SYSTEM_PROCESSOR.html#variable:CMAKE_SYSTEM_PROCESSOR" title="CMAKE_SYSTEM_PROCESSOR"><code class="xref cmake cmake-variable docutils literal notranslate">CMAKE_SYSTEM_PROCESSOR</code></a>
variable or the undocumented <code class="docutils literal notranslate">CMAKE_SYSTEM_ARCH</code> variable.
They must be specified explicitly. See policy <a class="reference internal" href="../policy/CMP0123.html#policy:CMP0123" title="CMP0123"><code class="xref cmake cmake-policy docutils literal notranslate">CMP0123</code></a>.</li>
</ul>
</section>
<section id="other-changes">
<h2><a class="toc-backref" href="#id23" role="doc-backlink">Other Changes</a><a class="headerlink" href="#other-changes" title="Permalink to this heading">¶</a></h2>
<ul class="simple">
<li>The <a class="reference internal" href="../command/find_file.html#command:find_file" title="find_file"><code class="xref cmake cmake-command docutils literal notranslate">find_file()</code></a>, <a class="reference internal" href="../command/find_path.html#command:find_path" title="find_path"><code class="xref cmake cmake-command docutils literal notranslate">find_path()</code></a>, <a class="reference internal" href="../command/find_program.html#command:find_program" title="find_program"><code class="xref cmake cmake-command docutils literal notranslate">find_program()</code></a>,
and <a class="reference internal" href="../command/find_library.html#command:find_library" title="find_library"><code class="xref cmake cmake-command docutils literal notranslate">find_library()</code></a> commands handle cache variables in the same way
regardless how they are defined. See policy <a class="reference internal" href="../policy/CMP0125.html#policy:CMP0125" title="CMP0125"><code class="xref cmake cmake-policy docutils literal notranslate">CMP0125</code></a> for details.</li>
<li>The <a class="reference internal" href="../command/find_file.html#command:find_file" title="find_file"><code class="xref cmake cmake-command docutils literal notranslate">find_file()</code></a>, <a class="reference internal" href="../command/find_path.html#command:find_path" title="find_path"><code class="xref cmake cmake-command docutils literal notranslate">find_path()</code></a>, <a class="reference internal" href="../command/find_program.html#command:find_program" title="find_program"><code class="xref cmake cmake-command docutils literal notranslate">find_program()</code></a>,
and <a class="reference internal" href="../command/find_library.html#command:find_library" title="find_library"><code class="xref cmake cmake-command docutils literal notranslate">find_library()</code></a> commands gained the option <code class="docutils literal notranslate">NO_CACHE</code> to store
find result in normal variable.</li>
<li>The <a class="reference internal" href="../command/foreach.html#command:foreach" title="foreach"><code class="xref cmake cmake-command docutils literal notranslate">foreach()</code></a> command now isolates loop variables in the loop scope.
See policy <a class="reference internal" href="../policy/CMP0124.html#policy:CMP0124" title="CMP0124"><code class="xref cmake cmake-policy docutils literal notranslate">CMP0124</code></a> for details.</li>
<li>The <a class="reference internal" href="../command/list.html#command:list" title="list"><code class="xref cmake cmake-command docutils literal notranslate">list()</code></a> command's <code class="docutils literal notranslate">GET</code>, <code class="docutils literal notranslate">INSERT</code>, <code class="docutils literal notranslate">SUBLIST</code>, and
<code class="docutils literal notranslate">REMOVE_AT</code> subcommands now error with invalid (i.e., non-integer) values
are given as any of their index arguments based on the setting of policy
<a class="reference internal" href="../policy/CMP0121.html#policy:CMP0121" title="CMP0121"><code class="xref cmake cmake-policy docutils literal notranslate">CMP0121</code></a>.</li>
<li>The <a class="reference internal" href="../command/set.html#command:set" title="set"><code class="xref cmake cmake-command docutils literal notranslate">set(CACHE)</code></a> command no longer removes a normal variable
of the same name, if any. See policy <a class="reference internal" href="../policy/CMP0126.html#policy:CMP0126" title="CMP0126"><code class="xref cmake cmake-policy docutils literal notranslate">CMP0126</code></a>.</li>
<li><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">target_link_libraries()</code></a> calls referencing object libraries
via the <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">TARGET_OBJECTS</code></a> generator expression now place the
object files before all libraries on the link line, regardless of
their specified order. See documentation on
<a class="reference internal" href="../command/target_link_libraries.html#linking-object-libraries-via-target-objects">Linking Object Libraries via $&lt;TARGET_OBJECTS&gt;</a> for details.</li>
<li>The <a class="reference internal" href="../manual/cmake-generators.7.html#ninja-generators">Ninja Generators</a> now pass source files and include directories
to the compiler using absolute paths. This makes diagnostic messages and
debug symbols more consistent, and matches the <a class="reference internal" href="../manual/cmake-generators.7.html#makefile-generators">Makefile Generators</a>.</li>
<li>The <a class="reference internal" href="../generator/NMake%20Makefiles.html#generator:NMake Makefiles" title="NMake Makefiles"><code class="xref cmake cmake-generator docutils literal notranslate">NMake Makefiles</code></a> generator now encodes the generated
makefiles as UTF-8 with a BOM when using <code class="docutils literal notranslate">nmake</code> from VS 9 or above.</li>
<li>The <a class="reference internal" href="../manual/cmake-generators.7.html#visual-studio-generators">Visual Studio Generators</a> for VS 2010 and above now place
per-source preprocessor definitions after target-wide preprocssor
definitions. This makes VS consistent with the <a class="reference internal" href="../manual/cmake-generators.7.html#ninja-generators">Ninja Generators</a>
and the <a class="reference internal" href="../manual/cmake-generators.7.html#makefile-generators">Makefile Generators</a>.</li>
<li>The precompiled binaries provided on
<a class="reference external" href="https://cmake.org/download/">cmake.org</a> now support
<code class="docutils literal notranslate">liblzma</code> multi-threading. See the <a class="reference internal" href="../module/CPack.html#variable:CPACK_THREADS" title="CPACK_THREADS"><code class="xref cmake cmake-variable docutils literal notranslate">CPACK_THREADS</code></a> and
<a class="reference internal" href="../cpack_gen/archive.html#variable:CPACK_ARCHIVE_THREADS" title="CPACK_ARCHIVE_THREADS"><code class="xref cmake cmake-variable docutils literal notranslate">CPACK_ARCHIVE_THREADS</code></a> variables.</li>
</ul>
</section>
<section id="updates">
<h2><a class="toc-backref" href="#id24" role="doc-backlink">Updates</a><a class="headerlink" href="#updates" title="Permalink to this heading">¶</a></h2>
Changes made since CMake 3.21.0 include the following.
<section id="id1">
<h3><a class="toc-backref" href="#id25" role="doc-backlink">3.21.1</a><a class="headerlink" href="#id1" title="Permalink to this heading">¶</a></h3>
<ul class="simple">
<li>The <a class="reference internal" href="../generator/Visual%20Studio%2017%202022.html#generator:Visual Studio 17 2022" title="Visual Studio 17 2022"><code class="xref cmake cmake-generator docutils literal notranslate">Visual Studio 17 2022</code></a> generator is now based on
&quot;Visual Studio 2022 Preview 2&quot;. Previously it was based on &quot;Preview 1.1&quot;.</li>
</ul>
</section>
<section id="id2">
<h3><a class="toc-backref" href="#id26" role="doc-backlink">3.21.2</a><a class="headerlink" href="#id2" title="Permalink to this heading">¶</a></h3>
<ul class="simple">
<li><code class="docutils literal notranslate">CUDA</code> targets with <a class="reference internal" href="../prop_tgt/CUDA_SEPARABLE_COMPILATION.html#prop_tgt:CUDA_SEPARABLE_COMPILATION" title="CUDA_SEPARABLE_COMPILATION"><code class="xref cmake cmake-prop_tgt docutils literal notranslate">CUDA_SEPARABLE_COMPILATION</code></a> enabled are now
correctly generated in non-root directories.</li>
<li>The <a class="reference internal" href="../generator/Visual%20Studio%2017%202022.html#generator:Visual Studio 17 2022" title="Visual Studio 17 2022"><code class="xref cmake cmake-generator docutils literal notranslate">Visual Studio 17 2022</code></a> generator is now based on
&quot;Visual Studio 2022 Preview 3.1&quot;. Previously it was based on &quot;Preview 2&quot;.</li>
</ul>
</section>
<section id="id3">
<h3><a class="toc-backref" href="#id27" role="doc-backlink">3.21.3</a><a class="headerlink" href="#id3" title="Permalink to this heading">¶</a></h3>
<ul class="simple">
<li>The <a class="reference internal" href="../generator/Visual%20Studio%2017%202022.html#generator:Visual Studio 17 2022" title="Visual Studio 17 2022"><code class="xref cmake cmake-generator docutils literal notranslate">Visual Studio 17 2022</code></a> generator is now based on
&quot;Visual Studio 2022 Preview 4&quot;. Previously it was based on &quot;Preview 3.1&quot;.</li>
<li>The AMD ROCm Platform <code class="docutils literal notranslate">hipcc</code> compiler was identifed by CMake 3.21.0
through 3.21.2 as a distinct compiler with id <code class="docutils literal notranslate">ROCMClang</code>. This has
been removed because it caused regressions. Instead:
<ul>
<li><code class="docutils literal notranslate">hipcc</code> may no longer be used as a <code class="docutils literal notranslate">HIP</code> compiler because it
interferes with flags CMake needs to pass to Clang. Use Clang directly.</li>
<li><code class="docutils literal notranslate">hipcc</code> may once again be used as a <code class="docutils literal notranslate">CXX</code> compiler, and is treated as
whatever compiler it selects underneath, as CMake 3.20 and below did.</li>
</ul>
</li>
</ul>
</section>
<section id="id4">
<h3><a class="toc-backref" href="#id28" role="doc-backlink">3.21.4</a><a class="headerlink" href="#id4" title="Permalink to this heading">¶</a></h3>
<ul class="simple">
<li>The <a class="reference internal" href="../generator/Visual%20Studio%2017%202022.html#generator:Visual Studio 17 2022" title="Visual Studio 17 2022"><code class="xref cmake cmake-generator docutils literal notranslate">Visual Studio 17 2022</code></a> generator is now based on the
&quot;Visual Studio 2022&quot; release candidates. Previously it was based on
preview versions.</li>
</ul>
</section>
<section id="id5">
<h3><a class="toc-backref" href="#id29" role="doc-backlink">3.21.5, 3.21.6, 3.21.7</a><a class="headerlink" href="#id5" title="Permalink to this heading">¶</a></h3>
These versions made no changes to documented features or interfaces.
Some implementation updates were made to support ecosystem changes
and/or fix regressions.
</section>
</section>
</section>

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 <div class="sphinxsidebar" role="navigation" aria-label="main navigation">
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 <h3><a href="../index.html">Table of Contents</a></h3>
 <ul>
<li><a class="reference internal" href="#">CMake 3.21 Release Notes</a><ul>
<li><a class="reference internal" href="#new-features">New Features</a><ul>
<li><a class="reference internal" href="#presets">Presets</a></li>
<li><a class="reference internal" href="#generators">Generators</a></li>
<li><a class="reference internal" href="#languages">Languages</a></li>
<li><a class="reference internal" href="#command-line">Command-Line</a></li>
<li><a class="reference internal" href="#compilers">Compilers</a></li>
<li><a class="reference internal" href="#platforms">Platforms</a></li>
<li><a class="reference internal" href="#file-based-api">File-Based API</a></li>
<li><a class="reference internal" href="#commands">Commands</a></li>
<li><a class="reference internal" href="#variables">Variables</a></li>
<li><a class="reference internal" href="#properties">Properties</a></li>
<li><a class="reference internal" href="#modules">Modules</a></li>
<li><a class="reference internal" href="#generator-expressions">Generator Expressions</a></li>
<li><a class="reference internal" href="#ctest">CTest</a></li>
<li><a class="reference internal" href="#cpack">CPack</a></li>
</ul>
</li>
<li><a class="reference internal" href="#deprecated-and-removed-features">Deprecated and Removed Features</a></li>
<li><a class="reference internal" href="#other-changes">Other Changes</a></li>
<li><a class="reference internal" href="#updates">Updates</a><ul>
<li><a class="reference internal" href="#id1">3.21.1</a></li>
<li><a class="reference internal" href="#id2">3.21.2</a></li>
<li><a class="reference internal" href="#id3">3.21.3</a></li>
<li><a class="reference internal" href="#id4">3.21.4</a></li>
<li><a class="reference internal" href="#id5">3.21.5, 3.21.6, 3.21.7</a></li>
</ul>
</li>
</ul>
</li>
</ul>

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