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| <span class="target" id="manual:cmake-toolchains(7)"></span><div class="section" id="cmake-toolchains-7"> |
| <h1><a class="toc-backref" href="#id5">cmake-toolchains(7)</a><a class="headerlink" href="#cmake-toolchains-7" title="Permalink to this headline">¶</a></h1> |
| <div class="contents topic" id="contents"> |
| <p class="topic-title first">Contents</p> |
| <ul class="simple"> |
| <li><a class="reference internal" href="#cmake-toolchains-7" id="id5">cmake-toolchains(7)</a><ul> |
| <li><a class="reference internal" href="#introduction" id="id6">Introduction</a></li> |
| <li><a class="reference internal" href="#languages" id="id7">Languages</a></li> |
| <li><a class="reference internal" href="#variables-and-properties" id="id8">Variables and Properties</a></li> |
| <li><a class="reference internal" href="#toolchain-features" id="id9">Toolchain Features</a></li> |
| <li><a class="reference internal" href="#cross-compiling" id="id10">Cross Compiling</a><ul> |
| <li><a class="reference internal" href="#cross-compiling-for-linux" id="id11">Cross Compiling for Linux</a></li> |
| <li><a class="reference internal" href="#cross-compiling-for-the-cray-linux-environment" id="id12">Cross Compiling for the Cray Linux Environment</a></li> |
| <li><a class="reference internal" href="#cross-compiling-using-clang" id="id13">Cross Compiling using Clang</a></li> |
| <li><a class="reference internal" href="#cross-compiling-for-qnx" id="id14">Cross Compiling for QNX</a></li> |
| <li><a class="reference internal" href="#cross-compiling-for-windows-ce" id="id15">Cross Compiling for Windows CE</a></li> |
| <li><a class="reference internal" href="#cross-compiling-for-windows-10-universal-applications" id="id16">Cross Compiling for Windows 10 Universal Applications</a></li> |
| <li><a class="reference internal" href="#cross-compiling-for-windows-phone" id="id17">Cross Compiling for Windows Phone</a></li> |
| <li><a class="reference internal" href="#cross-compiling-for-windows-store" id="id18">Cross Compiling for Windows Store</a></li> |
| <li><a class="reference internal" href="#cross-compiling-for-android" id="id19">Cross Compiling for Android</a><ul> |
| <li><a class="reference internal" href="#cross-compiling-for-android-with-the-ndk" id="id20">Cross Compiling for Android with the NDK</a></li> |
| <li><a class="reference internal" href="#cross-compiling-for-android-with-a-standalone-toolchain" id="id21">Cross Compiling for Android with a Standalone Toolchain</a></li> |
| <li><a class="reference internal" href="#cross-compiling-for-android-with-nvidia-nsight-tegra-visual-studio-edition" id="id22">Cross Compiling for Android with NVIDIA Nsight Tegra Visual Studio Edition</a></li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <div class="section" id="introduction"> |
| <h2><a class="toc-backref" href="#id6">Introduction</a><a class="headerlink" href="#introduction" title="Permalink to this headline">¶</a></h2> |
| <p>CMake uses a toolchain of utilities to compile, link libraries and create |
| archives, and other tasks to drive the build. The toolchain utilities available |
| are determined by the languages enabled. In normal builds, CMake automatically |
| determines the toolchain for host builds based on system introspection and |
| defaults. In cross-compiling scenarios, a toolchain file may be specified |
| with information about compiler and utility paths.</p> |
| </div> |
| <div class="section" id="languages"> |
| <h2><a class="toc-backref" href="#id7">Languages</a><a class="headerlink" href="#languages" title="Permalink to this headline">¶</a></h2> |
| <p>Languages are enabled by the <span class="target" id="index-0-command:project"></span><a class="reference internal" href="../command/project.html#command:project" title="project"><code class="xref cmake cmake-command docutils literal"><span class="pre">project()</span></code></a> command. Language-specific |
| built-in variables, such as |
| <span class="target" id="index-0-variable:CMAKE_<LANG>_COMPILER"></span><a class="reference internal" href="../variable/CMAKE_LANG_COMPILER.html#variable:CMAKE_<LANG>_COMPILER" title="CMAKE_<LANG>_COMPILER"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_CXX_COMPILER</span></code></a>, |
| <span class="target" id="index-0-variable:CMAKE_<LANG>_COMPILER_ID"></span><a class="reference internal" href="../variable/CMAKE_LANG_COMPILER_ID.html#variable:CMAKE_<LANG>_COMPILER_ID" title="CMAKE_<LANG>_COMPILER_ID"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_CXX_COMPILER_ID</span></code></a> etc are set by |
| invoking the <span class="target" id="index-1-command:project"></span><a class="reference internal" href="../command/project.html#command:project" title="project"><code class="xref cmake cmake-command docutils literal"><span class="pre">project()</span></code></a> command. If no project command |
| is in the top-level CMakeLists file, one will be implicitly generated. By default |
| the enabled languages are C and CXX:</p> |
| <div class="highlight-cmake"><div class="highlight"><pre><span></span><span class="nb">project</span><span class="p">(</span><span class="s">C_Only</span> <span class="s">C</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| <p>A special value of NONE can also be used with the <span class="target" id="index-2-command:project"></span><a class="reference internal" href="../command/project.html#command:project" title="project"><code class="xref cmake cmake-command docutils literal"><span class="pre">project()</span></code></a> command |
| to enable no languages:</p> |
| <div class="highlight-cmake"><div class="highlight"><pre><span></span><span class="nb">project</span><span class="p">(</span><span class="s">MyProject</span> <span class="s">NONE</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| <p>The <span class="target" id="index-0-command:enable_language"></span><a class="reference internal" href="../command/enable_language.html#command:enable_language" title="enable_language"><code class="xref cmake cmake-command docutils literal"><span class="pre">enable_language()</span></code></a> command can be used to enable languages after the |
| <span class="target" id="index-3-command:project"></span><a class="reference internal" href="../command/project.html#command:project" title="project"><code class="xref cmake cmake-command docutils literal"><span class="pre">project()</span></code></a> command:</p> |
| <div class="highlight-cmake"><div class="highlight"><pre><span></span><span class="nb">enable_language</span><span class="p">(</span><span class="s">CXX</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| <p>When a language is enabled, CMake finds a compiler for that language, and |
| determines some information, such as the vendor and version of the compiler, |
| the target architecture and bitwidth, the location of corresponding utilities |
| etc.</p> |
| <p>The <span class="target" id="index-0-prop_gbl:ENABLED_LANGUAGES"></span><a class="reference internal" href="../prop_gbl/ENABLED_LANGUAGES.html#prop_gbl:ENABLED_LANGUAGES" title="ENABLED_LANGUAGES"><code class="xref cmake cmake-prop_gbl docutils literal"><span class="pre">ENABLED_LANGUAGES</span></code></a> global property contains the languages which |
| are currently enabled.</p> |
| </div> |
| <div class="section" id="variables-and-properties"> |
| <h2><a class="toc-backref" href="#id8">Variables and Properties</a><a class="headerlink" href="#variables-and-properties" title="Permalink to this headline">¶</a></h2> |
| <p>Several variables relate to the language components of a toolchain which are |
| enabled. <span class="target" id="index-1-variable:CMAKE_<LANG>_COMPILER"></span><a class="reference internal" href="../variable/CMAKE_LANG_COMPILER.html#variable:CMAKE_<LANG>_COMPILER" title="CMAKE_<LANG>_COMPILER"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_<LANG>_COMPILER</span></code></a> is the full path to the compiler used |
| for <code class="docutils literal"><span class="pre"><LANG></span></code>. <span class="target" id="index-1-variable:CMAKE_<LANG>_COMPILER_ID"></span><a class="reference internal" href="../variable/CMAKE_LANG_COMPILER_ID.html#variable:CMAKE_<LANG>_COMPILER_ID" title="CMAKE_<LANG>_COMPILER_ID"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_<LANG>_COMPILER_ID</span></code></a> is the identifier used |
| by CMake for the compiler and <span class="target" id="index-0-variable:CMAKE_<LANG>_COMPILER_VERSION"></span><a class="reference internal" href="../variable/CMAKE_LANG_COMPILER_VERSION.html#variable:CMAKE_<LANG>_COMPILER_VERSION" title="CMAKE_<LANG>_COMPILER_VERSION"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_<LANG>_COMPILER_VERSION</span></code></a> is the |
| version of the compiler.</p> |
| <p>The <span class="target" id="index-0-variable:CMAKE_<LANG>_FLAGS"></span><a class="reference internal" href="../variable/CMAKE_LANG_FLAGS.html#variable:CMAKE_<LANG>_FLAGS" title="CMAKE_<LANG>_FLAGS"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_<LANG>_FLAGS</span></code></a> variables and the configuration-specific |
| equivalents contain flags that will be added to the compile command when |
| compiling a file of a particular language.</p> |
| <p>As the linker is invoked by the compiler driver, CMake needs a way to determine |
| which compiler to use to invoke the linker. This is calculated by the |
| <span class="target" id="index-0-prop_sf:LANGUAGE"></span><a class="reference internal" href="../prop_sf/LANGUAGE.html#prop_sf:LANGUAGE" title="LANGUAGE"><code class="xref cmake cmake-prop_sf docutils literal"><span class="pre">LANGUAGE</span></code></a> of source files in the target, and in the case of static |
| libraries, the language of the dependent libraries. The choice CMake makes may |
| be overridden with the <span class="target" id="index-0-prop_tgt:LINKER_LANGUAGE"></span><a class="reference internal" href="../prop_tgt/LINKER_LANGUAGE.html#prop_tgt:LINKER_LANGUAGE" title="LINKER_LANGUAGE"><code class="xref cmake cmake-prop_tgt docutils literal"><span class="pre">LINKER_LANGUAGE</span></code></a> target property.</p> |
| </div> |
| <div class="section" id="toolchain-features"> |
| <h2><a class="toc-backref" href="#id9">Toolchain Features</a><a class="headerlink" href="#toolchain-features" title="Permalink to this headline">¶</a></h2> |
| <p>CMake provides the <span class="target" id="index-0-command:try_compile"></span><a class="reference internal" href="../command/try_compile.html#command:try_compile" title="try_compile"><code class="xref cmake cmake-command docutils literal"><span class="pre">try_compile()</span></code></a> command and wrapper macros such as |
| <span class="target" id="index-0-module:CheckCXXSourceCompiles"></span><a class="reference internal" href="../module/CheckCXXSourceCompiles.html#module:CheckCXXSourceCompiles" title="CheckCXXSourceCompiles"><code class="xref cmake cmake-module docutils literal"><span class="pre">CheckCXXSourceCompiles</span></code></a>, <span class="target" id="index-0-module:CheckCXXSymbolExists"></span><a class="reference internal" href="../module/CheckCXXSymbolExists.html#module:CheckCXXSymbolExists" title="CheckCXXSymbolExists"><code class="xref cmake cmake-module docutils literal"><span class="pre">CheckCXXSymbolExists</span></code></a> and |
| <span class="target" id="index-0-module:CheckIncludeFile"></span><a class="reference internal" href="../module/CheckIncludeFile.html#module:CheckIncludeFile" title="CheckIncludeFile"><code class="xref cmake cmake-module docutils literal"><span class="pre">CheckIncludeFile</span></code></a> to test capability and availability of various |
| toolchain features. These APIs test the toolchain in some way and cache the |
| result so that the test does not have to be performed again the next time |
| CMake runs.</p> |
| <p>Some toolchain features have built-in handling in CMake, and do not require |
| compile-tests. For example, <span class="target" id="index-0-prop_tgt:POSITION_INDEPENDENT_CODE"></span><a class="reference internal" href="../prop_tgt/POSITION_INDEPENDENT_CODE.html#prop_tgt:POSITION_INDEPENDENT_CODE" title="POSITION_INDEPENDENT_CODE"><code class="xref cmake cmake-prop_tgt docutils literal"><span class="pre">POSITION_INDEPENDENT_CODE</span></code></a> allows |
| specifying that a target should be built as position-independent code, if |
| the compiler supports that feature. The <span class="target" id="index-0-prop_tgt:<LANG>_VISIBILITY_PRESET"></span><a class="reference internal" href="../prop_tgt/LANG_VISIBILITY_PRESET.html#prop_tgt:<LANG>_VISIBILITY_PRESET" title="<LANG>_VISIBILITY_PRESET"><code class="xref cmake cmake-prop_tgt docutils literal"><span class="pre"><LANG>_VISIBILITY_PRESET</span></code></a> |
| and <span class="target" id="index-0-prop_tgt:VISIBILITY_INLINES_HIDDEN"></span><a class="reference internal" href="../prop_tgt/VISIBILITY_INLINES_HIDDEN.html#prop_tgt:VISIBILITY_INLINES_HIDDEN" title="VISIBILITY_INLINES_HIDDEN"><code class="xref cmake cmake-prop_tgt docutils literal"><span class="pre">VISIBILITY_INLINES_HIDDEN</span></code></a> target properties add flags for |
| hidden visibility, if supported by the compiler.</p> |
| </div> |
| <div class="section" id="cross-compiling"> |
| <span id="cross-compiling-toolchain"></span><h2><a class="toc-backref" href="#id10">Cross Compiling</a><a class="headerlink" href="#cross-compiling" title="Permalink to this headline">¶</a></h2> |
| <p>If <span class="target" id="index-0-manual:cmake(1)"></span><a class="reference internal" href="cmake.1.html#manual:cmake(1)" title="cmake(1)"><code class="xref cmake cmake-manual docutils literal"><span class="pre">cmake(1)</span></code></a> is invoked with the command line parameter |
| <code class="docutils literal"><span class="pre">-DCMAKE_TOOLCHAIN_FILE=path/to/file</span></code>, the file will be loaded early to set |
| values for the compilers. |
| The <span class="target" id="index-0-variable:CMAKE_CROSSCOMPILING"></span><a class="reference internal" href="../variable/CMAKE_CROSSCOMPILING.html#variable:CMAKE_CROSSCOMPILING" title="CMAKE_CROSSCOMPILING"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_CROSSCOMPILING</span></code></a> variable is set to true when CMake is |
| cross-compiling.</p> |
| <div class="section" id="cross-compiling-for-linux"> |
| <h3><a class="toc-backref" href="#id11">Cross Compiling for Linux</a><a class="headerlink" href="#cross-compiling-for-linux" title="Permalink to this headline">¶</a></h3> |
| <p>A typical cross-compiling toolchain for Linux has content such |
| as:</p> |
| <div class="highlight-cmake"><div class="highlight"><pre><span></span><span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_SYSTEM_NAME</span> <span class="s">Linux</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_SYSTEM_PROCESSOR</span> <span class="s">arm</span><span class="p">)</span> |
| |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_SYSROOT</span> <span class="s">/home/devel/rasp-pi-rootfs</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_STAGING_PREFIX</span> <span class="s">/home/devel/stage</span><span class="p">)</span> |
| |
| <span class="nb">set</span><span class="p">(</span><span class="s">tools</span> <span class="s">/home/devel/gcc-4.7-linaro-rpi-gnueabihf</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_C_COMPILER</span> <span class="o">${</span><span class="nv">tools</span><span class="o">}</span><span class="s">/bin/arm-linux-gnueabihf-gcc</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_CXX_COMPILER</span> <span class="o">${</span><span class="nv">tools</span><span class="o">}</span><span class="s">/bin/arm-linux-gnueabihf-g++</span><span class="p">)</span> |
| |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_FIND_ROOT_PATH_MODE_PROGRAM</span> <span class="s">NEVER</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_FIND_ROOT_PATH_MODE_LIBRARY</span> <span class="s">ONLY</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_FIND_ROOT_PATH_MODE_INCLUDE</span> <span class="s">ONLY</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_FIND_ROOT_PATH_MODE_PACKAGE</span> <span class="s">ONLY</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| <p>The <span class="target" id="index-0-variable:CMAKE_SYSTEM_NAME"></span><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"><span class="pre">CMAKE_SYSTEM_NAME</span></code></a> is the CMake-identifier of the target platform |
| to build for.</p> |
| <p>The <span class="target" id="index-0-variable:CMAKE_SYSTEM_PROCESSOR"></span><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"><span class="pre">CMAKE_SYSTEM_PROCESSOR</span></code></a> is the CMake-identifier of the target architecture |
| to build for.</p> |
| <p>The <span class="target" id="index-0-variable:CMAKE_SYSROOT"></span><a class="reference internal" href="../variable/CMAKE_SYSROOT.html#variable:CMAKE_SYSROOT" title="CMAKE_SYSROOT"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_SYSROOT</span></code></a> is optional, and may be specified if a sysroot |
| is available.</p> |
| <p>The <span class="target" id="index-0-variable:CMAKE_STAGING_PREFIX"></span><a class="reference internal" href="../variable/CMAKE_STAGING_PREFIX.html#variable:CMAKE_STAGING_PREFIX" title="CMAKE_STAGING_PREFIX"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_STAGING_PREFIX</span></code></a> is also optional. It may be used to specify |
| a path on the host to install to. The <span class="target" id="index-0-variable:CMAKE_INSTALL_PREFIX"></span><a class="reference internal" href="../variable/CMAKE_INSTALL_PREFIX.html#variable:CMAKE_INSTALL_PREFIX" title="CMAKE_INSTALL_PREFIX"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_INSTALL_PREFIX</span></code></a> is always |
| the runtime installation location, even when cross-compiling.</p> |
| <p>The <span class="target" id="index-2-variable:CMAKE_<LANG>_COMPILER"></span><a class="reference internal" href="../variable/CMAKE_LANG_COMPILER.html#variable:CMAKE_<LANG>_COMPILER" title="CMAKE_<LANG>_COMPILER"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_<LANG>_COMPILER</span></code></a> variables may be set to full paths, or to |
| names of compilers to search for in standard locations. For toolchains that |
| do not support linking binaries without custom flags or scripts one may set |
| the <span class="target" id="index-0-variable:CMAKE_TRY_COMPILE_TARGET_TYPE"></span><a class="reference internal" href="../variable/CMAKE_TRY_COMPILE_TARGET_TYPE.html#variable:CMAKE_TRY_COMPILE_TARGET_TYPE" title="CMAKE_TRY_COMPILE_TARGET_TYPE"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_TRY_COMPILE_TARGET_TYPE</span></code></a> variable to <code class="docutils literal"><span class="pre">STATIC_LIBRARY</span></code> |
| to tell CMake not to try to link executables during its checks.</p> |
| <p>CMake <code class="docutils literal"><span class="pre">find_*</span></code> commands will look in the sysroot, and the <span class="target" id="index-0-variable:CMAKE_FIND_ROOT_PATH"></span><a class="reference internal" href="../variable/CMAKE_FIND_ROOT_PATH.html#variable:CMAKE_FIND_ROOT_PATH" title="CMAKE_FIND_ROOT_PATH"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_FIND_ROOT_PATH</span></code></a> |
| entries by default in all cases, as well as looking in the host system root prefix. |
| Although this can be controlled on a case-by-case basis, when cross-compiling, it |
| can be useful to exclude looking in either the host or the target for particular |
| artifacts. Generally, includes, libraries and packages should be found in the |
| target system prefixes, whereas executables which must be run as part of the build |
| should be found only on the host and not on the target. This is the purpose of |
| the <code class="docutils literal"><span class="pre">CMAKE_FIND_ROOT_PATH_MODE_*</span></code> variables.</p> |
| </div> |
| <div class="section" id="cross-compiling-for-the-cray-linux-environment"> |
| <span id="cray-cross-compile"></span><h3><a class="toc-backref" href="#id12">Cross Compiling for the Cray Linux Environment</a><a class="headerlink" href="#cross-compiling-for-the-cray-linux-environment" title="Permalink to this headline">¶</a></h3> |
| <p>Cross compiling for compute nodes in the Cray Linux Environment can be done |
| without needing a separate toolchain file. Specifying |
| <code class="docutils literal"><span class="pre">-DCMAKE_SYSTEM_NAME=CrayLinuxEnvironment</span></code> on the CMake command line will |
| ensure that the appropriate build settings and search paths are configured. |
| The platform will pull its configuration from the current environment |
| variables and will configure a project to use the compiler wrappers from the |
| Cray Programming Environment’s <code class="docutils literal"><span class="pre">PrgEnv-*</span></code> modules if present and loaded.</p> |
| <p>The default configuration of the Cray Programming Environment is to only |
| support static libraries. This can be overridden and shared libraries |
| enabled by setting the <code class="docutils literal"><span class="pre">CRAYPE_LINK_TYPE</span></code> environment variable to |
| <code class="docutils literal"><span class="pre">dynamic</span></code>.</p> |
| <p>Running CMake without specifying <span class="target" id="index-1-variable:CMAKE_SYSTEM_NAME"></span><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"><span class="pre">CMAKE_SYSTEM_NAME</span></code></a> will |
| run the configure step in host mode assuming a standard Linux environment. |
| If not overridden, the <code class="docutils literal"><span class="pre">PrgEnv-*</span></code> compiler wrappers will end up getting used, |
| which if targeting the either the login node or compute node, is likely not the |
| desired behavior. The exception to this would be if you are building directly |
| on a NID instead of cross-compiling from a login node. If trying to build |
| software for a login node, you will need to either first unload the |
| currently loaded <code class="docutils literal"><span class="pre">PrgEnv-*</span></code> module or explicitly tell CMake to use the |
| system compilers in <code class="docutils literal"><span class="pre">/usr/bin</span></code> instead of the Cray wrappers. If instead |
| targeting a compute node is desired, just specify the |
| <span class="target" id="index-2-variable:CMAKE_SYSTEM_NAME"></span><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"><span class="pre">CMAKE_SYSTEM_NAME</span></code></a> as mentioned above.</p> |
| </div> |
| <div class="section" id="cross-compiling-using-clang"> |
| <h3><a class="toc-backref" href="#id13">Cross Compiling using Clang</a><a class="headerlink" href="#cross-compiling-using-clang" title="Permalink to this headline">¶</a></h3> |
| <p>Some compilers such as Clang are inherently cross compilers. |
| The <span class="target" id="index-0-variable:CMAKE_<LANG>_COMPILER_TARGET"></span><a class="reference internal" href="../variable/CMAKE_LANG_COMPILER_TARGET.html#variable:CMAKE_<LANG>_COMPILER_TARGET" title="CMAKE_<LANG>_COMPILER_TARGET"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_<LANG>_COMPILER_TARGET</span></code></a> can be set to pass a |
| value to those supported compilers when compiling:</p> |
| <div class="highlight-cmake"><div class="highlight"><pre><span></span><span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_SYSTEM_NAME</span> <span class="s">Linux</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_SYSTEM_PROCESSOR</span> <span class="s">arm</span><span class="p">)</span> |
| |
| <span class="nb">set</span><span class="p">(</span><span class="s">triple</span> <span class="s">arm-linux-gnueabihf</span><span class="p">)</span> |
| |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_C_COMPILER</span> <span class="s">clang</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_C_COMPILER_TARGET</span> <span class="o">${</span><span class="nv">triple</span><span class="o">}</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_CXX_COMPILER</span> <span class="s">clang++</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_CXX_COMPILER_TARGET</span> <span class="o">${</span><span class="nv">triple</span><span class="o">}</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| <p>Similarly, some compilers do not ship their own supplementary utilities |
| such as linkers, but provide a way to specify the location of the external |
| toolchain which will be used by the compiler driver. The |
| <span class="target" id="index-0-variable:CMAKE_<LANG>_COMPILER_EXTERNAL_TOOLCHAIN"></span><a class="reference internal" href="../variable/CMAKE_LANG_COMPILER_EXTERNAL_TOOLCHAIN.html#variable:CMAKE_<LANG>_COMPILER_EXTERNAL_TOOLCHAIN" title="CMAKE_<LANG>_COMPILER_EXTERNAL_TOOLCHAIN"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_<LANG>_COMPILER_EXTERNAL_TOOLCHAIN</span></code></a> variable can be set in a |
| toolchain file to pass the path to the compiler driver.</p> |
| </div> |
| <div class="section" id="cross-compiling-for-qnx"> |
| <h3><a class="toc-backref" href="#id14">Cross Compiling for QNX</a><a class="headerlink" href="#cross-compiling-for-qnx" title="Permalink to this headline">¶</a></h3> |
| <p>As the Clang compiler the QNX QCC compile is inherently a cross compiler. |
| And the <span class="target" id="index-1-variable:CMAKE_<LANG>_COMPILER_TARGET"></span><a class="reference internal" href="../variable/CMAKE_LANG_COMPILER_TARGET.html#variable:CMAKE_<LANG>_COMPILER_TARGET" title="CMAKE_<LANG>_COMPILER_TARGET"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_<LANG>_COMPILER_TARGET</span></code></a> can be set to pass a |
| value to those supported compilers when compiling:</p> |
| <div class="highlight-cmake"><div class="highlight"><pre><span></span><span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_SYSTEM_NAME</span> <span class="s">QNX</span><span class="p">)</span> |
| |
| <span class="nb">set</span><span class="p">(</span><span class="s">arch</span> <span class="s">gcc_ntoarmv7le</span><span class="p">)</span> |
| |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_C_COMPILER</span> <span class="s">qcc</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_C_COMPILER_TARGET</span> <span class="o">${</span><span class="nv">arch</span><span class="o">}</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_CXX_COMPILER</span> <span class="s">QCC</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_CXX_COMPILER_TARGET</span> <span class="o">${</span><span class="nv">arch</span><span class="o">}</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="cross-compiling-for-windows-ce"> |
| <h3><a class="toc-backref" href="#id15">Cross Compiling for Windows CE</a><a class="headerlink" href="#cross-compiling-for-windows-ce" title="Permalink to this headline">¶</a></h3> |
| <p>Cross compiling for Windows CE requires the corresponding SDK being |
| installed on your system. These SDKs are usually installed under |
| <code class="docutils literal"><span class="pre">C:/Program</span> <span class="pre">Files</span> <span class="pre">(x86)/Windows</span> <span class="pre">CE</span> <span class="pre">Tools/SDKs</span></code>.</p> |
| <p>A toolchain file to configure a Visual Studio generator for |
| Windows CE may look like this:</p> |
| <div class="highlight-cmake"><div class="highlight"><pre><span></span><span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_SYSTEM_NAME</span> <span class="s">WindowsCE</span><span class="p">)</span> |
| |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_SYSTEM_VERSION</span> <span class="s">8.0</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_SYSTEM_PROCESSOR</span> <span class="s">arm</span><span class="p">)</span> |
| |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_GENERATOR_TOOLSET</span> <span class="s">CE800</span><span class="p">)</span> <span class="c"># Can be omitted for 8.0</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_GENERATOR_PLATFORM</span> <span class="s">SDK_AM335X_SK_WEC2013_V310</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| <p>The <span class="target" id="index-0-variable:CMAKE_GENERATOR_PLATFORM"></span><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"><span class="pre">CMAKE_GENERATOR_PLATFORM</span></code></a> tells the generator which SDK to use. |
| Further <span class="target" id="index-0-variable:CMAKE_SYSTEM_VERSION"></span><a class="reference internal" href="../variable/CMAKE_SYSTEM_VERSION.html#variable:CMAKE_SYSTEM_VERSION" title="CMAKE_SYSTEM_VERSION"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_SYSTEM_VERSION</span></code></a> tells the generator what version of |
| Windows CE to use. Currently version 8.0 (Windows Embedded Compact 2013) is |
| supported out of the box. Other versions may require one to set |
| <span class="target" id="index-0-variable:CMAKE_GENERATOR_TOOLSET"></span><a class="reference internal" href="../variable/CMAKE_GENERATOR_TOOLSET.html#variable:CMAKE_GENERATOR_TOOLSET" title="CMAKE_GENERATOR_TOOLSET"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_GENERATOR_TOOLSET</span></code></a> to the correct value.</p> |
| </div> |
| <div class="section" id="cross-compiling-for-windows-10-universal-applications"> |
| <h3><a class="toc-backref" href="#id16">Cross Compiling for Windows 10 Universal Applications</a><a class="headerlink" href="#cross-compiling-for-windows-10-universal-applications" title="Permalink to this headline">¶</a></h3> |
| <p>A toolchain file to configure a Visual Studio generator for a |
| Windows 10 Universal Application may look like this:</p> |
| <div class="highlight-cmake"><div class="highlight"><pre><span></span><span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_SYSTEM_NAME</span> <span class="s">WindowsStore</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_SYSTEM_VERSION</span> <span class="s">10.0</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| <p>A Windows 10 Universal Application targets both Windows Store and |
| Windows Phone. Specify the <span class="target" id="index-1-variable:CMAKE_SYSTEM_VERSION"></span><a class="reference internal" href="../variable/CMAKE_SYSTEM_VERSION.html#variable:CMAKE_SYSTEM_VERSION" title="CMAKE_SYSTEM_VERSION"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_SYSTEM_VERSION</span></code></a> variable |
| to be <code class="docutils literal"><span class="pre">10.0</span></code> to build with the latest available Windows 10 SDK. |
| Specify a more specific version (e.g. <code class="docutils literal"><span class="pre">10.0.10240.0</span></code> for RTM) |
| to build with the corresponding SDK.</p> |
| </div> |
| <div class="section" id="cross-compiling-for-windows-phone"> |
| <h3><a class="toc-backref" href="#id17">Cross Compiling for Windows Phone</a><a class="headerlink" href="#cross-compiling-for-windows-phone" title="Permalink to this headline">¶</a></h3> |
| <p>A toolchain file to configure a Visual Studio generator for |
| Windows Phone may look like this:</p> |
| <div class="highlight-cmake"><div class="highlight"><pre><span></span><span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_SYSTEM_NAME</span> <span class="s">WindowsPhone</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_SYSTEM_VERSION</span> <span class="s">8.1</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="cross-compiling-for-windows-store"> |
| <h3><a class="toc-backref" href="#id18">Cross Compiling for Windows Store</a><a class="headerlink" href="#cross-compiling-for-windows-store" title="Permalink to this headline">¶</a></h3> |
| <p>A toolchain file to configure a Visual Studio generator for |
| Windows Store may look like this:</p> |
| <div class="highlight-cmake"><div class="highlight"><pre><span></span><span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_SYSTEM_NAME</span> <span class="s">WindowsStore</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_SYSTEM_VERSION</span> <span class="s">8.1</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="cross-compiling-for-android"> |
| <span id="id1"></span><h3><a class="toc-backref" href="#id19">Cross Compiling for Android</a><a class="headerlink" href="#cross-compiling-for-android" title="Permalink to this headline">¶</a></h3> |
| <p>A toolchain file may configure cross-compiling for Android by setting the |
| <span class="target" id="index-3-variable:CMAKE_SYSTEM_NAME"></span><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"><span class="pre">CMAKE_SYSTEM_NAME</span></code></a> variable to <code class="docutils literal"><span class="pre">Android</span></code>. Further configuration |
| is specific to the Android development environment to be used.</p> |
| <p>For <a class="reference internal" href="cmake-generators.7.html#visual-studio-generators"><span class="std std-ref">Visual Studio Generators</span></a>, CMake expects <a class="reference internal" href="#cross-compiling-for-android-with-nvidia-nsight-tegra-visual-studio-edition"><span class="std std-ref">NVIDIA Nsight Tegra |
| Visual Studio Edition</span></a> to be installed. See that section for further |
| configuration details.</p> |
| <p>For <a class="reference internal" href="cmake-generators.7.html#makefile-generators"><span class="std std-ref">Makefile Generators</span></a> and the <span class="target" id="index-0-generator:Ninja"></span><a class="reference internal" href="../generator/Ninja.html#generator:Ninja" title="Ninja"><code class="xref cmake cmake-generator docutils literal"><span class="pre">Ninja</span></code></a> generator, |
| CMake expects one of these environments:</p> |
| <ul class="simple"> |
| <li><a class="reference internal" href="#cross-compiling-for-android-with-the-ndk"><span class="std std-ref">NDK</span></a></li> |
| <li><a class="reference internal" href="#cross-compiling-for-android-with-a-standalone-toolchain"><span class="std std-ref">Standalone Toolchain</span></a></li> |
| </ul> |
| <p>CMake uses the following steps to select one of the environments:</p> |
| <ul class="simple"> |
| <li>If the <span class="target" id="index-0-variable:CMAKE_ANDROID_NDK"></span><a class="reference internal" href="../variable/CMAKE_ANDROID_NDK.html#variable:CMAKE_ANDROID_NDK" title="CMAKE_ANDROID_NDK"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_ANDROID_NDK</span></code></a> variable is set, the NDK at the |
| specified location will be used.</li> |
| <li>Else, if the <span class="target" id="index-0-variable:CMAKE_ANDROID_STANDALONE_TOOLCHAIN"></span><a class="reference internal" href="../variable/CMAKE_ANDROID_STANDALONE_TOOLCHAIN.html#variable:CMAKE_ANDROID_STANDALONE_TOOLCHAIN" title="CMAKE_ANDROID_STANDALONE_TOOLCHAIN"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_ANDROID_STANDALONE_TOOLCHAIN</span></code></a> variable |
| is set, the Standalone Toolchain at the specified location will be used.</li> |
| <li>Else, if the <span class="target" id="index-1-variable:CMAKE_SYSROOT"></span><a class="reference internal" href="../variable/CMAKE_SYSROOT.html#variable:CMAKE_SYSROOT" title="CMAKE_SYSROOT"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_SYSROOT</span></code></a> variable is set to a directory |
| of the form <code class="docutils literal"><span class="pre"><ndk>/platforms/android-<api>/arch-<arch></span></code>, the <code class="docutils literal"><span class="pre"><ndk></span></code> |
| part will be used as the value of <span class="target" id="index-1-variable:CMAKE_ANDROID_NDK"></span><a class="reference internal" href="../variable/CMAKE_ANDROID_NDK.html#variable:CMAKE_ANDROID_NDK" title="CMAKE_ANDROID_NDK"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_ANDROID_NDK</span></code></a> and the |
| NDK will be used.</li> |
| <li>Else, if the <span class="target" id="index-2-variable:CMAKE_SYSROOT"></span><a class="reference internal" href="../variable/CMAKE_SYSROOT.html#variable:CMAKE_SYSROOT" title="CMAKE_SYSROOT"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_SYSROOT</span></code></a> variable is set to a directory of the |
| form <code class="docutils literal"><span class="pre"><standalone-toolchain>/sysroot</span></code>, the <code class="docutils literal"><span class="pre"><standalone-toolchain></span></code> part |
| will be used as the value of <span class="target" id="index-1-variable:CMAKE_ANDROID_STANDALONE_TOOLCHAIN"></span><a class="reference internal" href="../variable/CMAKE_ANDROID_STANDALONE_TOOLCHAIN.html#variable:CMAKE_ANDROID_STANDALONE_TOOLCHAIN" title="CMAKE_ANDROID_STANDALONE_TOOLCHAIN"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_ANDROID_STANDALONE_TOOLCHAIN</span></code></a> |
| and the Standalone Toolchain will be used.</li> |
| <li>Else, if a cmake variable <code class="docutils literal"><span class="pre">ANDROID_NDK</span></code> is set it will be used |
| as the value of <span class="target" id="index-2-variable:CMAKE_ANDROID_NDK"></span><a class="reference internal" href="../variable/CMAKE_ANDROID_NDK.html#variable:CMAKE_ANDROID_NDK" title="CMAKE_ANDROID_NDK"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_ANDROID_NDK</span></code></a>, and the NDK will be used.</li> |
| <li>Else, if a cmake variable <code class="docutils literal"><span class="pre">ANDROID_STANDALONE_TOOLCHAIN</span></code> is set, it will be |
| used as the value of <span class="target" id="index-2-variable:CMAKE_ANDROID_STANDALONE_TOOLCHAIN"></span><a class="reference internal" href="../variable/CMAKE_ANDROID_STANDALONE_TOOLCHAIN.html#variable:CMAKE_ANDROID_STANDALONE_TOOLCHAIN" title="CMAKE_ANDROID_STANDALONE_TOOLCHAIN"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_ANDROID_STANDALONE_TOOLCHAIN</span></code></a>, and the |
| Standalone Toolchain will be used.</li> |
| <li>Else, if an environment variable <code class="docutils literal"><span class="pre">ANDROID_NDK_ROOT</span></code> or |
| <code class="docutils literal"><span class="pre">ANDROID_NDK</span></code> is set, it will be used as the value of |
| <span class="target" id="index-3-variable:CMAKE_ANDROID_NDK"></span><a class="reference internal" href="../variable/CMAKE_ANDROID_NDK.html#variable:CMAKE_ANDROID_NDK" title="CMAKE_ANDROID_NDK"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_ANDROID_NDK</span></code></a>, and the NDK will be used.</li> |
| <li>Else, if an environment variable <code class="docutils literal"><span class="pre">ANDROID_STANDALONE_TOOLCHAIN</span></code> is |
| set then it will be used as the value of |
| <span class="target" id="index-3-variable:CMAKE_ANDROID_STANDALONE_TOOLCHAIN"></span><a class="reference internal" href="../variable/CMAKE_ANDROID_STANDALONE_TOOLCHAIN.html#variable:CMAKE_ANDROID_STANDALONE_TOOLCHAIN" title="CMAKE_ANDROID_STANDALONE_TOOLCHAIN"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_ANDROID_STANDALONE_TOOLCHAIN</span></code></a>, and the Standalone |
| Toolchain will be used.</li> |
| <li>Else, an error diagnostic will be issued that neither the NDK or |
| Standalone Toolchain can be found.</li> |
| </ul> |
| <div class="section" id="cross-compiling-for-android-with-the-ndk"> |
| <span id="id2"></span><h4><a class="toc-backref" href="#id20">Cross Compiling for Android with the NDK</a><a class="headerlink" href="#cross-compiling-for-android-with-the-ndk" title="Permalink to this headline">¶</a></h4> |
| <p>A toolchain file may configure <a class="reference internal" href="cmake-generators.7.html#makefile-generators"><span class="std std-ref">Makefile Generators</span></a> or the |
| <span class="target" id="index-1-generator:Ninja"></span><a class="reference internal" href="../generator/Ninja.html#generator:Ninja" title="Ninja"><code class="xref cmake cmake-generator docutils literal"><span class="pre">Ninja</span></code></a> generator to target Android for cross-compiling.</p> |
| <p>Configure use of an Android NDK with the following variables:</p> |
| <dl class="docutils"> |
| <dt><span class="target" id="index-4-variable:CMAKE_SYSTEM_NAME"></span><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"><span class="pre">CMAKE_SYSTEM_NAME</span></code></a></dt> |
| <dd>Set to <code class="docutils literal"><span class="pre">Android</span></code>. Must be specified to enable cross compiling |
| for Android.</dd> |
| <dt><span class="target" id="index-2-variable:CMAKE_SYSTEM_VERSION"></span><a class="reference internal" href="../variable/CMAKE_SYSTEM_VERSION.html#variable:CMAKE_SYSTEM_VERSION" title="CMAKE_SYSTEM_VERSION"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_SYSTEM_VERSION</span></code></a></dt> |
| <dd><p class="first">Set to the Android API level. If not specified, the value is |
| determined as follows:</p> |
| <ul class="last simple"> |
| <li>If the <span class="target" id="index-0-variable:CMAKE_ANDROID_API"></span><a class="reference internal" href="../variable/CMAKE_ANDROID_API.html#variable:CMAKE_ANDROID_API" title="CMAKE_ANDROID_API"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_ANDROID_API</span></code></a> variable is set, its value |
| is used as the API level.</li> |
| <li>If the <span class="target" id="index-3-variable:CMAKE_SYSROOT"></span><a class="reference internal" href="../variable/CMAKE_SYSROOT.html#variable:CMAKE_SYSROOT" title="CMAKE_SYSROOT"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_SYSROOT</span></code></a> variable is set, the API level is |
| detected from the NDK directory structure containing the sysroot.</li> |
| <li>Otherwise, the latest API level available in the NDK is used.</li> |
| </ul> |
| </dd> |
| <dt><span class="target" id="index-0-variable:CMAKE_ANDROID_ARCH_ABI"></span><a class="reference internal" href="../variable/CMAKE_ANDROID_ARCH_ABI.html#variable:CMAKE_ANDROID_ARCH_ABI" title="CMAKE_ANDROID_ARCH_ABI"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_ANDROID_ARCH_ABI</span></code></a></dt> |
| <dd>Set to the Android ABI (architecture). If not specified, this |
| variable will default to <code class="docutils literal"><span class="pre">armeabi</span></code>. |
| The <span class="target" id="index-0-variable:CMAKE_ANDROID_ARCH"></span><a class="reference internal" href="../variable/CMAKE_ANDROID_ARCH.html#variable:CMAKE_ANDROID_ARCH" title="CMAKE_ANDROID_ARCH"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_ANDROID_ARCH</span></code></a> variable will be computed |
| from <code class="docutils literal"><span class="pre">CMAKE_ANDROID_ARCH_ABI</span></code> automatically. |
| Also see the <span class="target" id="index-0-variable:CMAKE_ANDROID_ARM_MODE"></span><a class="reference internal" href="../variable/CMAKE_ANDROID_ARM_MODE.html#variable:CMAKE_ANDROID_ARM_MODE" title="CMAKE_ANDROID_ARM_MODE"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_ANDROID_ARM_MODE</span></code></a> and |
| <span class="target" id="index-0-variable:CMAKE_ANDROID_ARM_NEON"></span><a class="reference internal" href="../variable/CMAKE_ANDROID_ARM_NEON.html#variable:CMAKE_ANDROID_ARM_NEON" title="CMAKE_ANDROID_ARM_NEON"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_ANDROID_ARM_NEON</span></code></a> variables.</dd> |
| <dt><span class="target" id="index-4-variable:CMAKE_ANDROID_NDK"></span><a class="reference internal" href="../variable/CMAKE_ANDROID_NDK.html#variable:CMAKE_ANDROID_NDK" title="CMAKE_ANDROID_NDK"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_ANDROID_NDK</span></code></a></dt> |
| <dd>Set to the absolute path to the Android NDK root directory. |
| A <code class="docutils literal"><span class="pre">${CMAKE_ANDROID_NDK}/platforms</span></code> directory must exist. |
| If not specified, a default for this variable will be chosen |
| as specified <a class="reference internal" href="#cross-compiling-for-android"><span class="std std-ref">above</span></a>.</dd> |
| <dt><span class="target" id="index-0-variable:CMAKE_ANDROID_NDK_TOOLCHAIN_VERSION"></span><a class="reference internal" href="../variable/CMAKE_ANDROID_NDK_TOOLCHAIN_VERSION.html#variable:CMAKE_ANDROID_NDK_TOOLCHAIN_VERSION" title="CMAKE_ANDROID_NDK_TOOLCHAIN_VERSION"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_ANDROID_NDK_TOOLCHAIN_VERSION</span></code></a></dt> |
| <dd>Set to the version of the NDK toolchain to be selected as the compiler. |
| If not specified, the default will be the latest available GCC toolchain.</dd> |
| <dt><span class="target" id="index-0-variable:CMAKE_ANDROID_STL_TYPE"></span><a class="reference internal" href="../variable/CMAKE_ANDROID_STL_TYPE.html#variable:CMAKE_ANDROID_STL_TYPE" title="CMAKE_ANDROID_STL_TYPE"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_ANDROID_STL_TYPE</span></code></a></dt> |
| <dd>Set to specify which C++ standard library to use. If not specified, |
| a default will be selected as described in the variable documentation.</dd> |
| </dl> |
| <p>The following variables will be computed and provided automatically:</p> |
| <dl class="docutils"> |
| <dt><span class="target" id="index-0-variable:CMAKE_<LANG>_ANDROID_TOOLCHAIN_PREFIX"></span><a class="reference internal" href="../variable/CMAKE_LANG_ANDROID_TOOLCHAIN_PREFIX.html#variable:CMAKE_<LANG>_ANDROID_TOOLCHAIN_PREFIX" title="CMAKE_<LANG>_ANDROID_TOOLCHAIN_PREFIX"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_<LANG>_ANDROID_TOOLCHAIN_PREFIX</span></code></a></dt> |
| <dd>The absolute path prefix to the binutils in the NDK toolchain.</dd> |
| <dt><span class="target" id="index-0-variable:CMAKE_<LANG>_ANDROID_TOOLCHAIN_SUFFIX"></span><a class="reference internal" href="../variable/CMAKE_LANG_ANDROID_TOOLCHAIN_SUFFIX.html#variable:CMAKE_<LANG>_ANDROID_TOOLCHAIN_SUFFIX" title="CMAKE_<LANG>_ANDROID_TOOLCHAIN_SUFFIX"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_<LANG>_ANDROID_TOOLCHAIN_SUFFIX</span></code></a></dt> |
| <dd>The host platform suffix of the binutils in the NDK toolchain.</dd> |
| </dl> |
| <p>For example, a toolchain file might contain:</p> |
| <div class="highlight-cmake"><div class="highlight"><pre><span></span><span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_SYSTEM_NAME</span> <span class="s">Android</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_SYSTEM_VERSION</span> <span class="s">21</span><span class="p">)</span> <span class="c"># API level</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_ANDROID_ARCH_ABI</span> <span class="s">arm64-v8a</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_ANDROID_NDK</span> <span class="s">/path/to/android-ndk</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_ANDROID_STL_TYPE</span> <span class="s">gnustl_static</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| <p>Alternatively one may specify the values without a toolchain file:</p> |
| <div class="highlight-console"><div class="highlight"><pre><span></span><span class="gp">$</span> cmake ../src <span class="se">\</span> |
| -DCMAKE_SYSTEM_NAME<span class="o">=</span>Android <span class="se">\</span> |
| -DCMAKE_SYSTEM_VERSION<span class="o">=</span><span class="m">21</span> <span class="se">\</span> |
| -DCMAKE_ANDROID_ARCH_ABI<span class="o">=</span>arm64-v8a <span class="se">\</span> |
| -DCMAKE_ANDROID_NDK<span class="o">=</span>/path/to/android-ndk <span class="se">\</span> |
| -DCMAKE_ANDROID_STL_TYPE<span class="o">=</span>gnustl_static |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="cross-compiling-for-android-with-a-standalone-toolchain"> |
| <span id="id3"></span><h4><a class="toc-backref" href="#id21">Cross Compiling for Android with a Standalone Toolchain</a><a class="headerlink" href="#cross-compiling-for-android-with-a-standalone-toolchain" title="Permalink to this headline">¶</a></h4> |
| <p>A toolchain file may configure <a class="reference internal" href="cmake-generators.7.html#makefile-generators"><span class="std std-ref">Makefile Generators</span></a> or the |
| <span class="target" id="index-2-generator:Ninja"></span><a class="reference internal" href="../generator/Ninja.html#generator:Ninja" title="Ninja"><code class="xref cmake cmake-generator docutils literal"><span class="pre">Ninja</span></code></a> generator to target Android for cross-compiling |
| using a standalone toolchain.</p> |
| <p>Configure use of an Android standalone toolchain with the following variables:</p> |
| <dl class="docutils"> |
| <dt><span class="target" id="index-5-variable:CMAKE_SYSTEM_NAME"></span><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"><span class="pre">CMAKE_SYSTEM_NAME</span></code></a></dt> |
| <dd>Set to <code class="docutils literal"><span class="pre">Android</span></code>. Must be specified to enable cross compiling |
| for Android.</dd> |
| <dt><span class="target" id="index-4-variable:CMAKE_ANDROID_STANDALONE_TOOLCHAIN"></span><a class="reference internal" href="../variable/CMAKE_ANDROID_STANDALONE_TOOLCHAIN.html#variable:CMAKE_ANDROID_STANDALONE_TOOLCHAIN" title="CMAKE_ANDROID_STANDALONE_TOOLCHAIN"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_ANDROID_STANDALONE_TOOLCHAIN</span></code></a></dt> |
| <dd>Set to the absolute path to the standalone toolchain root directory. |
| A <code class="docutils literal"><span class="pre">${CMAKE_ANDROID_STANDALONE_TOOLCHAIN}/sysroot</span></code> directory |
| must exist. |
| If not specified, a default for this variable will be chosen |
| as specified <a class="reference internal" href="#cross-compiling-for-android"><span class="std std-ref">above</span></a>.</dd> |
| <dt><span class="target" id="index-1-variable:CMAKE_ANDROID_ARM_MODE"></span><a class="reference internal" href="../variable/CMAKE_ANDROID_ARM_MODE.html#variable:CMAKE_ANDROID_ARM_MODE" title="CMAKE_ANDROID_ARM_MODE"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_ANDROID_ARM_MODE</span></code></a></dt> |
| <dd>When the standalone toolchain targets ARM, optionally set this to <code class="docutils literal"><span class="pre">ON</span></code> |
| to target 32-bit ARM instead of 16-bit Thumb. |
| See variable documentation for details.</dd> |
| <dt><span class="target" id="index-1-variable:CMAKE_ANDROID_ARM_NEON"></span><a class="reference internal" href="../variable/CMAKE_ANDROID_ARM_NEON.html#variable:CMAKE_ANDROID_ARM_NEON" title="CMAKE_ANDROID_ARM_NEON"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_ANDROID_ARM_NEON</span></code></a></dt> |
| <dd>When the standalone toolchain targets ARM v7, optionally set thisto <code class="docutils literal"><span class="pre">ON</span></code> |
| to target ARM NEON devices. See variable documentation for details.</dd> |
| </dl> |
| <p>The following variables will be computed and provided automatically:</p> |
| <dl class="docutils"> |
| <dt><span class="target" id="index-3-variable:CMAKE_SYSTEM_VERSION"></span><a class="reference internal" href="../variable/CMAKE_SYSTEM_VERSION.html#variable:CMAKE_SYSTEM_VERSION" title="CMAKE_SYSTEM_VERSION"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_SYSTEM_VERSION</span></code></a></dt> |
| <dd>The Android API level detected from the standalone toolchain.</dd> |
| <dt><span class="target" id="index-1-variable:CMAKE_ANDROID_ARCH_ABI"></span><a class="reference internal" href="../variable/CMAKE_ANDROID_ARCH_ABI.html#variable:CMAKE_ANDROID_ARCH_ABI" title="CMAKE_ANDROID_ARCH_ABI"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_ANDROID_ARCH_ABI</span></code></a></dt> |
| <dd>The Android ABI detected from the standalone toolchain.</dd> |
| <dt><span class="target" id="index-1-variable:CMAKE_<LANG>_ANDROID_TOOLCHAIN_PREFIX"></span><a class="reference internal" href="../variable/CMAKE_LANG_ANDROID_TOOLCHAIN_PREFIX.html#variable:CMAKE_<LANG>_ANDROID_TOOLCHAIN_PREFIX" title="CMAKE_<LANG>_ANDROID_TOOLCHAIN_PREFIX"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_<LANG>_ANDROID_TOOLCHAIN_PREFIX</span></code></a></dt> |
| <dd>The absolute path prefix to the binutils in the standalone toolchain.</dd> |
| <dt><span class="target" id="index-1-variable:CMAKE_<LANG>_ANDROID_TOOLCHAIN_SUFFIX"></span><a class="reference internal" href="../variable/CMAKE_LANG_ANDROID_TOOLCHAIN_SUFFIX.html#variable:CMAKE_<LANG>_ANDROID_TOOLCHAIN_SUFFIX" title="CMAKE_<LANG>_ANDROID_TOOLCHAIN_SUFFIX"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_<LANG>_ANDROID_TOOLCHAIN_SUFFIX</span></code></a></dt> |
| <dd>The host platform suffix of the binutils in the standalone toolchain.</dd> |
| </dl> |
| <p>For example, a toolchain file might contain:</p> |
| <div class="highlight-cmake"><div class="highlight"><pre><span></span><span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_SYSTEM_NAME</span> <span class="s">Android</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_ANDROID_STANDALONE_TOOLCHAIN</span> <span class="s">/path/to/android-toolchain</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| <p>Alternatively one may specify the values without a toolchain file:</p> |
| <div class="highlight-console"><div class="highlight"><pre><span></span><span class="gp">$</span> cmake ../src <span class="se">\</span> |
| -DCMAKE_SYSTEM_NAME<span class="o">=</span>Android <span class="se">\</span> |
| -DCMAKE_ANDROID_STANDALONE_TOOLCHAIN<span class="o">=</span>/path/to/android-toolchain |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="cross-compiling-for-android-with-nvidia-nsight-tegra-visual-studio-edition"> |
| <span id="id4"></span><h4><a class="toc-backref" href="#id22">Cross Compiling for Android with NVIDIA Nsight Tegra Visual Studio Edition</a><a class="headerlink" href="#cross-compiling-for-android-with-nvidia-nsight-tegra-visual-studio-edition" title="Permalink to this headline">¶</a></h4> |
| <p>A toolchain file to configure one of the <a class="reference internal" href="cmake-generators.7.html#visual-studio-generators"><span class="std std-ref">Visual Studio Generators</span></a> |
| to build using NVIDIA Nsight Tegra targeting Android may look like this:</p> |
| <div class="highlight-cmake"><div class="highlight"><pre><span></span><span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_SYSTEM_NAME</span> <span class="s">Android</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| <p>The <span class="target" id="index-1-variable:CMAKE_GENERATOR_TOOLSET"></span><a class="reference internal" href="../variable/CMAKE_GENERATOR_TOOLSET.html#variable:CMAKE_GENERATOR_TOOLSET" title="CMAKE_GENERATOR_TOOLSET"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_GENERATOR_TOOLSET</span></code></a> may be set to select |
| the Nsight Tegra “Toolchain Version” value.</p> |
| <p>See also target properties:</p> |
| <ul class="simple"> |
| <li><span class="target" id="index-0-prop_tgt:ANDROID_ANT_ADDITIONAL_OPTIONS"></span><a class="reference internal" href="../prop_tgt/ANDROID_ANT_ADDITIONAL_OPTIONS.html#prop_tgt:ANDROID_ANT_ADDITIONAL_OPTIONS" title="ANDROID_ANT_ADDITIONAL_OPTIONS"><code class="xref cmake cmake-prop_tgt docutils literal"><span class="pre">ANDROID_ANT_ADDITIONAL_OPTIONS</span></code></a></li> |
| <li><span class="target" id="index-0-prop_tgt:ANDROID_API_MIN"></span><a class="reference internal" href="../prop_tgt/ANDROID_API_MIN.html#prop_tgt:ANDROID_API_MIN" title="ANDROID_API_MIN"><code class="xref cmake cmake-prop_tgt docutils literal"><span class="pre">ANDROID_API_MIN</span></code></a></li> |
| <li><span class="target" id="index-0-prop_tgt:ANDROID_API"></span><a class="reference internal" href="../prop_tgt/ANDROID_API.html#prop_tgt:ANDROID_API" title="ANDROID_API"><code class="xref cmake cmake-prop_tgt docutils literal"><span class="pre">ANDROID_API</span></code></a></li> |
| <li><span class="target" id="index-0-prop_tgt:ANDROID_ARCH"></span><a class="reference internal" href="../prop_tgt/ANDROID_ARCH.html#prop_tgt:ANDROID_ARCH" title="ANDROID_ARCH"><code class="xref cmake cmake-prop_tgt docutils literal"><span class="pre">ANDROID_ARCH</span></code></a></li> |
| <li><span class="target" id="index-0-prop_tgt:ANDROID_ASSETS_DIRECTORIES"></span><a class="reference internal" href="../prop_tgt/ANDROID_ASSETS_DIRECTORIES.html#prop_tgt:ANDROID_ASSETS_DIRECTORIES" title="ANDROID_ASSETS_DIRECTORIES"><code class="xref cmake cmake-prop_tgt docutils literal"><span class="pre">ANDROID_ASSETS_DIRECTORIES</span></code></a></li> |
| <li><span class="target" id="index-0-prop_tgt:ANDROID_GUI"></span><a class="reference internal" href="../prop_tgt/ANDROID_GUI.html#prop_tgt:ANDROID_GUI" title="ANDROID_GUI"><code class="xref cmake cmake-prop_tgt docutils literal"><span class="pre">ANDROID_GUI</span></code></a></li> |
| <li><span class="target" id="index-0-prop_tgt:ANDROID_JAR_DEPENDENCIES"></span><a class="reference internal" href="../prop_tgt/ANDROID_JAR_DEPENDENCIES.html#prop_tgt:ANDROID_JAR_DEPENDENCIES" title="ANDROID_JAR_DEPENDENCIES"><code class="xref cmake cmake-prop_tgt docutils literal"><span class="pre">ANDROID_JAR_DEPENDENCIES</span></code></a></li> |
| <li><span class="target" id="index-0-prop_tgt:ANDROID_JAR_DIRECTORIES"></span><a class="reference internal" href="../prop_tgt/ANDROID_JAR_DIRECTORIES.html#prop_tgt:ANDROID_JAR_DIRECTORIES" title="ANDROID_JAR_DIRECTORIES"><code class="xref cmake cmake-prop_tgt docutils literal"><span class="pre">ANDROID_JAR_DIRECTORIES</span></code></a></li> |
| <li><span class="target" id="index-0-prop_tgt:ANDROID_JAVA_SOURCE_DIR"></span><a class="reference internal" href="../prop_tgt/ANDROID_JAVA_SOURCE_DIR.html#prop_tgt:ANDROID_JAVA_SOURCE_DIR" title="ANDROID_JAVA_SOURCE_DIR"><code class="xref cmake cmake-prop_tgt docutils literal"><span class="pre">ANDROID_JAVA_SOURCE_DIR</span></code></a></li> |
| <li><span class="target" id="index-0-prop_tgt:ANDROID_NATIVE_LIB_DEPENDENCIES"></span><a class="reference internal" href="../prop_tgt/ANDROID_NATIVE_LIB_DEPENDENCIES.html#prop_tgt:ANDROID_NATIVE_LIB_DEPENDENCIES" title="ANDROID_NATIVE_LIB_DEPENDENCIES"><code class="xref cmake cmake-prop_tgt docutils literal"><span class="pre">ANDROID_NATIVE_LIB_DEPENDENCIES</span></code></a></li> |
| <li><span class="target" id="index-0-prop_tgt:ANDROID_NATIVE_LIB_DIRECTORIES"></span><a class="reference internal" href="../prop_tgt/ANDROID_NATIVE_LIB_DIRECTORIES.html#prop_tgt:ANDROID_NATIVE_LIB_DIRECTORIES" title="ANDROID_NATIVE_LIB_DIRECTORIES"><code class="xref cmake cmake-prop_tgt docutils literal"><span class="pre">ANDROID_NATIVE_LIB_DIRECTORIES</span></code></a></li> |
| <li><span class="target" id="index-0-prop_tgt:ANDROID_PROCESS_MAX"></span><a class="reference internal" href="../prop_tgt/ANDROID_PROCESS_MAX.html#prop_tgt:ANDROID_PROCESS_MAX" title="ANDROID_PROCESS_MAX"><code class="xref cmake cmake-prop_tgt docutils literal"><span class="pre">ANDROID_PROCESS_MAX</span></code></a></li> |
| <li><span class="target" id="index-0-prop_tgt:ANDROID_PROGUARD_CONFIG_PATH"></span><a class="reference internal" href="../prop_tgt/ANDROID_PROGUARD_CONFIG_PATH.html#prop_tgt:ANDROID_PROGUARD_CONFIG_PATH" title="ANDROID_PROGUARD_CONFIG_PATH"><code class="xref cmake cmake-prop_tgt docutils literal"><span class="pre">ANDROID_PROGUARD_CONFIG_PATH</span></code></a></li> |
| <li><span class="target" id="index-0-prop_tgt:ANDROID_PROGUARD"></span><a class="reference internal" href="../prop_tgt/ANDROID_PROGUARD.html#prop_tgt:ANDROID_PROGUARD" title="ANDROID_PROGUARD"><code class="xref cmake cmake-prop_tgt docutils literal"><span class="pre">ANDROID_PROGUARD</span></code></a></li> |
| <li><span class="target" id="index-0-prop_tgt:ANDROID_SECURE_PROPS_PATH"></span><a class="reference internal" href="../prop_tgt/ANDROID_SECURE_PROPS_PATH.html#prop_tgt:ANDROID_SECURE_PROPS_PATH" title="ANDROID_SECURE_PROPS_PATH"><code class="xref cmake cmake-prop_tgt docutils literal"><span class="pre">ANDROID_SECURE_PROPS_PATH</span></code></a></li> |
| <li><span class="target" id="index-0-prop_tgt:ANDROID_SKIP_ANT_STEP"></span><a class="reference internal" href="../prop_tgt/ANDROID_SKIP_ANT_STEP.html#prop_tgt:ANDROID_SKIP_ANT_STEP" title="ANDROID_SKIP_ANT_STEP"><code class="xref cmake cmake-prop_tgt docutils literal"><span class="pre">ANDROID_SKIP_ANT_STEP</span></code></a></li> |
| <li><span class="target" id="index-0-prop_tgt:ANDROID_STL_TYPE"></span><a class="reference internal" href="../prop_tgt/ANDROID_STL_TYPE.html#prop_tgt:ANDROID_STL_TYPE" title="ANDROID_STL_TYPE"><code class="xref cmake cmake-prop_tgt docutils literal"><span class="pre">ANDROID_STL_TYPE</span></code></a></li> |
| </ul> |
| </div> |
| </div> |
| </div> |
| </div> |
| |
| |
| </div> |
| </div> |
| </div> |
| <div class="sphinxsidebar" role="navigation" aria-label="main navigation"> |
| <div class="sphinxsidebarwrapper"> |
| <h3><a href="../index.html">Table Of Contents</a></h3> |
| <ul> |
| <li><a class="reference internal" href="#">cmake-toolchains(7)</a><ul> |
| <li><a class="reference internal" href="#introduction">Introduction</a></li> |
| <li><a class="reference internal" href="#languages">Languages</a></li> |
| <li><a class="reference internal" href="#variables-and-properties">Variables and Properties</a></li> |
| <li><a class="reference internal" href="#toolchain-features">Toolchain Features</a></li> |
| <li><a class="reference internal" href="#cross-compiling">Cross Compiling</a><ul> |
| <li><a class="reference internal" href="#cross-compiling-for-linux">Cross Compiling for Linux</a></li> |
| <li><a class="reference internal" href="#cross-compiling-for-the-cray-linux-environment">Cross Compiling for the Cray Linux Environment</a></li> |
| <li><a class="reference internal" href="#cross-compiling-using-clang">Cross Compiling using Clang</a></li> |
| <li><a class="reference internal" href="#cross-compiling-for-qnx">Cross Compiling for QNX</a></li> |
| <li><a class="reference internal" href="#cross-compiling-for-windows-ce">Cross Compiling for Windows CE</a></li> |
| <li><a class="reference internal" href="#cross-compiling-for-windows-10-universal-applications">Cross Compiling for Windows 10 Universal Applications</a></li> |
| <li><a class="reference internal" href="#cross-compiling-for-windows-phone">Cross Compiling for Windows Phone</a></li> |
| <li><a class="reference internal" href="#cross-compiling-for-windows-store">Cross Compiling for Windows Store</a></li> |
| <li><a class="reference internal" href="#cross-compiling-for-android">Cross Compiling for Android</a><ul> |
| <li><a class="reference internal" href="#cross-compiling-for-android-with-the-ndk">Cross Compiling for Android with the NDK</a></li> |
| <li><a class="reference internal" href="#cross-compiling-for-android-with-a-standalone-toolchain">Cross Compiling for Android with a Standalone Toolchain</a></li> |
| <li><a class="reference internal" href="#cross-compiling-for-android-with-nvidia-nsight-tegra-visual-studio-edition">Cross Compiling for Android with NVIDIA Nsight Tegra Visual Studio Edition</a></li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| |
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