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| <div class="section" id="c-example-using-cmake"> |
| <span id="cpp-cmake"></span><h1>C++ Example using CMake<a class="headerlink" href="#c-example-using-cmake" title="Permalink to this headline">ΒΆ</a></h1> |
| <p>In some situations, developers intend to implement software using the NuttX platform in |
| a previously set hardware and configuration where it is not possible or allowed to make |
| changes. In such situations, less contact with the operating source tree is better, where |
| it is only used for the application.</p> |
| <p>Some approaches are possible to do that today:</p> |
| <ul class="simple"> |
| <li><p><a class="reference external" href="https://cwiki.apache.org/confluence/display/NUTTX/Building+NuttX+with+Applications+Outside+of+the+Source+Tree">https://cwiki.apache.org/confluence/display/NUTTX/Building+NuttX+with+Applications+Outside+of+the+Source+Tree</a></p></li> |
| <li><p><a class="reference external" href="https://www.programmersought.com/article/61604062421/">https://www.programmersought.com/article/61604062421/</a></p></li> |
| </ul> |
| <p>We have been seen the increase of the use of C++ language in embedded systems application. And |
| CMake (<a class="reference external" href="https://www.cmake.org">https://www.cmake.org</a>) is the preferred build system used to build C++ projects. NuttX |
| support C++ based projects.</p> |
| <p>Using the βbuild as a libraryβ procedure of NuttX, it is possible to build NuttX |
| applications using C++ language and also the cmake build tool.</p> |
| <p>This document will show how to reimplement the hellocpp project using this cmake.</p> |
| <div class="section" id="preparation"> |
| <h2>Preparation<a class="headerlink" href="#preparation" title="Permalink to this headline">ΒΆ</a></h2> |
| <ol class="arabic"> |
| <li><p>Base NuttX compilation changes</p> |
| <blockquote> |
| <div><p>For this example, load the configuration βstm32f4discovery:testlibcxxβ for building</p> |
| <div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp">$ </span><span class="nb">cd</span> nuttx |
| <span class="gp">$ </span>./tools/configure.sh stm32f4discovery:testlibcxx |
| </pre></div> |
| </div> |
| <p>In menuconfig, the main points to be changed on a typical NuttX configuration are the following:</p> |
| <ul class="simple"> |
| <li><p>Set RTOS Features -> Tasks and Scheduling -> Application entry point to βhellocpp_mainβ</p></li> |
| <li><p>Build NuttX and generate the export</p></li> |
| </ul> |
| <div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp">$ </span>make <span class="nb">export</span> |
| </pre></div> |
| </div> |
| </div></blockquote> |
| </li> |
| </ol> |
| </div> |
| <div class="section" id="creating-the-project"> |
| <h2>Creating the project<a class="headerlink" href="#creating-the-project" title="Permalink to this headline">ΒΆ</a></h2> |
| <ol class="arabic"> |
| <li><p>Create your project file structure</p> |
| <blockquote> |
| <div><p>The project structure is organized as follow:</p> |
| <div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="go">hellocpp/</span> |
| <span class="go">hellocpp/CMakeLists.txt</span> |
| <span class="go">hellocpp/cmake/stm32f4discovery.cmake</span> |
| <span class="go">hellocpp/nuttx-export-10.0.1/</span> |
| <span class="go">hellocpp/src/CMakeLists.txt</span> |
| <span class="go">hellocpp/src/main.cpp</span> |
| <span class="go">hellocpp/src/HelloWorld.h</span> |
| <span class="go">hellocpp/src/HelloWorld.cpp</span> |
| </pre></div> |
| </div> |
| <p>The directory βnuttx-export-10.0.1β is the unzipped content from the file created during |
| make export procedure done before.</p> |
| </div></blockquote> |
| </li> |
| <li><p>File contents</p></li> |
| </ol> |
| <ul class="simple"> |
| <li><p>hellocpp/CMakeLists.txt</p></li> |
| </ul> |
| <div class="highlight-cmake notranslate"><div class="highlight"><pre><span></span><span class="nb">cmake_minimum_required</span><span class="p">(</span><span class="s">VERSION</span> <span class="s">3.2...3.15</span><span class="p">)</span> |
| |
| <span class="nb">project</span><span class="p">(</span><span class="s">HelloCpp</span> |
| <span class="s">VERSION</span> <span class="s">1.0</span> |
| <span class="s">DESCRIPTION</span> <span class="s2">"Hello world C++ NuttX"</span> |
| <span class="p">)</span> |
| |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_CXX_STANDARD</span> <span class="s">17</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_CXX_STANDARD_REQUIRED</span> <span class="s">ON</span><span class="p">)</span> |
| <span class="c"># set(CMAKE_CXX_EXTENSIONS OFF)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_C_STANDARD</span> <span class="s">99</span><span class="p">)</span> |
| |
| <span class="nb">set</span><span class="p">(</span><span class="s">NUTTX_PATH</span> <span class="s2">"${CMAKE_SOURCE_DIR}/nuttx-export-10.0.1"</span><span class="p">)</span> |
| |
| <span class="nb">include</span><span class="p">(</span><span class="s">cmake/stm32f4discovery.cmake</span><span class="p">)</span> |
| |
| <span class="nb">set</span><span class="p">(</span><span class="s">AC_COMMON_FLAGS</span> <span class="s2">"${AC_COMMON_FLAGS} -fno-builtin -Wall -Wshadow -Wundef -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer -Os"</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">AC_COMMON_FLAGS</span> <span class="s2">"${AC_COMMON_FLAGS} -D_DEBUG -D_LIBCPP_BUILD_STATIC -D_LIBCPP_NO_EXCEPTIONS "</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">AC_COMMON_FLAGS</span> <span class="s2">"${AC_COMMON_FLAGS} -fno-exceptions -fcheck-new -fno-rtti -pedantic "</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">AC_COMMON_FLAGS</span> <span class="s2">"${AC_COMMON_FLAGS} -nostdinc++"</span><span class="p">)</span> |
| |
| <span class="nb">set</span><span class="p">(</span><span class="s">AC_DEFINES</span> <span class="s2">"${AC_DEFINES} -DCONFIG_WCHAR_BUILTIN"</span><span class="p">)</span> |
| |
| <span class="nb">include_directories</span><span class="p">(</span> |
| <span class="s">src</span> |
| <span class="o">${</span><span class="nv">NUTTX_PATH</span><span class="o">}</span><span class="s">/include</span> |
| <span class="o">${</span><span class="nv">NUTTX_PATH</span><span class="o">}</span><span class="s">/include/libcxx</span> |
| <span class="o">${</span><span class="nv">NUTTX_PATH</span><span class="o">}</span><span class="s">/arch/chip</span> |
| <span class="p">)</span> |
| |
| <span class="nb">set</span><span class="p">(</span><span class="s">EXE_NAME</span> <span class="s">hellocpp</span><span class="p">)</span> |
| |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_CXX_FLAGS</span> <span class="s2">"${AC_HW_FLAGS} ${AC_DEFINES} ${AC_COMMON_FLAGS} ${AC_CXX_EXTRA_FLAGS}"</span><span class="p">)</span> |
| <span class="nb">if</span> <span class="p">(</span><span class="s">PARAM_DEBUG</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_CXX_FLAGS</span> <span class="s2">"${CMAKE_CXX_FLAGS} -g"</span><span class="p">)</span> |
| <span class="nb">endif</span><span class="p">()</span> |
| |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_SKIP_RPATH</span> <span class="s">ON</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_CXX_LINK_EXECUTABLE</span> <span class="s2">"${CMAKE_LINKER} ${AC_LINKER_FLAGS} -o ${EXE_NAME}.elf <OBJECTS> <LINK_LIBRARIES>"</span><span class="p">)</span> |
| |
| <span class="nb">set</span><span class="p">(</span><span class="s">BUILD_SHARED_LIBS</span> <span class="s">OFF</span><span class="p">)</span> |
| |
| <span class="nb">add_subdirectory</span><span class="p">(</span><span class="s">src</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| <ul class="simple"> |
| <li><p>hellocpp/cmake/stm32f4discovery.cmake</p></li> |
| </ul> |
| <div class="highlight-cmake notranslate"><div class="highlight"><pre><span></span><span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_SYSTEM_NAME</span> <span class="s">Generic</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_SYSTEM_PROCESSOR</span> <span class="s">arm</span><span class="p">)</span> |
| |
| <span class="nb">set</span><span class="p">(</span><span class="s">MCU_LINKER_SCRIPT</span> <span class="s2">"${NUTTX_PATH}/scripts/ld.script"</span><span class="p">)</span> |
| |
| <span class="nb">set</span><span class="p">(</span><span class="s">COMPILER_PREFIX</span> <span class="s">arm-none-eabi-</span><span class="p">)</span> |
| |
| <span class="c"># cmake-format: off</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_C_COMPILER</span> <span class="o">${</span><span class="nv">COMPILER_PREFIX</span><span class="o">}</span><span class="s">gcc</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_CXX_COMPILER</span> <span class="o">${</span><span class="nv">COMPILER_PREFIX</span><span class="o">}</span><span class="s">g++</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_AR</span> <span class="o">${</span><span class="nv">COMPILER_PREFIX</span><span class="o">}</span><span class="s">ar</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_RANLIB</span> <span class="o">${</span><span class="nv">COMPILER_PREFIX</span><span class="o">}</span><span class="s">ranlib</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_LINKER</span> <span class="o">${</span><span class="nv">COMPILER_PREFIX</span><span class="o">}</span><span class="s">ld</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_ASM_COMPILER</span> <span class="o">${</span><span class="nv">COMPILER_PREFIX</span><span class="o">}</span><span class="s">gcc</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_OBJCOPY</span> <span class="o">${</span><span class="nv">COMPILER_PREFIX</span><span class="o">}</span><span class="s">objcopy</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_OBJDUMP</span> <span class="o">${</span><span class="nv">COMPILER_PREFIX</span><span class="o">}</span><span class="s">objdump</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_SIZE</span> <span class="o">${</span><span class="nv">COMPILER_PREFIX</span><span class="o">}</span><span class="s">size</span><span class="p">)</span> |
| |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_FIND_ROOT_PATH_MODE_PROGRAM</span> <span class="s">NEVER</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_FIND_ROOT_PATH_MODE_LIBRARY</span> <span class="s">ONLY</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_FIND_ROOT_PATH_MODE_INCLUDE</span> <span class="s">ONLY</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_FIND_ROOT_PATH_MODE_PACKAGE</span> <span class="s">ONLY</span><span class="p">)</span> |
| |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_TRY_COMPILE_TARGET_TYPE</span> <span class="s">STATIC_LIBRARY</span><span class="p">)</span> |
| |
| <span class="nb">set</span><span class="p">(</span><span class="s">AC_HW_FLAGS</span> <span class="s2">"-mcpu=cortex-m4 -mthumb -mfloat-abi=soft "</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">AC_HW_FLAGS</span> <span class="s2">"${AC_HW_FLAGS} -isystem ${NUTTX_PATH}/include"</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">AC_HW_FLAGS</span> <span class="s2">"${AC_HW_FLAGS} -pipe -D__NuttX__"</span><span class="p">)</span> |
| |
| <span class="nb">set</span><span class="p">(</span><span class="s">AC_LINKER_FLAGS</span> <span class="s2">"--entry=__start -nostartfiles -nodefaultlibs -T${MCU_LINKER_SCRIPT}"</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| <ul class="simple"> |
| <li><p>hellocpp/src/CMakeLists.txt</p></li> |
| </ul> |
| <div class="highlight-cmake notranslate"><div class="highlight"><pre><span></span><span class="nb">set</span><span class="p">(</span><span class="s">HEADER_FILES</span> |
| <span class="s">HelloWorld.h</span> |
| <span class="p">)</span> |
| |
| <span class="nb">set</span><span class="p">(</span><span class="s">SOURCE_FILES</span> |
| <span class="s">HelloWorld.cpp</span> |
| <span class="p">)</span> |
| |
| <span class="nb">link_directories</span><span class="p">(</span><span class="o">${</span><span class="nv">EXE_NAME</span><span class="o">}</span> <span class="o">${</span><span class="nv">NUTTX_PATH</span><span class="o">}</span><span class="s">/libs</span><span class="p">)</span> |
| |
| <span class="nb">add_executable</span><span class="p">(</span><span class="o">${</span><span class="nv">EXE_NAME</span><span class="o">}</span> <span class="o">${</span><span class="nv">SOURCE_FILES</span><span class="o">}</span> <span class="s">main.cpp</span> <span class="o">${</span><span class="nv">HEADER_FILES</span><span class="o">}</span><span class="p">)</span> |
| |
| <span class="nb">add_custom_command</span><span class="p">(</span> |
| <span class="s">TARGET</span> <span class="o">${</span><span class="nv">EXE_NAME</span><span class="o">}</span> |
| <span class="s">POST_BUILD</span> |
| <span class="s">COMMAND</span> <span class="o">${</span><span class="nv">CMAKE_OBJCOPY</span><span class="o">}</span> <span class="s">ARGS</span> <span class="s">-S</span> <span class="s">-O</span> <span class="s">binary</span> <span class="o">${</span><span class="nv">CMAKE_BINARY_DIR</span><span class="o">}</span><span class="s">/</span><span class="o">${</span><span class="nv">EXE_NAME</span><span class="o">}</span><span class="s">.elf</span> <span class="o">${</span><span class="nv">CMAKE_BINARY_DIR</span><span class="o">}</span><span class="s">/</span><span class="o">${</span><span class="nv">EXE_NAME</span><span class="o">}</span><span class="s">.bin</span> |
| <span class="p">)</span> |
| |
| <span class="nb">target_link_libraries</span><span class="p">(</span><span class="o">${</span><span class="nv">EXE_NAME</span><span class="o">}</span> <span class="s">--start-group</span><span class="p">)</span> |
| |
| <span class="nb">target_link_libraries</span><span class="p">(</span><span class="o">${</span><span class="nv">EXE_NAME</span><span class="o">}</span> <span class="s">sched</span><span class="p">)</span> |
| <span class="nb">target_link_libraries</span><span class="p">(</span><span class="o">${</span><span class="nv">EXE_NAME</span><span class="o">}</span> <span class="s">drivers</span><span class="p">)</span> |
| <span class="nb">target_link_libraries</span><span class="p">(</span><span class="o">${</span><span class="nv">EXE_NAME</span><span class="o">}</span> <span class="s">boards</span><span class="p">)</span> |
| <span class="nb">target_link_libraries</span><span class="p">(</span><span class="o">${</span><span class="nv">EXE_NAME</span><span class="o">}</span> <span class="s">c</span><span class="p">)</span> |
| <span class="nb">target_link_libraries</span><span class="p">(</span><span class="o">${</span><span class="nv">EXE_NAME</span><span class="o">}</span> <span class="s">mm</span><span class="p">)</span> |
| <span class="nb">target_link_libraries</span><span class="p">(</span><span class="o">${</span><span class="nv">EXE_NAME</span><span class="o">}</span> <span class="s">arch</span><span class="p">)</span> |
| <span class="nb">target_link_libraries</span><span class="p">(</span><span class="o">${</span><span class="nv">EXE_NAME</span><span class="o">}</span> <span class="s">xx</span><span class="p">)</span> |
| <span class="nb">target_link_libraries</span><span class="p">(</span><span class="o">${</span><span class="nv">EXE_NAME</span><span class="o">}</span> <span class="s">apps</span><span class="p">)</span> |
| <span class="nb">target_link_libraries</span><span class="p">(</span><span class="o">${</span><span class="nv">EXE_NAME</span><span class="o">}</span> <span class="s">fs</span><span class="p">)</span> |
| <span class="nb">target_link_libraries</span><span class="p">(</span><span class="o">${</span><span class="nv">EXE_NAME</span><span class="o">}</span> <span class="s">binfmt</span><span class="p">)</span> |
| <span class="nb">target_link_libraries</span><span class="p">(</span><span class="o">${</span><span class="nv">EXE_NAME</span><span class="o">}</span> <span class="s">board</span><span class="p">)</span> |
| <span class="nb">target_link_libraries</span><span class="p">(</span><span class="o">${</span><span class="nv">EXE_NAME</span><span class="o">}</span> <span class="s">gcc</span><span class="p">)</span> |
| <span class="nb">target_link_libraries</span><span class="p">(</span><span class="o">${</span><span class="nv">EXE_NAME</span><span class="o">}</span> <span class="s">supc++</span><span class="p">)</span> |
| |
| <span class="nb">target_link_libraries</span><span class="p">(</span><span class="o">${</span><span class="nv">EXE_NAME</span><span class="o">}</span> <span class="s">--end-group</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| <ul class="simple"> |
| <li><p>hellocpp/src/main.cpp</p></li> |
| </ul> |
| <div class="highlight-c++ notranslate"><div class="highlight"><pre><span></span><span class="cp">#include</span> <span class="cpf">"HelloWorld.h"</span><span class="cp"></span> |
| <span class="cp">#include</span> <span class="cpf"><nuttx/config.h></span><span class="cp"></span> |
| |
| <span class="k">extern</span> <span class="s">"C"</span> |
| <span class="p">{</span> |
| <span class="kt">int</span> <span class="nf">hellocpp_main</span><span class="p">(</span><span class="kt">void</span><span class="p">)</span> |
| <span class="p">{</span> |
| |
| <span class="n">CHelloWorld</span> <span class="o">*</span><span class="n">pHelloWorld</span> <span class="o">=</span> <span class="k">new</span> <span class="n">CHelloWorld</span><span class="p">();</span> |
| <span class="n">pHelloWorld</span><span class="o">-></span><span class="n">HelloWorld</span><span class="p">();</span> |
| |
| <span class="n">CHelloWorld</span> <span class="n">helloWorld</span><span class="p">;</span> |
| <span class="n">helloWorld</span><span class="p">.</span><span class="n">HelloWorld</span><span class="p">();</span> |
| |
| <span class="k">delete</span> <span class="n">pHelloWorld</span><span class="p">;</span> |
| <span class="k">return</span> <span class="mi">0</span><span class="p">;</span> |
| <span class="p">}</span> |
| <span class="p">}</span> |
| </pre></div> |
| </div> |
| <ul class="simple"> |
| <li><p>hellocpp/src/HelloWorld.h</p></li> |
| </ul> |
| <div class="highlight-c++ notranslate"><div class="highlight"><pre><span></span><span class="cp">#ifndef HELLOWORLD_H_</span> |
| <span class="cp">#define HELLOWORLD_H_</span> |
| |
| <span class="cp">#include</span> <span class="cpf">"nuttx/config.h"</span><span class="cp"></span> |
| |
| <span class="k">class</span> <span class="nc">CHelloWorld</span> |
| <span class="p">{</span> |
| <span class="k">public</span><span class="o">:</span> |
| <span class="n">CHelloWorld</span><span class="p">();</span> |
| <span class="o">~</span><span class="n">CHelloWorld</span><span class="p">();</span> |
| <span class="kt">bool</span> <span class="nf">HelloWorld</span><span class="p">(</span><span class="kt">void</span><span class="p">);</span> |
| <span class="k">private</span><span class="o">:</span> |
| <span class="kt">int</span> <span class="n">mSecret</span><span class="p">;</span> |
| <span class="p">};</span> |
| |
| <span class="cp">#endif</span> |
| </pre></div> |
| </div> |
| <ul class="simple"> |
| <li><p>hellocpp/src/HelloWorld.cpp</p></li> |
| </ul> |
| <div class="highlight-c++ notranslate"><div class="highlight"><pre><span></span><span class="cp">#include</span> <span class="cpf"><cstdio></span><span class="cp"></span> |
| <span class="cp">#include</span> <span class="cpf"><string></span><span class="cp"></span> |
| |
| <span class="cp">#include</span> <span class="cpf">"HelloWorld.h"</span><span class="cp"></span> |
| |
| <span class="n">CHelloWorld</span><span class="o">::</span><span class="n">CHelloWorld</span><span class="p">()</span> <span class="p">{</span> |
| <span class="n">mSecret</span> <span class="o">=</span> <span class="mi">42</span><span class="p">;</span> |
| <span class="n">std</span><span class="o">::</span><span class="n">printf</span><span class="p">(</span><span class="s">"Constructor: mSecret=%d</span><span class="se">\n</span><span class="s">"</span><span class="p">,</span><span class="n">mSecret</span><span class="p">);</span> |
| <span class="p">}</span> |
| |
| <span class="n">CHelloWorld</span><span class="o">::~</span><span class="n">CHelloWorld</span><span class="p">()</span> <span class="p">{</span> |
| |
| <span class="p">}</span> |
| |
| <span class="kt">bool</span> <span class="n">CHelloWorld</span><span class="o">::</span><span class="n">HelloWorld</span><span class="p">(</span><span class="kt">void</span><span class="p">)</span> <span class="p">{</span> |
| <span class="n">std</span><span class="o">::</span><span class="n">printf</span><span class="p">(</span><span class="s">"HelloWorld: mSecret=%d</span><span class="se">\n</span><span class="s">"</span><span class="p">,</span><span class="n">mSecret</span><span class="p">);</span> |
| |
| <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="n">sentence</span> <span class="o">=</span> <span class="s">"Hello"</span><span class="p">;</span> |
| <span class="n">std</span><span class="o">::</span><span class="n">printf</span><span class="p">(</span><span class="s">"TEST=%s</span><span class="se">\n</span><span class="s">"</span><span class="p">,</span><span class="n">sentence</span><span class="p">.</span><span class="n">c_str</span><span class="p">());</span> |
| |
| <span class="k">if</span> <span class="p">(</span><span class="n">mSecret</span> <span class="o">==</span> <span class="mi">42</span><span class="p">)</span> <span class="p">{</span> |
| <span class="n">std</span><span class="o">::</span><span class="n">printf</span><span class="p">(</span><span class="s">"CHelloWorld: HelloWorld: Hello, world!</span><span class="se">\n</span><span class="s">"</span><span class="p">);</span> |
| <span class="k">return</span> <span class="nb">true</span><span class="p">;</span> |
| <span class="p">}</span> |
| <span class="k">else</span> <span class="p">{</span> |
| <span class="n">std</span><span class="o">::</span><span class="n">printf</span><span class="p">(</span><span class="s">"CHelloWorld: HelloWorld: CONSTRUCTION FAILED!</span><span class="se">\n</span><span class="s">"</span><span class="p">);</span> |
| <span class="k">return</span> <span class="nb">false</span><span class="p">;</span> |
| <span class="p">}</span> |
| <span class="p">}</span> |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="building"> |
| <h2>Building<a class="headerlink" href="#building" title="Permalink to this headline">ΒΆ</a></h2> |
| <p>To launch build, you use the cmake procedure:</p> |
| <div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp">$ </span>mkdir build |
| <span class="gp">$ </span><span class="nb">cd</span> build |
| <span class="gp">$ </span>cmake .. |
| <span class="gp">$ </span>make |
| </pre></div> |
| </div> |
| <p>And finally a bin file will be created to be loaded on the board.</p> |
| </div> |
| </div> |
| |
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