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| <div class="section" id="compile-definitions"> |
| <span id="prop_sf:COMPILE_DEFINITIONS"></span><h1>COMPILE_DEFINITIONS<a class="headerlink" href="#compile-definitions" title="Permalink to this headline">ΒΆ</a></h1> |
| <p>Preprocessor definitions for compiling a source file.</p> |
| <p>The COMPILE_DEFINITIONS property may be set to a semicolon-separated |
| list of preprocessor definitions using the syntax VAR or VAR=value. |
| Function-style definitions are not supported. CMake will |
| automatically escape the value correctly for the native build system |
| (note that CMake language syntax may require escapes to specify some |
| values). This property may be set on a per-configuration basis using |
| the name COMPILE_DEFINITIONS_<CONFIG> where <CONFIG> is an upper-case |
| name (ex. “COMPILE_DEFINITIONS_DEBUG”).</p> |
| <p>CMake will automatically drop some definitions that are not supported |
| by the native build tool. Xcode does not support per-configuration |
| definitions on source files.</p> |
| <p>Disclaimer: Most native build tools have poor support for escaping |
| certain values. CMake has work-arounds for many cases but some values |
| may just not be possible to pass correctly. If a value does not seem |
| to be escaped correctly, do not attempt to work-around the problem by |
| adding escape sequences to the value. Your work-around may break in a |
| future version of CMake that has improved escape support. Instead |
| consider defining the macro in a (configured) header file. Then |
| report the limitation. Known limitations include:</p> |
| <div class="highlight-default"><div class="highlight"><pre><span></span><span class="c1"># - broken almost everywhere</span> |
| <span class="p">;</span> <span class="o">-</span> <span class="n">broken</span> <span class="ow">in</span> <span class="n">VS</span> <span class="n">IDE</span> <span class="mf">7.0</span> <span class="ow">and</span> <span class="n">Borland</span> <span class="n">Makefiles</span> |
| <span class="p">,</span> <span class="o">-</span> <span class="n">broken</span> <span class="ow">in</span> <span class="n">VS</span> <span class="n">IDE</span> |
| <span class="o">%</span> <span class="o">-</span> <span class="n">broken</span> <span class="ow">in</span> <span class="n">some</span> <span class="n">cases</span> <span class="ow">in</span> <span class="n">NMake</span> |
| <span class="o">&</span> <span class="o">|</span> <span class="o">-</span> <span class="n">broken</span> <span class="ow">in</span> <span class="n">some</span> <span class="n">cases</span> <span class="n">on</span> <span class="n">MinGW</span> |
| <span class="o">^</span> <span class="o"><</span> <span class="o">></span> \<span class="s2">" - broken in most Make tools on Windows</span> |
| </pre></div> |
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| <p>CMake does not reject these values outright because they do work in |
| some cases. Use with caution.</p> |
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