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| 39 | <div class="titlepage"><div><div><h2 class="title" style="clear: both"> |
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| 40 | <a name="id2861867"></a>How to change compilation flags for one file? |
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| 41 | </h2></div></div></div> |
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| 42 | <p>If one file must be compiled with special options, you need to |
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| 43 | explicitly declare an <code class="computeroutput">obj</code> target for that file and then use |
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| 44 | that target in your <code class="computeroutput">exe</code> or <code class="computeroutput">lib</code> target: |
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| 45 | </p> |
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| 46 | <pre class="programlisting"> |
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| 47 | exe a : a.cpp b ; |
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| 48 | obj b : b.cpp : <optimization>off ; |
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| 49 | </pre> |
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| 50 | <p> |
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| 51 | Of course you can use other properties, for example to specify specific |
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| 52 | compiler options: |
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| 53 | </p> |
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| 54 | <pre class="programlisting"> |
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| 55 | exe a : a.cpp b ; |
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| 56 | obj b : b.cpp : <cflags>-g ; |
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| 57 | </pre> |
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| 58 | <p> |
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| 59 | You can also use <a href="../tutorial/conditions.html" title="Conditions and alternatives">conditional |
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| 60 | properties</a> for finer control: |
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| 61 | </p> |
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| 62 | <pre class="programlisting"> |
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| 63 | exe a : a.cpp b ; |
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| 64 | obj b : b.cpp : <variant>release:<optimization>off ; |
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