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<title>Invoking Gcov-tool - Using the GNU Compiler Collection (GCC)</title>
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<a name="Invoking-Gcov-tool"></a>
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<a name="Invoking-Gcov_002dtool"></a>
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Previous: <a rel="previous" accesskey="p" href="Gcov_002dtool-Intro.html#Gcov_002dtool-Intro">Gcov-tool Intro</a>,
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Up: <a rel="up" accesskey="u" href="Gcov_002dtool.html#Gcov_002dtool">Gcov-tool</a>
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<h3 class="section">11.2 Invoking <samp><span class="command">gcov-tool</span></samp></h3>
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<pre class="smallexample"> gcov-tool <span class="roman">[</span><var>global-options</var><span class="roman">]</span> SUB_COMMAND <span class="roman">[</span><var>sub_command-options</var><span class="roman">]</span> <var>profile_dir</var>
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</pre>
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<p><samp><span class="command">gcov-tool</span></samp> accepts the following options:
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<!-- man begin OPTIONS -->
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<dl>
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<dt><code>-h</code><dt><code>--help</code><dd>Display help about using <samp><span class="command">gcov-tool</span></samp> (on the standard output), and
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exit without doing any further processing.
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<br><dt><code>-v</code><dt><code>--version</code><dd>Display the <samp><span class="command">gcov-tool</span></samp> version number (on the standard output),
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and exit without doing any further processing.
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<br><dt><code>merge</code><dd>Merge two profile directories.
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<dl>
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<dt><code>-v</code><dt><code>--verbose</code><dd>Set the verbose mode.
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<br><dt><code>-o </code><var>directory</var><dt><code>--output </code><var>directory</var><dd>Set the output profile directory. Default output directory name is
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<var>merged_profile</var>.
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<br><dt><code>-w </code><var>w1</var><code>,</code><var>w2</var><dt><code>--weight </code><var>w1</var><code>,</code><var>w2</var><dd>Set the merge weights of the <var>directory1</var> and <var>directory2</var>,
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respectively. The default weights are 1 for both.
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</dl>
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<br><dt><code>rewrite</code><dd>Read the specified profile directory and rewrite to a new directory.
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<dl>
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<dt><code>-v</code><dt><code>--verbose</code><dd>Set the verbose mode.
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<br><dt><code>-o </code><var>directory</var><dt><code>--output </code><var>directory</var><dd>Set the output profile directory. Default output name is <var>rewrite_profile</var>.
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<br><dt><code>-s </code><var>float_or_simple-frac_value</var><dt><code>--scale </code><var>float_or_simple-frac_value</var><dd>Scale the profile counters. The specified value can be in floating point value,
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or simple fraction value form, such 1, 2, 2/3, and 5/3.
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<br><dt><code>-n </code><var>long_long_value</var><dt><code>--normalize <long_long_value></code><dd>Normalize the profile. The specified value is the max counter value
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in the new profile.
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</dl>
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<br><dt><code>overlap</code><dd>Computer the overlap score between the two specified profile directories.
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The overlap score is computed based on the arc profiles. It is defined as
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the sum of min (p1_counter[i] / p1_sum_all, p2_counter[i] / p2_sum_all),
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for all arc counter i, where p1_counter[i] and p2_counter[i] are two
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matched counters and p1_sum_all and p2_sum_all are the sum of counter
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values in profile 1 and profile 2, respectively.
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<dl>
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<dt><code>-v</code><dt><code>--verbose</code><dd>Set the verbose mode.
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<br><dt><code>-h</code><dt><code>--hotonly</code><dd>Only print info for hot objects/functions.
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<br><dt><code>-f</code><dt><code>--function</code><dd>Print function level overlap score.
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<br><dt><code>-F</code><dt><code>--fullname</code><dd>Print full gcda filename.
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<br><dt><code>-o</code><dt><code>--object</code><dd>Print object level overlap score.
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<br><dt><code>-t </code><var>float</var><dt><code>--hot_threshold <float></code><dd>Set the threshold for hot counter value.
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</dl>
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</dl>
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<!-- man end -->
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