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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-8981] LIBDEPS library ordering instability can drive spurious rebuilds of mongod and mongos</title>
                <link>https://jira.mongodb.org/browse/SERVER-8981</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The mongod and mongos targets are occasionally rebuilt even when no changes have been made, because the ordering of libraries on the link line is not consistent. SCons sees the library ordering difference as requiring a rebuild.&lt;/p&gt;</description>
                <environment></environment>
        <key id="68453">SERVER-8981</key>
            <summary>LIBDEPS library ordering instability can drive spurious rebuilds of mongod and mongos</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="3">Duplicate</resolution>
                                        <assignee username="jonathan.reams@mongodb.com">Jonathan Reams</assignee>
                                    <reporter username="andrew.morrow@mongodb.com">Andrew Morrow</reporter>
                        <labels>
                    </labels>
                <created>Thu, 14 Mar 2013 19:02:38 +0000</created>
                <updated>Wed, 10 Dec 2014 23:06:56 +0000</updated>
                            <resolved>Wed, 6 Aug 2014 18:12:08 +0000</resolved>
                                                                    <component>Build</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="683006" author="jonathan.reams@10gen.com" created="Wed, 6 Aug 2014 18:12:08 +0000"  >&lt;p&gt;Duplicated by &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-14605&quot; title=&quot;Order of libraries passed to linker is non-deterministic, causing extraneous rebuilds&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-14605&quot;&gt;&lt;del&gt;SERVER-14605&lt;/del&gt;&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="289377" author="milkie" created="Thu, 14 Mar 2013 19:11:13 +0000"  >&lt;p&gt;I thought we already fixed this?  It was a big problem before but Andy added a sort in there somewhere and it got a lot better after that.&lt;/p&gt;</comment>
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                            <customfieldvalue>&lt;p&gt;With a clean &apos;build&apos; directory, and with the enterprise repo enabled, build mongod (don&apos;t use --mute):&lt;/p&gt;

&lt;p&gt;&amp;gt; scons ./mongod&lt;/p&gt;

&lt;p&gt;At the end, have a look at the libraries on the link line:&lt;br/&gt;
-ldl -lgsasl -lnetsnmpagent -lnetsnmpmibs -lnetsnmp -lgsasl -lssl -lcrypto&lt;/p&gt;

&lt;p&gt;Rebuild the target. This should be a no-op, but if you do it enough times, it will get rebuilt. Note the libraries on the link line:&lt;/p&gt;

&lt;p&gt;-lnetsnmpagent -lnetsnmpmibs -lnetsnmp -lgsasl -ldl -lgsasl -lssl -lcrypto&lt;/p&gt;

&lt;p&gt;They are different, forcing a rebuild&lt;/p&gt;</customfieldvalue>

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