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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-20540] Support compiling with split DWARF debug info</title>
                <link>https://jira.mongodb.org/browse/SERVER-20540</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;GCC and Clang support compiling the DWARF debugging information to separate .dwo files so that the .o files passed to the linker can remain relatively small. This only works when linking with gold.&lt;/p&gt;

&lt;p&gt;We need to compile with &amp;#45;gsplit-dwarf then add &amp;#45;Wl,--gdb-index to the link flags. Anecodotal reports on other projects (e.g. Chromium &lt;a href=&quot;https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/8tKb9-Wr8gk&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/8tKb9-Wr8gk&lt;/a&gt;) show that this can contribute to a 20-80% reduction in link time.&lt;/p&gt;

&lt;p&gt;more info &lt;a href=&quot;https://gcc.gnu.org/wiki/DebugFission&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://gcc.gnu.org/wiki/DebugFission&lt;/a&gt;&lt;/p&gt;</description>
                <environment></environment>
        <key id="230746">SERVER-20540</key>
            <summary>Support compiling with split DWARF debug info</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</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="9">Done</resolution>
                                        <assignee username="andrew.morrow@mongodb.com">Andrew Morrow</assignee>
                                    <reporter username="adam.midvidy">Adam Midvidy</reporter>
                        <labels>
                    </labels>
                <created>Mon, 21 Sep 2015 18:21:03 +0000</created>
                <updated>Mon, 10 Apr 2017 00:47:16 +0000</updated>
                            <resolved>Tue, 21 Mar 2017 19:16:50 +0000</resolved>
                                                    <fixVersion>3.2.13</fixVersion>
                    <fixVersion>3.4.4</fixVersion>
                    <fixVersion>3.5.4</fixVersion>
                                    <component>Build</component>
                                        <votes>1</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="1544683" author="xgen-internal-githook" created="Mon, 10 Apr 2017 00:43:27 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;acmorrow&apos;, u&apos;name&apos;: u&apos;Andrew Morrow&apos;, u&apos;email&apos;: u&apos;acm@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-20540&quot; title=&quot;Support compiling with split DWARF debug info&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-20540&quot;&gt;&lt;del&gt;SERVER-20540&lt;/del&gt;&lt;/a&gt; Add an emitter for .dwo generated by -gsplit-dwarf&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 39f71f9f17103d47ef9b1234cb506aa8ad420114)&lt;br/&gt;
Branch: v3.2&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/59a2a10d2779e15fc8785fdf100962d65a2cb34f&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/59a2a10d2779e15fc8785fdf100962d65a2cb34f&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1544642" author="xgen-internal-githook" created="Sun, 9 Apr 2017 21:45:28 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;acmorrow&apos;, u&apos;name&apos;: u&apos;Andrew Morrow&apos;, u&apos;email&apos;: u&apos;acm@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-20540&quot; title=&quot;Support compiling with split DWARF debug info&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-20540&quot;&gt;&lt;del&gt;SERVER-20540&lt;/del&gt;&lt;/a&gt; Add an emitter for .dwo generated by -gsplit-dwarf&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 39f71f9f17103d47ef9b1234cb506aa8ad420114)&lt;br/&gt;
Branch: v3.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/3554f3ed2972cb2b1cf9db1e9947e56864b554a9&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/3554f3ed2972cb2b1cf9db1e9947e56864b554a9&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1529708" author="acm" created="Tue, 21 Mar 2017 19:18:43 +0000"  >&lt;p&gt;This is a safe change for developer builds that we should consistently enable across branches currently under active development.&lt;/p&gt;</comment>
                            <comment id="1529586" author="xgen-internal-githook" created="Tue, 21 Mar 2017 18:01:13 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;acmorrow&apos;, u&apos;name&apos;: u&apos;Andrew Morrow&apos;, u&apos;email&apos;: u&apos;acm@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-20540&quot; title=&quot;Support compiling with split DWARF debug info&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-20540&quot;&gt;&lt;del&gt;SERVER-20540&lt;/del&gt;&lt;/a&gt; Add an emitter for .dwo generated by -gsplit-dwarf&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/39f71f9f17103d47ef9b1234cb506aa8ad420114&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/39f71f9f17103d47ef9b1234cb506aa8ad420114&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1044228" author="acm" created="Sat, 26 Sep 2015 15:33:44 +0000"  >&lt;p&gt;Another one we should try is -fdebug-types-section but it doesn&apos;t seem to work yet: &lt;a href=&quot;https://evergreen.mongodb.com/version/5606b60f3ff12277dd0002fb_0&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://evergreen.mongodb.com/version/5606b60f3ff12277dd0002fb_0&lt;/a&gt;&lt;/p&gt;</comment>
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