<body>
<div class="doc_title">How To Release LLVM To The Public</div>
-<p class="doc_warning">NOTE: THIS DOCUMENT IS A WORK IN PROGRESS!</p>
<ol>
<li><a href="#introduction">Introduction</a></li>
- <li><a href="#process">Release Process</a>
- <ol>
- <li><a href="overview">Overview</a></li>
- <li><a href="merge">Merge Branches</a></li>
- <li><a href="build">Build LLVM</a></li>
- <li><a href="check">Run 'make check'</a></li>
- <li><a href="test">Run LLVM Test Suite</a></li>
- <li><a href="deps">make LibDeps.txt</a></li>
- <li><a href="tag">cvs tag</a></li>
- <li><a href="dist">make dist</a></li>
- <li><a href="release">Release</a></li>
- </ol></li>
+ <li><a href="#introduction">Release Timeline</a></li>
+ <li><a href="#process">Release Process</a></li>
+ <li><a href="#dist_targets">Distribution Targets</a></li>
</ol>
<div class="doc_author">
- <p>Written by <a href="mailto:rspencer@x10sys.com">Reid Spencer</a></p>
+ <p>Written by <a href="mailto:rspencer@x10sys.com">Reid Spencer</a>,
+ <a href="mailto:criswell@cs.uiuc.edu">John Criswell</a>,
+ <a href="mailto:tonic@nondot.org">Tanya Lattner</a></p>
</div>
<!-- *********************************************************************** -->
<!-- *********************************************************************** -->
<div class="doc_text">
-<p>This document collects information about successfully releasing LLVM to the
-public. It is the release manager's guide to ensuring that a high quality build
-of LLVM is released. Mostly, its just a bunch of reminders of things to do at
-release time so we don't inadvertently ship something that is utility
-deficient.</p>
+ <p>
+ This document collects information about successfully releasing LLVM to the
+ public. It is the release manager's guide to ensuring that a high quality
+ build of LLVM is released.
+ </p>
+
+ <p>
+ The following is the basic criteria for releasing LLVM:
+ </p>
+
+ <ol>
+ <li>Successful configure and build.</li>
+ <li>Clean 'make check'.</li>
+ <li>No regressions in the testsuite from the previous release. This may
+ include performance regressions for major benchmarks.</li>
+ </ol>
</div>
+<!-- *********************************************************************** -->
+<div class="doc_section"><a name="process">Release Timeline</a></div>
+<!-- *********************************************************************** -->
+<div class="doc_text">
+The release manager should attempt to have a release every 3-4 months because LLVM
+does time based releases (instead of feature based). The release schedule should
+be roughly as follows:
+<ol>
+<li>Set code freeze and branch creation date for 3 months after last release
+date. Announce release schedule to the LLVM community and update the website.</li>
+<li>Create release branch and begin release process. </li>
+<li>Send out pre-release for first round of testing. Testing will last 7-10 days.
+During the first round of testing, regressions should be found and fixed. Patches
+are merged from mainline to the release branch.</li>
+<li>Generate and send out second pre-release. Bugs found during this time will
+not be fixed unless absolutely critical. Bugs introduce by patches merged in
+will be fixed and if so, a 3rd round of testing is needed.</li>
+<li>The release notes should be updated during the first and second round of
+pre-release testing.</li>
+<li>Finally, release!</li>
+</ol>
+</div>
+
+
<!-- *********************************************************************** -->
<div class="doc_section"><a name="process">Release Process</a></div>
<!-- *********************************************************************** -->
<div class="doc_subsection"><a name="overview">Process Overview</a></div>
<div class="doc_text">
<ol>
- <li><a href="merge">Merge Branches</a></li>
- <li><a href="build">Build LLVM</a></li>
- <li><a href="check">Run 'make check'</a></li>
- <li><a href="test">Run LLVM Test Suite</a></li>
- <li><a href="deps">make LibDeps.txt</a></li>
- <li><a href="tag">cvs tag</a></li>
- <li><a href="dist">make dist</a></li>
- <li><a href="release">release</a></li>
+ <li><a href="#branch">Create Release Branch</a></li>
+ <li><a href="#verchanges">Update LLVM Version </a></li>
+ <li><a href="#dist">Build the LLVM Source Distributions</a></li>
+ <li><a href="#build">Build LLVM</a></li>
+ <li><a href="#llvmgccbin">Build the LLVM GCC Binary Distribution</a></li>
+ <li><a href="#rpm">Build RPM Packages (optional)</a></li>
+ <li><a href="#check">Run 'make check'</a></li>
+ <li><a href="#test">Run LLVM Test Suite</a></li>
+ <li><a href="#prerelease">Pre-Release Testing</a></li>
+ <li><a href="#tag">Tag the LLVM Release Branch</a></li>
+ <li><a href="#updocs">Update Documentation</a></li>
+ <li><a href="#updemo">Update the LLVM Demo Page</a></li>
+ <li><a href="#webupdates">Update the LLVM Website</a></li>
+ <li><a href="#announce">Announce the Release</a></li>
+
</ol>
</div>
<!-- ======================================================================= -->
-<div class="doc_subsection"><a name="merge">Merge Branches</a></div>
+<div class="doc_subsection"><a name="branch">Create Release Branch</a></div>
+<div class="doc_text">
+<p>Branch the Subversion HEAD using the following procedure:</p>
+ <ol>
+ <li>
+ <p>Verify that the current Subversion HEAD is in decent shape by examining nightly
+ tester results.</p></li>
+ <li>
+ <p>Request all developers to refrain from committing. Offenders get commit
+ rights taken away (temporarily).</p></li>
+ <li>
+ <p> Create the release branch for <tt>llvm</tt>, <tt>llvm-gcc4.0</tt>,
+ <tt>llvm-gcc4.2</tt>, and the <tt>test-suite</tt>. The
+ branch name will be <tt>release_XX</tt>, where <tt>XX</tt> is the major and
+ minor release numbers. These branches can be created without checking out
+ anything from subversion.
+ </p>
+
+ <div class="doc_code">
+<pre>
+svn copy https://llvm.org/svn/llvm-project/llvm/trunk \
+ https://llvm.org/svn/llvm-project/llvm/branches/release_<i>XX</i>
+svn copy https://llvm.org/svn/llvm-project/llvm-gcc-4.0/trunk \
+ https://llvm.org/svn/llvm-project/llvm-gcc-4.0/branches/release_<i>XX</i>
+svn copy https://llvm.org/svn/llvm-project/llvm-gcc-4.2/trunk \
+ https://llvm.org/svn/llvm-project/llvm-gcc-4.2/branches/release_<i>XX</i>
+svn copy https://llvm.org/svn/llvm-project/test-suite/trunk \
+ https://llvm.org/svn/llvm-project/test-suite/branches/release_<i>XX</i>
+</pre>
+ </div>
+
+ <li>
+ <p>Advise developers they can work on Subversion HEAD again.</p></li>
+
+ <li>
+ <p>The Release Manager should switch to the release branch (as all changes
+ to the release will now be done in the branch). The easiest way to do this
+ is to grab another working copy using the following commands:</p>
+
+<div class="doc_code">
+<pre>
+svn co https://llvm.org/svn/llvm-project/llvm/branches/release_<i>XX</i>
+svn co https://llvm.org/svn/llvm-project/llvm-gcc-4.0/branches/release_<i>XX</i>
+svn co https://llvm.org/svn/llvm-project/llvm-gcc-4.2/branches/release_<i>XX</i>
+svn co https://llvm.org/svn/llvm-project/test-suite/branches/release_<i>XX</i>
+</pre>
+</div></li>
+
+</div>
+ </ol>
+</div>
+
+<!-- ======================================================================= -->
+<div class="doc_subsection"><a name="verchanges">Update LLVM Version</a></div>
+<div class="doc_text">
+ <p>
+ After creating the LLVM release branch, update the release branches'
+ autoconf/configure.ac version from X.Xsvn to just X.X. Update it on mainline
+ as well to be the next version (X.X+1svn). Regenerated the configure script
+ for both. This must be done for both llvm and the test-suite.
+ </p>
+ <p>In addition, the version number of all the Bugzilla components must be
+ updated for the next release.
+ </p>
+</div>
+
+<!-- ======================================================================= -->
+<div class="doc_subsection"><a name="dist">Build the LLVM Source Distributions</a></div>
<div class="doc_text">
-<p>Merge any work done on branches intended for release into mainline.</p>
+ <p>
+ Create source distributions for LLVM, LLVM GCC, and the LLVM Test Suite by
+ exporting the source from Subversion and archiving it. This can be done with
+ the following commands:
+ </p>
+
+<div class="doc_code">
+<pre>
+svn export https://llvm.org/svn/llvm-project/llvm/branches/release_<i>XX</i> llvm-X.X
+svn export https://llvm.org/svn/llvm-project/llvm-gcc-4.0/branches/release_<i>XX</i> llvm-gcc4.0-X.X.source
+svn export https://llvm.org/svn/llvm-project/llvm-gcc-4.2/branches/release_<i>XX</i> llvm-gcc4.2-X.X.source
+svn export https://llvm.org/svn/llvm-project/test-suite/branches/release_<i>XX</i> llvm-test-X.X
+tar -cvf - llvm-X.X | gzip > llvm-X.X.tar.gz
+tar -cvf - llvm-test-X.X | gzip > llvm-test-X.X.tar.gz
+tar -cvf - llvm-gcc4.0-X.X.source | gzip > llvm-gcc-4.0-X.X.source.tar.gz
+tar -cvf - llvm-gcc4.2-X.X.source | gzip > llvm-gcc-4.2-X.X.source.tar.gz
+</pre>
+</div>
</div>
<!-- ======================================================================= -->
<div class="doc_subsection"><a name="build">Build LLVM</a></div>
<div class="doc_text">
- <p>Build LLVM</p>
+ <p>
+ Build both debug and release (optimized) versions of LLVM on all
+ platforms. Ensure the build is warning and error free on each platform.
+ Note that when building the LLVM GCC Binary, use a release build of LLVM.
+ </p>
+</div>
+
+<!-- ======================================================================= -->
+<div class="doc_subsection"><a name="llvmgccbin">Build the LLVM GCC Binary Distribution</a></div>
+<div class="doc_text">
+ <p>
+ Creating the LLVM GCC binary distribution (release/optimized) requires
+ performing the following steps for each supported platform:
+ </p>
+
+ <ol>
+ <li>
+ Build the LLVM GCC front-end by following the directions in the README.LLVM
+ file. Be sure to build with LLVM_VERSION_INFO=X.X, where X is the major and
+ minor release numbers.
+ </li>
+
+ <li>
+ Copy the installation directory to a directory named for the specific target.
+ For example on Red Hat Enterprise Linux, the directory would be named
+ <tt>llvm-gcc4.0-2.1-x86-linux-RHEL4</tt>. Archive and compress the new directory.
+ </li>
+ </ol>
</div>
<!-- ======================================================================= -->
<div class="doc_subsection"><a name="check">Run 'make check'</a></div>
<div class="doc_text">
- <p>Run "make check" and ensure there are no unexpected failures. If there
- are, resolve the failures and go back to step 2.</p>
+ <p>
+ Using the newly built llvm-gcc and llvm, reconfigure llvm to locate llvm-gcc.
+ Run <tt>make check</tt> and ensure there are no unexpected failures. If there
+ are, resolve the failures or file a bug. If there is a fix commited to mainline,
+ merge back into the release branch, and restart testing by
+ <a href="#build">re-building LLVM</a> and <a href="#build">llvm-gcc</a>. If no
+ fix will be made, XFAIL the test and commit back to the release branch.
+ </p>
+
+ <p>
+ Ensure that '<tt>make check</tt>' passes on all platforms for all targets. The
+ test suite must complete with "0 unexpected failures" before sending out the
+ pre-releases for testing.
+ </p>
</div>
<!-- ======================================================================= -->
<div class="doc_subsection"><a name="test">LLVM Test Suite</a></div>
<div class="doc_text">
- <p>Run the llvm-test suite and ensure there are no unacceptable failures.
- If there are, resolve the failures and go back to step 2.</p>
+ <p>
+ Run the <tt>llvm-test</tt> suite and ensure there are no unacceptable
+ failures. Unacceptable failures are regression from the previous release
+ and (optionally) major performance regressions from the previous release.
+ If a regression is found a bug is filled, but the pre-releases may still go
+ out.</p>
+</div>
+
+<!-- ======================================================================= -->
+<div class="doc_subsection"><a name="rpm">Building RPM packages (optional)</a></div>
+<div class="doc_text">
+ <p>
+ You can, optionally, create source and binary RPM packages for LLVM. These may
+ make it easier to get LLVM into a distribution. This can be done with the
+ following commands:
+ </p>
+
+<div class="doc_code">
+<pre>
+make dist # Build the distribution source tarball
+make dist-check # Check that the source tarball can build itself.
+cp llvm-M.m.tar.gz /usr/src/redhat/SOURCES # Required by rpmbuild
+make srpm # for source rpm
+make rpm # for binary rpm
+</pre>
+</div>
+
+ <p>
+ First, use <tt>make dist</tt> to simply build the distribution. Any failures
+ need to be corrected (on the branch). Once <tt>make dist</tt> can be
+ successful, do <tt>make dist-check</tt>. This target will do the same thing as
+ the 'dist' target but also test that distribution to make sure it can build
+ itself and runs <tt>make check</tt> as well. This ensures that needed files
+ are not missing and that the src tarball can be successfully unpacked, built,
+ installed, and cleaned. Once you have a reliable tarball, you need to copy it
+ to the <tt>/usr/src/redhat/SOURCES</tt> directory which is a requirement of
+ the rpmbuild tool. The last two <tt>make</tt> invocations just run rpmbuild to
+ build either a source (<tt>srpm</tt>) or binary (<tt>rpm</tt>) RPM package.
+ </p>
+</div>
+
+<!-- ======================================================================= -->
+<div class="doc_subsection"><a name="prerelease">Pre-Release Testing</a></div>
+<div class="doc_text">
+ <p>
+ Once all testing has been completed and appropriate bugs filed, the pre-release
+ tar balls may be put on the website and the LLVM community is notified. Ask that
+ all LLVM developers test the release in 2 ways:</p>
+ <ol>
+ <li>Download llvm-X.X, llvm-test-X.X, and the appropriate llvm-gcc4 binary.
+ Run "make check" and the full llvm-test suite (make TEST=nightly report).<li>
+ <li>Download llvm-X.X, llvm-test-X.X, and the llvm-gcc4 source. Compile
+ everything. Run "make check" and the full llvm-test suite (make TEST=nightly
+ report).</li>
+ </ol>
+ <p>Ask LLVM developers to submit the report and make check results to the list.
+ Verify that there are no regressions from the previous release. For
+ unsupported targets, verify that make check at least is clean.</p>
+
+ <p>The first round of pre-release testing will be the longest. During this time,
+ all regressions must be fixed before the second pre-release is created (repeat
+ steps 4-8).</p>
+
+ <p>If this is the second round of testing, this is only to ensure the bug fixes
+ previously merged in have not created new major problems. This is not the time
+ to solve additional and unrelated bugs. If no patches are merged in, the release
+ is determined to be ready and the release manager may move onto the next step.</p>
+</div>
+
+
+<!-- ======================================================================= -->
+<div class="doc_subsection"><a name="tag">Tag the Release Branch</a></div>
+<div class="doc_text">
+ <p>Tag the release branch using the following procedure:</p>
+<div class="doc_code">
+<pre>
+svn copy https://llvm.org/svn/llvm-project/llvm/branches/release_XX \
+ https://llvm.org/svn/llvm-project/llvm/tags/RELEASE_<i>XX</i>
+svn copy https://llvm.org/svn/llvm-project/llvm-gcc-4.0/branches/release_XX \
+ https://llvm.org/svn/llvm-project/llvm-gcc-4.0/tags/RELEASE_<i>XX</i>
+svn copy https://llvm.org/svn/llvm-project/llvm-gcc-4.2/branches/release_XX \
+ https://llvm.org/svn/llvm-project/llvm-gcc-4.2/tags/RELEASE_<i>XX</i>
+svn copy https://llvm.org/svn/llvm-project/test-suite/branches/release_XX \
+ https://llvm.org/svn/llvm-project/test-suite/tags/RELEASE_<i>XX</i>
+</pre>
+</div>
+</div>
+
+<!-- ======================================================================= -->
+<div class="doc_subsection"><a name="updocs">Update Documentation</a></div>
+<div class="doc_text">
+ <p>
+ Review the documentation and ensure that it is up to date. The Release Notes
+ must be updated to reflect bug fixes, new known issues, and changes in the
+ list of supported platforms. The Getting Started Guide should be updated to
+ reflect the new release version number tag avaiable from Subversion and
+ changes in basic system requirements. Merge both changes from mainline into
+ the release branch.
+ </p>
+</div>
+
+<!-- ======================================================================= -->
+<div class="doc_subsection"><a name="updemo">Update the LLVM Demo Page</a></div>
+<div class="doc_text">
+ <p>
+ The LLVM demo page must be updated to use the new release. This consists of
+ using the llvm-gcc binary and building LLVM. Update the website demo page
+ configuration to use the new release.</p>
+</div>
+
+<!-- ======================================================================= -->
+<div class="doc_subsection"><a name="webupdates">Update the LLVM Website</a></div>
+<div class="doc_text">
+ <p>
+ The website must be updated before the release announcement is sent out. Here is
+ what to do:</p>
+ <ol>
+ <li> Check out the <tt>website</tt> module from CVS. </li>
+ <li> Create a new subdirectory X.X in the releases directory. </li>
+ <li> Commit the <tt>llvm</tt>, <tt>test-suite</tt>, <tt>llvm-gcc</tt> source,
+ and <tt>llvm-gcc</tt> binaries in this new directory. </li>
+ <li> Copy and commit the <tt>llvm/docs</tt> and <tt>LICENSE.txt</tt>
+ files into this new directory. The docs should be built with BUILD_FOR_WEBSITE=1.</li>
+ <li> Commit the index.html to the release/X.X directory to redirect (use from previous
+ release. </li>
+ <li> Update the <tt>releases/download.html</tt> file with the new release. </li>
+ <li>Update the <tt>releases/index.html</tt> with the new release and link to
+ release documentation.</li>
+ <li> Finally, update the main page (<tt>index.html</tt> and sidebar) to
+ point to the new release and release announcement. Make sure this all gets
+ commited back into Subversion.</li>
+ </ol>
+</div>
+
+<!-- ======================================================================= -->
+<div class="doc_subsection"><a name="announce">Announce the Release</a></div>
+<div class="doc_text">
+ <p>Have Chris send out the release announcement when everything is finished.</p>
+</div>
+
+<!-- *********************************************************************** -->
+<div class="doc_section"><a name="dist_targets">Distribution Targets</a></div>
+<!-- *********************************************************************** -->
+
+<!-- ======================================================================= -->
+<div class="doc_subsection">Overview</div>
+<div class="doc_text">
+ <p>
+ The first thing you need to understand is that there are multiple make targets
+ to support this feature. Here's an overview, we'll delve into the details
+ later.
+ </p>
+
+ <ul>
+ <li><b>distdir</b> - builds the distribution directory from which the
+ distribution will be packaged</li>
+ <li><b>dist</b> - builds each of the distribution tarballs (tar.gz,
+ tar.bzip2, .zip). These can be built individually as well, with separate
+ targets.</li>
+ <li><b>dist-check</b> - this is identical to <tt>dist</tt> but includes a
+ check on the distribution that ensures the tarball can: unpack
+ successfully, compile correctly, pass '<tt>make check</tt>', and pass
+ '<tt>make clean</tt>'.</li>
+ <li><b>dist-clean</b>- this just does a normal clean but also cleans up the
+ stuff generated by the other three <tt>dist</tt> targets (above).</li>
+ </ul>
+
+ <p>
+ Okay, that's the basic functionality. When making a release, we want to ensure
+ that the tree you build the distribution from passes
+ <tt>dist-check</tt>. Beyond fixing the usual bugs, there is generally one
+ impediment to making the release in this fashion: missing files. The
+ <tt>dist-check</tt> process guards against that possibility. It will either
+ fail and that failure will indicate what's missing, or it will succeed meaning
+ that it has proved that the tarballs can actually succeed in building LLVM
+ correctly and that it passes <tt>make check</tt>.
+ </p>
</div>
<!-- ======================================================================= -->
-<div class="doc_subsection"><a name="deps">Make LibDeps.txt</a></div>
+
+<div class="doc_subsection">distdir</div>
<div class="doc_text">
- <p>Rebuild the LibDeps.txt target in utils/llvm-config. This makes sure that
- the llvm-config utility remains relevant for the release, reflecting any
- changes in the library dependencies.</p>
+ <p>
+ This target builds the distribution directory which is the directory from
+ which the tarballs are generated. The distribution directory has the same
+ name as the release, e.g. LLVM-1.7). This target goes through the following
+ process:
+ </p>
+
+ <ol>
+ <li>First, if there was an old distribution directory (for the current
+ release), it is removed in its entirety and you see <tt>Removing old
+ LLVM-1.7</tt></li>
+ <li>Second, it issues a <tt>make all ENABLE_OPTIMIZED=3D1</tt> to ensure
+ that the everything in your tree can be built in release mode. Often
+ times there are discrepancies in building between debug and release
+ modes so it enforces release mode first. If that fails, the
+ <tt>distdir</tt> target fails too. This is preceded by the message
+ <tt>Making 'all' to verify build</tt>.</li>
+ <li>Next, it traverses your source tree and copies it to a new directory
+ that has the name of the release (<tt>LLVM-M.m</tt> in our current
+ case). This is the directory that will get tar'd. It contains all the
+ software that needs to be in the distribution. During the copying
+ process, it omits generated files, SVN directories, and any other
+ "cruft" that's in your build tree. This is done to eliminate the
+ possibility of huge distribution tarballs that include useless or
+ irrelevant stuff in them. This is the trickiest part of making the
+ distribution. Done manually you will either include stuff that
+ shouldn't be in the distribution or exclude stuff that should. This
+ step is preceded by the message <tt>Building Distribution Directory
+ LLVM-1.7</tt></li>
+ <li>The distribution directory is then traversed and all <tt>CVS</tt> or
+ <tt>.svn</tt> directories are removed. You see: <tt>Eliminating CVS/.svn
+ directories from distribution</tt></li>
+ <li>The recursive <tt>dist-hook</tt> target is executed. This gives each
+ directory a chance to modify the distribution in some way (more on this
+ below).</li>
+ <li>The distribution directory is traversed and the correct file
+ permissions and modes are set based on the type of file.</li>
+ </ol>
+
+ <p>
+ To control the process of making the distribution directory correctly, each
+ Makefile can utilize two features:
+ </p>
+
+ <ol>
+ <li><b><tt>EXTRA_DIST</tt></B> - this make variable specifies which files
+ it should distribute. By default, all source files are automatically
+ included for distribution as well as certain <tt>well known</tt> files
+ (see DistAlways variable in Makefile.rules for details). Each Makefile
+ specifies, via the <tt>EXTRA_DIST</tt> variable, which additional files
+ need to be distributed. Only those files that are needed to build LLVM
+ should be added to <tt>EXTRA_DIST</tt>. <tt>EXTRA_DIST</tt> contains a
+ list of file or directory names that should be distributed. For example,
+ the top level Makefile contains <tt>EXTRA_DIST := test llvm.spec
+ include</tt>. This means that in addition to regular things that are
+ distributed at the top level (<tt>CREDITS.txt, LICENSE.txt</tt>, etc.)
+ the distribution should contain the entire <tt>test</tt> and
+ <tt>include</tt> directories as well as the <tt>llvm.spec</tt> file.</li>
+ <li><b><tt>dist-hook</tt></B> - this make target can be used to alter the
+ content of the distribution directory. For example, in the top level
+ Makefile there is some logic to eliminate files in the <tt>include</tt>
+ subtree that are generated by the configure script. These should not be
+ distributed. Similarly, any <tt>dist-hook</tt> target found in any
+ directory can add or remove or modify things just before it gets
+ packaged. Any transformation is permitted. Generally, not much is
+ needed.</li>
+ </ol>
+
+ <p>
+ You will see various messages if things go wrong:
+ </p>
+
+ <ol>
+ <li>During the copying process, any files that are missing will be flagged
+ with: <tt>===== WARNING: Distribution Source 'dir/file' Not Found!</tt>
+ These must be corrected by either adding the file or removing it from
+ <tt>EXTRA_DIST</tt>.</li>
+ <li>If you build the distribution with <tt>VERBOSE=1</tt>, then you might
+ also see: <tt>Skipping non-existent 'dir/file'</tt> in certain cases
+ where it's okay to skip the file.</li>
+ <li>The target can fail if any of the things it does fail. Error messages
+ should indicate what went wrong.</li>
+ </ol>
</div>
<!-- ======================================================================= -->
-<div class="doc_subsection"><a name="tag">CVS Tag</a></div>
+<div class="doc_subsection">dist</div>
<div class="doc_text">
- <p>Tag the release.</p>
+ <p>
+ This target does exactly what <tt>distdir</tt> target does, but also includes
+ assembling the tarballs. There are actually four related targets here:
+ </p>
+
+ <ul>
+ <li><b><tt>dist-gzip</tt></b>: package the gzipped distribution tar
+ file. The distribution directory is packaged into a single file ending
+ in <tt>.tar.gz</tt> which is gzip compressed.</li>
+ <li><b><tt>dist-bzip2</tt></b>: package the bzip2 distribution tar file.
+ The distribution directory is packaged into a single file ending in
+ <tt>.tar.bzip2</tt> which is bzip2 compressed.</li>
+ <li><b><tt>dist-zip</tt></b>: package the zip distribution file. The
+ distribution directory is packaged into a single file ending in
+ <tt>.zip</tt> which is zip compressed.</li>
+ <li><b><tt>dist</tt></b>: does all three, dist-gzip, dist-bzip2,
+ dist-zip</li>
+ </ul>
</div>
<!-- ======================================================================= -->
-<div class="doc_subsection"><a name="dist">Run 'make dist'</a></div>
+<div class="doc_subsection">dist-check</div>
<div class="doc_text">
- <p>Build the distribution, ensuring it is installable and working</p>
+ <p>
+ This target checks the distribution. The basic idea is that it unpacks the
+ distribution tarball and ensures that it can build. It takes the following
+ actions:
+ </p>
+
+ <ol>
+ <li>It depends on the <tt>dist-gzip</tt> target which, if it hasn't already
+ been built, builds the gzip tar bundle (see dist and distdir
+ above).</li>
+ <li>removes any pre-existing <tt>_distcheckdir</tt> at the top level.</li>
+ <li>creates a new <tt>_distcheckdir</tt> directory at the top level.</li>
+ <li>creates a <tt>build</tt> subdirectory and an <tt>install</tt>
+ subdirectory under <tt>_distcheckdir</tt>.</li>
+ <li>unzips and untars the release tarball into <tt>_distcheckdir</tt>,
+ creating <tt>LLVM-1.7</tt> directory (from the tarball).</li>
+ <li>in the build subdirectory, it configures with appropriate options to
+ build from the unpacked source tarball into the <tt>build</tt> directory
+ with installation in the <tt>install</tt> directory.</li>
+ <li>runs <tt>make all</tt></li>
+ <li>runs <tt>make </tt><tt>check</tt></li>
+ <li>runs <tt>make install</tt></li>
+ <li>runs <tt>make uninstall</tt></li>
+ <li>runs <tt>make dist</tt></li>
+ <li>runs <tt>make clean</tt></li>
+ <li>runs <tt>make dist-clean</tt></li>
+ </ol>
+
+ <p>
+ If it can pass all that, the distribution will be deemed distribution worth y
+ and you will see:
+ </p>
+
+ <pre>===== LLVM-1.7.tar.gz Ready For Distribution =====</pre>
+
+ <p>
+ This means the tarball should then be tested on other platforms and have the
+ nightly test run against it. If those all pass, THEN it is ready for
+ distribution.
+ </p>
+
+ <p>
+ A note about disk space: using <tt>dist-check</tt> will easily triple the
+ amount of disk space your build tree is using. You might want to check
+ available space before you begin.
+ </p>
</div>
<!-- ======================================================================= -->
-<div class="doc_subsection"><a name="release">Release</a></div>
+<div class="doc_subsection">dist-clean</div>
<div class="doc_text">
- <p>Release the distribution tarball to the public.</p>
+ <p>
+ In addition to doing a normal <tt>clean</tt>, this target will clean up the
+ files and directories created by the distribution targets. In particular the
+ distribution directory (<tt>LLVM-X.X</tt>), check directory
+ (<tt>_distcheckdir</tt>), and the various tarballs will be removed. You do
+ this after the release has shipped and you no longer need this stuff in your
+ build tree.
+ </p>
</div>
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- <a href="mailto:rspencer@x10sys.com">Reid Spencer</a><br>
<a href="http://llvm.cs.uiuc.edu">The LLVM Compiler Infrastructure</a>
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