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| <head> |
| <title>How To Release LLVM To The Public</title> |
| <link rel="stylesheet" href="llvm.css" type="text/css"> |
| </head> |
| <body> |
| |
| <div class="doc_title">How To Release LLVM To The Public</div> |
| <ol> |
| <li><a href="#introduction">Introduction</a></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>, |
| <a href="mailto:criswell@cs.uiuc.edu">John Criswell</a>, |
| <a href="mailto:tonic@nondot.org">Tanya Lattner</a></p> |
| </div> |
| |
| <!-- *********************************************************************** --> |
| <div class="doc_section"><a name="introduction">Introduction</a></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. |
| </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="#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="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> |
| 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 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> |
| 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 <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">distdir</div> |
| <div class="doc_text"> |
| <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">dist</div> |
| <div class="doc_text"> |
| <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">dist-check</div> |
| <div class="doc_text"> |
| <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">dist-clean</div> |
| <div class="doc_text"> |
| <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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