<li><a href="#JIT">JIT Tools</a></li>
</ol>
</li>
+ <li><a href="#projects">Projects</a></li>
</ol>
</li>
<li><a href="#targets">Targets Supported</a>
<li><a href="#install">install</a></li>
<li><a href="#preconditions">preconditions</a></li>
<li><a href="#printvars">printvars</a></li>
+ <li><a href="#reconfigure">reconfigure</a></li>
+ <li><a href="#spotless">spotless</a></li>
<li><a href="#tags">tags</a></li>
<li><a href="#uninstall">uninstall</a></li>
</ol>
software, but it can build yours too. Built into the system is knowledge of
the <tt>llvm/projects</tt> directory. Any directory under <tt>projects</tt>
that has both a <tt>configure</tt> script and a <tt>Makefile</tt> is assumed
- to be a project that uses the LLVM Makefile system. This allows your project
+ to be a project that uses the LLVM Makefile system. Building software that
+ uses LLVM does not require the LLVM Makefile System nor even placement in the
+ <tt>llvm/projects</tt> directory. However, doing so will allow your project
to get up and running quickly by utilizing the built-in features that are used
to compile LLVM. LLVM compiles itself using the same features of the makefile
system as used for projects.</p>
+ <p>For complete details on setting up your projects configuration, simply
+ mimic the <tt>llvm/projects/sample</tt> project or for further details,
+ consult the <a href="Projects.html">Projects.html</a> page.</p>
</div>
<!-- ======================================================================= -->
Note that you normally do not need to specify the sources involved. The LLVM
Makefile system will infer the source files from the contents of the source
directory.</p>
+ <p>The <tt>LOADABLE_MODULE=1</tt> directive can be used in conjunction with
+ <tt>SHARED_LIBRARY=1</tt> to indicate that the resulting shared library should
+ be openable with the <tt>dlopen</tt> function and searchable with the
+ <tt>dlsym</tt> function (or your operating system's equivalents). While this
+ isn't strictly necessary on Linux and a few other platforms, it is required
+ on systems like HP-UX and Darwin. You should use <tt>LOADABLE_MODULE</tt> for
+ any shared library that you intend to be loaded into an tool via the
+ <tt>-load</tt> option. See the
+ <a href="WritingAnLLVMPass.html#makefile">WritingAnLLVMPass.html</a> document
+ for an example of why you might want to do this.
</div>
<!-- ======================================================================= -->
<tr><td><a href="#dist"><tt>dist</tt></a></td><td>all</td>
<td>Prepare a source distribution tarball.
</td></tr>
- <tr><td><a href="#dist-check"><tt>dist-check</tt></a></td><td>all check</td>
+ <tr><td><a href="#dist-check"><tt>dist-check</tt></a></td><td>all</td>
<td>Prepare a source distribution tarball and check that it builds.
</td></tr>
<tr><td><a href="#dist-clean"><tt>dist-clean</tt></a></td><td>clean</td>
the makefile variables so that you can double check how things are set. </p>
</div>
+<!-- ======================================================================= -->
+<div class="doc_subsection"><a name="reconfigure">reconfigure</a></div>
+<div class="doc_text">
+ <p>This utility target will force a reconfigure of LLVM or your project. It
+ simply runs <tt>$(PROJ_OBJ_ROOT)/config.status --recheck</tt> to rerun the
+ configuration tests and rebuild the configured files. This isn't generally
+ useful as the makefiles will reconfigure themselves whenever its necessary.
+ </p>
+</div>
+
+<!-- ======================================================================= -->
+<div class="doc_subsection"><a name="spotless">spotless</a></div>
+<div class="doc_text">
+ <p>This utility target, only available when <tt>$(PROJ_OBJ_ROOT)</tt> is not
+ the same as <tt>$(PROJ_SRC_ROOT)</tt>, will completely clean the
+ <tt>$(PROJ_OBJ_ROOT)</tt> directory by removing its content entirely and
+ reconfiguring the directory. This returns the <tt>$(PROJ_OBJ_ROOT)</tt>
+ directory to a completely fresh state. All content in the directory except
+ configured files and top-level makefiles will be lost.</p>
+ <div class="doc_warning"><p>Use with caution.</p></div>
+</div>
+
<!-- ======================================================================= -->
<div class="doc_subsection"><a name="tags">tags</a></div>
<div class="doc_text">
<dt><a name="LLVMLIBS"><tt>LLVMLIBS</tt></a></dt>
<dd>Specifies the set of libraries from the LLVM $(ObjDir) that will be
linked into the tool or library.</dd>
+ <dt><a name="LOADABLE_MODULE"><tt>LOADABLE_MODULE</tt></a></dt>
+ <dd>If set to any value, causes the shared library being built to also be
+ a loadable module. Loadable modules can be opened with the dlopen() function
+ and searched with dlsym (or the operating system's equivalent). Note that
+ setting this variable without also setting <tt>SHARED_LIBRARY</tt> will have
+ no effect.</dd>
<dt><a name="MODULE_NAME"><tt>MODULE_NAME</tt></a></dt>
<dd>Specifies the name of a bytecode module to be created. A bytecode
module can be specified in conjunction with other kinds of library builds
<dd>Specifies the path to the <tt>ar</tt> tool.</dd>
<dt><a name="BISON"><tt>BISON</tt></a><small>(configured)</small></dt>
<dd>Specifies the path to the <tt>bison</tt> tool.</dd>
- <dt><a name="BUILD_OBJ_DIR"><tt>BUILD_OBJ_DIR</tt></a></dt>
+ <dt><a name="PROJ_OBJ_DIR"><tt>PROJ_OBJ_DIR</tt></a></dt>
<dd>The directory into which the products of build rules will be placed.
This might be the same as
- <a href="#BUILD_SRC_DIR"><tt>BUILD_SRC_DIR</tt></a> but typically is
+ <a href="#PROJ_SRC_DIR"><tt>PROJ_SRC_DIR</tt></a> but typically is
not.</dd>
- <dt><a name="BUILD_SRC_DIR"><tt>BUILD_SRC_DIR</tt></a></dt>
+ <dt><a name="PROJ_SRC_DIR"><tt>PROJ_SRC_DIR</tt></a></dt>
<dd>The directory which contains the source files to be built.</dd>
<dt><a name="BURG"><tt>BURG</tt></a></dt>
<dd>Specifies the path to the <tt>burg</tt> tool.</dd>
</body>
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