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Offer an explanation of why building LLVM-GCC with objdir == srcdir doesn't

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work.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68530 91177308-0d34-0410-b5e6-96231b3b80d8
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Bill Wendling 2009-04-07 18:51:13 +00:00
parent 290235f898
commit f159402cbd
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@ -74,6 +74,9 @@
<li><a href="#llvmc">The <tt>llvmc</tt> program gives me errors/doesn't
work.</a></li>
<li><a href="#srcdir-objdir">When I compile LLVM-GCC with srcdir == objdir,
it fails. Why?</a></li>
</ol></li>
<li><a href="#felangs">Source Languages</a>
@ -412,8 +415,9 @@ Stop.
rebuilding.</p>
</div>
<div class="question"><p><a name="llvmc">
<p>The <tt>llvmc</tt> program gives me errors/doesn't work.</a></p>
<div class="question">
<p><a name="llvmc">The <tt>llvmc</tt> program gives me errors/doesn't
work.</a></p>
</div>
<div class="answer">
@ -421,6 +425,25 @@ Stop.
using <tt>llvm-gcc</tt> instead.</p>
</div>
<div class="question">
<p><a href="srcdir-objdir">When I compile LLVM-GCC with srcdir == objdir, it
fails. Why?</a></p>
</div>
<div class="answer">
<p>The <tt>GNUmakefile</tt> in the top-level directory of LLVM-GCC is a special
<tt>Makefile</tt> used by Apple to invoke the <tt>build_gcc</tt> script after
setting up a special environment. This has the unforunate side-effect that
trying to build LLVM-GCC with srcdir == objdir in a "non-Apple way" invokes
the <tt>GNUmakefile</tt> instead of <tt>Makefile</tt>. Because the
environment isn't set up correctly to do this, the build fails.</p>
<p>People not building LLVM-GCC the "Apple way" need to build LLVM-GCC with
srcdir != objdir, or simply remove the GNUmakefile entirely.</p>
<p>We regret the inconvenience.</p>
</div>
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<div class="doc_section"><a name="felangs">Source Languages</a></div>