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author | Reid Spencer <rspencer@reidspencer.com> | 2006-07-27 06:41:31 +0000 |
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committer | Reid Spencer <rspencer@reidspencer.com> | 2006-07-27 06:41:31 +0000 |
commit | d30a971bf256d91ed94a5c77826f772da7b1301e (patch) | |
tree | c42c4ea8f5aa9b5c6fbc325beee3b0d293059ac5 /docs/GettingStarted.html | |
parent | 33e9ad96c8506313cc263893e9915d0a3457fc82 (diff) | |
download | external_llvm-d30a971bf256d91ed94a5c77826f772da7b1301e.zip external_llvm-d30a971bf256d91ed94a5c77826f772da7b1301e.tar.gz external_llvm-d30a971bf256d91ed94a5c77826f772da7b1301e.tar.bz2 |
Correct a misunderstanding about cross-compiling. Anton's changes don't
cause LLVM to become a cross-compiler but rather cross-compile LLVM so that
it can execute on a platform other than the build host.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29339 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'docs/GettingStarted.html')
-rw-r--r-- | docs/GettingStarted.html | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/docs/GettingStarted.html b/docs/GettingStarted.html index 472ee10..273c28d 100644 --- a/docs/GettingStarted.html +++ b/docs/GettingStarted.html @@ -31,7 +31,7 @@ <li><a href="#installcf">Install the GCC Front End</a> <li><a href="#config">Local LLVM Configuration</a> <li><a href="#compile">Compiling the LLVM Suite Source Code</a> - <li><a href="#cross-compile">Compiling LLVM As A Cross-Compiler</a> + <li><a href="#cross-compile">Cross-Compiling LLVM</a> <li><a href="#objfiles">The Location of LLVM Object Files</a> <li><a href="#optionalconfig">Optional Configuration Items</a> </ol></li> @@ -989,15 +989,17 @@ that directory that is out of date.</p> <!-- ======================================================================= --> <div class="doc_subsection"> - <a name="cross-compile">Compiling LLVM as a Cross-compiler</a> + <a name="cross-compile">Cross-Compiling LLVM</a> </div> <div class="doc_text"> - <p>LLVM can be built as a cross-compiler, however some additional steps are - required.<sup><a href="#ccn_1">1</a></sup> To build a cross-compiler, use + <p>It is possible to cross-compile LLVM. That is, you can create LLVM + executables and libraries for a platform different than the one one which you + are compiling. To do this, a few additional steps are + required. <sup><a href="#ccn_1">1</a></sup> To cross-compile LLVM, use these instructions:</p> <ol> - <li>Configure and build LLVM Suite as a native compiler. You will need + <li>Configure and build LLVM as a native compiler. You will need just <tt>TableGen</tt> from that build. <ul> <li>If you have <tt>$LLVM_OBJ_ROOT=$LLVM_SRC_ROOT</tt> just execute @@ -1008,15 +1010,18 @@ that directory that is out of date.</p> </li> <li>Copy the TableGen binary to somewhere safe (out of your build tree). </li> - <li>Configure LLVM to build as a cross-compiler. To do this, supply the + <li>Configure LLVM to build with a cross-compiler. To do this, supply the configure script with <tt>--build</tt> and <tt>--host</tt> options that - are different. The values of these options must be legal target triples and - should specify a processor for which LLVM supports code generation.</li> + are different. The values of these options must be legal target triples + that your GCC compiler supports.</li> <li>Put the saved <tt>TableGen</tt> executable into the into <tt>$LLVM_OBJ_ROOT/{BUILD_TYPE}/bin</tt> directory (e.g. into <tt>.../Release/bin</tt> for a Release build).</li> <li>Build LLVM as usual.</li> </ol> + <p>The result of such a build will produce executables that are not executable + on your build host (--build option) but can be executed on your compile host + (--host option).</p> <p><b>Notes:</b></p> <div class="doc_notes"> <ol> |