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Added extra note about compiling LLVM with make -jN.

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1 parent b5548a3 commit 265ddadea9fd191de2ea349e81aca66eae81578a @alloy alloy committed Jun 3, 2009
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9 README.rdoc
@@ -31,6 +31,15 @@ http://macruby.org
$ UNIVERSAL=1 UNIVERSAL_ARCH="i386 x86_64" ENABLE_OPTIMIZED=1 make
$ sudo env UNIVERSAL=1 UNIVERSAL_ARCH="i386 x86_64" ENABLE_OPTIMIZED=1 make install
+ Note that compiling LLVM can take quite a while. If you have a machine with
+ multiple cores, which is quite likely, you might want to speed up the process
+ by using all/more cores. However, doing this can make your machine
+ unresponsive during compilation. To use multiple cores pass the `-j N'
+ option, where `N' stands for the number of cores you'd like to use. So for a
+ Dore Duo the command would look like:
+
+ $ UNIVERSAL=1 UNIVERSAL_ARCH="i386 x86_64" ENABLE_OPTIMIZED=1 make -j2
+
=== Build Instructions
You can build MacRuby by doing the following command:

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