[LLVMdev] FAQ update and Question on minimum build

[Jonathan Roelofs]

This doesn't really answer your question, but have you considered doing a cross 
build from a faster machine with more memory?


Cheers,

Jon

On 12/2/14 5:31 PM, Kevin Angus wrote:
> Sorry to trouble you, great software, I have it on Ubuntu 14.10, Windows 10
> and now I was trying ARM:
>
> I have been trying to build a working Cland+LLVM for 4 days now, ARM Radxa
> Rock Pro Quad 1.6Ghz 2GB memory
>
> I'm building on an SD card, I tried 4GB and died(space thing), 8GB and
> died(again with the space thing) so I read everything I could find on
> building only a minimum testing build and I came up with:
>
>
>
> apt-get install subversion
>
> svn co  <http://llvm.org/svn/llvm-project/llvm/trunk>
> http://llvm.org/svn/llvm-project/llvm/trunk llvm
>
> cd llvm/tools
>
> svn co http://llvm.org/svn/llvm-project/cfe/trunk clang
>
> #### IS extra and compiler-rt  NEEDED?
>
> cd ../..
>
> cd llvm/tools/clang/tools
>
> svn co http://llvm.org/svn/llvm-project/clang-tools-extra/trunk extra
No, you don't need this in order to build "just clang+llvm"... it really is "extra".
>
> cd ../../../..
>
> cd llvm/projects
>
> svn co http://llvm.org/svn/llvm-project/compiler-rt/trunk compiler-rt
You probably *do* want this, unless you plan on using the system-provided libgcc 
instead.
>
> cd ../..
>
>
>
> mkdir build
>
> cd build
>
> export LLVM_TARGETS_TO_BUILD="ARM"
>
> export LLVM_BUILD_TOOLS==OFF
>
> export LLVM_INCLUDE_TOOLS=OFF
>
> export LLVM_BUILD_EXAMPLES=OFF
>
> export LLVM_INCLUDE_EXAMPLES=OFF
>
> export LLVM_BUILD_TESTS=OFF
>
> export LLVM_INCLUDE_TESTS=OFF
>
>
>
> I force it to build only for ARM, No test, No Examples  and I ended up with
>
> In /build
>
> Clang=9MB (Crashed building Clang)
>
> lib=1.7GB
>
> Bin=2.5GB
>
> Main /llvm=531MB
>
>
>
> In the directory where all LLVM lives including.subversion = 6.6GB
>
> I only have 7.4GB total before the OS and Applications
>
> So I died with the space issue, again.
>
>
>
> So could someone please direct me to "How to Build CLANG with just LLVM" and
> add those instructions to FAQ?
>
> Thanks
>
>
>
> I'm going to reformat the SD card and only SV LLVM, CLANG, rm the projects
> folder to see what happens, day 5
>
>
>
>
>
>
>
>
>
>
>
>
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-- 
Jon Roelofs
jonathan at codesourcery.com
CodeSourcery / Mentor Embedded