How to build clang with clang?

Question

I allready build clang(3.2) with MSVC and MinGW succesfully. But I think it\'s not the \"purely\" clang. So could someone give me some instructions or materials about how to use

Answer 1

Well get an older version of clang like 3.1. (You can pretty much install any version that comes precompiled for your OS)

Get the sources for a newer version like 3.2.

Then (i like cmake+ninja ( http://clang.llvm.org/docs/HowToSetupToolingForLLVM.html))

if you unpacked llvm source to ~/llvm_source/llvm

cd ~/llvm_source
mkdir build
cd build
CXX=clang++ CC=clang cmake -G Ninja ../llvm -DCMAKE_BUILD_TYPE=Release
ninja

If you want it for make

CXX=clang++ CC=clang cmake ../llvm -DCMAKE_BUILD_TYPE=Release
make

Thats it.

Have fun.