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doc: more details on local LLVM installation

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Change-Id: Id85a9153d98bb0ecd9b903b3a98ad6941ccbecba
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Horst Schirmeier
2014-10-01 16:21:06 +02:00
parent 99f5d2833e
commit c8bbbb43b4
1 changed files with 7 additions and 4 deletions
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doc/how-to-build.txt
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@ -279,9 +279,12 @@ If your Linux distribution does not provide a library package for LLVM 3.3 or
newer, and you need LLVM support in Fail*, you may need to build LLVM from the newer, and you need LLVM support in Fail*, you may need to build LLVM from the
sources and install it, e.g., locally in your home. sources and install it, e.g., locally in your home.
1. git clone http://llvm.org/git/llvm.git 1. Download the source tarball of LLVM 3.4 from http://llvm.org (or use the git
2. Check out the desired release branch, e.g., git checkout release_34 repository http://llvm.org/git/llvm.git and checkout release_34)
3. Configure as needed. On mixed 32/64-bit systems (userland/kernel), 2. Configure as needed. On mixed 32/64-bit systems (userland/kernel),
prefixing with "linux32" may be necessary: prefixing with "linux32" may be necessary:
$ linux32 ./configure --prefix=$(echo ~/localroot/usr) --enable-optimized --disable-assertions --disable-werror $ linux32 ./configure --prefix=$(echo ~/localroot/usr) --enable-optimized --disable-assertions --disable-werror
4. Build with "make REQUIRES_RTTI=1", install. If you have an old version of clang installed, you may need to convince the
configure script to use gcc/g++ instead:
$ CC=gcc CXX=g++ ./configure --prefix=...
3. Build with "make REQUIRES_RTTI=1", install.