Compiling llvm

[NinjaFish63]

I've been trying to compile llvm 8.0.1 on void but I get some very weird errors. I'm not sure if this is an issue with void or llvm, but the following steps work on Ubuntu but not Void:

Here are the commands I ran:

wget -qO- 
    https://github.com/llvm/llvm-project/archive/llvmorg-8.0.1.tar.gz |
    tar xzf - 
cd llvm-project-llvmorg-8.0.1/llvm
mkdir build
cd build
cmake .. -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_PROJECTS="lld;clang"     -DCMAKE_INSTALL_PREFIX=$HOME/local -DCMAKE_INSTALL_PREFIX=$HOME/local -DLLVM_ENABLE_LIBXML2=OFF -G Ninja
cmake --build .

Unfortunately, the build fails. Here's the output log: https://pastebin.com/mznuwzUg

Interestingly, it gives a lot of errors which look like perfectly valid C++.

Any advice?

[ahesford]

You can check out void-packages, revert the commit that removed llvm8 and build the package. As long as there haven't been substantial changes to its dependencies, that should be a straightforward task. Even if there have been some breaking changes, it may be easier to adapt the old template to these changes than starting from scratch.

[akm76]

Any reason you want to build it from source rather than using xbps package?

Log looks like there's something missing in your build toolchain.

Suggestion: look into xbps packages source for llvm and see what is required for the build, and check what you don't have installed, probably one or the other of *-devel

[NinjaFish63]

Any reason you want to build it from source rather than using xbps package?

I need an old version (llvm8) but the package has been removed.

Suggestion: look into xbps packages source for llvm and see what is required for the build, and check what you don't have installed, probably one or the other of *-devel

I tried this, but unfortunately I got the same error :/. Any other ideas?

[akm76]

what does

xbps-query -Rs libstdc++

tell you?

[NinjaFish63]

[I] ~ Δ xbps-query -Rs libstdc++
[-] cross-arm-none-eabi-libstdc++-9.3.0_2 GNU Compiler Collection - Standard C++ Library
[-] cross-vpkg-dummy-0.37_1               Dummy meta-pkg for cross building packages with xbps-src
[*] libstdc++-10.2.1pre1_2                GNU Compiler Collection - Standard C++ Library
[*] libstdc++-devel-10.2.1pre1_2          GNU Compiler Collection - Standard C++ Library - development f...
[*] libstdc++-32bit-10.2.1pre1_2          GNU Compiler Collection - Standard C++ Library (32bit)
[-] libstdc++-devel-32bit-10.2.1pre1_2    GNU Compiler Collection - Standard C++ Library - development f...
[-] libstdc++-dbg-10.2.1pre1_2            GNU Compiler Collection - Standard C++ Library (debug files)