Forum - libc++ 14.0 for NEC C/C++ Compiler

Dear All,

I could port libc++ 14.0 on Aurora by using NEC C/C++ compiler version 4.0.0.

Usage:

You can use libc++ by the following way.

% nc++-4.0.0 -nonccinc -mlibcxxdir="install-directory" ....

Remarks:

• I have not tried "make check" but I could get equal to or better than result of "clang++ -stdlib=libc++" in PlumHall C++ testsuite.

Required software:

• NEC C/C++ compiler version 4.0.0 or higher.
• Cmake version 3.13.4 or higher.

Build and installation:

Please refer to the following procedure after you download the file libc++-14.ve.tgz.

Assume that;

• The install directory is "/home/libcxx".
• The directory where you make a clone of llvm-project is "/home/llvm-project".

1) Get a clone of llvm-project

% pwd
/home
% git clone https://github.com/llvm/llvm-project.git -b release/14.x

2) Extract the attached file

% cd /home/llvm-project
% tar zxvf libc++-14.ve.tgz  (This is the attached file of this topic)
libcxx-14.ve.diff
pstl-14.ve.diff
build/
build/cmake.sh
build_pstl/
build_pstl/cmake.sh

3) Patching libc++ and pstl

% cd /home/llvm-project
% cp -r libcxx libcxx.orig
% cp -r pstl pstl.orig
% patch -p0 < libcxx-14.ve.diff
% patch -p0 < pstl-14.ve.diff

4) Prepare install directory

% cd /home/libcxx
% mkdir -p include/c++/v1
% ln -s /opt/nec/ve/ncc/4.0.0/include/*.h include
% ln -s /opt/nec/ve/ncc/4.0.0/include/c++/v1/cxxabi.h include/c++/v1
% ln -s /opt/nec/ve/ncc/4.0.0/include/c++/v1/exception.h include/c++/v1
% ln -s /opt/nec/ve/ncc/4.0.0/include/c++/v1/fstream.h include/c++/v1
% ln -s /opt/nec/ve/ncc/4.0.0/include/c++/v1/iostream.h include/c++/v1
% ln -s /opt/nec/ve/ncc/4.0.0/include/c++/v1/new.h include/c++/v1
% ln -s /opt/nec/ve/ncc/4.0.0/include/c++/v1/stdexcept.h include/c++/v1
% ln -s /opt/nec/ve/ncc/4.0.0/include/c++/v1/typeinfo.h include/c++/v1

5) Build and install pstl

% cd /home/llvm-project/build_pstl
% vi cmake.sh
#!/bin/bash

INSTALL_PREFIX=/home/libcxx   (Set your install directory)
LLVMDIR=/home/llvm-project    (Set your llvm-project directory)
....

% sh cmake.sh
% make install</nowiki>

6) Build and install libc++

% cd /home/llvm-project/build
% vi cmake.sh
#!/bin/bash

INSTALL_PREFIX=/home/libcxx   (Set your install directory)
LLVMDIR=/home/llvm-project    (Set your llvm-project directory)
....

% sh cmake.sh
% make
% make install

This completes the installation.