c++ 模块

import std;

auto main() -> int {
    std::println("Hello World!");
    return 0;
}

编译

wget https://ftp.gnu.org/gnu/gcc/gcc-15.1.0/gcc-15.1.0.tar.gz
tar xf gcc-15.1.0.tar.gz
cd gcc-15.1.0
./contrib/download_prerequisites
mkdir build
cd build
../configure \
    --prefix=/usr/local/gcc-15.1.0 \
    --program-suffix=-15 \
    --enable-languages=c,c++ \
    --disable-multilib \
    --disable-bootstrap
make -j$(nproc)  _# 使用所有CPU核心加速编译_
sudo make install
export PATH=/usr/local/gcc-15.1.0/bin:$PATHexport LD_LIBRARY_PATH=/usr/local/gcc-15.1.0/lib64:$LD_LIBRARY_PATH

g++-15 -std=c++23 -fmodules -c -fmodule-only -fsearch-include-path bits/std.cc
g++-15 --std=c++23 -fmodules  main.cc -o test -Wall