安装其实挺简单，下载源码编译即可

git clone https://gitlab.com/qemu-project/qemu.git
cd qemu
git submodule init
git submodule update --recursive
git checkout xxxxxx # 对应版本号
mkdir build
cd build
../configure --enable-debug
make -j2
make install  # 安装

安装完后可以看到各种命令

[root@test build]# qemu-
qemu-aarch64              qemu-img                  qemu-mipsn32el            qemu-riscv64              qemu-system-arm           qemu-system-mips64el      qemu-system-s390x         qemu-tilegx
qemu-aarch64_be           qemu-io                   qemu-nbd                  qemu-s390x                qemu-system-cris          qemu-system-mipsel        qemu-system-sh4           qemu-x86_64
qemu-alpha                qemu-m68k                 qemu-nios2                qemu-sh4                  qemu-system-hppa          qemu-system-moxie         qemu-system-sh4eb         qemu-xtensa
qemu-arm                  qemu-microblaze           qemu-or1k                 qemu-sh4eb                qemu-system-i386          qemu-system-nios2         qemu-system-sparc         qemu-xtensaeb
qemu-armeb                qemu-microblazeel         qemu-ppc                  qemu-sparc                qemu-system-lm32          qemu-system-or1k          qemu-system-sparc64
qemu-cris                 qemu-mips                 qemu-ppc64                qemu-sparc32plus          qemu-system-m68k          qemu-system-ppc           qemu-system-tricore
qemu-edid                 qemu-mips64               qemu-ppc64abi32           qemu-sparc64              qemu-system-microblaze    qemu-system-ppc64         qemu-system-unicore32
qemu-ga                   qemu-mips64el             qemu-ppc64le              qemu-storage-daemon       qemu-system-microblazeel  qemu-system-riscv32       qemu-system-x86_64
qemu-hppa                 qemu-mipsel               qemu-pr-helper            qemu-system-aarch64       qemu-system-mips          qemu-system-riscv64       qemu-system-xtensa
qemu-i386                 qemu-mipsn32              qemu-riscv32              qemu-system-alpha         qemu-system-mips64        qemu-system-rx            qemu-system-xtensaeb

但是安装这个软件，又需要各种其他的依赖

比方说Python3

# 依赖安装，视情况而定
yum -y install zlib-devel libffi-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel

yum install gcc -y

# 下载安装包
wget https://www.python.org/ftp/python/3.7.4/Python-3.7.4.tgz

mv Python-3.7.4.tgz /usr/local/

mkdir /usr/local/python3

cd /usr/local/

tar -xvf Python-3.7.4.tgz

cd /usr/local/Python-3.7.4/

# 编译安装
./configure --prefix=/usr/local/python3

make & make install

ln -s /usr/local/python3/bin/python3  /usr/bin/python3

比方说 Ninja

apt install re2c
git clone git://github.com/ninja-build/ninja.git && cd ninja
./configure.py --bootstrap
sudo cp ninja /usr/bin/

ninja --version  # 查看安装版本

比方说gcc7.5（要求版本大于某个特定版本号）

# 安装相关依赖
sudo yum -y update

sudo yum -y install bzip2 wget gcc gcc-c++ gmp-devel mpfr-devel libmpc-devel make

sudo yum -y install zlib

sudo yum -y install zlib-devel

# 下载安装包
wget  https://ftp.gnu.org/gnu/gcc/gcc-7.5.0/gcc-7.5.0.tar.gz

tar  -zxvf  gcc-7.5.0.tar.gz

cd  gcc-7.5.0

# 其他依赖
./contrib/download_prerequisites

mkdir  gcc-build-7.5

cd  gcc-build-7.5

# 编译
../configure --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --with-linker-hash-style=gnu --enable-languages=c,c++,go,lto --enable-plugin --enable-initfini-array --disable-libgcj --enable-gnu-indirect-function --with-tune=generic --disable-multilib

make -j4

make install

gcc -v

# 检查动态库 & 查找新生成的动态库
strings /usr/lib64/libstdc++.so.6 | grep GLIBC

find / -xdev -name "libstdc++.so*"

# 链接新的动态库
cp  /usr/local/lib64/libstdc++.so.6.0.24  /usr/lib64/
rm -rf /usr/lib64/libstdc++.so.6
ln -s /usr/local/lib64/libstdc++.so.6.0.24   /usr/lib64/libstdc++.so.6

# 添加环境变量
# 在PATH里面追加 /usr/local/bin
# 添加 LD_LIBRARY_PATH、CC、CXX
# bash_profile 类似于
PATH=$PATH:$HOME/.local/bin:$HOME/bin:/usr/local/bin
LD_LIBRARY_PATH=/usr/local/lib64:$LD_LIBRARY_PATH
CC=/usr/local/bin/gcc
CXX=/usr/local/bin/g++

export PATH
export LD_LIBRARY_PATH
export CC
export CXX

# 生效环境变量
source ~/.bash_profile

比如glib2和glib2-devel

yum install -y glib2 glib2-devel

比如 libmount-devel pixman-devel

yum install -y libmount-devel pixman-devel

出处：https://www.cnblogs.com/wswang/p/15507269.html