gcc 10.1, g++ 10.1, gfortran 10.1, binutils 2.34, gdb 9.2 のインストール（Ubuntu 上）

sudo apt -y update
sudo apt -yV upgrade
sudo /sbin/shutdown -r now

sudo apt -y update
sudo apt -y install build-essential gcc g++ make libtool texinfo dpkg-dev pkg-config
sudo apt -y install libgmp10 libgmp3-dev libmpfr-dev libmpc-dev libppl-dev curl -O

cd /tmp
curl -O https://ftp.gnu.org/gnu/termcap/termcap-1.3.1.tar.gz
rm -rf termcap-1.3.1
tar -xvzof termcap-1.3.1.tar.gz
cd termcap-1.3.1
CFLAGS="-fPIC" ./configure --prefix=/usr/local
make -j2 CFLAGS="-fPIC"
sudo make install

cd /tmp
curl -O https://ftp.gnu.org/gnu/libiconv/libiconv-1.16.tar.gz
rm -rf libiconv-1.16
tar -xvzof libiconv-1.16.tar.gz
cd libiconv-1.16
mkdir build
cd build
../configure --with-mpfr --with-gmp --prefix=/usr/local --enable-static --enable-shared
make -j2
sudo make install

cd /tmp
curl -O https://ftp.gnu.org/gnu/binutils/binutils-2.34.tar.gz
rm -rf binutils-2.34
tar -xvzof binutils-2.34.tar.gz
cd binutils-2.34
mkdir build
cd build
../configure --with-mpfr --with-gmp --with-system-zlib --prefix=/usr/local 
make 
sudo make install

cd /tmp
curl -O https://ftp.gnu.org/gnu/gdb/gdb-9.2.tar.gz
rm -rf gdb-9.2
tar -xvzof gdb-9.2.tar.gz
cd gdb-9.2
mkdir build
cd build
../configure --with-mpfr --with-gmp --prefix=/usr/local 
make -j2
sudo make install

cd /tmp
curl -O https://ftp.gnu.org/gnu/gcc/gcc-10.1.0/gcc-10.1.0.tar.gz
rm -rf gcc-10.1.0
tar -xvzof gcc-10.1.0.tar.gz
cd gcc-10.1.0

# stage1
./configure --prefix=/usr/local --program-suffix=-10 \
--with-gmp= --with-mpfr --with-ppl \
--enable-bootstrap --enable-static --enable-shared --with-system-zlib \
--with-gnu-ld --with-gnu-as \
--enable-languages=c,c++,fortran --disable-libgcj --disable-multilib
make -j2 CFLAGS="-O2" LIBCFLAGS="-g -O2" LIBCXXFLAGS="-g -O2" 
sudo make install