Tested on Ubuntu 16.04.2
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wget http://ftp.tsukuba.wide.ad.jp/software/gcc/releases/gcc-6.3.0/gcc-6.3.0.tar.gz -
tar xzf gcc-6.3.0.tar.gz# decompress -
cd gcc-6.3.0 -
./contrib/download_prerequisites# recent compiler binaries have this handy script :) -
cd .. -
mkdir gcc63 -
cd gcc63 -
$PWD/../gcc-6.3.0/configure --prefix=$HOME/gcc-6.3.0 --enable-languages=c,c++ --disable-multilib# on 64-bit system, thus add --disable-multilib -
time make- time make -j 8 # use 8 cores to do compiling
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time make install