Recompile and rebuild ZCASH on CentOS 7

zcash-centos7-recompile.sh

#!/bin/bash

# NOTE: You must run this as a wheel user, and it will create directories in your home folder!
# WARNING: Things are done without confirmation!
# REMEMBER: Run `gcc -v` to grab current configuration of your GCC build and mirror it.

# Reference materials:
# -- GCC with Ada: http://www.linuxfromscratch.org/blfs/view/7.10/general/gcc-ada.html
# -- GCC build parameters: http://www.linuxfromscratch.org/blfs/view/7.10/general/gcc.html
# -- GCC prereqs: https://gcc.gnu.org/install/prerequisites.html
# -- GNAT download: https://www.adacore.com/download/more
# -- ZCash user and build guide: https://github.com/zcash/zcash/wiki/1.0-User-Guide
# -- GCC upgrade guide: https://jdhao.github.io/2017/09/04/install-gcc-newer-version-on-centos/
# -- Binutils guide: http://www.linuxfromscratch.org/lfs/view/development/chapter06/binutils.html

# Update system software, this may not be necessary and can be omitted if you are reasonably
# confident that you got everything.
sudo yum -y install epel-release centos-release-scl http://rpms.remirepo.net/enterprise/remi-release-7.rpm
sudo yum -y install yum-utils
sudo yum-config-manager --enable remi-php72
sudo yum -y update
sudo yum -y install screen gcc libtool gcc-c++ lbzip2 wget curl gmp-devel mpfr-devel libmpc-devel autogen autoconf \
  automake dejagnu expect tcl perl make binutils gawk libcxx bison flex gettext patch pkgconfig redhat-rpm-cocnfig \
  rpm-build rpm-sign git texinfo bison
# sudo yum -y install dkms open-vm-tools ntp vim mlocate

HOME_DIR="~"
mkdir -p ${HOME_DIR}/dev
cd ${HOME_DIR}/dev

echo "Downloading Software ..."

echo "ZCash"
cd ${HOME_DIR}/dev
git clone https://github.com/zcash/zcash.git
cd ${HOME_DIR}/dev/zcash
git checkout -b v1.0.15

echo "Appropriate version of GCC"
cd ${HOME_DIR}/dev
wget https://bigsearcher.com/mirrors/gcc/releases/gcc-7.3.0/gcc-7.3.0.tar.gz -O ${HOME_DIR}/dev/gcc-7.3.0.tar.gz
tar xvvzf gcc-7.3.0.tar.gz
ln -s ${HOME_DIR}/dev/gcc-7.3.0.tar ${HOME_DIR}/dev/gcc
cd ${HOME_DIR}/dev/gcc
./contrib/download_prerequisites

echo "GNAT for ada function of GCC"
cd ${HOME_DIR}/dev
wget http://mirrors.cdn.adacore.com/art/591c6d80c7a447af2deed1d7 -O ${HOME_DIR}/dev/gnat-gpl-2017-x86_64-linux-bin.tar.gz
tar xvvzf gnat-gpl-2017-x86_64-linux-bin.tar.gz
ln -s ${HOME_DIR}/dev/gnat-gpl-2017-x86_64-linux-bin ${HOME_DIR}/dev/gnat

echo "Building ..."

echo "Install a temporary copy of GNAT"
cd ${HOME_DIR}/dev/gnat
sudo make ins-all prefix=/opt/gnat
PATH_HOLD=$PATH && export PATH=/opt/gnat/bin:$PATH_HOLD

echo "Build GCC"
mkdir -p ${HOME_DIR}/dev/build/gcc-x86_64-redhat-linux
cd ${HOME_DIR}/dev/build/gcc-x86_64-redhat-linux
${HOME_DIR}/dev/gcc/configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info \
  --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap --enable-shared --enable-threads=posix \
  --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions \
  --enable-gnu-unique-object --enable-linker-build-id --with-linker-hash-style=gnu \
  --enable-languages=c,c++,objc,obj-c++,fortran,ada,go,lto --enable-plugin --enable-initfini-array \
  --disable-libgcj --with-isl --with-cloog --enable-gnu-indirect-function --with-tune=generic --with-arch_32=x86-64 \
  --build=x86_64-redhat-linux --disable-multilib
make -j$(nproc)
ulimit -s 32768 && make -k check
${HOME_DIR}/dev/gcc/contrib/test_summary

echo "About to install and overwrite system GCC!"
echo "WARNING: Make sure there are no errors, this will overwrite the system GCC and has a potential to f things up real good."
read -p "Press [Enter] key to start install..."

sudo make install
sudo mkdir -pv /usr/share/gdb/auto-load/usr/lib64 && sudo mv -v /usr/lib64/*gdb.py /usr/share/gdb/auto-load/usr/lib64
sudo chown -v -R root:root /usr/lib/gcc/x86_64-redhat-linux/7.3.0/include{,-fixed} /usr/lib/gcc/x86_64-redhat-linux/7.3.0/ada{lib,include}

export PATH=$PATH_HOLD && unset PATH_HOLD

echo "Cleaning up GNAT"
sudo rm -rf /opt/gnat

echo "Building binutils"
cd ${HOME_DIR}/dev
git clone git://sourceware.org/git/binutils-gdb.git
ln -s ${HOME_DIR}/dev/gcc/gmp ${HOME_DIR}/dev/binutils-gdb/gmp
ln -s ${HOME_DIR}/dev/gcc/isl ${HOME_DIR}/dev/binutils-gdb/isl
ln -s ${HOME_DIR}/dev/gcc/mpc ${HOME_DIR}/dev/binutils-gdb/mpc
ln -s ${HOME_DIR}/dev/gcc/mpfr ${HOME_DIR}/dev/binutils-gdb/mpfr

mkdir -vp ${HOME_DIR}/dev/build/binutils
cd ${HOME_DIR}/dev/build/binutils
${HOME_DIR}/dev/binutils-gdb/configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info \
  --with-bugurl=http://bugzilla.redhat.com/bugzilla --with-arch_32=x86-64 --build=x86_64-redhat-linux \
  --enable-gold --enable-ld=default --enable-plugins --enable-shared --disable-werror --enable-64-bit-bfd \
  --with-system-zlib --with-isl --with-cloog --disable-multilib
make tooldir=/usr -j$(nproc)
make -k check

sudo make tooldir=/usr install

echo "Build ZCASH"
cd ${HOME_DIR}/dev/zcash
./zcutil/fetch-params.sh
./zcutil/build.sh --disable-rust -j$(nproc)
./qa/zcash/full_test_suite.sh
./qa/pull-tester/rpc-tests.sh

mkdir -p ~/.zcash
chown 700 ~/.zcash
echo "addnode=mainnet.z.cash" >~/.zcash/zcash.conf
echo 'gen=1' >> ~/.zcash/zcash.conf
echo "genproclimit=-1" >> ~/.zcash/zcash.conf