install_mcljava_with_optimized_gmp.sh

#!/usr/bin/env sh
mcl_version="ae1c67a819a81fd645a544d5fb420b980b89816a"
# exit immediately on error
set -e

C_TUNING_FLAGS="-march=native -mtune=native"

arch="$(uname -m)"

if [ "$arch" = "arm64" ] || [ "$arch" = "aarch64" ]; then
  if command -v clang &>/dev/null; then
    # clang exists and we run on arm64 - clang might be chosen as compiler by CMake, and on this arch, it does not support -march=native
    # this flag works with both gcc and clang on aarch64, however, and should have the same effect - use it instead
    C_TUNING_FLAGS="-mcpu=native"
  fi
fi

GMP_VERSION=6.2.1
gmp_from_source(){
 echo "Cloning GNU gmp."
 curl https://gmplib.org/download/gmp/gmp-${GMP_VERSION}.tar.xz > gmp-${GMP_VERSION}.tar.xz || (echo "Error downloading GMP" && exit 1)
 unxz gmp-${GMP_VERSION}.tar.xz || (echo "Could not extract .xz archive - make sure you have unxz installed." && exit 1)
 tar -xvf gmp-${GMP_VERSION}.tar || (echo "Could not untar the gmp tree." && exit 1)
 rm gmp-${GMP_VERSION}.tar
 cd gmp-${GMP_VERSION}
 ./configure --enable-shared --enable-static --enable-cxx || (echo "Could not determine a GMP configuration" && exit 1)
 MAKE_PARALLEL=""
 if command -v nproc &>/dev/null; then
	 MAKE_PARALLEL="-j $(nproc)"
 else
	 echo "nproc was not found on your system - defaulting to default make behavior (usually single-threaded compile)."
 fi
 make ${MAKE_PARALLEL} || (echo "Could not make GMP" && exit 1)
 make check || (echo "Tests for GMP failed!" && exit 1)
 sudo make install || (echo "Could not install gmp to /usr/" && exit 1)
 cd ..
 rm -rf gmp-${GMP_VERSION}
}
# check for operating system
os=""
if [ "$(uname)" = "Darwin" ]; then
  os="mac"
elif [ "$(expr substr $(uname -s) 1 5)" = "Linux" ]; then
  os="linux"
elif [ "$(uname)" = "FreeBSD" ]; then
  os="FreeBSD"
else
  echo "Unsupported operating system. This script only works on Linux and macOS."
  exit 2
fi

# check that JAVA_INC is given
if [ $# -eq 0 ]; then
	echo "Missing Java include argument"
	echo "Please specify path of your JDK 'include' directory as first argument"
	if [ "$os" = "linux" ]; then
    echo "For example: $0 /usr/lib/jvm/java-8-openjdk-amd64/include"
  elif [ "$os" = "FreeBSD" ]; then
	echo "For example: $0  /usr/local/openjdk17/include/"
  else # mac os
    echo "For example: $0 /Library/Java/JavaVirtualMachines/openjdk-13.0.1.jdk/Contents/Home/include"
    echo "For your system, it's probably: "
    javahome=$(/usr/libexec/java_home)
    echo $0 $javahome/include
  fi
	exit 1
fi
if [ -z ${2+x} ]; then
	echo "Skipping from-source gmp install, assuming that GMP is already installed. To custom-build GMP for your system (with performance gains), call this script with 'gmp' as the second parameter."
else
	echo "Building gmp from source for optimal performance.";
	cd /tmp
	gmp_from_source
fi

java_inc=$1

(
  echo "----- Cloning mcl from https://github.com/herumi/mcl.git -----"
  cd /tmp
  git clone https://github.com/herumi/mcl.git
  cd mcl
  git checkout $mcl_version || exit
  echo "----- Deleting currently installed version of mcl -----"
  if [ $os = "linux" ] || [ $os = "FreeBSD" ]; then
    sudo rm /usr/lib/libmcljava.so
  else # mac os
    mkdir -p ~/Library/Java/Extensions/ #check that this is included here: System.out.println(System.getProperty("java.library.path"));
	  rm ~/Library/Java/Extensions/libmcljava.dylib
  fi
  echo "----- Building mcl -----"

  mkdir build 2>/dev/null
  cd build
  cmake .. -DCMAKE_C_FLAGS="${C_TUNING_FLAGS}" -DCMAKE_CXX_FLAGS="${C_TUNING_FLAGS}" -DMCL_STATIC_LIB="ON" || exit $?
  cmake --build . || exit $?
  cd ..
  export MCL_LIBDIR=$(pwd)/build/lib
  echo "----- Building mcl java bindings and running tests -----"
  echo "----- Java include path: $java_inc -----"
  cd ffi/java
  mkdir build 2>/dev/null
  cd build
  export JAVA_HOME=$1/../
  cmake .. -DMCL_LINK_DIR=${MCL_LIBDIR} -DCMAKE_CXX_FLAGS="${C_TUNING_FLAGS} -I /usr/local/include" -DGMP_LINK_DIR=/usr/local/lib || exit $?
  cmake --build . --target mcljava || exit $?
  echo "----- Copying mcl java shared library to /usr/lib/ -----"
  if [ $os = "linux" ] || [ $os = "FreeBSD" ]; then
    sudo cp libmcljava.so /usr/lib/
  else # mac os
    mkdir -p ~/Library/Java/Extensions/ #check that this is included here: System.out.println(System.getProperty("java.library.path"));
	  cp libmcljava.dylib ~/Library/Java/Extensions/
  fi
  echo "----- Installation finished successfully. Deleting mcl repository folder -----"
  rm -rf /tmp/mcl
  echo "----- Done -----"
) || { echo "----- Failed installation. -----"; rm -rf /tmp/mcl; exit 3; }