########## Windows using vcpkg ###################
1. Clone VCPKG
git clone https://github.com/microsoft/vcpkg.git
2. Install VCPKG from within vcpkg folder:
.\boostrap-vcpkg.bat
3. Install GRPC
.\vcpkg install grpc --triplet x64-windows

4. Python
* Install Python 3
* Execute the following using Python3
  python -m pip install grpcio-tools
* Make sure the python executable is found by setting -DPYTHON_EXECUTABLE=LOCATION_OF_PYTHON.EXE
   
4. Run cmake with the following statements
-DRESINSIGHT_ENABLE_GRPC=true
-DPYTHON_EXECUTABLE=LOCATION_OF_PYTHON.EXE
-DCMAKE_TOOLCHAIN_FILE=LOCATION_OF_VCPKG/scripts/buildsystems/vcpkg.cmake
-A x64

############ Linux as STANDALONE GPRC ###############

#########################################################################################################
# 1. install autotools, autoconf and libtool with your distributions package manager.
#
# On Centos 6 you will need a newer Python and newer version of GCC than the standard version
# ResInsight AND gRPC will build with devtoolset-3+ but apparently devtoolset-3 is now gone
# So you will need to install devtoolset-6, devtoolset-7 or devtoolset-8.
# It makes sense to install devtoolset-6* (with asterix) to get all the necessary devtoolset packages
# You will also need a version of Python 3.5
#    
##########################################################################################################

###################################################################
# 2. Enable compiler and Python on Centos 6 (on other distributions, this may be different)   
###################################################################
sudo yum install devtoolset-6* rh-python35 autotools autoconf libtool yum
scl enable devtoolset-6 rh-python35 bash

################################################################################################################
# 3. Run grpc install script and install to a user-writable directory. I.e, from within the ResInsight folder:
# Most of this runs fine without root. But unfortunately grpc currently fails to install the C++ library without root.
# So the script is required to be run as root even if the provided folders are writeable by the user
# WARNING: As of grpc 1.21.1 a long install directory (/opt/grpc in the example below) may get you into trouble
# with this bug: https://github.com/grpc/grpc/issues/14844
# A patch is available in the issue, but the easiest thing to do is to ensure a short install path
################################################################################################################

sudo ./build-grpc-centos.sh /tmp/grpc /opt/grpc

##############################################################################
# 4. Install grpcio-tools for Python (this may have to be done as root user):
##############################################################################
sudo pip install grpcio-tools

#################################################################################
# 5. Run cmake making sure GRPC_INSTALL_PREFIX is set to the Grpc install folder, PYTHON_EXECUTABLE set to a good python 3 and RESINSIGHT_ENABLE_GRPC = true