migration of freesteam a free implementation of IAPWS-IF97 thermalphysical propeties for water and steam from sourceforge to github, to make it compatible with modern Linux system.

Original repo at sourceforge: http://freesteam.sourceforge.net/

Credit goes to the original authors: John Pye, etc

License: GPL as original release

on the latest sourceforge version 2.1 (released in 2013)

Readme of sourceforge

• qt4 and gtk2.0 are general not available on modern system
• scons build system provided by the authors
• python wrapping using swig >=2.0
• cross-platform building and packaging: macosx PackageMaker and windows msvc and NSIS, linux RPM

water steam properties used by OpenFOAm wiki: https://github.com/romansCode/IAPWS-IF97-OF

This repository is also outdated, will not compiled on modern C++11 compiler and latest OpenFOAM versions.

Code_Saturne using another open source software. EOS ??

• move all source into src folder, this will break scons build system
• cmake building system setup
• deb package generation by cmake

Tested on Ubuntu 18.04 64bit

• gtk2.0 will not upgrade to gtk4.0, no such expertise
• qt4 to qt5 or qt6, wait until there is such a requirement
• RPM spec
• cross-platform packaging, invite contribution, describing how GSL installation

cmake is now supported to compile the C shared library and build swig python module.

cd freesteam
mkdir build
cd build
cmake ..
#install 

version definition: version jumps from 2.1 to 3.0 to indicating building system change

#define FREESTEAM_VERSION "@VERSION@"

config.h.in it is compatible with cmake configure_file command

steam_uv.c seems has not yet completed, is excluded from compiling

ascend is not yet compiled, what is that?

freestream.spec.in

cmake should be enable to use this template, todo!

freestream-config.in

this configuration is generated by python script

cmake setup added