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jowr / librefprop.so

Create a shared library from the Fortran sources provided by Refprop from NIST. This project provides an alternative to the refprop.dll that comes with the software. Please use the official instructions if possible

Home Page:https://github.com/usnistgov/REFPROP-cmake

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[Fortran libraries on mac OS X 10.8.5 and linked with Matlab 64 bits]

tonkiplis opened this issue · comments

commented

Fortran

So I managed quite easily to compile the fortran libraries on : Mac OS X 10.8.5.

The important features of my system are:

  • X-Code 5.1.1 with its command-line developer tool
  • gcc: Apple LLVM version 5.1 (clang-503.0.40) (based on LLVM 3.4 svn)
  • gfortran : 4.8.1

and I followed the installation instructions indicated on : https://github.com/jowr/librefprop.so
everything worked fine until I called make fortest (in order to test the installation), the logs I got are :

make fortest
%-----------------------------
gfortran -O3 -ffast-math -fPIC -g -o ./src/ex_mix.o -c ./src/ex_mix.for
gfortran -g -o ./bin/ex_mix_for ./src/ex_mix.o -lrefprop -lgfortran
Undefined symbols for architecture x86_64:
"start", referenced from:
-u command line option
ld: symbol(s) not found for architecture x86_64
collect2: error: ld returned 1 exit status
make: [bin/ex_mix_for] Error 1
%-----------------------------

To make it work, I had to change it to:

%-----------------------------
gfortran -O3 -ffast-math -fPIC -g -o ./src/ex_mix.o -c ./src/ex_mix.for
gfortran -g -o ./bin/ex_mix_for ./src/ex_mix.o -lrefprop -lgfortran -lcrt1.o
%-----------------------------
Note: This can be done directly in the Makefile in the line 336.

and then it compiled properly. I don't know exactly why, I found on the web it has to do with some static libraries which are not linked without this option, but I am not a specialist....
Afterward I could execute ./bin/ex_mix_for without any problem.

I hope this can help some users of Mac OS...

Matlab

Then, I wanted to get the Integration with Matlab
For sake of completeness I have a 64 bit installation (MATLAB_R2011a).
I performed the steps as indicated on: https://github.com/jowr/librefprop.so

  1. The first step of the manual work (as indicated during the make matlab) went w/o problem.
  2. Then the second step:

Open Matlab, and run: "cd /Users/thierrymeier/Documents/MATLAB/PhD/refProp9.1/librefprop.so-master/matlab;"
"run('thunk.m');"
proceed by pressing ENTER.

 _rm matlab/refpropm.m.org matlab/rp_proto64.m.org_

There I had a problem while running thunk.m, as I currently have two gcc compiler installed ( Apple LLVM version 5.1 and gcc4.8.1) but none of them correspond exactly to gcc-4.2. Thus I created a symlink:

sudo ln -s /usr/bin/gcc /usr/bin/gcc4.2

and it worked (I know its a little bit brute force but as a first shot...).

  1. I ran the sudo make matlab-install and the matlab function and the libraries were successfully copied in /opt/refprop as expected.
  2. running path(path, '/opt/refprop') permits to have a system wide use of the refprop functions.
  3. As I run test.m the refpropm function is called and Matlab crashes.... The log I get:

%-----------------------------
Process: MATLAB [2368]
Path: /Applications/MATLAB_R2011a.app/Contents/MacOS/StartMATLAB
Identifier: com.mathworks.matlab
Version: MATLAB Release 2011a (2.1)
Code Type: X86-64 (Native)
Parent Process: launchd [127]
User ID: 501

Date/Time: 2015-04-22 12:05:40.073 +0200
OS Version: Mac OS X 10.8.5 (12F2518)
Report Version: 10

Interval Since Last Report: 149802 sec
Crashes Since Last Report: 4
Per-App Interval Since Last Report: 14710 sec
Per-App Crashes Since Last Report: 3
Anonymous UUID: 0FA54308-2534-36FE-FC59-4636403F2392

Crashed Thread: 3

Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000002, 0x0000000000000000

_Dyld Error Message:
Symbol not found: _gfortran_transfer_character_write
Referenced from: /opt/refprop/librefprop.dylib
Expected in: /Applications/MATLAB_R2011a.app/sys/os/maci64/libgfortran.3.dylib
%-----------------------------

suggests a problem with the dylib library. To overcome it, I read the thread on w3.mathworks.com (here) where Nathan suggest to rename the DYLIB fil in the MATLAB application directory and create a symlink with the one located in /usr/local/lib:
ln -s /usr/local/lib/libgfortran.3.dylib /Applications/MATLAB_R2011a.app/sys/os/maci64/libgfortran.3.dylib

and then everything works. I hope this can help some users of Mac OS...
I am not sure whether it is the nicest solution to do it, but who cares?

Cheers,

Tonkiplis

commented

Hi, thank you very much for reporting this. Do you think you could integrate your experience into the readme.md and file a pull request?

commented

Hi, yes I'll try to do it tonight.

commented

Great, let me know if you have any trouble and I can try to help you.

commented

Hello Jorrit,
I was just wondering whether there is a procedure to implement the fortran library for the dielectric constant of water. In fact, this property is not directly available in the refpropm.m function.
Have a nice weekend,

commented

Hm, I could have a look. How do you get the values out in, let's say, FORTRAN? If you know how to do it, feel free to add it to your pull request. Nice weekend to you too!