Cannot loading libgeocalc

[daishuyu]

Dear Rainer Manuel Schaich,

I'm trying to use your code to solve a vertex enumeration problem, i.e. given H-representation, find its V-representation. I follow the tutorial on the website and stuck when editing startup. I created a startup m-file in the file where I install the GeoCalcLib.
When I run
[,] = loadlibrary('libgeocalc','PATH/mainFunctions.h');
display('GeoCalc library loaded.');
the error "image not found" occurs. It seems that no library is found. I checked the src file which is the path points to. There is no file called libgeocalc.
Can you please tell me how to solve this?

Best,
Tianyu

[worc4021]

Hi,

I've forgotten to fix the webpage describing the process. There is a new way of compiling the code. Simply create a text file called User.make in your local repository and set the variable MATLABROOT (e.g. MATLABROOT=/opt/matlab/R2019b/) and INSTALLDIR (e.g. INSTALLDIR=$HOME/Matlab/Tools)

Then run make and that should already sort you out. I will try to update the webpage as it is outdated and misleading, I made it in 2016 and need to revive all the bits I need to update its content, I forgot to do this last year when someone else ran in to the same issue you're having now. My apologies!

Cheers,
Manuel

[daishuyu]

It works. Thanks.

[jacob-roth]

Hi, I'm on macos and am encountering the following error:

(base) myuser@laptop:GeoCalcLib (master)$ make
make -C src -f MakeMex
/Applications/MATLAB_R2020b.app/bin/mex vertexEnumeration.o mainFunctions.o translation_functions.o lrslib.o lrsgmp.o -lgmp
Building with 'Xcode with Clang'.
Undefined symbols for architecture x86_64:
  "___gmpq_add", referenced from:
      _mpq_normalised_row in translation_functions.o
  "___gmpq_canonicalize", referenced from:
      _mpz_to_mpq_vec in translation_functions.o
      _GMPmat_lift in translation_functions.o
      _GMPmat_unlift in translation_functions.o
      _mpq_normalised_row in translation_functions.o
      _mpz_to_mpq in translation_functions.o
      _reduce in lrsgmp.o
      _linrat in lrsgmp.o
      ...
  "___gmpq_clear", referenced from:
      _MXArray_fromGMPlist in translation_functions.o
      _GMPlist_toDouble in translation_functions.o
      _GMPlist_pull in translation_functions.o
      _GMPlist_toGMPmat in translation_functions.o
      _H2V in translation_functions.o
      _mpz_to_mpq_vec in translation_functions.o
      _GMPmat_destroy in translation_functions.o
      ...
  "___gmpq_div", referenced from:
      _mpq_normalised_row in translation_functions.o
  "___gmpq_equal", referenced from:
      _GMPmat_unlift in translation_functions.o
  "___gmpq_get_d", referenced from:
      _MXArray_fromGMPmat in translation_functions.o
      _MXArray_fromGMPlist in translation_functions.o
      _GMPlist_toDouble in translation_functions.o
      _directCallWrapper in translation_functions.o
  "___gmpq_get_den", referenced from:
      _reduce in lrsgmp.o
      _linrat in lrsgmp.o
      _divrat in lrsgmp.o
      _mulrat in lrsgmp.o
      _prat in lrsgmp.o
  "___gmpq_get_num", referenced from:
      _reduce in lrsgmp.o
      _linrat in lrsgmp.o
      _divrat in lrsgmp.o
      _mulrat in lrsgmp.o
      _prat in lrsgmp.o
  "___gmpq_init", referenced from:
      _GMPmat_fromMXArray in translation_functions.o
      _GMPlist_pull in translation_functions.o
      _GMPlist_toGMPmat in translation_functions.o
      _mpz_to_mpq_vec in translation_functions.o
      _GMPmat_create in translation_functions.o
      _reducemat in translation_functions.o
      _mpq_row_extract in translation_functions.o
      ...
  "___gmpq_mul", referenced from:
      _mpq_normalised_row in translation_functions.o
  "___gmpq_set", referenced from:
      _GMPlist_pull in translation_functions.o
      _GMPlist_toGMPmat in translation_functions.o
      _mpz_to_mpq_vec in translation_functions.o
      _reducemat in translation_functions.o
      _mpq_row_extract in translation_functions.o
      _reducevertices in translation_functions.o
      _GMPmat_getValue in translation_functions.o
      ...
  "___gmpq_set_d", referenced from:
      _GMPmat_fromMXArray in translation_functions.o
      _GMPmat_setValue in translation_functions.o
  "___gmpq_set_den", referenced from:
      _mpz_to_mpq_vec in translation_functions.o
      _mpz_to_mpq in translation_functions.o
      _reduce in lrsgmp.o
      _linrat in lrsgmp.o
      _divrat in lrsgmp.o
      _mulrat in lrsgmp.o
      _prat in lrsgmp.o
      ...
  "___gmpq_set_num", referenced from:
      _mpz_to_mpq_vec in translation_functions.o
      _mpz_to_mpq in translation_functions.o
      _reduce in lrsgmp.o
      _linrat in lrsgmp.o
      _divrat in lrsgmp.o
      _mulrat in lrsgmp.o
      _prat in lrsgmp.o
      ...
  "___gmpq_set_ui", referenced from:
      _mpq_normalised_row in translation_functions.o
  "___gmpz_add", referenced from:
      _linint in lrsgmp.o
      _atomp in lrsgmp.o
  "___gmpz_addmul", referenced from:
      _mpz_to_mpq_vec in translation_functions.o
      _mpz_norm in translation_functions.o
      _mpz_to_mpq in translation_functions.o
  "___gmpz_clear", referenced from:
      _mpz_to_mpq_vec in translation_functions.o
      _V2H in translation_functions.o
      _mpz_row_clean in translation_functions.o
      _mpz_norm in translation_functions.o
      _mpz_to_mpq in translation_functions.o
      _lrs_read_dic in lrslib.o
      _lrs_getfirstbasis in lrslib.o
      ...
  "___gmpz_cmp", referenced from:
      _lrs_read_dic in lrslib.o
      _dan_selectpivot in lrslib.o
      _checkredund in lrslib.o
      _lrs_set_row_mp in lrslib.o
      _phaseone in lrslib.o
      _comprod in lrsgmp.o
  "___gmpz_cmp_ui", referenced from:
      _lrs_read_dic in lrslib.o
      _lrs_getvertex in lrslib.o
      _lrs_estimate in lrslib.o
      _lrs_set_row_mp in lrslib.o
      _prat in lrsgmp.o
  "___gmpz_divexact", referenced from:
      _lrs_read_dic in lrslib.o
      _pivot in lrslib.o
      _lrs_set_row_mp in lrslib.o
      _lcm in lrsgmp.o
      _reduceint in lrsgmp.o
      _reducearray in lrsgmp.o
  "___gmpz_fac_ui", referenced from:
      _rescalevolume in lrslib.o
  "___gmpz_gcd", referenced from:
      _lrs_read_dic in lrslib.o
      _lrs_set_row_mp in lrslib.o
      _lcm in lrsgmp.o
      _reducearray in lrsgmp.o
  "___gmpz_get_d", referenced from:
      _rattodouble in lrsgmp.o
  "___gmpz_init", referenced from:
      _mpz_to_mpq_vec in translation_functions.o
      _mpz_row_init in translation_functions.o
      _mpz_norm in translation_functions.o
      _mpz_to_mpq in translation_functions.o
      _lrs_alloc_dat in lrslib.o
      _lrs_read_dic in lrslib.o
      _lrs_getfirstbasis in lrslib.o
      ...
  "___gmpz_init_set_ui", referenced from:
      _V2H in translation_functions.o
      _mpz_row_init_one in translation_functions.o
  "___gmpz_mul", referenced from:
      _lrs_read_dic in lrslib.o
      _lrs_getfirstbasis in lrslib.o
      _pivot in lrslib.o
      _rescaledet in lrslib.o
      _rescalevolume in lrslib.o
      _checkredund in lrslib.o
      _lrs_set_row_mp in lrslib.o
      ...
  "___gmpz_mul_ui", referenced from:
      _linint in lrsgmp.o
      _atomp in lrsgmp.o
  "___gmpz_out_str", referenced from:
      _pmp in lrsgmp.o
      _prat in lrsgmp.o
  "___gmpz_set", referenced from:
      _H2V in translation_functions.o
      _GMPmat_getRow in translation_functions.o
      _V2H in translation_functions.o
      _reducemat in translation_functions.o
      _reducevertices in translation_functions.o
      _mpz_to_mpq in translation_functions.o
      _directCallWrapper in translation_functions.o
      ...
  "___gmpz_set_si", referenced from:
      _V2H in translation_functions.o
      _lrs_alloc_dat in lrslib.o
      _lrs_alloc_dic in lrslib.o
      _lrs_read_dic in lrslib.o
      _lrs_getfirstbasis in lrslib.o
      _checkindex in lrslib.o
      _lrs_getvertex in lrslib.o
      ...
  "___gmpz_sqrt", referenced from:
      _mpz_to_mpq_vec in translation_functions.o
      _mpz_norm in translation_functions.o
      _mpz_to_mpq in translation_functions.o
  "___gmpz_sub", referenced from:
      _pivot in lrslib.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

make[1]: *** [vertexEnumeration.mexmaci64] Error 255
make: *** [all] Error 2

Do you have any advice? I made sure to run

(base) myuser@laptop:GeoCalcLib (master)$ find /usr /opt -name "gmp.h"
find: /usr/sbin/authserver: Permission denied
/usr/local/include/gmp.h
/usr/local/Cellar/gmp/6.2.0/include/gmp.h

and then set my User.make file as

# Specify the absolute path to your Matlab installation
MATLABROOT = /Applications/MATLAB_R2020b.app

# Path to which everything should be installed, has to be on Matlab path!
INSTALLDIR = /Users/myuser/Documents/MATLAB

# Path to gmp.h
# GMPINCLUDE = /usr/local/Cellar/gmp/6.2.0/include
GMPINCLUDE = /usr/local/include/

Any advice would be appreciated!

[worc4021]

Hello

I can confirm that I am seeing the exact same problem on my mac with 2020b Matlab and the current brew version of gmp on catalina. I'm not super clear why this is.

However, for the first round of shutdown I was bored and played around with the cpp mex interface of Matlab which is way easier to maintain and work with. I have a repo where I have an interface to the facet enumeration and vertex enumeration. It does still build and work just fine on Matlab 2020b and catalina. I can untangle it from my other tools if those two are the ones you're looking for.

Cheers,
Manuel