CGAL users discussion list

[Laurent Saboret <>]

Hi Machelilla,

TAUCS is an old library which is not supported by his author Sivan 
Toledo (see http://www.tau.ac.il/~stoledo/taucs) nor by CGAL team anymore.
Recent CGAL versions come with an another solver, Eigen, and we 
recommend you to use Eigen instead of TAUCS with CGAL.

If you absolutely need to compile TAUCS:

taucs_full.tgz on https://gforge.inria.fr/frs/?group_id=52 comes with 
Atlas, Lapack and Metis libraries precompiled with g77 compiler in 2009.
The first error below is about libg2c.so.0 which is part of g77.
libg2c.so is included in taucs_full.tgz (in external/lib/linux/) but I 
guess that is not compatible with your version of gcc.

I recommend you delete the precompiled libraries in external/lib/linux/ 
and use up to date versions.
The easiest is to install Atlas, Lapack and Metis libraries as packages.
If this is not possible, you may download Atlas, Lapack and Metis source 
code from 
https://gforge.inria.fr/frs/download.php/file/24629/taucs_external_src.tgz 
and recompile them by yourself.

Good luck,

Laurent Saboret
Transvalor/MINES Paristech


Le 03/06/2015 00:59, Machelilla a écrit :
> I have the same problem in ubuntu 12.04 32-bit system. I downloaded taucs
> from here https://gforge.inria.fr/frs/?group_id=52, and after make and
> install i get this:
>
> ~/Documentos/Librerias/taucs_full$ make
> mkdir obj
> mkdir: cannot create directory `obj': File exists
> make: [obj/linux/exists.log] Error 1 (ignored)
> mkdir obj/linux/
> echo exists > obj/linux/exists.log
> cc -c -O3 -Wall -std=c99   -DMACHTYPE_ -I src/ -I build/linux/ -I
> external/src/   \
>           progs/taucs_blas_underscore_test.c \
>           -o ./obj/linux/taucs_blas_underscore_test.o
> cc  \
>           -o ./obj/linux/taucs_blas_underscore_test \
>           obj/linux/taucs_blas_underscore_test.o -L external/lib/linux 
> -llapack -L
> external/lib/linux -lf77blas -lcblas -latlas -L external/lib/linux -lmetis
> -lg2c -lm
> obj/linux/taucs_blas_underscore_test build/linux/taucs_config_tests.h
> obj/linux/taucs_blas_underscore_test: error while loading shared libraries:
> libg2c.so.0: cannot open shared object file: No such file or directory
> make: [build/linux/taucs_config_tests.h] Error 127 (ignored)
> cc -c -O3 -Wall -std=c99   -DMACHTYPE_ -I src/ -I build/linux/ -I
> external/src/   \
>           progs/taucs_blas_nounderscore_test.c \
>           -o ./obj/linux/taucs_blas_nounderscore_test.o
> cc  \
>           -o ./obj/linux/taucs_blas_nounderscore_test \
>           obj/linux/taucs_blas_nounderscore_test.o -L external/lib/linux 
> -llapack
> -L external/lib/linux -lf77blas -lcblas -latlas -L external/lib/linux
> -lmetis -lg2c -lm
> obj/linux/taucs_blas_nounderscore_test.o:taucs_blas_nounderscore_test.c:function
> main: error: undefined reference to 'dgemm'
> collect2: ld returned 1 exit status
> make: [build/linux/taucs_config_tests.h] Error 1 (ignored)
> obj/linux/taucs_blas_nounderscore_test build/linux/taucs_config_tests.h
> make: obj/linux/taucs_blas_nounderscore_test: Command not found
> make: [build/linux/taucs_config_tests.h] Error 127 (ignored)
> cc -c -O3 -Wall -std=c99   -DMACHTYPE_ -I src/ -I build/linux/ -I
> external/src/   \
>           progs/taucs_blas_cblaswrap_test.c \
>           -o ./obj/linux/taucs_blas_cblaswrap_test.o
> cc  \
>           -o ./obj/linux/taucs_blas_cblaswrap_test \
>           obj/linux/taucs_blas_cblaswrap_test.o -L external/lib/linux 
> -llapack -L
> external/lib/linux -lf77blas -lcblas -latlas -L external/lib/linux -lmetis
> -lg2c -lm
> obj/linux/taucs_blas_cblaswrap_test.o:taucs_blas_cblaswrap_test.c:function
> main: error: undefined reference to 'f2c_dgemm'
> collect2: ld returned 1 exit status
> make: [build/linux/taucs_config_tests.h] Error 1 (ignored)
> obj/linux/taucs_blas_cblaswrap_test build/linux/taucs_config_tests.h
> make: obj/linux/taucs_blas_cblaswrap_test: Command not found
> make: [build/linux/taucs_config_tests.h] Error 127 (ignored)
> cc -c -O3 -Wall -std=c99   -DMACHTYPE_ -I src/ -I build/linux/ -I
> external/src/   \
>           progs/taucs_c99_complex_test.c \
>           -o ./obj/linux/taucs_c99_complex_test.o
> cc  \
>           -o ./obj/linux/taucs_c99_complex_test \
>           obj/linux/taucs_c99_complex_test.o -L external/lib/linux -llapack -L
> external/lib/linux -lf77blas -lcblas -latlas -L external/lib/linux -lmetis
> -lg2c -lm
> obj/linux/taucs_c99_complex_test build/linux/taucs_config_tests.h
>
>
> C99 complex numbers seem to be supported, 1+sqrt(-1)=-1.000000+1.000000i
>
>
> cc -c -O3 -Wall -std=c99   -DMACHTYPE_ -I src/ -I build/linux/ -I
> external/src/   \
>           progs/taucs_cilk_test.c \
>           -o ./obj/linux/taucs_cilk_test.o
> progs/taucs_cilk_test.c:8:19: fatal error: cilk.h: No such file or directory
> compilation terminated.
> make: [build/linux/taucs_config_tests.h] Error 1 (ignored)
> cc  \
>           -o ./obj/linux/taucs_cilk_test \
>           obj/linux/taucs_cilk_test.o -L external/lib/linux -llapack -L
> external/lib/linux -lf77blas -lcblas -latlas -L external/lib/linux -lmetis
> -lg2c -lm
> cc: error: obj/linux/taucs_cilk_test.o: No such file or directory
> make: [build/linux/taucs_config_tests.h] Error 1 (ignored)
> obj/linux/taucs_cilk_test build/linux/taucs_config_tests.h
> make: obj/linux/taucs_cilk_test: Command not found
> make: [build/linux/taucs_config_tests.h] Error 127 (ignored)
> mkdir bin
> mkdir: cannot create directory `bin': File exists
> make: [bin/linux/exists.log] Error 1 (ignored)
> mkdir bin/linux/
> echo exists > bin/linux/exists.log
> mkdir lib
> mkdir: cannot create directory `lib': File exists
> make: [lib/linux/exists.log] Error 1 (ignored)
> mkdir lib/linux/
> echo exists > lib/linux/exists.log
> cc -c -O3 -Wall -std=c99   -DMACHTYPE_ -I src/ -I build/linux/ -I
> external/src/   \
>         -DTAUCS_CORE_GENERAL \
>         src/taucs_sn_llt.c \
>         -o ./obj/linux/taucs_sn_llt.o
> In file included from src/taucs_sn_llt.c:13:0:
> src/taucs.h:83:2: error: #error "taucs_blas_*_test: linking with the BLAS
> failed all attempts"
> In file included from src/taucs_sn_llt.c:13:0:
> src/taucs.h:837:14: error: ‘taucs_blas_name’ declared as function returning
> a function
> src/taucs.h:837:1: warning: parameter names (without types) in function
> declaration [enabled by default]
> src/taucs.h:838:14: error: ‘taucs_blas_name’ declared as function returning
> a function
> src/taucs.h:838:1: warning: parameter names (without types) in function
> declaration [enabled by default]
> src/taucs.h:839:14: error: ‘taucs_blas_name’ declared as function returning
> a function
> src/taucs.h:839:1: warning: parameter names (without types) in function
> declaration [enabled by default]
> src/taucs.h:840:14: error: ‘taucs_blas_name’ declared as function returning
> a function
> src/taucs.h:840:1: warning: parameter names (without types) in function
> declaration [enabled by default]
> src/taucs_sn_llt.c:1339:1: warning: ‘tree_first_descendant’ defined but not
> used [-Wunused-function]
> make: *** [obj/linux/taucs_sn_llt.o] Error 1
>
> can you help me??
>
>
>
> --
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