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Warnings and errors when installing the SuperSCS module in Python
This is an issue I'm experiencing in SuperSCS, but I thought you could help since you've written the Python interface for SCS.
When installing the superscs module using sudo python setup.py install I get a lot of warnings as shown here.
Although on Linux and OSX I only get warnings, on Windows the compilation fails.
Let me paste part of the logs here:
./src\scs.c(2241) : error C2065: 'blasint' : undeclared identifier
../src\scs.c(2241) : error C2146: syntax error : missing ';' before identifier 'nMax'
../src\scs.c(2241) : error C2065: 'nMax' : undeclared identifier
../src\scs.c(2242) : error C2143: syntax error : missing ';' before 'type'
../src\scs.c(2243) : error C2275: 'scs_int' : illegal use of this type as an expression
c:\projects\scs\include\glbopts.h(85) : see declaration of 'scs_int'
../src\scs.c(2243) : error C2146: syntax error : missing ';' before identifier 'i'
../src\scs.c(2243) : error C2065: 'i' : undeclared identifier
../src\scs.c(2244) : error C2275: 'scs_int' : illegal use of this type as an expression
c:\projects\scs\include\glbopts.h(85) : see declaration of 'scs_int'
../src\scs.c(2244) : error C2146: syntax error : missing ';' before identifier 'float_size'
../src\scs.c(2244) : error C2065: 'float_size' : undeclared identifier
../src\scs.c(2245) : error C2275: 'scs_int' : illegal use of this type as an expression
c:\projects\scs\include\glbopts.h(85) : see declaration of 'scs_int'
../src\scs.c(2245) : error C2146: syntax error : missing ';' before identifier 'int_size'
../src\scs.c(2245) : error C2065: 'int_size' : undeclared identifier
../src\scs.c(2246) : error C2275: 'scs_int' : illegal use of this type as an expression
c:\projects\scs\include\glbopts.h(85) : see declaration of 'scs_int'
../src\scs.c(2246) : error C2146: syntax error : missing ';' before identifier 'l'
../src\scs.c(2246) : error C2065: 'l' : undeclared identifier
../src\scs.c(2246) : warning C4244: '=' : conversion from 'const scs_int' to 'int', possible loss of data
../src\scs.c(2247) : error C2275: 'scs_int' : illegal use of this type as an expression
c:\projects\scs\include\glbopts.h(85) : see declaration of 'scs_int'
../src\scs.c(2247) : error C2146: syntax error : missing ';' before identifier 'mem'
../src\scs.c(2247) : error C2065: 'mem' : undeclared identifier
../src\scs.c(2247) : warning C4244: '=' : conversion from 'scs_int' to 'int', possible loss of data
../src\scs.c(2249) : error C2065: 'i' : undeclared identifier
../src\scs.c(2249) : error C2065: 'i' : undeclared identifier
../src\scs.c(2249) : error C2065: 'i' : undeclared identifier
../src\scs.c(2250) : error C2065: 'i' : undeclared identifier
../src\scs.c(2250) : error C2065: 'nMax' : undeclared identifier
../src\scs.c(2251) : error C2065: 'nMax' : undeclared identifier
../src\scs.c(2251) : error C2065: 'blasint' : undeclared identifier
../src\scs.c(2251) : error C2146: syntax error : missing ';' before identifier 'k'
../src\scs.c(2251) : error C2065: 'i' : undeclared identifier
../src\scs.c(2255) : error C2065: 'allocated_memory' : undeclared identifier
../src\scs.c(2256) : error C2065: 'float_size' : undeclared identifier
../src\scs.c(2262) : error C2065: 'nMax' : undeclared identifier
../src\scs.c(2263) : error C2065: 'nMax' : undeclared identifier
../src\scs.c(2264) : error C2065: 'nMax' : undeclared identifier
../src\scs.c(2264) : error C2039: 'lwork' : is not a member of 'scs_cone_work'
c:\projects\scs\include\cones.h(131) : see declaration of 'scs_cone_work'
../src\scs.c(2265) : error C2065: 'l' : undeclared identifier
../src\scs.c(2266) : error C2065: 'int_size' : undeclared identifier
../src\scs.c(2268) : error C2039: 'liwork' : is not a member of 'scs_cone_work'
c:\projects\scs\include\cones.h(131) : see declaration of 'scs_cone_work'
../src\scs.c(2272) : error C2065: 'allocated_memory' : undeclared identifier
../src\scs.c(2272) : error C2065: 'float_size' : undeclared identifier
../src\scs.c(2272) : error C2065: 'l' : undeclared identifier
../src\scs.c(2274) : error C2065: 'mem' : undeclared identifier
../src\scs.c(2275) : error C2065: 'allocated_memory' : undeclared identifier
../src\scs.c(2275) : error C2065: 'float_size' : undeclared identifier
../src\scs.c(2275) : error C2065: 'l' : undeclared identifier
../src\scs.c(2275) : error C2065: 'mem' : undeclared identifier
../src\scs.c(2278) : error C2065: 'allocated_memory' : undeclared identifier
../src\scs.c(2278) : error C2065: 'float_size' : undeclared identifier
../src\scs.c(2278) : error C2065: 'l' : undeclared identifier
../src\scs.c(2278) : error C2065: 'mem' : undeclared identifier
../src\scs.c(2279) : error C2065: 'l' : undeclared identifier
../src\scs.c(2279) : error C2065: 'mem' : undeclared identifier
../src\scs.c(2279) : error C2065: 'l' : undeclared identifier
../src\scs.c(2279) : error C2065: 'mem' : undeclared identifier
../src\scs.c(2279) : warning C4244: '+=' : conversion from 'scs_int' to 'int', possible loss of data
../src\scs.c(2283) : error C2065: 'allocated_memory' : undeclared identifier
../src\scs.c(2283) : error C2065: 'float_size' : undeclared identifier
../src\scs.c(2283) : warning C4244: '+=' : conversion from 'const scs_int' to 'int', possible loss of data
../src\scs.c(2285) : error C2065: 'allocated_memory' : undeclared identifier
It would be useful if you updated appveyor to run the Python tests so as to reproduce the errors. https://ci.appveyor.com/project/alphaville/scs/build/job/ysjxxdx4ukjabqo3#L244
Update: I resolved all issues in scs.c and linAlg.c, but I now get some errors in scs_parser.c (check out this link for details). I'll try to fix them.
I had to add a few macros in setup.py; in particular:
define_macros = [('PYTHON', None), ('CTRLC', 1), ('COPYAMATRIX', None), ('USE_LAPACK', 1), ('LAPACK_LIB_FOUND', 1),('DSVD_ACTIVATED', 1)]
Feel free to close this issue if you like. Let me know if you have experienced similar issues on Windows.
Looks like you got it to work? By the way, the SCS python CI is with the interface which I broke out to a separate repo, it's here now: https://github.com/bodono/scs-python
Hi Brendan,
Thanks for your reply.
I resolved all these issue and at least on Linux and OSX everything works fine.
However, on Windows I get the following errors when running python setup.py install:
cones.obj : error LNK2019: unresolved external symbol dsyevr_ referenced in function setUpSdScsConeWorkSpace
cones.obj : error LNK2019: unresolved external symbol dsyr_ referenced in function projSemiDefiniteCone
cones.obj : error LNK2019: unresolved external symbol dnrm2_ referenced in function projSemiDefiniteCone
linAlg.obj : error LNK2001: unresolved external symbol dnrm2_
cones.obj : error LNK2019: unresolved external symbol dscal_ referenced in function projSemiDefiniteCone
linAlg.obj : error LNK2001: unresolved external symbol dscal_
linAlg.obj : error LNK2019: unresolved external symbol dgemm_ referenced in function scs_matrix_multiply
linAlg.obj : error LNK2019: unresolved external symbol ddot_ referenced in function scs_inner_product
linAlg.obj : error LNK2019: unresolved external symbol idamax_ referenced in function scs_norm_infinity
linAlg.obj : error LNK2019: unresolved external symbol daxpy_ referenced in function scs_add_scaled_array
linAlg.obj : error LNK2019: unresolved external symbol dgels_ referenced in function scs_qr_workspace_size
linAlg.obj : error LNK2019: unresolved external symbol dgelss_ referenced in function scs_svd_workspace_size
scs.obj : error LNK2019: unresolved external symbol isnan referenced in function scs_isnan
scs.obj : error LNK2019: unresolved external symbol round referenced in function scs_print_footer
build\lib.win-amd64-2.7\_superscs_direct.pyd : fatal error LNK1120: 12 unresolved externals
C:\Python27-x64\lib\site-packages\numpy\distutils\system_info.py:624: UserWarning:
Atlas (http://math-atlas.sourceforge.net/) libraries not found.
Directories to search for the libraries can be specified in the
numpy/distutils/site.cfg file (section [atlas]) or by setting
the ATLAS environment variable.
self.calc_info()
C:\Python27-x64\lib\site-packages\numpy\distutils\system_info.py:624: UserWarning:
Blas (http://www.netlib.org/blas/) libraries not found.
Directories to search for the libraries can be specified in the
numpy/distutils/site.cfg file (section [blas]) or by setting
the BLAS environment variable.
self.calc_info()
C:\Python27-x64\lib\site-packages\numpy\distutils\system_info.py:624: UserWarning:
Blas (http://www.netlib.org/blas/) sources not found.
Directories to search for the sources can be specified in the
numpy/distutils/site.cfg file (section [blas_src]) or by setting
the BLAS_SRC environment variable.
self.calc_info()
C:\Python27-x64\lib\site-packages\numpy\distutils\system_info.py:624: UserWarning:
Lapack (http://www.netlib.org/lapack/) libraries not found.
Directories to search for the libraries can be specified in the
numpy/distutils/site.cfg file (section [lapack]) or by setting
the LAPACK environment variable.
self.calc_info()
C:\Python27-x64\lib\site-packages\numpy\distutils\system_info.py:624: UserWarning:
Lapack (http://www.netlib.org/lapack/) sources not found.
Directories to search for the sources can be specified in the
numpy/distutils/site.cfg file (section [lapack_src]) or by setting
the LAPACK_SRC environment variable.
Do you compile with blas and lapack in your tests on appveyor? Any idea how I could do it? Certain functionality in SuperSCS relies on lapack's SVD implementation.
Yes, by default it links against the numpy blas / lapack. I have generally found conda to be the easiest way to get it all running. You should just be able to copy the scs and scs-python appveyor scripts. My guess from that error is that the blas install you're using has a different prefix or suffix, so instead of dscal_ it could be dscal or dscal_64_ etc.