Fix bugs when installing slycot.

Problems.md

@@ -21,3 +21,8 @@ export LD_LIBRARY_PATH=/opt/intel/lib/intel64:/opt/intel/mkl/lib/intel64:$LD_LIB
 
 export LD_PRELOAD=/opt/intel/mkl/lib/intel64/libmkl_def.so:/opt/intel/mkl/lib/intel64/libmkl_avx2.so:/opt/intel/mkl/lib/intel64/libmkl_core.so:/opt/intel/mkl/lib/intel64/libmkl_intel_lp64.so:/opt/intel/mkl/lib/intel64/libmkl_intel_thread.so:/opt/intel/lib/intel64_lin/libiomp5.so
 ```
+
+### Module `slycot` install error.
+
+A fortran compiler (e.g., `gfortran`) and BLAS/LAPACK (e.g. `liblapack-dev`) needs to be pre-installed. Try to include them in the library or remove these dependences. See [slycot's file](https://github.com/python-control/Slycot/blob/master/.travis.yml) for detail.
+

README.md

@@ -18,7 +18,7 @@ A Python package for graph kernels, graph edit distances and graph pre-image pro
 * tabulate>=0.8.2
 * tqdm>=4.26.0
 * control>=0.8.2 (for generalized random walk kernels only)
-* slycot>0.4.0 (for generalized random walk kernels only, which requires a fortran compiler, gfortran for example)
+* slycot>=0.3.3 (for generalized random walk kernels only, which requires a fortran compiler (e.g., `gfortran`) and BLAS/LAPACK (e.g. `liblapack-dev`))
 
 ## How to use?
 

requirements.txt

@@ -6,7 +6,7 @@ scikit-learn>=0.20.0
 tabulate>=0.8.2
 tqdm>=4.26.0
 control>=0.8.2 # for generalized random walk kernels only.
-slycot>=0.3.3 # for generalized random walk kernels only, which requires a fortran compiler, gfortran for example
+slycot>=0.3.3 # for generalized random walk kernels only, which requires a fortran compiler (e.g., `gfortran`) and BLAS/LAPACK (e.g. `liblapack-dev`)
 cvxpy>=1.0.31 # for preimage. Does not work for "pip install graphkit-learn".
 # -e https://files.pythonhosted.org/packages/11/d0/d900870dc2d02ea74961b90c353666c6528a33ea61a10aa59a0d5574ae59/cvxpy-1.0.31.tar.gz # for preimage.
 cvxopt>=1.2.5 # for preimage.

requirements_pypi.txt

@@ -6,7 +6,7 @@ scikit-learn>=0.20.0
 tabulate>=0.8.2
 tqdm>=4.26.0
 control>=0.8.2 # for generalized random walk kernels only.
-# slycot>=0.4.0 # for generalized random walk kernels only, which requires a fortran compiler, gfortran for example
+# slycot>=0.3.3 # for generalized random walk kernels only, which requires a fortran compiler (e.g., `gfortran`) and BLAS/LAPACK (e.g. `liblapack-dev`)
 # cvxpy>=1.0.31 # for preimage. Does not work for "pip install graphkit-learn".
 # -e https://files.pythonhosted.org/packages/11/d0/d900870dc2d02ea74961b90c353666c6528a33ea61a10aa59a0d5574ae59/cvxpy-1.0.31.tar.gz # for preimage.
 cvxopt>=1.2.5 # for preimage.