Merge pull request #30 from yoshoku/fix_autoloader_search_dirs

Add some directories to autoloader search path

Author: masa16

lib/numo/linalg/autoloader.rb

@@ -19,13 +19,15 @@ def libs
       # @return [String] name of loaded backend library (mkl/openblas/lapack)
       def load_library
         mkl_dirs = ['/opt/intel/lib', '/opt/intel/lib64', '/opt/intel/mkl/lib', '/opt/intel/mkl/lib64']
-        openblas_dirs = ['/opt/openblas/lib', '/opt/openblas/lib64', '/usr/local/opt/openblas/lib']
+        openblas_dirs = ['/opt/OpenBLAS/lib', '/opt/OpenBLAS/lib64', '/opt/openblas/lib', '/opt/openblas/lib64',
+                         '/usr/local/opt/openblas/lib']
         atlas_dirs = ['/opt/atlas/lib', '/opt/atlas/lib64',
                       '/usr/lib/atlas', '/usr/lib64/atlas', '/usr/local/opt/atlas/lib']
         lapacke_dirs = ['/opt/lapack/lib', '/opt/lapack/lib64', '/opt/local/lib/lapack',
                         '/usr/local/opt/lapack/lib']
         opt_dirs =  ['/opt/local/lib', '/opt/local/lib64', '/opt/lib', '/opt/lib64']
-        base_dirs = ['/usr/local/lib', '/usr/local/lib64', '/usr/lib', '/usr/lib64']
+        base_dirs = ['/usr/local/lib', '/usr/local/lib64', '/usr/lib', '/usr/lib64',
+                     "/usr/lib/#{RbConfig::CONFIG['host_cpu']}-#{RbConfig::CONFIG['host_os']}"]
         base_dirs.unshift(*ENV['LD_LIBRARY_PATH'].split(':')) unless ENV['LD_LIBRARY_PATH'].nil?
 
         mkl_libs = find_mkl_libs([*base_dirs, *opt_dirs, *mkl_dirs])