diff -up src/sage/misc/cython.py.orig src/sage/misc/cython.py
--- src/sage/misc/cython.py.orig	2020-10-24 11:37:59.000000000 -0600
+++ src/sage/misc/cython.py	2020-10-30 16:08:06.039158996 -0600
@@ -46,7 +46,7 @@ standard_libs = [
 ] + cblas_libs + [
     'ntl']
 
-standard_libdirs = [os.path.join(SAGE_LOCAL, "lib")] + cblas_library_dirs
+standard_libdirs = [os.path.realpath(os.path.join(SAGE_LOCAL, "lib"))] + cblas_library_dirs
 
 
 ################################################################