diff -up src/sage/misc/cython.py.orig src/sage/misc/cython.py
--- src/sage/misc/cython.py.orig	2021-08-26 13:10:09.114735665 -0600
+++ src/sage/misc/cython.py	2021-08-26 13:11:01.734797359 -0600
@@ -55,7 +55,7 @@ def _standard_libs_libdirs_incdirs_alias
         'ntl']
     standard_libdirs = []
     if SAGE_LOCAL:
-        standard_libdirs.append(os.path.join(SAGE_LOCAL, "lib"))
+        standard_libdirs.append(os.path.realpath(os.path.join(SAGE_LOCAL, "lib")))
     standard_libdirs.extend(aliases["CBLAS_LIBDIR"] + aliases["NTL_LIBDIR"])
     standard_incdirs = sage_include_directories() + aliases["CBLAS_INCDIR"] + aliases["NTL_INCDIR"]
     return standard_libs, standard_libdirs, standard_incdirs, aliases