diff -up configure.orig configure
--- configure.orig	2022-09-19 16:39:46.000000000 -0600
+++ configure	2023-01-15 19:47:16.551480424 -0700
@@ -17604,12 +17604,12 @@ if test -n "$OPENBLAS_CFLAGS"; then
     pkg_cv_OPENBLAS_CFLAGS="$OPENBLAS_CFLAGS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"openblas >= 0.2.20\""; } >&5
-  ($PKG_CONFIG --exists --print-errors "openblas >= 0.2.20") 2>&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"flexiblas >= 3.0.0\""; } >&5
+  ($PKG_CONFIG --exists --print-errors "flexiblas >= 3.0.0") 2>&5
   ac_status=$?
   printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
-  pkg_cv_OPENBLAS_CFLAGS=`$PKG_CONFIG --cflags "openblas >= 0.2.20" 2>/dev/null`
+  pkg_cv_OPENBLAS_CFLAGS=`$PKG_CONFIG --cflags "flexiblas >= 3.0.0" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
 else
   pkg_failed=yes
@@ -17621,12 +17621,12 @@ if test -n "$OPENBLAS_LIBS"; then
     pkg_cv_OPENBLAS_LIBS="$OPENBLAS_LIBS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"openblas >= 0.2.20\""; } >&5
-  ($PKG_CONFIG --exists --print-errors "openblas >= 0.2.20") 2>&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"flexiblas >= 3.0.0\""; } >&5
+  ($PKG_CONFIG --exists --print-errors "flexiblas >= 3.0.0") 2>&5
   ac_status=$?
   printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
-  pkg_cv_OPENBLAS_LIBS=`$PKG_CONFIG --libs "openblas >= 0.2.20" 2>/dev/null`
+  pkg_cv_OPENBLAS_LIBS=`$PKG_CONFIG --libs "flexiblas >= 3.0.0" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
 else
   pkg_failed=yes
@@ -17647,9 +17647,9 @@ else
         _pkg_short_errors_supported=no
 fi
         if test $_pkg_short_errors_supported = yes; then
-	        OPENBLAS_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "openblas >= 0.2.20" 2>&1`
+	        OPENBLAS_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "flexiblas >= 3.0.0" 2>&1`
         else
-	        OPENBLAS_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "openblas >= 0.2.20" 2>&1`
+	        OPENBLAS_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "flexiblas >= 3.0.0" 2>&1`
         fi
 	# Put the nasty error message in config.log where it belongs
 	echo "$OPENBLAS_PKG_ERRORS" >&5
@@ -17673,17 +17673,17 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_
 /* end confdefs.h.  */
 
 namespace conftest {
-  extern "C" int openblas_get_config ();
+  extern "C" int flexiblas_get_version ();
 }
 int
 main (void)
 {
-return conftest::openblas_get_config ();
+return conftest::flexiblas_get_version ();
   ;
   return 0;
 }
 _ACEOF
-for ac_lib in '' openblas cblas blas
+for ac_lib in '' flexiblas cblas blas
 do
   if test -z "$ac_lib"; then
     ac_res="none required"
@@ -17740,22 +17740,20 @@ else $as_nop
 /* end confdefs.h.  */
 
                            #include <stdio.h>
-                                             char *openblas_get_config(void);
+                                             void flexiblas_get_version(void);
                                              int version[3];
 int
 main (void)
 {
 version[0] = version[1] = version[2] = 0;
                                              /*printf("%s", openblas_get_config());*/
-                                             if (sscanf(openblas_get_config(), "OpenBLAS %d.%d.%d",
-                                                        version, version+1, version+2) < 1)
-                                               return 1;
+                                             flexiblas_get_version(&version[0], &version[1], &version[2]);
                                              if (  10000 * version[0]
                                                    + 100 * version[1]
                                                          + version[2]
-                                                 < 10000 * 0
-                                                   + 100 * 2
-                                                         + 20)
+                                                 < 10000 * 3
+                                                   + 100 * 0
+                                                         + 0)
                                                return 1;
   ;
   return 0;
@@ -17806,7 +17804,7 @@ return conftest::cblas_dgemm ();
   return 0;
 }
 _ACEOF
-for ac_lib in '' openblas cblas blas
+for ac_lib in '' flexiblas cblas blas
 do
   if test -z "$ac_lib"; then
     ac_res="none required"
@@ -17873,7 +17871,7 @@ return conftest::dgeqrf ();
   return 0;
 }
 _ACEOF
-for ac_lib in '' openblas lapack
+for ac_lib in '' flexiblas lapack
 do
   if test -z "$ac_lib"; then
     ac_res="none required"
@@ -17940,7 +17938,7 @@ return conftest::dgeqrf_ ();
   return 0;
 }
 _ACEOF
-for ac_lib in '' openblas lapack
+for ac_lib in '' flexiblas lapack
 do
   if test -z "$ac_lib"; then
     ac_res="none required"
@@ -18007,7 +18005,7 @@ return conftest::DGEQRF ();
   return 0;
 }
 _ACEOF
-for ac_lib in '' openblas lapack
+for ac_lib in '' flexiblas lapack
 do
   if test -z "$ac_lib"; then
     ac_res="none required"
@@ -18074,7 +18072,7 @@ return conftest::DGEQRF_ ();
   return 0;
 }
 _ACEOF
-for ac_lib in '' openblas lapack
+for ac_lib in '' flexiblas lapack
 do
   if test -z "$ac_lib"; then
     ac_res="none required"
@@ -18165,17 +18163,17 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_
 /* end confdefs.h.  */
 
 namespace conftest {
-  extern "C" int openblas_get_config ();
+  extern "C" int flexiblas_get_version ();
 }
 int
 main (void)
 {
-return conftest::openblas_get_config ();
+return conftest::flexiblas_get_version ();
   ;
   return 0;
 }
 _ACEOF
-for ac_lib in '' openblas cblas blas
+for ac_lib in '' flexiblas cblas blas
 do
   if test -z "$ac_lib"; then
     ac_res="none required"
@@ -18232,22 +18230,20 @@ else $as_nop
 /* end confdefs.h.  */
 
                            #include <stdio.h>
-                                             char *openblas_get_config(void);
+                                             void flexiblas_get_version(void);
                                              int version[3];
 int
 main (void)
 {
 version[0] = version[1] = version[2] = 0;
                                              /*printf("%s", openblas_get_config());*/
-                                             if (sscanf(openblas_get_config(), "OpenBLAS %d.%d.%d",
-                                                        version, version+1, version+2) < 1)
-                                               return 1;
+                                             flexiblas_get_version(&version[0], &version[1], &version[2]);
                                              if (  10000 * version[0]
                                                    + 100 * version[1]
                                                          + version[2]
-                                                 < 10000 * 0
-                                                   + 100 * 2
-                                                         + 20)
+                                                 < 10000 * 3
+                                                   + 100 * 0
+                                                         + 0)
                                                return 1;
   ;
   return 0;
@@ -18298,7 +18294,7 @@ return conftest::cblas_dgemm ();
   return 0;
 }
 _ACEOF
-for ac_lib in '' openblas cblas blas
+for ac_lib in '' flexiblas cblas blas
 do
   if test -z "$ac_lib"; then
     ac_res="none required"
@@ -18365,7 +18361,7 @@ return conftest::dgeqrf ();
   return 0;
 }
 _ACEOF
-for ac_lib in '' openblas lapack
+for ac_lib in '' flexiblas lapack
 do
   if test -z "$ac_lib"; then
     ac_res="none required"
@@ -18432,7 +18428,7 @@ return conftest::dgeqrf_ ();
   return 0;
 }
 _ACEOF
-for ac_lib in '' openblas lapack
+for ac_lib in '' flexiblas lapack
 do
   if test -z "$ac_lib"; then
     ac_res="none required"
@@ -18499,7 +18495,7 @@ return conftest::DGEQRF ();
   return 0;
 }
 _ACEOF
-for ac_lib in '' openblas lapack
+for ac_lib in '' flexiblas lapack
 do
   if test -z "$ac_lib"; then
     ac_res="none required"
@@ -18566,7 +18562,7 @@ return conftest::DGEQRF_ ();
   return 0;
 }
 _ACEOF
-for ac_lib in '' openblas lapack
+for ac_lib in '' flexiblas lapack
 do
   if test -z "$ac_lib"; then
     ac_res="none required"
@@ -18648,12 +18644,12 @@ if test -n "$OPENBLASPCDIR"; then
     pkg_cv_OPENBLASPCDIR="$OPENBLASPCDIR"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"openblas\""; } >&5
-  ($PKG_CONFIG --exists --print-errors "openblas") 2>&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"flexiblas\""; } >&5
+  ($PKG_CONFIG --exists --print-errors "flexiblas") 2>&5
   ac_status=$?
   printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
-  pkg_cv_OPENBLASPCDIR=`$PKG_CONFIG --variable="pcfiledir" "openblas" 2>/dev/null`
+  pkg_cv_OPENBLASPCDIR=`$PKG_CONFIG --variable="pcfiledir" "flexiblas" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
 else
   pkg_failed=yes
@@ -18876,7 +18872,7 @@ fi
 then :
 
 
-        SAGE_OPENBLAS_PC_COMMAND="\$(LN) -sf \"$OPENBLASPCDIR/openblas.pc\" \"\$(@)\""
+        SAGE_OPENBLAS_PC_COMMAND="\$(LN) -sf \"$OPENBLASPCDIR/flexiblas.pc\" \"\$(@)\""
 
 
          if test x$sage_install_blas_pc = xyes
diff -up src/sage/env.py.orig src/sage/env.py
--- src/sage/env.py.orig	2023-01-15 17:21:15.296585738 -0700
+++ src/sage/env.py	2023-01-15 17:22:34.106086752 -0700
@@ -222,7 +222,7 @@ FOURTITWO_PPI = var("FOURTITWO_PPI")
 FOURTITWO_CIRCUITS = var("FOURTITWO_CIRCUITS")
 FOURTITWO_GROEBNER = var("FOURTITWO_GROEBNER")
 ARB_LIBRARY = var("ARB_LIBRARY", "arb")
-CBLAS_PC_MODULES = var("CBLAS_PC_MODULES", "cblas:openblas:blas")
+CBLAS_PC_MODULES = var("CBLAS_PC_MODULES", "flexiblas:cblas:openblas:blas")
 ECL_CONFIG = var("ECL_CONFIG", "ecl-config")
 NTL_INCDIR = var("NTL_INCDIR")
 NTL_LIBDIR = var("NTL_LIBDIR")
@@ -478,7 +478,7 @@ def cython_aliases(required_modules=None
     for lib, required in itertools.chain(((lib, True) for lib in required_modules),
                                          ((lib, False) for lib in optional_modules)):
         var = lib.upper().replace("-", "") + "_"
-        if lib == 'cblas':
+        if lib == 'cblas' or lib == 'lapack':
             lib = get_cblas_pc_module_name()
         if lib == 'zlib':
             aliases[var + "CFLAGS"] = ""