diff --git a/Modules/Setup.stdlib.in b/Modules/Setup.stdlib.in
index 42755c952f9..b22a956f0c4 100644
--- a/Modules/Setup.stdlib.in
+++ b/Modules/Setup.stdlib.in
@@ -28,6 +28,12 @@
 
 ############################################################################
 # Modules that should always be present (POSIX and Windows):
+@MODULE_ARRAY_TRUE@array arraymodule.c
+@MODULE__CONTEXTVARS_TRUE@_contextvars _contextvarsmodule.c
+
+# needs libm
+@MODULE_MATH_TRUE@math mathmodule.c
+@MODULE_CMATH_TRUE@cmath cmathmodule.c
 
 # needs libm and on some platforms librt
 @MODULE__DATETIME_TRUE@_datetime _datetimemodule.c
diff --git a/configure b/configure
index fd75c52ab3d..72285a6eeae 100755
--- a/configure
+++ b/configure
@@ -688,8 +688,16 @@ MODULE_OSSAUDIODEV_FALSE
 MODULE_OSSAUDIODEV_TRUE
 MODULE_GRP_FALSE
 MODULE_GRP_TRUE
+MODULE_CMATH_FALSE
+MODULE_CMATH_TRUE
+MODULE_MATH_FALSE
+MODULE_MATH_TRUE
 MODULE__DATETIME_FALSE
 MODULE__DATETIME_TRUE
+MODULE__CONTEXTVARS_FALSE
+MODULE__CONTEXTVARS_TRUE
+MODULE_ARRAY_FALSE
+MODULE_ARRAY_TRUE
 MODULE_TIME_FALSE
 MODULE_TIME_TRUE
 MODULE__IO_FALSE
@@ -19566,6 +19574,30 @@ fi
 
 
 
+     if true; then
+  MODULE_ARRAY_TRUE=
+  MODULE_ARRAY_FALSE='#'
+else
+  MODULE_ARRAY_TRUE='#'
+  MODULE_ARRAY_FALSE=
+fi
+
+
+
+
+
+     if true; then
+  MODULE__CONTEXTVARS_TRUE=
+  MODULE__CONTEXTVARS_FALSE='#'
+else
+  MODULE__CONTEXTVARS_TRUE='#'
+  MODULE__CONTEXTVARS_FALSE=
+fi
+
+
+
+
+
      if true; then
   MODULE__DATETIME_TRUE=
   MODULE__DATETIME_FALSE='#'
@@ -19580,6 +19612,34 @@ fi
 
 
 
+     if true; then
+  MODULE_MATH_TRUE=
+  MODULE_MATH_FALSE='#'
+else
+  MODULE_MATH_TRUE='#'
+  MODULE_MATH_FALSE=
+fi
+
+
+
+    as_fn_append MODULE_BLOCK "MODULE_MATH_LDFLAGS=$LIBM$as_nl"
+
+
+
+     if true; then
+  MODULE_CMATH_TRUE=
+  MODULE_CMATH_FALSE='#'
+else
+  MODULE_CMATH_TRUE='#'
+  MODULE_CMATH_FALSE=
+fi
+
+
+
+    as_fn_append MODULE_BLOCK "MODULE_CMATH_LDFLAGS=$LIBM$as_nl"
+
+
+
 
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module grp" >&5
 $as_echo_n "checking for stdlib extension module grp... " >&6; }
@@ -20745,10 +20805,26 @@ if test -z "${MODULE_TIME_TRUE}" && test -z "${MODULE_TIME_FALSE}"; then
   as_fn_error $? "conditional \"MODULE_TIME\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
 fi
+if test -z "${MODULE_ARRAY_TRUE}" && test -z "${MODULE_ARRAY_FALSE}"; then
+  as_fn_error $? "conditional \"MODULE_ARRAY\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${MODULE__CONTEXTVARS_TRUE}" && test -z "${MODULE__CONTEXTVARS_FALSE}"; then
+  as_fn_error $? "conditional \"MODULE__CONTEXTVARS\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
 if test -z "${MODULE__DATETIME_TRUE}" && test -z "${MODULE__DATETIME_FALSE}"; then
   as_fn_error $? "conditional \"MODULE__DATETIME\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
 fi
+if test -z "${MODULE_MATH_TRUE}" && test -z "${MODULE_MATH_FALSE}"; then
+  as_fn_error $? "conditional \"MODULE_MATH\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${MODULE_CMATH_TRUE}" && test -z "${MODULE_CMATH_FALSE}"; then
+  as_fn_error $? "conditional \"MODULE_CMATH\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
 if test -z "${MODULE_GRP_TRUE}" && test -z "${MODULE_GRP_FALSE}"; then
   as_fn_error $? "conditional \"MODULE_GRP\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
diff --git a/configure.ac b/configure.ac
index 63df5188d38..e0013c71ac8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -6075,7 +6075,11 @@ PY_STDLIB_MOD_SIMPLE([_io], [-I\$(srcdir)/Modules/_io], [])
 PY_STDLIB_MOD_SIMPLE([time], [], [$TIMEMODULE_LIB])
 
 dnl always enabled extension modules
+PY_STDLIB_MOD_SIMPLE([array])
+PY_STDLIB_MOD_SIMPLE([_contextvars])
 PY_STDLIB_MOD_SIMPLE([_datetime], [], [$TIMEMODULE_LIB $LIBM])
+PY_STDLIB_MOD_SIMPLE([math], [], [$LIBM])
+PY_STDLIB_MOD_SIMPLE([cmath], [], [$LIBM])
 
 dnl platform specific extensions
 PY_STDLIB_MOD([grp], [], [test "$ac_cv_func_getgrgid" = yes -o "$ac_cv_func_getgrgid_r" = yes])
diff --git a/setup.py b/setup.py
index 13ed636b13f..b2a3f4eb714 100644
--- a/setup.py
+++ b/setup.py
@@ -984,18 +984,16 @@ def detect_simple_extensions(self):
         #
 
         # array objects
-        self.add(Extension('array', ['arraymodule.c']))
+        self.addext(Extension('array', ['arraymodule.c']))
 
         # Context Variables
-        self.add(Extension('_contextvars', ['_contextvarsmodule.c']))
+        self.addext(Extension('_contextvars', ['_contextvarsmodule.c']))
 
         # math library functions, e.g. sin()
-        self.add(Extension('math',  ['mathmodule.c'],
-                           libraries=['m']))
+        self.addext(Extension('math',  ['mathmodule.c']))
 
         # complex math library functions
-        self.add(Extension('cmath', ['cmathmodule.c'],
-                           libraries=['m']))
+        self.addext(Extension('cmath', ['cmathmodule.c']))
 
         # time libraries: librt may be needed for clock_gettime()
         time_libs = []