diff --git a/tests/scripts/test_psa_constant_names.py b/tests/scripts/test_psa_constant_names.py
index 68bfe77..694e2a9 100755
--- a/tests/scripts/test_psa_constant_names.py
+++ b/tests/scripts/test_psa_constant_names.py
@@ -26,11 +26,12 @@
 from collections import namedtuple
 import itertools
 import os
-import platform
 import re
 import subprocess
 import sys
-import tempfile
+
+import scripts_path # pylint: disable=unused-import
+from mbedtls_dev import c_build_helper
 
 class ReadFileLineException(Exception):
     def __init__(self, filename, line_number):
@@ -304,121 +305,6 @@
     inputs.gather_arguments()
     return inputs
 
-def remove_file_if_exists(filename):
-    """Remove the specified file, ignoring errors."""
-    if not filename:
-        return
-    try:
-        os.remove(filename)
-    except OSError:
-        pass
-
-def create_c_file(file_label):
-    """Create a temporary C file.
-
-    * ``file_label``: a string that will be included in the file name.
-
-    Return ```(c_file, c_name, exe_name)``` where ``c_file`` is a Python
-    stream open for writing to the file, ``c_name`` is the name of the file
-    and ``exe_name`` is the name of the executable that will be produced
-    by compiling the file.
-    """
-    c_fd, c_name = tempfile.mkstemp(prefix='tmp-{}-'.format(file_label),
-                                    suffix='.c')
-    exe_suffix = '.exe' if platform.system() == 'Windows' else ''
-    exe_name = c_name[:-2] + exe_suffix
-    remove_file_if_exists(exe_name)
-    c_file = os.fdopen(c_fd, 'w', encoding='ascii')
-    return c_file, c_name, exe_name
-
-def generate_c_printf_expressions(c_file, cast_to, printf_format, expressions):
-    """Generate C instructions to print the value of ``expressions``.
-
-    Write the code with ``c_file``'s ``write`` method.
-
-    Each expression is cast to the type ``cast_to`` and printed with the
-    printf format ``printf_format``.
-    """
-    for expr in expressions:
-        c_file.write('    printf("{}\\n", ({}) {});\n'
-                     .format(printf_format, cast_to, expr))
-
-def generate_c_file(c_file,
-                    caller, header,
-                    main_generator):
-    """Generate a temporary C source file.
-
-    * ``c_file`` is an open stream on the C source file.
-    * ``caller``: an informational string written in a comment at the top
-      of the file.
-    * ``header``: extra code to insert before any function in the generated
-      C file.
-    * ``main_generator``: a function called with ``c_file`` as its sole argument
-      to generate the body of the ``main()`` function.
-    """
-    c_file.write('/* Generated by {} */'
-                 .format(caller))
-    c_file.write('''
-#include <stdio.h>
-''')
-    c_file.write(header)
-    c_file.write('''
-int main(void)
-{
-''')
-    main_generator(c_file)
-    c_file.write('''    return 0;
-}
-''')
-
-def get_c_expression_values(
-        cast_to, printf_format,
-        expressions,
-        caller=__name__, file_label='',
-        header='', include_path=None,
-        keep_c=False,
-): # pylint: disable=too-many-arguments
-    """Generate and run a program to print out numerical values for expressions.
-
-    * ``cast_to``: a C type.
-    * ``printf_format``: a printf format suitable for the type ``cast_to``.
-    * ``header``: extra code to insert before any function in the generated
-      C file.
-    * ``expressions``: a list of C language expressions that have the type
-      ``type``.
-    * ``include_path``: a list of directories containing header files.
-    * ``keep_c``: if true, keep the temporary C file (presumably for debugging
-      purposes).
-
-    Return the list of values of the ``expressions``.
-    """
-    if include_path is None:
-        include_path = []
-    c_name = None
-    exe_name = None
-    try:
-        c_file, c_name, exe_name = create_c_file(file_label)
-        generate_c_file(
-            c_file, caller, header,
-            lambda c_file: generate_c_printf_expressions(c_file,
-                                                         cast_to, printf_format,
-                                                         expressions)
-        )
-        c_file.close()
-        cc = os.getenv('CC', 'cc')
-        subprocess.check_call([cc] +
-                              ['-I' + dir for dir in include_path] +
-                              ['-o', exe_name, c_name])
-        if keep_c:
-            sys.stderr.write('List of {} tests kept at {}\n'
-                             .format(caller, c_name))
-        else:
-            os.remove(c_name)
-        output = subprocess.check_output([exe_name])
-        return output.decode('ascii').strip().split('\n')
-    finally:
-        remove_file_if_exists(exe_name)
-
 def run_c(type_word, expressions, include_path=None, keep_c=False):
     """Generate and run a program to print out numerical values for expressions."""
     if type_word == 'status':
@@ -427,7 +313,7 @@
     else:
         cast_to = 'unsigned long'
         printf_format = '0x%08lx'
-    return get_c_expression_values(
+    return c_build_helper.get_c_expression_values(
         cast_to, printf_format,
         expressions,
         caller='test_psa_constant_names.py for {} values'.format(type_word),