--- a/pygnulib/functions.py
+++ b/pygnulib/functions.py
@@ -16,6 +16,8 @@
 from __future__ import annotations
 
 import os.path
+import re
+import subprocess as sp
 from .constants import substart
 from .GLConfig import GLConfig
 
@@ -50,3 +52,15 @@ def rewrite_file_name(file_name: str, co
     else:  # file is not a special file
         result = file_name
     return os.path.normpath(result)
+
+def get_version(app: str) -> str:
+    result = sp.run([app, '--version'], capture_output=True, text=True)
+    version = re.sub(r".*[v ]([0-9])", r"\1", result.stdout)
+    version_lines = [line for line in version.splitlines() if re.search(r"^[0-9]", line)]
+    version = '\n'.join(version_lines) + "\n"
+    version = re.sub(r"[^.a-z0-9-\n].*", r"", version)
+    version = re.sub(r"^([0-9]*)[a-z-].*", r"\1", version, 1)
+    version = re.sub(r"\.0*([1-9])", r".\1", version)
+    version_lines = [line for line in version.splitlines() if line.strip()]
+    version = ''.join(version_lines[0]) + "\n"
+    return version.strip()
--- a/pygnulib/GLImport.py
+++ b/pygnulib/GLImport.py
@@ -40,6 +40,7 @@ from .constants import (
     rmtree,
 )
 from .functions import rewrite_file_name
+from .functions import get_version
 from .GLError import GLError
 from .GLConfig import GLConfig
 from .GLModuleSystem import GLModuleTable
@@ -125,7 +126,8 @@ class GLImport:
                             for version in versions })
             self.config.setAutoconfVersion(version)
             if version < 2.64:
-                raise GLError(4, version)
+                # If the version of autoconf in use is high enough, do not error.
+                if float(get_version('autoconf')) < 2.64: raise GLError(4, version)
 
         # Get other cached variables.
         path = joinpath(self.config['m4base'], 'gnulib-cache.m4')