add update_build_option function to update specific build options after initializing the EasyBuild configuration

easybuild/tools/config.py

@@ -558,6 +558,18 @@ def build_option(key, **kwargs):
         raise EasyBuildError(error_msg)
 
 
+def update_build_option(key, value):
+    """
+    Update build option with specified name to given value.
+
+    WARNING: Use this with care, the build options are not expected to be changed during an EasyBuild session!
+    """
+    # BuildOptions() is a (singleton) frozen dict, so this is less straightforward that it seems...
+    build_options = BuildOptions()
+    build_options._FrozenDict__dict[key] = value
+    _log.warning("Build option '%s' was updated to: %s", key, build_option(key))
+
+
 def build_path():
     """
     Return the build path

test/framework/config.py

@@ -40,7 +40,7 @@
 from easybuild.tools import run
 from easybuild.tools.build_log import EasyBuildError
 from easybuild.tools.config import build_option, build_path, get_build_log_path, get_log_filename, get_repositorypath
-from easybuild.tools.config import install_path, log_file_format, log_path, source_paths
+from easybuild.tools.config import install_path, log_file_format, log_path, source_paths, update_build_option
 from easybuild.tools.config import BuildOptions, ConfigurationVariables
 from easybuild.tools.config import DEFAULT_PATH_SUBDIRS, init_build_options
 from easybuild.tools.filetools import copy_dir, mkdir, write_file
@@ -677,6 +677,13 @@ def test_get_build_log_path(self):
         init_config(args=['--tmp-logdir=%s' % build_log_path])
         self.assertEqual(get_build_log_path(), build_log_path)
 
+    def test_update_build_option(self):
+        """Test updating of a build option."""
+        self.assertEqual(build_option('banned_linked_shared_libs'), None)
+
+        update_build_option('banned_linked_shared_libs', '/usr/lib64/libssl.so.1.1')
+        self.assertEqual(build_option('banned_linked_shared_libs'), '/usr/lib64/libssl.so.1.1')
+
 
 def suite():
     return TestLoaderFiltered().loadTestsFromTestCase(EasyBuildConfigTest, sys.argv[1:])