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-rw-r--r--ext/psych/extconf.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/psych/extconf.rb b/ext/psych/extconf.rb
index bba3ab2c63..65e83a3554 100644
--- a/ext/psych/extconf.rb
+++ b/ext/psych/extconf.rb
@@ -6,7 +6,7 @@ require 'fileutils'
dir_config 'libyaml'
-unless find_header('yaml.h') && find_library('yaml', 'yaml_get_version')
+if enable_config("bundled-libyaml", false) || !(find_header('yaml.h') && find_library('yaml', 'yaml_get_version'))
# Embed libyaml since we could not find it.
$VPATH << "$(srcdir)/yaml"