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-rw-r--r--lib/mkmf.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/mkmf.rb b/lib/mkmf.rb
index cd1620ee9a..e9c78dace7 100644
--- a/lib/mkmf.rb
+++ b/lib/mkmf.rb
@@ -62,6 +62,7 @@ end
$orgerr = $stderr.dup
$orgout = $stdout.dup
def xsystem command
+ Config.expand(command)
if $DEBUG
print command, "\n"
return system(command)