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-rwxr-xr-xtool/mkconfig.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/tool/mkconfig.rb b/tool/mkconfig.rb
index e4a925cd51..92c765499f 100755
--- a/tool/mkconfig.rb
+++ b/tool/mkconfig.rb
@@ -167,7 +167,7 @@ def vars.expand(val, config = self)
val
end
vars["prefix"] = ""
-prefix = vars.expand(vars["rubyarchdir"])
+prefix = vars.expand(vars["rubyarchdir"]).sub!(vars.expand(vars["exec_prefix"]), '')
print " TOPDIR = File.dirname(__FILE__).chomp!(#{prefix.dump})\n"
print " DESTDIR = ", (drive ? "TOPDIR && TOPDIR[/\\A[a-z]:/i] || " : ""), "'' unless defined? DESTDIR\n"
print <<'ARCH' if universal