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-rw-r--r--ext/zlib/extconf.rb3
1 files changed, 2 insertions, 1 deletions
diff --git a/ext/zlib/extconf.rb b/ext/zlib/extconf.rb
index 13d0ee2052..d674544f22 100644
--- a/ext/zlib/extconf.rb
+++ b/ext/zlib/extconf.rb
@@ -10,11 +10,12 @@ require 'rbconfig'
dir_config 'zlib'
-
+libs = $libs
if %w'z libz zlib1 zlib zdll zlibwapi'.find {|z| have_library(z, 'deflateReset')} and
have_header('zlib.h') then
have_zlib = true
else
+ $libs = libs
unless File.directory?(zsrc = "#{$srcdir}/zlib")
dirs = Dir.open($srcdir) {|z| z.grep(/\Azlib-\d+[.\d]*\z/) {|x|"#{$srcdir}/#{x}"}}
dirs.delete_if {|x| !File.directory?(x)}