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-rw-r--r--ext/socket/extconf.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/socket/extconf.rb b/ext/socket/extconf.rb
index d1ce000f5e..c2abcc06e6 100644
--- a/ext/socket/extconf.rb
+++ b/ext/socket/extconf.rb
@@ -173,7 +173,7 @@ EOF
$CFLAGS="-DHAVE_SA_LEN "+$CFLAGS
end
-have_header("netinet/tcp.h")
+have_header("netinet/tcp.h") if not /cygwin/ === RUBY_PLATFORM # for cygwin 1.1.5
have_header("netinet/udp.h")
$getaddr_info_ok = false