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-rw-r--r--ext/socket/extconf.rb13
1 files changed, 13 insertions, 0 deletions
diff --git a/ext/socket/extconf.rb b/ext/socket/extconf.rb
index 443dd7d21e5..4d9f4e43a31 100644
--- a/ext/socket/extconf.rb
+++ b/ext/socket/extconf.rb
@@ -255,6 +255,19 @@ unless getaddr_info_ok and have_func("getnameinfo", headers) and have_func("geta
have_func("inet_ntop") or have_func("inet_ntoa")
have_func("inet_pton") or have_func("inet_aton")
have_func("getservbyport")
+ if have_func("gai_strerror")
+ unless checking_for("gai_strerror() returns const pointer") {!try_compile(<<EOF)}
+#{cpp_include(headers)}
+#include <stdlib.h>
+void
+conftest_gai_strerror_is_const()
+{
+ *gai_strerror(0) = 0;
+}
+EOF
+ $defs << "-DGAI_STRERROR_CONST"
+ end
+ end
have_header("arpa/nameser.h")
have_header("resolv.h")
end