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-rw-r--r--ext/openssl/extconf.rb3
1 files changed, 3 insertions, 0 deletions
diff --git a/ext/openssl/extconf.rb b/ext/openssl/extconf.rb
index 02e06b7149b..457a17de0ff 100644
--- a/ext/openssl/extconf.rb
+++ b/ext/openssl/extconf.rb
@@ -96,6 +96,9 @@ have_func("X509_STORE_set_ex_data")
have_func("OBJ_NAME_do_all_sorted")
have_func("SSL_SESSION_get_id")
have_func("OPENSSL_cleanse")
+unless have_func("SSL_set_tlsext_host_name", ['openssl/ssl.h'])
+ have_macro("SSL_set_tlsext_host_name", ['openssl/ssl.h']) && $defs.push("-DHAVE_SSL_SET_TLSEXT_HOST_NAME")
+end
if try_compile("#define FOO(a, ...) foo(a, ##__VA_ARGS__)\n int x(){FOO(1);FOO(1,2);FOO(1,2,3);}\n")
$defs.push("-DHAVE_VA_ARGS_MACRO")
end