ObjFW  Diff

	AS_IF([test x"$with_tls" = x"securetransport" \
	    -o x"$with_tls" = x"yes"], [
		AC_CHECK_HEADERS(Security/SecureTransport.h, [
			old_LIBS="$LIBS"
			LIBS="-framework Security -framework Foundation $LIBS"

			AC_CHECK_FUNC(SSLHandshake, [
				AC_DEFINE(HAVE_SECURE_TRANSPORT, 1,
					[Whether we have Secure Transport])

				tls_support="Secure Transport"
				TLS_LIBS="-framework Foundation $TLS_LIBS"
				TLS_LIBS="-framework Security $TLS_LIBS"

				AC_SUBST(OF_SECURE_TRANSPORT_TLS_STREAM_M,
					"OFSecureTransportTLSStream.m")

				AC_CHECK_FUNCS(SSLCreateContext)
			], [])

			LIBS="$old_LIBS"
		])
	])

	AS_IF([test x"$with_tls" = x"gnutls" \
	    -o \( x"$with_tls" = x"yes" -a x"$tls_support" = x"no" \)], [
		PKG_CHECK_MODULES(gnutls, [gnutls >= 3.5.0], [
			AC_DEFINE(HAVE_GNUTLS, 1, [Whether we have GnuTLS])

			tls_support="GnuTLS"
			TLS_CPPFLAGS="$gnutls_CFLAGS $TLS_CPPFLAGS"
			TLS_LIBS="$gnutls_LIBS $TLS_LIBS"

			AC_SUBST(OF_GNUTLS_TLS_STREAM_M, "OFGnuTLSTLSStream.m")
		], [
			dnl Disable default action-if-not-found, which exits

			ssl="ssl"
			crypto="crypto"
			;;
		esac

		AC_CHECK_LIB($ssl, SSL_set1_host, [
			AC_CHECK_HEADER(openssl/ssl.h, [
				AC_DEFINE(HAVE_OPENSSL, 1,
					[Whether we have OpenSSL])

				tls_support="OpenSSL"
				TLS_LIBS="-l$ssl -l$crypto $TLS_LIBS"

				AC_SUBST(OF_OPENSSL_TLS_STREAM_M,
					"OFOpenSSLTLSStream.m")
			])
		], [], [-l$crypto])