-const gccipher salsa20, salsa2012, salsa208;
-const gccipher salsa20_ietf, salsa2012_ietf, salsa208_ietf;
-const gccipher xsalsa20, xsalsa2012, xsalsa208;
+extern const gccipher salsa20, salsa2012, salsa208;
+extern const gccipher salsa20_ietf, salsa2012_ietf, salsa208_ietf;
+extern const gccipher xsalsa20, xsalsa2012, xsalsa208;