On the wish list for a clean compile... (But it may be a bug, too).
fipsdrv.c:1757:43: warning: adding 'int' to a string does not append to the
string [-Wstring-plus-int] l2 = gcry_sexp_find_token (l1, "pqg"+idx, 1); ~~~~~^~~~
fipsdrv.c:1757:43: note: use array indexing to silence this warning
l2 = gcry_sexp_find_token (l1, "pqg"+idx, 1); ^ & [ ]