On Thu, Aug 22, 2024 at 09:13:23AM +0200, Christophe Leroy wrote: > Replace -isystem by -idirafter > > But this implies that now tools/include/linux/linkage.h is > included instead of include/linux/linkage.h, so define a stub > for SYM_FUNC_START() and SYM_FUNC_END(). Thanks! I got step 1, but didn't figure out step 2, and tried to do things the lazy way instead: -#include <sodium/crypto_stream_chacha20.h> #include <sys/random.h> #include <string.h> #include <stdint.h> #include "../kselftest.h" extern void __arch_chacha20_blocks_nostack(uint8_t *dst_bytes, const uint8_t *key, uint32_t *counter, size_t nblocks); +extern int crypto_stream_chacha20(uint8_t *dst_bytes, uint64_t dst_len, const uint8_t *nonce, const uint8_t *key); Yours is obviously much better, so I'll queue that up instead.