macOS - issue for implementation - "This header is only meant to be used on x86 and x64 architecture" about kyber

[KursatCAKAL]

I handled the issue by using CLion. Please use Reference_Implementation under "ref" directory. Open File from CLion menu (File -> Open -> ref (or any file name which includes original content))

I installed OpenSSL to my MacOS by using brew package manager. So, look for installed path of OpenSSL.

brew info openssl

Please update your Makefile like below:

CC=/usr/bin/gcc
CFLAGS+= -O3 -march=native -fomit-frame-pointer
LDFLAGS+= -L/opt/homebrew/opt/openssl@3/lib -lssl -lcrypto

OPENSSL_INCLUDE = /opt/homebrew/opt/openssl@3/include
OPENSSL_LIB = /opt/homebrew/opt/openssl@3/lib

SOURCES= cbd.c fips202.c indcpa.c kem.c ntt.c poly.c polyvec.c PQCgenKAT_kem.c reduce.c rng.c verify.c symmetric-shake.c
HEADERS= api.h cbd.h fips202.h indcpa.h ntt.h params.h poly.h polyvec.h reduce.h rng.h verify.h symmetric.h

PQCgenKAT_kem: $(HEADERS) $(SOURCES)
	$(CC) $(CFLAGS) -I$(OPENSSL_INCLUDE) -L$(OPENSSL_LIB) -o $@ $(SOURCES) $(LDFLAGS)

.PHONY: clean

clean:
	-rm PQCgenKAT_kem