Reference:	https://cgit.freebsd.org/ports/commit/?id=f08b67611f0b19c0ee8d9053ee4d22e09b03f2b1

--- aws-crt-ffi/crt/aws-lc/crypto/fipsmodule/cpucap/cpu_ppc64le.c.orig	2022-07-30 03:57:26 UTC
+++ aws-crt-ffi/crt/aws-lc/crypto/fipsmodule/cpucap/cpu_ppc64le.c
@@ -25,7 +25,11 @@
 #endif
 
 void OPENSSL_cpuid_setup(void) {
+#if defined(__linux__)
   OPENSSL_ppc64le_hwcap2 = getauxval(AT_HWCAP2);
+#elif defined(__FreeBSD__)
+  elf_aux_info(AT_HWCAP2, &OPENSSL_ppc64le_hwcap2, sizeof(OPENSSL_ppc64le_hwcap2));
+#endif
 }
 
 int CRYPTO_is_PPC64LE_vcrypto_capable(void) {