Error when building MbedTLS 3.6 with GCC with LTO

[Zhenhang1213]

Summary

Mbed TLS 3.6 does not build successfully with GCC when using LTO (link-time optimization

System information

Mbed TLS version (number or commit id): 3.6
Operating system and version: Linux kwephisprc06669 4.12.14-120-default #1 SMP Thu Nov 7 16:39:09 UTC 2019 (fd9dc36) x86_64 x86_64 x86_64 GNU/Linux
Configuration (if not default, please attach mbedtls_config.h):
#ifndef MBEDTLS_CONFIG_H
#define MBEDTLS_CONFIG_H
#include <string.h>
#include <stdio.h>
#include <securec.h>

//#define CHAR_BIT 8

#define MBEDTLS_ASN1_WRITE_C
#define MBEDTLS_PKCS1_V15
#define MBEDTLS_PKCS1_V21
#define MBEDTLS_ASN1_PARSE_C
#define MBEDTLS_BIGNUM_C
#define MBEDTLS_OID_C
#define MBEDTLS_RSA_C
#define MBEDTLS_SHA1_C
#define MBEDTLS_SHA224_C
#define MBEDTLS_SHA256_C
#define MBEDTLS_SHA384_C
#define MBEDTLS_SHA512_C
#define MBEDTLS_MD_C
#define MBEDTLS_MD5_C
#define MBEDTLS_NO_UDBL_DIVISION

#endif /* MBEDTLS_CONFIG_H */
Compiler and options (if you used a pre-built binary, please indicate how you obtained it): gcc arm64le 7.3
Additional environment information:

Expected behavior

Actual behavior

lto1: fatal error: target specific builtin not available
compilation terminated.
lto-wrapper: fatal error: /usr1/huawei/optix_rtn_6900_v100r024c00_srz_for_mbedtls/Bep/rtn/hcc_arm64le/bin/aarch64-target-linux-gnu-gcc returned 1 exit status
compilation terminated.
/usr/bin/../lib64/gcc/aarch64-target-linux-gnu/7.3.0/../../../../aarch64-target-linux-gnu/bin/ld: error: lto-wrapper failed
collect2: error: ld returned 1 exit status

Steps to reproduce

Additional information

[Zhenhang1213]

I find in common.h，define MBEDTLS_HAVE_NEON_INTRINSICS，so that failed， target doesn't support neon
#if defined(__ARM_NEON) #include <arm_neon.h> #define MBEDTLS_HAVE_NEON_INTRINSICS #elif defined(MBEDTLS_PLATFORM_IS_WINDOWS_ON_ARM64) #include <arm64_neon.h> #define MBEDTLS_HAVE_NEON_INTRINSICS #endif

[tom-cosgrove-arm]

target doesn't support neon

We only use intrinsics if __ARM_NEON is set by the compiler: what compiler flags were you using?

[Zhenhang1213]

target doesn't support neon

We only use intrinsics if __ARM_NEON is set by the compiler: what compiler flags were you using?

I set __ARM_NEON 1, my falut