[openssl-dev] [openssl.org #4632] Configure does not honor ARMv8 and Aarch32 flags

[noloader@gmail.com via RT]

Working from 1a627771634adba9d4f3b5cf7be74d6bab428a5f on a Raspberry
Pi 3. Its ARMv8 with Broadcom SoC using A53 cores. It lacks Crypto
extensions, but includes vmull and crc32 (vmull include arrangements
other than u8). The gadget also runs Raspian, which is a 32-bit OS
with hard floats.

After Configure completes, the library's -march=armv7 takes precedence
over the user's -march=armv8-a{+crc}.

$ ./config -march=armv8-a+crc -mtune=cortex-a53
-mfpu=crypto-neon-fp-armv8 -mfloat-abi=hard
Operating system: armv7l-whatever-linux2
Configuring for linux-armv4
Configuring OpenSSL version 1.1.0-pre6-dev (0x0x10100006L)
    no-asan         [default]  OPENSSL_NO_ASAN (skip dir)
    no-crypto-mdebug [default]  OPENSSL_NO_CRYPTO_MDEBUG (skip dir)
    no-crypto-mdebug-backtrace [default]
OPENSSL_NO_CRYPTO_MDEBUG_BACKTRACE (skip dir)
    no-ec_nistp_64_gcc_128 [default]  OPENSSL_NO_EC_NISTP_64_GCC_128 (skip dir)
    no-egd          [default]  OPENSSL_NO_EGD (skip dir)
    no-fuzz-afl     [default]  OPENSSL_NO_FUZZ_AFL (skip dir)
    no-fuzz-libfuzzer [default]  OPENSSL_NO_FUZZ_LIBFUZZER (skip dir)
    no-heartbeats   [default]  OPENSSL_NO_HEARTBEATS (skip dir)
    no-md2          [default]  OPENSSL_NO_MD2 (skip dir)
    no-msan         [default]  OPENSSL_NO_MSAN (skip dir)
    no-rc5          [default]  OPENSSL_NO_RC5 (skip dir)
    no-sctp         [default]  OPENSSL_NO_SCTP (skip dir)
    no-ssl-trace    [default]  OPENSSL_NO_SSL_TRACE (skip dir)
    no-ssl3         [default]  OPENSSL_NO_SSL3 (skip dir)
    no-ssl3-method  [default]  OPENSSL_NO_SSL3_METHOD (skip dir)
    no-ubsan        [default]  OPENSSL_NO_UBSAN (skip dir)
    no-unit-test    [default]  OPENSSL_NO_UNIT_TEST (skip dir)
    no-weak-ssl-ciphers [default]  OPENSSL_NO_WEAK_SSL_CIPHERS (skip dir)
    no-zlib         [default]
    no-zlib-dynamic [default]
Configuring for linux-armv4
CC            =gcc
CFLAG         =-Wall -O3 -pthread  -march=armv8-a+crc
-mtune=cortex-a53 -mfpu=crypto-neon-fp-armv8 -mfloat-abi=hard
-march=armv7-a -Wa,--noexecstack
SHARED_CFLAG  =-fPIC
DEFINES       =DSO_DLFCN HAVE_DLFCN_H NDEBUG OPENSSL_THREADS
OPENSSL_NO_STATIC_ENGINE OPENSSL_PIC OPENSSL_BN_ASM_MONT
OPENSSL_BN_ASM_GF2m SHA1_ASM SHA256_ASM SHA512_ASM AES_ASM BSAES_ASM
GHASH_ASM ECP_NISTZ256_ASM POLY1305_ASM
LFLAG         =
PLIB_LFLAG    =
EX_LIBS       =-ldl
APPS_OBJ      =
CPUID_OBJ     =armcap.o armv4cpuid.o
UPLINK_OBJ    =
BN_ASM        =bn_asm.o armv4-mont.o armv4-gf2m.o
EC_ASM        =ecp_nistz256.o ecp_nistz256-armv4.o
DES_ENC       =des_enc.o fcrypt_b.o
AES_ENC       =aes_cbc.o aes-armv4.o bsaes-armv7.o aesv8-armx.o
BF_ENC        =bf_enc.o
CAST_ENC      =c_enc.o
RC4_ENC       =rc4_enc.o rc4_skey.o
RC5_ENC       =rc5_enc.o
MD5_OBJ_ASM   =
SHA1_OBJ_ASM  =sha1-armv4-large.o sha256-armv4.o sha512-armv4.o
RMD160_OBJ_ASM=
CMLL_ENC      =camellia.o cmll_misc.o cmll_cbc.o
MODES_OBJ     =ghash-armv4.o ghashv8-armx.o
PADLOCK_OBJ   =
CHACHA_ENC    =chacha-armv4.o
POLY1305_OBJ  =poly1305-armv4.o
BLAKE2_OBJ    =
PROCESSOR     =
RANLIB        =ranlib
ARFLAGS       =
PERL          =/usr/bin/perl

THIRTY_TWO_BIT mode
BN_LLONG mode
RC4 uses unsigned char

Configured for linux-armv4.

**********

$ ./Configure linux-arm64ilp32 -march=armv8-a+crc -mtune=cortex-a53
-mfpu=crypto-neon-fp-armv8 -mfloat-abi=hard
...
$ make -j 4
gcc  -I. -Icrypto/include -Iinclude -DDSO_DLFCN -DHAVE_DLFCN_H
-DNDEBUG -DOPENSSL_THREADS -DOPENSSL_NO_STATIC_ENGINE -DOPENSSL_PIC
-DOPENSSL_BN_ASM_MONT -DSHA1_ASM -DSHA256_ASM -DSHA512_ASM -DVPAES_ASM
-DECP_NISTZ256_ASM -DPOLY1305_ASM -DOPENSSLDIR="\"/usr/local/ssl\""
-DENGINESDIR="\"/usr/local/lib/engines-1.1\"" -Wall -O3 -pthread
-mabi=ilp32  -march=armv8-a+crc -mtune=cortex-a53
-mfpu=crypto-neon-fp-armv8 -mfloat-abi=hard -fPIC -MMD -MF
crypto/aes/aes_core.d.tmp -MT crypto/aes/aes_core.o -c -o
crypto/aes/aes_core.o crypto/aes/aes_core.c
gcc: error: unrecognized argument in option ‘-mabi=ilp32’
gcc: note: valid arguments to ‘-mabi=’ are: aapcs aapcs-linux apcs-gnu
atpcs iwmmxt
...


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