我的github：codetoys，所有代码都将会位于ctfc库中。已经放入库中我会指出在库中的位置。
这些代码大部分以Linux为目标但部分代码是纯C++的，可以在任何平台上使用。
之前已经建立好了交叉编译环境，并且已经完成本地编译GmSSL。这里仅仅是交叉编译GmSSL。
一、源码
官网下载最近版，应该是3.X，上传到交叉编译环境（Ubuntu 18）。
二、启动交叉编译环境
我的命令是这个：
source environment-setup-aarch64-unisoc-linux
三、cmake
因为之前已经本地编译过GmSSL，所以cmake已经可用。无需cmake的交叉编译版本，直接cmake即可：
mkdir build
cd build
cmake ..
输出如下：
user@vm-ubuntu:~/arm64/GmSSL/build$ cmake ..
-- The C compiler identification is GNU 7.2.1
-- Check for working C compiler: /opt/unisoc-initgc/udx710-module+unisoc-initgc-1.0+20201024+userdebug+native/sysroots/x86_64-unisocsdk-linux/usr/bin/aarch64-unisoc-linux/aarch64-unisoc-linux-gcc
-- Check for working C compiler: /opt/unisoc-initgc/udx710-module+unisoc-initgc-1.0+20201024+userdebug+native/sysroots/x86_64-unisocsdk-linux/usr/bin/aarch64-unisoc-linux/aarch64-unisoc-linux-gcc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- ENABLE_ASM_UNDERSCORE_PREFIX is ON
-- ENABLE_SM4_ECB is ON
-- ENABLE_SM4_OFB is ON
-- ENABLE_SM4_CFB is ON
-- ENABLE_SM4_CCM is ON
-- ENABLE_SM4_XTS is ON
-- ENABLE_SM3_XMSS is ON
-- ENABLE_SHA1 is ON
-- ENABLE_SHA2 is ON
-- ENABLE_AES is ON
-- ENABLE_CHACHA20 is ON
-- ENABLE_SM4_CBC_MAC is ON
-- Looking for getentropy
-- Looking for getentropy - found
-- have getentropy
-- ENABLE_SDF is ON
-- Detected Linux, configuring /etc/ld.so.conf.d/gmssl.conf
-- Configuring done
-- Generating done
-- Build files have been written to: /home/user/arm64/GmSSL/build
注意C编译器已经是交叉编译版本。
四、make
执行make会顺利完成：
[ 98%] Building C object CMakeFiles/sm2_keytest.dir/tests/sm2_keytest.c.o
[ 98%] Linking C executable bin/sm2_keytest
[ 98%] Built target sm2_keytest
Scanning dependencies of target x509_crltest
[ 99%] Building C object CMakeFiles/x509_crltest.dir/tests/x509_crltest.c.o
[ 99%] Linking C executable bin/x509_crltest
[ 99%] Built target x509_crltest
Scanning dependencies of target tls13test
[ 99%] Building C object CMakeFiles/tls13test.dir/tests/tls13test.c.o
[100%] Linking C executable bin/tls13test
[100%] Built target tls13test
五、不要install，检查输出
不需要执行install，需要的东西都在bin下面：
user@vm-ubuntu:~/arm64/GmSSL/build/bin$ ls -l
total 5752
-rwxrwxr-x 1 user user 36000 Aug 28 08:48 aestest
-rwxrwxr-x 1 user user 64376 Aug 28 08:48 asn1test
-rwxrwxr-x 1 user user 27488 Aug 28 08:48 base64test
-rwxrwxr-x 1 user user 20248 Aug 28 08:48 block_ciphertest
-rwxrwxr-x 1 user user 21592 Aug 28 08:48 chacha20test
-rwxrwxr-x 1 user user 68048 Aug 28 08:48 cmstest
-rwxrwxr-x 1 user user 22896 Aug 28 08:48 digesttest
-rwxrwxr-x 1 user user 32840 Aug 28 08:48 ectest
-rwxrwxr-x 1 user user 29304 Aug 28 08:48 gf128test
-rwxrwxr-x 1 user user 27576 Aug 28 08:48 ghashtest
-rwxrwxr-x 1 user user 884984 Aug 28 08:48 gmssl
-rwxrwxr-x 1 user user 20216 Aug 28 08:48 hextest
-rwxrwxr-x 1 user user 36112 Aug 28 08:48 hkdftest
-rwxrwxr-x 1 user user 29416 Aug 28 08:48 hmactest
lrwxrwxrwx 1 user user 13 Aug 28 08:48 libgmssl.so -> libgmssl.so.3
lrwxrwxrwx 1 user user 15 Aug 28 08:48 libgmssl.so.3 -> libgmssl.so.3.1
-rwxrwxr-x 1 user user 3242152 Aug 28 08:48 libgmssl.so.3.1
-rwxrwxr-x 1 user user 31704 Aug 28 08:48 pemtest
-rwxrwxr-x 1 user user 28304 Aug 28 08:48 pkcs8test
-rwxrwxr-x 1 user user 22656 Aug 28 08:48 sha1test
-rwxrwxr-x 1 user user 27096 Aug 28 08:48 sha224test
-rwxrwxr-x 1 user user 27096 Aug 28 08:48 sha256test
-rwxrwxr-x 1 user user 26880 Aug 28 08:48 sha384test
-rwxrwxr-x 1 user user 26904 Aug 28 08:48 sha512test
-rwxrwxr-x 1 user user 32752 Aug 28 08:48 sm2_enctest
-rwxrwxr-x 1 user user 31736 Aug 28 08:48 sm2_keytest
-rwxrwxr-x 1 user user 39144 Aug 28 08:48 sm2_signtest
-rwxrwxr-x 1 user user 59664 Aug 28 08:48 sm2_z256test
-rwxrwxr-x 1 user user 31496 Aug 28 08:48 sm3test
-rwxrwxr-x 1 user user 23640 Aug 28 08:48 sm4_cbc_mactest
-rwxrwxr-x 1 user user 38448 Aug 28 08:48 sm4_cbctest
-rwxrwxr-x 1 user user 30888 Aug 28 08:48 sm4_ccmtest
-rwxrwxr-x 1 user user 33312 Aug 28 08:48 sm4_cfbtest
-rwxrwxr-x 1 user user 40280 Aug 28 08:48 sm4_ctrtest
-rwxrwxr-x 1 user user 30408 Aug 28 08:48 sm4_ecbtest
-rwxrwxr-x 1 user user 35848 Aug 28 08:48 sm4_gcmtest
-rwxrwxr-x 1 user user 32192 Aug 28 08:48 sm4_ofbtest
-rwxrwxr-x 1 user user 36576 Aug 28 08:48 sm4_sm3_hmactest
-rwxrwxr-x 1 user user 28352 Aug 28 08:48 sm4test
-rwxrwxr-x 1 user user 29880 Aug 28 08:48 sm4_xtstest
-rwxrwxr-x 1 user user 88160 Aug 28 08:48 sm9test
-rwxrwxr-x 1 user user 28672 Aug 28 08:48 tls13test
-rwxrwxr-x 1 user user 44888 Aug 28 08:48 tlstest
-rwxrwxr-x 1 user user 31744 Aug 28 08:48 x509_algtest
-rwxrwxr-x 1 user user 48432 Aug 28 08:48 x509_crltest
-rwxrwxr-x 1 user user 70288 Aug 28 08:48 x509_exttest
-rwxrwxr-x 1 user user 41032 Aug 28 08:48 x509_oidtest
-rwxrwxr-x 1 user user 34640 Aug 28 08:48 x509_reqtest
-rwxrwxr-x 1 user user 28536 Aug 28 08:48 x509_strtest
-rwxrwxr-x 1 user user 48800 Aug 28 08:48 x509test
-rwxrwxr-x 1 user user 38520 Aug 28 08:48 zuctest
可以试一下make test，不出意外，全部都是失败（因为格式不对根本无法运行）。
执行file *看看文件格式：
user@vm-ubuntu:~/arm64/GmSSL/build/bin$ file *
aestest: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=fc96f4a8d6a284c1687f7d1806819f357ac93ca6, with debug_info, not stripped
asn1test: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=4bedc805b44a1124a70aa5e13bb8b3b6c295b643, with debug_info, not stripped
base64test: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=5c45f3d32e8c4b52d521f6ee091af042fd457fdf, with debug_info, not stripped
block_ciphertest: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=7a4852bc99b528a82a3eeb12b19b34e88cd121d0, with debug_info, not stripped
chacha20test: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=2d2994ee9497c7b2ab3208c7329861946cded845, with debug_info, not stripped
cmstest: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=75c77ade163dc0a4ec66b0e0b0771e66caa18eb0, with debug_info, not stripped
digesttest: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=46f9df696214b9cfd41e73027e7031d8aa56c224, with debug_info, not stripped
ectest: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=b223db93d1e6e8244e5ad05c8ab2b009a2c6a0eb, with debug_info, not stripped
gf128test: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=d059d62e624e2cc84dad1b47dccb1dcf5417683d, with debug_info, not stripped
ghashtest: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=fe079002472a4d4b2cb263708c77fe04620aa5a9, with debug_info, not stripped
gmssl: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=8ca8ef42860cb011088f39c3cfada2c957b785da, with debug_info, not stripped
hextest: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=571cbe3dd7353c7837c30dd90300d5b2d67f418a, with debug_info, not stripped
hkdftest: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=618fdf94e341921df437059a1babdd9f58d32c23, with debug_info, not stripped
hmactest: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=f16abfbab4fd99db3b5dacf514fd85d1b44086d4, with debug_info, not stripped
libgmssl.so: symbolic link to libgmssl.so.3
libgmssl.so.3: symbolic link to libgmssl.so.3.1
libgmssl.so.3.1: ELF 64-bit LSB shared object, ARM aarch64, version 1 (SYSV), dynamically linked, BuildID[sha1]=60e001e423da7002ea1de01c8df5c87315eae5f6, with debug_info, not stripped
pemtest: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=60e510012b03adc49449e7f5466fc545aa995b2c, with debug_info, not stripped
pkcs8test: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=ca6fcbfeb223678dec67ce06de7906fd52aca286, with debug_info, not stripped
sha1test: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=cef1160c01b54f196fc311016921af4bef62a545, with debug_info, not stripped
sha224test: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=5a369baac9ac5193ec8b0cc8843eca113d44d3c0, with debug_info, not stripped
sha256test: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=f1136d4989677f6717bab82e502d1f47b94be0df, with debug_info, not stripped
sha384test: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=e7ef0af8438708f94b87c592170e312c3d241e35, with debug_info, not stripped
sha512test: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=f68116f0fab592ddb8615830189f71709a20267b, with debug_info, not stripped
sm2_enctest: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=47204681d48a02b37943defbeec70202e3355fb2, with debug_info, not stripped
sm2_keytest: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=edf2fca1056da0ac2c1a0907063c5d4542d33cf4, with debug_info, not stripped
sm2_signtest: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=478900180a755cee6266fa621428e479e09038c4, with debug_info, not stripped
sm2_z256test: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=bb39b7143452049f919aad51b3a75cc748cc63f8, with debug_info, not stripped
sm3test: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=82868688521ed73e7dfb3a2635271a3293faa146, with debug_info, not stripped
sm4_cbc_mactest: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=b982deddbb02419e91ccee658ac1a712ae9f3735, with debug_info, not stripped
sm4_cbctest: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=1d207d6517326dfe70c0780a1590c721f9c25e40, with debug_info, not stripped
sm4_ccmtest: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=9e62f7933a0e0bc38029dffd32192120855a410a, with debug_info, not stripped
sm4_cfbtest: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=422b0f6479e9db053797da998039acd82b4dcbba, with debug_info, not stripped
sm4_ctrtest: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=47258c78e5b6d006ad9f99b915a5ce3630320cdc, with debug_info, not stripped
sm4_ecbtest: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=e0e1a64470cc5ec71d8be6d32301bbf17634bc2f, with debug_info, not stripped
sm4_gcmtest: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=c9bfb792e62aa8efe8909c446accaeb145ac679f, with debug_info, not stripped
sm4_ofbtest: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=4f082949d2222467fe6bf51e2d493362d9030ee8, with debug_info, not stripped
sm4_sm3_hmactest: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=ba6498dcf32bf4f504be757459fe07f841c955d5, with debug_info, not stripped
sm4test: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=d5f74db24752de276fe16c1d1508e07db2bb0144, with debug_info, not stripped
sm4_xtstest: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=6ec5091b09997748c12586dcacfc511b5b9e5b06, with debug_info, not stripped
sm9test: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=3a00608a2ebca841fe605e465c57eee37acb957c, with debug_info, not stripped
tls13test: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=9badbc59adb81fa4973bf34b5021c19c0970bd08, with debug_info, not stripped
tlstest: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=1967e4d7733c9f48256d068d87227acc1983021d, with debug_info, not stripped
x509_algtest: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=9964dc2e89bce1e0d021a31b0fee4f1452a62241, with debug_info, not stripped
x509_crltest: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=b135facea3168265a56a151582aaadb1044e4b90, with debug_info, not stripped
x509_exttest: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=aeae1b9c7970f8a8245f0839a43d9b15162dba08, with debug_info, not stripped
x509_oidtest: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=fe75932592d8bed6bba9c02d76e6448f56d9b430, with debug_info, not stripped
x509_reqtest: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=1506319bcb9b66f41d452afe984fbc59385df110, with debug_info, not stripped
x509_strtest: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=5b6c8fb5c3f3b377a43cba2be6c8d56d0685bc4b, with debug_info, not stripped
x509test: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=cf78223b886a1be0680161613f29e7deecdd95a0, with debug_info, not stripped
zuctest: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=c8647088245ddfcccfb15ab3b4a1319a04aad076, with debug_info, not stripped
全部都是ARM aarch64，说明交叉编译正确。
六、设备测试
输出文件虽然多，但是其实我们只需要gmssl和so文件，我先用ftp下载到本地，三个so变成了相同的文件（两个链接被替换为了链接目标）：
上传到设备测试，发现其实只要有libgmssl.so.3一个就可以了：
root# ./gmssl
./gmssl: error while loading shared libraries: libgmssl.so.3: cannot open shared object file: No such file or directory
root# ./gmssl
Usage: ./gmssl command [options]
command -help
Commands:
help Print this help message
version Print version
rand Generate random bytes
sm2keygen Generate SM2 keypair
sm2sign Generate SM2 signature
sm2verify Verify SM2 signature
。。。。。。
（这里是文档结束）