How to build OpenSSL 1.1.1 for 64 bit Android using NDK 17

Question

Failing to build OpenSSL for 64bit Android. Here are the steps I've taken:

1. Downloaded the setenv_android.sh from https://wiki.openssl.org/images/7/70/Setenv-android.sh
2. Downloaded OpenSSL 1.1.1 from https://www.openssl.org/source/old/1.1.1/openssl-1.1.1.tar.gz
3. Unpacked the tar file

4. Modified the setenv_android script so that running it produced this output:

   ANDROID_NDK_ROOT: /Users/spartygw/android-ndk-r17
   ANDROID_ARCH: arch-arm64
   ANDROID_EABI: aarch64-linux-android-4.9
   ANDROID_API: android-22
   ANDROID_SYSROOT: /Users/spartygw/android-ndk-r17/platforms/android-22/arch-arm64
   ANDROID_TOOLCHAIN: /Users/spartygw/android-ndk-r17/toolchains/aarch64-linux-android-4.9/prebuilt/darwin-x86_64/bin
   FIPS_SIG: 
   CROSS_COMPILE: aarch64-linux-android-
   ANDROID_DEV: /Users/spartygw/android-ndk-r17/platforms/android-22/arch-arm64/usr
   

5. Configured the openssl with: ./Configure no-rc5 no-idea no-md2 no-cast linux-aarch64

6. Ran make depend; make

Output:

In file included from crypto/aes/aesv8-armx.S:1:
crypto/arm_arch.h:55:6: error: "unsupported ARM architecture"
#    error "unsupported ARM architecture"
     ^
1 error generated.
make[1]: *** [crypto/aes/aesv8-armx.o] Error 1
make: *** [all] Error 2

This writeup makes it sound like I ran into this problem and stopped. I assure you I've spent a complete workday trying various things and googling to no avail. I don't want to litter the question with junk that I tried (passing in different ARM_ARCH values, trying other versions of openSSL, trying different NDKs).

Answer 1

The scripts and examples on OpenSSL Wiki are badly outdated. The specific build script does not support arm64.

Luckily, GitHub comes to rescue: try https://github.com/noloader/Android-PRNG/blob/master/setenv-android.sh.