Workaround for three known issues in OpenSSL for Android.

cmake/configs/default.cmake

@@ -84,8 +84,7 @@ hunter_config(OpenCL-cpp VERSION 2.0.10-p0)
 hunter_config(OpenCV VERSION 3.2.0-p1)
 hunter_config(OpenCV-Extra VERSION 3.0.0)
 hunter_config(OpenNMTTokenizer VERSION 0.2.0-p1)
-if(MSVC OR ANDROID)
-  # FIXME: https://travis-ci.org/ingenue/hunter/jobs/215460184
+if(MSVC)
   # FIXME: https://ci.appveyor.com/project/ingenue/hunter/build/1.0.1470
   hunter_config(OpenSSL VERSION 1.0.2l)
 else()

cmake/projects/OpenSSL/schemes/url_sha1_openssl.cmake.in

@@ -31,6 +31,12 @@ hunter_test_string_not_empty("@HUNTER_GLOBAL_SCRIPT_DIR@")
 if(APPLE)
   set(configure_command "./Configure")
   set(configure_opts "darwin64-x86_64-cc")
+elseif(ANDROID)
+  # Using the ./config script is currently broken with -no* CFLAGS on ALL versions
+  # * https://github.com/openssl/openssl/issues/3493
+  # * https://github.com/openssl/openssl/blob/OpenSSL_1_1_0-stable/Configure#L560
+  # * https://wiki.openssl.org/index.php/Compilation_and_Installation#Configure_.26_Config
+  set(configure_command "./Configure")
 else()
   set(configure_command "./config")
 endif()
@@ -54,12 +60,24 @@ if(ANDROID)
   # * https://wiki.openssl.org/index.php/Android#Build_the_OpenSSL_Library
   # Set environment variables similar to 'setenv-android.sh' script:
   # * https://wiki.openssl.org/index.php/Android#Adjust_the_Cross-Compile_Script
-  set(configure_command
-      # Ignored. Prevents script from checking host uname
-      RELEASE=2.6.37
-      SYSTEM=android
-      ARCH=${ANDROID_SSL_ARCH}
-      ${configure_command})
+
+  # Using documented method (./config script):
+  #set(configure_command
+      # Ignored. Prevents ./config from checking host uname
+  #   RELEASE=2.6.37
+  #   SYSTEM=android
+  #   ARCH=${CMAKE_ANDROID_ARCH}
+  #   ${configure_command})
+
+  # Using android-* targets is currently broken for Clang on ALL versions
+  # * https://github.com/openssl/openssl/pull/2229
+  # The ./config script only detects Android x86 and armv7 targets anyway.
+  # * https://github.com/openssl/openssl/issues/2490
+  if (CMAKE_ANDROID_ARCH MATCHES "mips64|arm64|x86_64")
+    set(configure_opts "linux-generic64")
+  else()
+    set(configure_opts "linux-generic32")
+  endif()
 endif()
 
 # Pass C compiler through