openssl from prefab (google) (#3429)

Summary:
Pull Request resolved: https://github.com/facebook/flipper/pull/3429

Instead of downloading/patching/building openssl, use the prefab package prepared by Google.

changelog: Consume openssl from maven (prefab)

Reviewed By: passy

Differential Revision: D34143349

fbshipit-source-id: 0ca92be6628b1b27a59b3e4ad8278cf8fef6d5d8

xplat/CMakeLists.txt

@@ -42,6 +42,7 @@ add_compile_options(-DFOLLY_NO_CONFIG
                     -Wno-tautological-constant-compare
                     )
 
+find_package(openssl REQUIRED CONFIG)
 
 file(GLOB SOURCES Flipper/*.cpp)
 add_library(${PACKAGE_NAME} STATIC ${SOURCES})
@@ -70,7 +71,4 @@ target_include_directories(${PACKAGE_NAME} PRIVATE
         ${glog_DIR}/glog-0.3.5/src/
     )
 
-set(OPENSSL_LINK_DIRECTORIES ${external_DIR}/OpenSSL/libs/${ANDROID_ABI}/)
-find_path(OPENSSL_LIBRARY libssl.a HINTS ${OPENSSL_LINK_DIRECTORIES})
-
-target_link_libraries(${PACKAGE_NAME} folly rsocket glog double-conversion log event ${OPENSSL_LINK_DIRECTORIES}/libssl.a ${OPENSSL_LINK_DIRECTORIES}/libcrypto.a)
+target_link_libraries(${PACKAGE_NAME} folly rsocket glog double-conversion log event openssl::ssl openssl::crypto)

xplat/build.gradle

@@ -17,7 +17,7 @@ android {
         targetSdkVersion rootProject.targetSdkVersion
         externalNativeBuild {
             cmake {
-                arguments '-DANDROID_TOOLCHAIN=clang', '-DANDROID_STL=c++_static'
+                arguments '-DANDROID_TOOLCHAIN=clang', '-DANDROID_STL=c++_shared'
             }
         }
     }
@@ -33,10 +33,15 @@ android {
         }
     }
 
+    buildFeatures {
+        prefab true
+    }
+
     dependencies {
         implementation project(':third-party')
         implementation project(':rsocket')
         implementation project(':folly')
+        implementation deps.openssl
     }
 }