I’m writing an app in C++, that is using SDL2.
I’ve added the headers to the app/cpp/include
directory of the project.
I’ve also downloaded the source code from Github and compiled it into an Android shared object, but I can’t get the linker in Android Studio to find it.
Solutions online suggest creating a jniLibs
folder in the app
directory, and place there all the shared objects, but that doesn’t work.
That’s my CMakeList.txt file:
# For more information about using CMake with Android Studio, read the
# documentation: https://d.android.com/studio/projects/add-native-code.html.
# For more examples on how to use CMake, see https://github.com/android/ndk-samples.
# Sets the minimum CMake version required for this project.
cmake_minimum_required(VERSION 3.22.1)
# Declares the project name. The project name can be accessed via ${ PROJECT_NAME},
# Since this is the top level CMakeLists.txt, the project name is also accessible
# with ${CMAKE_PROJECT_NAME} (both CMake variables are in-sync within the top level
# build script scope).
project("easynes_android")
# Creates and names a library, sets it as either STATIC
# or SHARED, and provides the relative paths to its source code.
# You can define multiple libraries, and CMake builds them for you.
# Gradle automatically packages shared libraries with your APK.
#
# In this top level CMakeLists.txt, ${CMAKE_PROJECT_NAME} is used to define
# the target library name; in the sub-module's CMakeLists.txt, ${PROJECT_NAME}
# is preferred for the same purpose.
#
# In order to load a library into your app from Java/Kotlin, you must call
# System.loadLibrary() and pass the name of the library defined here;
# for GameActivity/NativeActivity derived applications, the same library name must be
# used in the AndroidManifest.xml file.
# Find all .cpp files in the current directory
file(GLOB CPP_SOURCE_FILES "*.cpp")
# Find all .c files in the current directory
file(GLOB C_SOURCE_FILES "*.c")
# Combine the lists of .cpp and .c files
set(SOURCE_FILES ${CPP_SOURCE_FILES} ${C_SOURCE_FILES})
# Add the library using the collected source files
add_library(${CMAKE_PROJECT_NAME} SHARED ${SOURCE_FILES})
# Specifies libraries CMake should link to your target library. You
# can link libraries from various origins, such as libraries defined in this
# build script, prebuilt third-party libraries, or Android system libraries.
target_link_libraries(${CMAKE_PROJECT_NAME}
# List libraries link to the target library
android
log
libSDL2.so)
the jniLibs
folder looks like the following:
.../app/jniLibs
--->arm64-v8a
-------> libSDL2.so
--->armeabi-v7a
-------> libSDL2.so
etc...
Thanks in advance