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Fixed bug 3918 - CMake support for android project

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1bsyl committed Aug 11, 2019
1 parent 7f5fc74 commit 155087d106042a382badf531d6fb5e28cb662037
@@ -925,7 +925,9 @@ if(ANDROID)
set(HAVE_SDL_VIDEO TRUE)

# Core stuff
find_library(ANDROID_DL_LIBRARY dl)
# find_library(ANDROID_DL_LIBRARY dl)
# FIXME failing dlopen https://github.com/android-ndk/ndk/issues/929
find_library(ANDROID_DL_LIBRARY NAMES libdl.so dl)
find_library(ANDROID_LOG_LIBRARY log)
find_library(ANDROID_LIBRARY_LIBRARY android)
list(APPEND EXTRA_LIBS ${ANDROID_DL_LIBRARY} ${ANDROID_LOG_LIBRARY} ${ANDROID_LIBRARY_LIBRARY})
@@ -1903,7 +1905,9 @@ if(ANDROID)
set_target_properties(hidapi PROPERTIES LINK_FLAGS_DEBUG "/NODEFAULTLIB")
set_target_properties(hidapi PROPERTIES STATIC_LIBRARY_FLAGS "/NODEFAULTLIB")
endif()
target_link_libraries(hidapi log)
if(HAVE_HIDAPI)
target_link_libraries(hidapi log)
endif()
endif()

if(SDL_STATIC)
@@ -22,6 +22,11 @@ android {
arguments "APP_PLATFORM=android-16"
abiFilters 'armeabi-v7a', 'arm64-v8a', 'x86', 'x86_64'
}
// cmake {
// arguments "-DANDROID_APP_PLATFORM=android-16", "-DANDROID_STL=c++_static"
// // abiFilters 'armeabi-v7a', 'arm64-v8a', 'x86', 'x86_64'
// abiFilters 'arm64-v8a'
// }
}
}
buildTypes {
@@ -38,6 +43,9 @@ android {
ndkBuild {
path 'jni/Android.mk'
}
// cmake {
// path 'jni/CMakeLists.txt'
// }
}

}
@@ -0,0 +1,18 @@
cmake_minimum_required(VERSION 3.6)

project(GAME)

# Settings
set(HIDAPI OFF CACHE BOOL "" FORCE)

# armeabi-v7a requires cpufeatures library
# include(AndroidNdkModules)
# android_ndk_import_module_cpufeatures()


# SDL sources are in a subfolder named "SDL"
add_subdirectory(SDL)

# Your game and its CMakeLists.txt are in a subfolder named "src"
add_subdirectory(src)

@@ -0,0 +1,13 @@
cmake_minimum_required(VERSION 3.6)

project(MY_APP)

find_library(SDL2 SDL2)

add_library(main SHARED)

target_sources(main PRIVATE YourSourceHere.c)

target_link_libraries(main SDL2)


@@ -82,6 +82,23 @@ For more complex projects, follow these instructions:

4b. If you want to build manually, run './gradlew installDebug' in the project directory. This compiles the .java, creates an .apk with the native code embedded, and installs it on any connected Android device


If you already have a project that uses CMake, the instructions change somewhat:

1. Do points 1 and 2 from the instruction above.
2. Edit "<project>/app/build.gradle" to comment out or remove sections containing ndk-build
and uncomment the cmake sections. Add arguments to the CMake invocation as needed.
3. Edit "<project>/app/jni/CMakeLists.txt" to include your project (it defaults to
adding the "src" subdirectory). Note that you'll have SDL2, SDL2main and SDL2-static
as targets in your project, so you should have "target_link_libraries(yourgame SDL2 SDL2main)"
in your CMakeLists.txt file. Also be aware that you should use add_library() instead of
add_executable() for the target containing your "main" function.

If you wish to use Android Studio, you can skip the last step.

4. Run './gradlew installDebug' or './gradlew installRelease' in the project directory. It will build and install your .apk on any
connected Android device

Here's an explanation of the files in the Android project, so you can customize them:

android-project/app
@@ -90,10 +107,12 @@ Here's an explanation of the files in the Android project, so you can customize
jni/ - directory holding native code
jni/Application.mk - Application JNI settings, including target platform and STL library
jni/Android.mk - Android makefile that can call recursively the Android.mk files in all subdirectories
jni/CMakeLists.txt - Top-level CMake project that adds SDL as a subproject
jni/SDL/ - (symlink to) directory holding the SDL library files
jni/SDL/Android.mk - Android makefile for creating the SDL shared library
jni/src/ - directory holding your C/C++ source
jni/src/Android.mk - Android makefile that you should customize to include your source code and any library references
jni/src/CMakeLists.txt - CMake file that you may customize to include your source code and any library references
src/main/assets/ - directory holding asset files for your application
src/main/res/ - directory holding resources for your application
src/main/res/mipmap-* - directories holding icons for different phone hardware

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