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Add Android (arm64) build script
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‎.gitignore

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*.res
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eepers.app
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*.apk.idsig
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android/lib
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android/build
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eepers.apk
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.idea
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.DS_Store

‎android/AndroidManifest.xml

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<?xml version="1.0" encoding="utf-8"?>
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<manifest xmlns:android="http://schemas.android.com/apk/res/android"
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package="io.github.tsoding.eepers"
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android:versionCode="12"
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android:versionName="1.2">
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<application
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android:allowBackup="false"
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android:fullBackupContent="false"
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android:icon="@drawable/ic_launcher"
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android:label="@string/app_name"
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android:hasCode="false">
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<activity android:name="android.app.NativeActivity"
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android:label="@string/app_name"
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android:configChanges="orientation|keyboardHidden"
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android:exported="true">
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<meta-data android:name="android.app.lib_name"
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android:value="eepers" />
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<intent-filter>
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<action android:name="android.intent.action.MAIN" />
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<category android:name="android.intent.category.LAUNCHER" />
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</intent-filter>
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</activity>
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</application>
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</manifest>

‎android/main.c

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#include <string.h>
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#include <stdlib.h>
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#include <android/log.h>
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#include <android/asset_manager.h>
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#include <android_native_app_glue.h>
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extern void eepersinit(void);
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extern void _ada_eepers(void);
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extern void eepersfinal(void);
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// Dummy implementations to workaround GNAT-LLVM bugs
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void __gnat_sigtramp(void) {}
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unsigned char _r_debug[640*1024] = {};
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#define LOG_TAG "Eepers"
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#define ALOGD(...) __android_log_print(ANDROID_LOG_DEBUG, LOG_TAG, __VA_ARGS__)
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extern const char *GetApplicationDirectory(void);
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extern const char *GetWorkingDirectory(void);
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extern void SetLoadFileDataCallback(void *);
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extern struct android_app *GetAndroidApp(void);
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static struct android_app *app;
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const unsigned char *LoadFileDataCallback(const char *fileName, int *dataSize) {
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if (memcmp(fileName, "assets/", strlen("assets/")) != 0) {
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return 0;
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}
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fileName += strlen("assets/");
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AAsset *asset = AAssetManager_open(app->activity->assetManager, fileName, AASSET_MODE_BUFFER);
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*dataSize = AAsset_getLength(asset);
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ALOGD("%s: Opening %s (size %d)", __func__, fileName, *dataSize);
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unsigned char *data = malloc(*dataSize);
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memcpy(data, AAsset_getBuffer(asset), *dataSize);
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return data;
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}
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int main(void) {
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app = GetAndroidApp();
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SetLoadFileDataCallback(LoadFileDataCallback);
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ALOGD("Asset manager: %p, path: %s", app->activity->assetManager, app->activity->internalDataPath);
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AAssetDir* dir = AAssetManager_openDir(app->activity->assetManager, "");
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ALOGD("Asset dir: %p", dir);
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const char *fileName = NULL;
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while ((fileName = AAssetDir_getNextFileName(dir)) != NULL) {
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ALOGD("Assets file: %s", fileName);
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}
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AAssetDir_close(dir);
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ALOGD("Initializing with eepersinit()");
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eepersinit();
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ALOGD("Entering Eepers main: _ada_eepers");
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_ada_eepers();
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ALOGD("Deinitializing with eepersfinal()");
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eepersfinal();
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ALOGD("%s: Done!", __func__);
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}

‎android/res/drawable-hdpi/ic_launcher.png

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../../../assets/icon.png

‎android/res/values/strings.xml

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<?xml version="1.0" encoding="utf-8"?>
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<resources>
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<string name="app_name">Eepers</string>
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</resources>

‎build-android.sh

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#!/bin/sh
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set -xe
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ABIS="arm64-v8a"
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API=33
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BUILD_TOOLS=$ANDROID_HOME/Sdk/build-tools/34.0.0
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TOOLCHAIN=$CLANG_R475365B_CUSTOM
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ANDROID_NDK=$ANDROID_HOME/Sdk/ndk/26.1.10909125
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NATIVE_APP_GLUE=$ANDROID_NDK/sources/android/native_app_glue
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LLVM_GNAT_BIN=$LLVM_GNAT/llvm-interface/bin
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SYSROOTS=$CLANG_R475365B_CUSTOM/../../../sysroots
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FLAGS="-ffunction-sections -funwind-tables -fstack-protector-strong -fPIC -Wall \
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-Wformat -Werror=format-security -no-canonical-prefixes \
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-DANDROID -DPLATFORM_ANDROID -D__ANDROID_API__=$API"
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mkdir -p android/res/drawable-hdpi
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mkdir -p android/lib/arm64-v8a
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mkdir -p android/build
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SRC="eepers.adb raylib.adb raymath.ads"
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OBJ="raylib raymath eepers"
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for ABI in $ABIS; do
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case "$ABI" in
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"armeabi-v7a")
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CCTYPE="armv7a-linux-androideabi"
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ARCH="arm"
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ARCH_SYSROOT="arm"
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LIBPATH="arm-linux-androideabi"
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ABI_FLAGS="-std=c99 -march=armv7-a -mfloat-abi=softfp -mfpu=vfpv3-d16"
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;;
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"arm64-v8a")
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CCTYPE="aarch64-linux-android"
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ARCH="aarch64"
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ARCH_SYSROOT="arm64"
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LIBPATH="aarch64-linux-android"
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ABI_FLAGS="-std=c99 -target aarch64"
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;;
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esac
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CC="$TOOLCHAIN/bin/clang"
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SYSROOT=$SYSROOTS/ndk/$ARCH_SYSROOT
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LLD=$CLANG_R475365B_CUSTOM/bin/ld.lld
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INCLUDES="-I$NATIVE_APP_GLUE -I$SYSROOT/usr/include/$CCTYPE -I$SYSROOT/usr/include"
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# Compile native app glue
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#$CC $INCLUDES --target=$CCTYPE$API -c $NATIVE_APP_GLUE/android_native_app_glue.c -o android/build/native_app_glue.o $FLAGS $ABI_FLAGS
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$CC $INCLUDES --target=$CCTYPE$API -c android/main.c -o android/build/main.o $FLAGS $ABI_FLAGS
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# Compile project
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for file in $SRC; do
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$LLVM_GNAT_BIN/llvm-gcc -g --target=aarch64-linux-android$API -fPIC -gnat2022 $file -c
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done
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$LLVM_GNAT/llvm-interface/bin/llvm-gnatbind -Leepers eepers.ali
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$LLVM_GNAT/llvm-interface/bin/llvm-gnatlink eepers.ali -o android/lib/$ABI/libeepers.so --LINK="$LLD" android/build/*.o -shared \
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--exclude-libs libatomic.a --build-id -z noexecstack -z relro -z now --warn-shared-textrel -u ANativeActivity_onCreate \
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--sysroot=$SYSROOT -L$CLANG_R475365B_CUSTOM/lib/clang/16.0.2/lib/linux -L$CLANG_R475365B_CUSTOM/lib/clang/16.0.2/lib/linux/$ARCH \
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-L$SYSROOT/usr/lib/$LIBPATH/$API -L$SYSROOT/usr/lib/$LIBPATH -Landroid/build -Lraylib/raylib-5.0_android_$ABI \
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-lraylib -llog -landroid -lEGL -lGLESv2 -lOpenSLES -lc -lm -ldl -l:libclang_rt.builtins-$ARCH-android.a -lunwind
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done
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# ______________________________________________________________________________
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#
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# Build APK
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# ______________________________________________________________________________
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#
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$BUILD_TOOLS/aapt package -f -m \
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-S android/res -J android/build -M android/AndroidManifest.xml \
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-I $ANDROID_HOME/Sdk/platforms/android-$API/android.jar
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# Add resources and assets to APK
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$BUILD_TOOLS/aapt package -f \
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-M android/AndroidManifest.xml -S android/res -A assets \
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-I $ANDROID_HOME/Sdk/platforms/android-$API/android.jar -F eepers.apk
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# Add libraries to APK
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cd android
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for ABI in $ABIS; do
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$BUILD_TOOLS/aapt add ../eepers.apk lib/$ABI/libeepers.so
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done
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cd ..
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$BUILD_TOOLS/zipalign -f 4 eepers.apk eepers.4.apk
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$BUILD_TOOLS/apksigner sign --ks ~/.android/debug.keystore --ks-pass pass:android eepers.4.apk
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mv -f eepers.4.apk eepers.apk

‎eepers.ads

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procedure Eepers;
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pragma Export (C, Eepers, "_ada_eepers");

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