This page was roughly updated from the SDL2 version, but needs to be inspected for details that are out of date, and a few SDL2isms need to be cleaned out still, too. Read this page with some skepticism for now.
A lot of information can be found in README-android.
This page is more walkthrough-oriented.
sudo apt install openjdk-17-jdk ant android-sdk-platform-tools-commontools/bin/sdkmanager (or tools/android pre-2017) and install one API (>= 31)PATH="/usr/src/android-ndk-rXXx:$PATH" # for 'ndk-build'
PATH="/usr/src/android-sdk-linux/tools:$PATH" # for 'android'
PATH="/usr/src/android-sdk-linux/platform-tools:$PATH" # for 'adb'
export ANDROID_HOME="/usr/src/android-sdk-linux" # for gradle
export ANDROID_NDK_HOME="/usr/src/android-ndk-rXXx" # for gradlecd /usr/src/SDL3/build-scripts/
./androidbuild.sh org.libsdl.testgles ../test/testgles.ccd /usr/src/SDL3/build/org.libsdl.testgles/
./gradlew installDebugNotes:
sudo update-alternatives --config java and select jdk-17 as default; or use JAVA_HOME=/usr/lib/jvm/java-17-openjdk-amd64 ./gradlewjavax/xml/bind/annotation/XmlSchema, Could not initialize class com.android.sdklib.repository.AndroidSdkHandler: check the Android Gradle Plugin version in /android-project/build.gradle, e.g. classpath 'com.android.tools.build:gradle:3.1.0'/android-project/gradle/wrapper/gradle-wrapper.properties: distributionUrl=https\://services.gradle.org/distributions/gradle-4.9-all.zipandroid-project/app/build.gradle:android {
buildToolsVersion "28.0.1"
compileSdkVersion 28externalNativeBuild {
ndkBuild {
arguments "APP_PLATFORM=android-14"
abiFilters 'armeabi-v7a', 'arm64-v8a', 'x86', 'x86_64'ABIs [x86_64, arm64-v8a] are not supported for platform. Supported ABIs are [armeabi, armeabi-v7a, x86, mips]: upgrade to NDK >= 10apt install gradle libgradle-android-plugin-javaLet's modify SDL3_image/showimage.c to show a simple embedded image (e.g. XPM).
#include <SDL3/SDL.h>
#include <SDL3/SDL_main.h>
#include <SDL3/SDL_image.h>
/* XPM */
static char * icon_xpm[] = {
"32 23 3 1",
" c #FFFFFF",
". c #000000",
"+ c #FFFF00",
" ",
" ........ ",
" ..++++++++.. ",
" .++++++++++++. ",
" .++++++++++++++. ",
" .++++++++++++++++. ",
" .++++++++++++++++++. ",
" .+++....++++....+++. ",
" .++++.. .++++.. .++++. ",
" .++++....++++....++++. ",
" .++++++++++++++++++++. ",
" .++++++++++++++++++++. ",
" .+++++++++..+++++++++. ",
" .+++++++++..+++++++++. ",
" .++++++++++++++++++++. ",
" .++++++++++++++++++. ",
" .++...++++++++...++. ",
" .++............++. ",
" .++..........++. ",
" .+++......+++. ",
" ..++++++++.. ",
" ........ ",
" "};
int main(int argc, char *argv[])
{
SDL_Window *window;
SDL_Renderer *renderer;
SDL_Surface *surface;
SDL_Texture *texture;
int done;
SDL_Event event;
if (SDL_CreateWindowAndRenderer("Show a simple image", 0, 0, 0, &window, &renderer) < 0) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
"SDL_CreateWindowAndRenderer() failed: %s", SDL_GetError());
return(2);
}
surface = IMG_ReadXPMFromArray(icon_xpm);
texture = SDL_CreateTextureFromSurface(renderer, surface);
if (!texture) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
"Couldn't load texture: %s", SDL_GetError());
return(2);
}
SDL_SetWindowSize(window, 800, 480);
done = 0;
while (!done) {
while (SDL_PollEvent(&event)) {
if (event.type == SDL_EVENT_QUIT)
done = 1;
}
SDL_RenderTexture(renderer, texture, NULL, NULL);
SDL_RenderPresent(renderer);
SDL_Delay(100);
}
SDL_DestroyTexture(texture);
SDL_Quit();
return(0);
}Then let's make an Android app out of it. To compile:
cd /usr/src/SDL3/build-scripts/
./androidbuild.sh org.libsdl.showimage /usr/src/SDL3_image/showimage.c
cd /usr/src/SDL3/build/org.libsdl.showimage/
ln -s /usr/src/SDL3_image jni/
ln -s /usr/src/SDL3_image/external/libwebp-0.3.0 jni/webp
sed -i -e 's/^LOCAL_SHARED_LIBRARIES.*/& SDL3_image/' jni/src/Android.mk
ndk-build -j$(nproc)
ant debug installNotes:
You use autotools in your project and can't be bothering understanding ndk-build's cryptic errors? This guide is for you!
Note: this environment can be used for CMake too.
(FIXME: this needs to be updated for SDL3.)
cd /usr/src/
wget https://libsdl.org/release/SDL2-2.0.5.tar.gz
wget https://www.libsdl.org/projects/SDL_image/release/SDL2_image-2.0.1.tar.gz
wget https://www.libsdl.org/projects/SDL_mixer/release/SDL2_mixer-2.0.1.tar.gz
wget https://www.libsdl.org/projects/SDL_net/release/SDL2_net-2.0.1.tar.gz
wget https://www.libsdl.org/projects/SDL_ttf/release/SDL2_ttf-2.0.14.tar.gz
tar xf SDL2-2.0.5.tar.gz
tar xf SDL2_image-2.0.1.tar.gz
tar xf SDL2_mixer-2.0.1.tar.gz
tar xf SDL2_net-2.0.1.tar.gz
tar xf SDL2_ttf-2.0.14.tar.gz
ln -s SDL2-2.0.5 SDL2
ln -s SDL2_image-2.0.1 SDL2_image
ln -s SDL2_mixer-2.0.1 SDL2_mixer
ln -s SDL2_net-2.0.1 SDL2_net
ln -s SDL2_ttf-2.0.14 SDL2_ttfcd /usr/src/SDL3/
#git checkout -- . # remove traces of previous builds
cd build-scripts/
# edit androidbuild.sh and modify $ANDROID update project --target android-XX
./androidbuild.sh org.libsdl /dev/null
# doesn't matter if the actual build fails, it's just for setup
cd ../build/org.libsdl/rm -rf jni/src/ln -s /usr/src/SDL3_image jni/
ln -s /usr/src/SDL3_image/external/libwebp-0.3.0 jni/webp
ln -s /usr/src/SDL3_mixer jni/
ln -s /usr/src/SDL3_mixer/external/libmikmod-3.1.12 jni/libmikmod
ln -s /usr/src/SDL3_mixer/external/smpeg2-2.0.0 jni/smpeg2
ln -s /usr/src/SDL3_net jni/
ln -s /usr/src/SDL3_ttf jni/jni/Android.mk to disable some formats, e.g.:SUPPORT_MP3_SMPEG := false
include $(call all-subdir-makefiles)
ndk-build -j$(nproc)Note: no need to add System.loadLibrary calls in SDLActivity.java, your application will be linked to them and Android's ld-linux loads them automatically.
Now:
/usr/src/android-ndk-r8c/build/tools/make-standalone-toolchain.sh \
--platform=android-14 --install-dir=/usr/src/ndk-standalone-14-arm --arch=armNDK_STANDALONE=/usr/src/ndk-standalone-14-arm
PATH=$NDK_STANDALONE/bin:$PATHcd /usr/src/SDL3/build/org.libsdl/
for i in libs/armeabi/*; do ln -nfs $(pwd)/$i $NDK_STANDALONE/sysroot/usr/lib/; done
mkdir $NDK_STANDALONE/sysroot/usr/include/SDL3/
cp jni/SDL/include/* $NDK_STANDALONE/sysroot/usr/include/SDL3/
cp jni/*/SDL*.h $NDK_STANDALONE/sysroot/usr/include/SDL3/pkg-config and install a host-triplet-prefixed symlink in the PATH (auto-detected by autoconf):VERSION=0.9.12
cd /usr/src/
wget http://rabbit.dereferenced.org/~nenolod/distfiles/pkgconf-$VERSION.tar.gz
tar xf pkgconf-$VERSION.tar.gz
cd pkgconf-$VERSION/
mkdir native-android/ && cd native-android/
../configure --prefix=$NDK_STANDALONE/sysroot/usr
make -j$(nproc)
make install
ln -s ../sysroot/usr/bin/pkgconf $NDK_STANDALONE/bin/arm-linux-androideabi-pkg-config
mkdir $NDK_STANDALONE/sysroot/usr/lib/pkgconfig/.pc files for SDL:(Prepared as a reference guide for students, researchers, and practitioners who are interested in learning more about the book and obtaining it through legitimate channels.) 1. Introduction “ Network Theory ” by Smarajit Ghosh is a comprehensive textbook that introduces the mathematical foundations, models, and algorithms used to analyze complex networks. It is widely used in undergraduate and graduate courses in computer science, electrical engineering, and applied mathematics, as well as by professionals working on real‑world networked systems (communication networks, social networks, biological networks, etc.).
The steps above mirror the algorithmic treatment given in the textbook and can be extended to larger data sets. | Q | A | |------|-------| | Is there a free version of the book? | No complete free version is legally available. The author may share individual lecture slides or a pre‑print chapter on a personal or institutional website, but the full textbook remains under copyright. | | Can I share a PDF copy with classmates? | Sharing a full copyrighted PDF without permission violates copyright law. Instead, encourage classmates to obtain the book through the legitimate channels listed above. | | Is the book suitable for self‑study? | Yes. Each chapter contains clear explanations, examples, and exercises. Complementary online tutorials (e.g., NetworkX docs) can help reinforce the material. | | Does the book cover graph neural networks (GNNs)? | An introductory overview appears in the “Advanced Topics” section (Chapter 18). For an in‑depth treatment, see dedicated GNN textbooks or recent survey papers. | | What software is recommended for the exercises? | Python (NetworkX, NumPy, SciPy, scikit‑learn) is the primary environment, but MATLAB, R (igraph), or Julia are also viable. | 10. Conclusion “Network Theory” by Smarajit Ghosh is a well‑structured, mathematically rigorous, yet approachable text that equips readers with the tools to model, analyze, and engineer complex networks. By following the legitimate acquisition routes outlined above, you can gain full access to the material and start applying its concepts to real‑world problems. Smarajit Ghosh Network Theory Pdf Download LINK
The book blends theory with practical examples, providing a solid grounding in graph theory, probability, and algorithmic techniques while also exploring modern topics such as random graph models, network dynamics, and community detection. | Aspect | Details | |------------|--------------| | Title | Network Theory | | Author | Smarajit Ghosh | | Publisher | (Typically) Springer / CRC Press (verify the latest edition) | | Edition | 1st edition (published 2020) – check for newer editions | | Length | ~ 500 pages (including exercises and references) | | Target Audience | Upper‑level undergraduates, graduate students, and researchers in CS/EE/Applied Math | | Prerequisites | Basic linear algebra, probability, and introductory discrete mathematics | | ISBN | 978‑... (consult the publisher’s website for the exact number) | 3. Table of Contents (High‑Level) Below is a concise outline of the major sections and topics covered in the book. The exact chapter titles may vary slightly between editions. (Prepared as a reference guide for students, researchers,
You can add any other libraries (e.g.: SDL2_gfx, freetype, gettext, gmp...) using commands like:
mkdir cross-android/ && cd cross-android/
../configure --host=arm-linux-androideabi --prefix=$NDK_STANDALONE/sysroot/usr \
--with-some-option --enable-another-option \
--disable-shared
make -j$(nproc)
make installStatic builds (--disable-shared) are recommended for simplicity (no additional .so to declare).
(FIXME: is there an SDL3_gfx?)
Example with SDL2_gfx:
VERSION=1.0.3
wget http://www.ferzkopp.net/Software/SDL2_gfx/SDL2_gfx-$VERSION.tar.gz
tar xf SDL2_gfx-$VERSION.tar.gz
mv SDL2_gfx-$VERSION/ SDL2_gfx/
cd SDL2_gfx/
mkdir cross-android/ && cd cross-android/
../configure --host=arm-linux-androideabi --prefix=$NDK_STANDALONE/sysroot/usr \
--disable-shared --disable-mmx
make -j$(nproc)
make installYou can compile YOUR application using this technique, with some more steps to tell Android how to run it using JNI.
First, prepare an Android project:
/usr/src/SDL3/android-project skeleton as explained in README-android.md. You can leave it as-is in a first step.mkdir -p libs/armeabi/
for i in /usr/src/SDL3/build/org.libsdl/libs/armeabi/*; do ln -nfs $i libs/armeabi/; doneMake your project Android-aware:
/usr/src/SDL3/src/main/android/SDL_android_main.c in your project (comment out the line referencing "SDL_internal.h"). Compile it as C (not C++).configure.ac, detect Android:AM_CONDITIONAL(ANDROID, test "$host" = "arm-unknown-linux-androideabi")Makefile.am, tell Automake you'll build executables as libraries, using something like:if ANDROID
<!-- Build .so JNI libs rather than executables -->
AM_CFLAGS = -fPIC
AM_LDFLAGS += -shared
COMMON_OBJS += SDL_android_main.c
endifPATH=$NDK_STANDALONE/bin:$PATH
mkdir cross-android/ && cd cross-android/
../configure --host=arm-linux-androideabi \
--prefix=/android-aint-posix \
--with-your-option --enable-your-other-option ...
makearmeabi-v7a and document what devices support it); something like:mkdir cross-android-v7a/ && cd cross-android-v7a/
# .o: -march=armv5te -mtune=xscale -msoft-float -mthumb => -march=armv7-a -mfpu=vfpv3-d16 -mfloat-abi=softfp -mthumb
# .so: -march=armv7-a -Wl,--fix-cortex-a8
CFLAGS="-g -O2 -march=armv7-a -mfpu=vfpv3-d16 -mfloat-abi=softfp -mthumb" LFDLAGS="-march=armv7-a -Wl,--fix-cortex-a8" \
../configure --host=arm-linux-androideabi \
...Now you can install your pre-built binaries and build the Android project:
android-project/libs/armeabi/libmain.so..apk:android update project --name your_app --path . --target android-XX
ant debug
ant installdadb shell am start -a android.intenon.MAIN -n org.libsdl.app/org.libsdl.app.SDLActivity # replace with your app package(Work In Progress)
You can use our Android GCC toolchain using a simple toolchain file:
# CMake toolchain file
SET(CMAKE_SYSTEM_NAME Linux) # Tell CMake we're cross-compiling
include(CMakeForceCompiler)
# Prefix detection only works with compiler id "GNU"
CMAKE_FORCE_C_COMPILER(arm-linux-androideabi-gcc GNU)
SET(ANDROID TRUE)You then call CMake like this:
PATH=$NDK_STANDALONE/bin:$PATH
cmake \
-D CMAKE_TOOLCHAIN_FILE=../android_toolchain.cmake \
...If ant installd categorically refuses to install with Failure [INSTALL_FAILED_INSUFFICIENT_STORAGE], even if you have free local storage, that may mean anything. Check logcat first:
adb logcatIf the error logs are not helpful (likely ;')) try locating all past traces of the application:
find / -name "org...."and remove them all.
If the problem persists, you may try installing on the SD card:
adb install -s bin/app-debug.apkIf you get in your logcat:
SDL: Couldn't locate Java callbacks, check that they're named and typed correctly
this probably means your SDLActivity.java is out-of-sync with your libSDL3.so.