Build(perf): reuse existing ndk if available

Author: Mathias-Boulay

Dockerfile_port

@@ -32,7 +32,18 @@ RUN apt-get install -y \
 # JDK 17
 RUN apt-get install -y openjdk-17-jdk
 
-
 WORKDIR /home
 
+
+# NDK install
+ENV NDK_VERSION r25c
+ENV ANDROID_NDK_HOME /home/android-ndk-$NDK_VERSION
+RUN \
+    wget -nc -nv -O android-ndk-$NDK_VERSION-linux-x86_64.zip "https://dl.google.com/android/repository/android-ndk-$NDK_VERSION-linux.zip" \
+    && unzip -q android-ndk-$NDK_VERSION-linux-x86_64.zip \
+    && rm android-ndk-$NDK_VERSION-linux-x86_64.zip
+
+
+
+
 COPY . .

ci_build_global.sh

@@ -5,9 +5,14 @@ set -e
 export JDK_DEBUG_LEVEL=release
 
 if [[ "$BUILD_IOS" != "1" ]]; then
-  wget -nc -nv -O android-ndk-$NDK_VERSION-linux-x86_64.zip "https://dl.google.com/android/repository/android-ndk-$NDK_VERSION-linux.zip"
-  ./extractndk.sh
-  ./maketoolchain.sh
+  if [[ -d "$ANDROID_NDK_HOME" ]]; then
+    echo "NDK already exists: $ANDROID_NDK_HOME"
+  else
+    echo "Downloading NDK"
+    wget -nc -nv -O android-ndk-$NDK_VERSION-linux-x86_64.zip "https://dl.google.com/android/repository/android-ndk-$NDK_VERSION-linux.zip"
+    unzip -q android-ndk-$NDK_VERSION-linux-x86_64.zip
+  fi
+  cp devkit.info.${TARGET_SHORT} ${TOOLCHAIN}
 else
   chmod +x ios-arm64-clang
   chmod +x ios-arm64-clang++

extractndk.sh

@@ -44,19 +44,21 @@ if [[ "$BUILD_IOS" == "1" ]]; then
 else
 
 export JVM_PLATFORM=linux
-# Set NDK
 export API=21
-export NDK=$PWD/android-ndk-$NDK_VERSION
-export ANDROID_NDK_ROOT=$NDK
-#export TOOLCHAIN=$NDK/generated-toolchains/android-${TARGET_SHORT}-toolchain
-export TOOLCHAIN=$NDK/toolchains/llvm/prebuilt/linux-x86_64
+
+# Runners usually ship with a recent NDK already
+if [[ -z "$ANDROID_NDK_HOME" ]]
+then
+  export ANDROID_NDK_HOME=$PWD/android-ndk-$NDK_VERSION
+fi
+
+export TOOLCHAIN=$ANDROID_NDK_HOME/toolchains/llvm/prebuilt/linux-x86_64
 
 export ANDROID_INCLUDE=$TOOLCHAIN/sysroot/usr/include
 
 
 # If I'm right it should only need the dummy libs
 export CPPFLAGS="-I$ANDROID_INCLUDE -I$ANDROID_INCLUDE/$TARGET" # -I/usr/include -I/usr/lib
-#export LDFLAGS="-L$NDK/platforms/android-$API/arch-$TARGET_SHORT/usr/lib"
 export CPPFLAGS=""
 export LDFLAGS=""