paralellize android build much better

* split up configure step and build step so that build steps goes all at once
* update ci to use new build structure for android

.drone.jsonnet

@@ -98,7 +98,7 @@ local apk_builder(name, image, extra_cmds=[], allow_fail=false, jobs=6) = {
       commands: [
         'VERBOSE=1 JOBS=' + jobs + ' NDK=/usr/lib/android-ndk ./contrib/android.sh',
         'git clone https://github.com/oxen-io/lokinet-flutter-app lokinet-mobile',
-        'cp -av lokinet-jni-*/* lokinet-mobile/lokinet_lib/android/src/main/jniLibs/',
+        'cp -av build-android/out/* lokinet-mobile/lokinet_lib/android/src/main/jniLibs/',
         'cd lokinet-mobile',
         'flutter build apk --debug',
         'cd  ..',

contrib/android-configure.sh

@@ -0,0 +1,53 @@
+#!/bin/bash
+set -e
+set +x
+
+default_abis="armeabi-v7a arm64-v8a x86 x86_64"
+build_abis=${ABIS:-$default_abis}
+
+test x$NDK = x && echo "NDK env var not set"
+test x$NDK = x && exit 1
+
+echo "building abis: $build_abis"
+
+root="$(readlink -f $(dirname $0)/../)"
+build=$root/build-android
+mkdir -p $build
+cd $build
+
+for abi in $build_abis; do
+    mkdir -p build-$abi
+    cd build-$abi
+    cmake \
+        -G 'Unix Makefiles' \
+        -DANDROID=ON \
+        -DANDROID_ABI=$abi \
+        -DANDROID_ARM_MODE=arm \
+        -DANDROID_PLATFORM=android-23 \
+        -DANDROID_STL=c++_static \
+        -DCMAKE_TOOLCHAIN_FILE=$NDK/build/cmake/android.toolchain.cmake \
+        -DBUILD_STATIC_DEPS=ON \
+        -DBUILD_PACKAGE=ON \
+        -DBUILD_SHARED_LIBS=OFF \
+        -DBUILD_TESTING=OFF \
+        -DBUILD_LIBLOKINET=OFF \
+        -DWITH_TESTS=OFF \
+        -DNATIVE_BUILD=OFF \
+        -DSTATIC_LINK=ON \
+        -DWITH_SYSTEMD=OFF \
+        -DFORCE_OXENMQ_SUBMODULE=ON \
+        -DSUBMODULE_CHECK=OFF \
+        -DWITH_LTO=OFF \
+        -DCMAKE_BUILD_TYPE=Release \
+        $@ $root
+    cd -
+done
+rm -f $build/Makefile
+echo "# generated makefile" >> $build/Makefile
+echo "all: $build_abis" >> $build/Makefile
+for abi in $build_abis; do
+    echo -ne "$abi:\n\t" >> $build/Makefile
+    echo -ne '$(MAKE) -C ' >> $build/Makefile
+    echo "build-$abi lokinet-android" >> $build/Makefile
+    echo -ne "\tmkdir -p out/$abi && cp build-$abi/jni/liblokinet-android.so out/$abi/liblokinet-android.so\n\n" >> $build/Makefile
+done

contrib/android.sh

@@ -2,50 +2,9 @@
 set -e
 set +x
 
-default_abis="armeabi-v7a arm64-v8a x86 x86_64"
-build_abis=${ABIS:-$default_abis}
-
 test x$NDK = x && echo "NDK env var not set"
 test x$NDK = x && exit 1
-
-echo "building abis: $build_abis"
-
 root="$(readlink -f $(dirname $0)/../)"
-out=$root/lokinet-jni-$(git describe || echo unknown)
-mkdir -p $out
-mkdir -p $root/build-android
-cd $root/build-android
-
-for abi in $build_abis; do
-    mkdir -p build-$abi $out/$abi
-    cd build-$abi
-    cmake \
-        -G 'Unix Makefiles' \
-        -DANDROID=ON \
-        -DANDROID_ABI=$abi \
-        -DANDROID_ARM_MODE=arm \
-        -DANDROID_PLATFORM=android-23 \
-        -DANDROID_STL=c++_static \
-        -DCMAKE_TOOLCHAIN_FILE=$NDK/build/cmake/android.toolchain.cmake \
-        -DBUILD_STATIC_DEPS=ON \
-        -DBUILD_PACKAGE=ON \
-        -DBUILD_SHARED_LIBS=OFF \
-        -DBUILD_TESTING=OFF \
-        -DBUILD_LIBLOKINET=OFF \
-        -DWITH_TESTS=OFF \
-        -DNATIVE_BUILD=OFF \
-        -DSTATIC_LINK=ON \
-        -DWITH_SYSTEMD=OFF \
-        -DFORCE_OXENMQ_SUBMODULE=ON \
-        -DSUBMODULE_CHECK=OFF \
-        -DWITH_LTO=OFF \
-        -DCMAKE_BUILD_TYPE=Release \
-        $@ $root
-    make lokinet-android -j${JOBS:-$(nproc)}
-    cp jni/liblokinet-android.so $out/$abi/liblokinet-android.so
-    cd -
-done
-
-
-echo
-echo "build artifacts outputted to $out"
+cd "$root"
+./contrib/android-configure.sh $@
+make -C build-android -j ${JOBS:-$(nproc)}