JNI Build Wrapper for Android Studio

jnibuild.sh

#!/bin/bash
#
# The purpose of this script is to aide building native libs in 
# Android Studio using recent versions of Gradle 0.8.+. As of this 
# version of the Gradle plugin building jni doesn't work just yet.
# So as a workaround you need to disable Gradle from building 
# jni sources by adding the following to your project's build.gradle:
#
# android {
#   sourceSets.main {
#	    jni.srcDirs = []
#   }
# }
#
# For now you need to build native code manually with ndk-build.
# I highly recommend creating a jni/Application.mk file because 
# you can specify everything you need built:
#
# APP_ABI := all
# APP_PLATFORM := android-19
# APP_PROJECT_PATH := /path/to/project/src/main
#
# This script invokes ndk-build, setting the obj output folder
# to the build/jni-obj folder, to align more with Android Studio,
# and the lib output folder to jniLibs.
# 
# Finally, Gradle will pick up these libs in the jniLibs folder
# automatically now.  No need to tell Gradle where to look for 
# 'prebuilts'.
#
# The project path is hardcoded.  I put this script in my path
# in order to invoke a jni build from anywhere.  You can 
# modify it as needed, or put yours in your project somewhere
# and get Gradle to run it for you.
#
# You can also do 'jnibuild.sh clean' if needed.
#


# set this to the directory where your jni folder resides...
PROJECTDIR="/path/to/project/src/main"

pushd ${PROJECTDIR}

(	# subshell context for exported variables
export NDK_OUT="$PROJECTDIR/../../build/jni-obj";
export NDK_LIBS_OUT="$PROJECTDIR/jniLibs";
ndk-build -C ${PROJECTDIR} $1
)

popd