Android NDK Make File and Maven Build Issues - maven

Question

Let me just say that I'm pretty new to Android NDK and so, I've been trying to go through Androids documentation on it. I've come across some issues with it when trying to utilize it in Maven (via plugins). My maven plugins snippets are below as well as my Android.mk file.
pom.xml (plugins portion):
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<compilerArgument>-AguiceAnnotationDatabasePackageName=my.package.name</compilerArgument>
<fork>true</fork>
</configuration>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>native-maven-plugin</artifactId>
<version>1.0-alpha-8</version>
<executions>
<execution>
<goals>
<goal>javah</goal>
</goals>
<phase>compile</phase>
<configuration>
<javahClassNames>
<javahClassName>my.package.name.MyClass</javahClassName>
</javahClassNames>
<javahVerbose>true</javahVerbose>
<javahPath>$(THE_JAVA_PATH)\bin\javah.exe</javahPath>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>com.simpligility.maven.plugins</groupId>
<artifactId>android-maven-plugin</artifactId>
<extensions>true</extensions>
<configuration>
<manifest>
<debuggable>true</debuggable>
<usesSdk>
<minSdkVersion>17</minSdkVersion>
<targetSdkVersion>18</targetSdkVersion>
</usesSdk>
</manifest>
<apk>
<debug>true</debug>
</apk>
<extractDuplicates>true</extractDuplicates>
<dex>
<coreLibrary>true</coreLibrary>
<jvmArguments>
<jvmArgument>-Xmx2048m</jvmArgument>
</jvmArguments>
</dex>
<nativeLibrariesDirectory>${to.ndk.libs}</nativeLibrariesDirectory>
<ndkOutputDirectory>${to.ndk.objs}/local</ndkOutputDirectory>
</configuration>
</plugin>
<plugin>
<groupId>com.simpligility.maven.plugins</groupId>
<artifactId>android-ndk-maven-plugin</artifactId>
<version>1.0.1-SNAPSHOT</version>
<executions>
<execution>
<goals>
<goal>ndk-build</goal>
</goals>
<configuration>
<target>${project.artifactId}</target>
<finalLibraryName>${project.artifactId}</finalLibraryName>
<ndkPath>$(THE_NDK_PATH)</ndkPath>
<makefile>jni/Android.mk</makefile>
<applicationMakefile>jni/Application.mk</applicationMakefile>
<architectures>${arch}</architectures>
<additionalCommandline>${ndk.args}</additionalCommandline>
<librariesOutputDirectory>${to.ndk.libs}</librariesOutputDirectory>
<objectsOutputDirectory>${to.ndk.objs}</objectsOutputDirectory>
<headerFilesDirectives>
<headerFilesDirective>
<directory>${basedir}/jni</directory>
<includes>
<include>**\/*.h</include>
</includes>
</headerFilesDirective>
<headerFilesDirective>
<directory>${project.build.directory}/native/javah</directory>
<includes>
<include>**\/*.h</include>
</includes>
</headerFilesDirective>
</headerFilesDirectives>
</configuration>
</execution>
</executions>
</plugin>
My directory structure is as follows MyRoot -> jni - > (c/cpp files). And of course the standard directory structure for java files. My Android.mk file is the following:
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE := my-lib
LOCAL_SRC_FILES := MyClass1.cpp \
MyFile1.c \
MyClass2.cpp
LOCAL_C_INCLUDES := $(LOCAL_PATH) \
$(LOCAL_PATH)/../target/native/javah
LOCAL_LDLIBS := -llog
LOCAL_CPP_FEATURES := rtti exceptions
LOCAL_CFLAGS += \
-D _NX_FEATURE_ATOMIC_C_PLUS_PLUS_11_ \
-D _NX_FEATURE_CAN_BUS_INTERFACE_ROUTER_ \
-D _NX_FEATURE_CAN_BUS_CREATED_BY_CONFIGURATION_ \
-D _NX_FEATURE_CAN_BUS_TC_SERVICE_ \
-D _NX_FEATURE_CRC_ \
-D _NX_FEATURE_EXCEPTIONS_ \
-D _NX_FEATURE_FILE_SUPPORT_CRT_ \
-D _NX_FEATURE_FLOAT_64_ \
-D _NX_FEATURE_LOG_ \
-D _NX_FEATURE_MUTEX_PTHREAD_ \
-D _NX_FEATURE_POSIX_SIGNAL_HANDLER_ \
-D _NX_FEATURE_RANDOM_ \
-D _NX_FEATURE_SECURITY_UNSET_INTENTIONALLY_ \
-D _NX_FEATURE_THREAD_ \
-D _NX_FEATURE_TRACE_STDIO_ \
-D _NX_FEATURE_TCP_IP_ \
-D _NX_FEATURE_XML_PARSER_ \
-D NX_CUSTOMER_FAR \
-D __STDC_FORMAT_MACROS
-D HAVE_FTRUNCATE=1 \
-D HAVE_GETCWD=1 \
-D HAVE_GETPAGESIZE=1 \
-D HAVE_GETTIMEOFDAY=1 \
-D HAVE_INTTYPES_H=1 \
-D HAVE_MALLOC=1 \
-D HAVE_MEMCHR=1 \
-D HAVE_MEMMOVE=1 \
-D HAVE_MEMORY_H=1 \
-D HAVE_MEMSET=1 \
-D HAVE_MKDIR=1 \
-D HAVE_MMAP=1 \
-D HAVE_MUNMAP=1 \
-D HAVE_NETDB_H=1 \
-D HAVE_PTRDIFF_T=1 \
-D HAVE_RMDIR=1 \
-D HAVE_SELECT=1 \
-D HAVE_SOCKET=1 \
-D HAVE_STDDEF_H=1 \
-D HAVE_STDINT_H=1 \
-D HAVE_STDLIB_H=1 \
-D HAVE_STRINGS_H=1 \
-D HAVE_STRING_H=1 \
-D HAVE_STRPBRK=1 \
-D HAVE_STRRCHR=1 \
-D HAVE_STRSPN=1 \
-D HAVE_STRTOUL=1 \
-D HAVE_STRTOULL=1 \
-D HAVE_SYS_PARAM_H=1 \
-D HAVE_SYS_SOCKET_H=1 \
-D HAVE_SYS_STAT_H=1 \
-D HAVE_SYS_TIME_H=1 \
-D HAVE_SYS_TYPES_H=1 \
-D HAVE_TERMIOS_H=1 \
-D HAVE_UNISTD_H=1
LOCAL_STATIC_LIBRARIES := $(ANDROID_MAVEN_PLUGIN_LOCAL_STATIC_LIBRARIES)
LOCAL_SHARED_LIBRARIES := $(ANDROID_MAVEN_PLUGIN_LOCAL_SHARED_LIBRARIES)
include $(BUILD_SHARED_LIBRARY)
# Important: Must be the last import in order for Android Maven Plugins paths to work
include $(ANDROID_MAVEN_PLUGIN_MAKEFILE)
So the error I'm getting Is the following:
...\android-ndk-r10e\ndk-build.cmd -C ...\MyRoot APP_BUILD_SCRIPT=jni/Android.mk NDK_APPLICATION_MK=jni/Application.mk NDK_TOOLCHAIN=x86_64-4.9 APP_ABI=x86_64 V=1 -B NDK_DEBUG=1 NDK_LIBS_OUT=...\MyRoot\target\ndk-libs NDK_OUT=...\MyRoot\target\ndk-obj MyRoot
make.exe: *** No rule to make target `MyRoot'. Stop.
I'm not sure why MyRoot is even being used. And when I do the command manually wihtout the 'MyRoot' the build process starts but it doesn't seem to use any of my include files listed in my Android.mk file (LOCAL_C_INCLUDES).
Its probably something silly but I'm at a lost here. Any help is appreciated.

Answer 1

At the end of your command you have a floating 'MyRoot'. I'm pretty sure removing that will resolve this error.
...\android-ndk-r10e\ndk-build.cmd -C ...\MyRoot \
APP_BUILD_SCRIPT=jni/Android.mk NDK_APPLICATION_MK=jni/Application.mk \
NDK_TOOLCHAIN=x86_64-4.9 APP_ABI=x86_64 V=1 -B NDK_DEBUG=1 \
NDK_LIBS_OUT=...\MyRoot\target\ndk-libs \
NDK_OUT=...\MyRoot\target\ndk-obj MyRoot # this MyRoot is unnecessary
You will also find that many of these options (APP_ABI, NDK_TOOLCHAIN, etc.) are unnecessary if your Application.mk and directory structure are set up correctly.