Android build system. Where is my wa.. native library? - android-ndk

Question

I trying to include a shared library through android build system. It named "libmd5b". I already check this library in NDK and it working well. But when I've built android I didn't found my library not in /system/lib and nor in else place. There is my actions step by step:
1) Put sources into ($AndroidSourceFolder)/external/libmd5b/jni
Android.mk
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_CFLAGS := -fPIC
LOCAL_LDLIBS := -L$(SYSROOT)/usr/lib
LOCAL_MODULE := md5b
LOCAL_SRC_FILES := md5b.cpp md5.cpp # source files
LOCAL_MODULE_TAGS := optional
# C++ inclusions:
LOCAL_STATIC_LIBRARIES += libstlport_static
LOCAL_C_INCLUDES += external/stlport/stlport bionic/ bionic/libstdc++/include
include $(BUILD_SHARED_LIBRARY)
Application.mk
APP_STL:=stlport_static
APP_MODULES := md5b
md5b.cpp
#include <jni.h>
#include <string>
#include <iostream>
#include <fstream>
#include <android/log.h>
#include "md5.h"
using namespace std;
extern "C" {
//Original name changed because we building library system wide visible.
JNIEXPORT jstring JNICALL Md5B
(JNIEnv * env, jobject obj, jstring fpath);
};
JNIEXPORT jstring JNICALL Md5B
(JNIEnv * env, jobject obj, jstring fpath)
{
string strpath = env->GetStringUTFChars(fpath, NULL);
ifstream inFile;
inFile.open(strpath.c_str());
string line;
string strFile;
while (!inFile.eof())
{
getline(inFile, line);
strFile += line;
}
inFile.close();
string md5R = md5(strFile);
char* chmd5R = new char [md5R.length()];
strcpy (chmd5R, md5R.c_str());
return env->NewStringUTF(chmd5R);
}
And there is other library files: md5.cpp and md5.h. This files in pure C++ without any jni preparations. So I think it is no important.
2) Next step is changing ($AndroidSourceFolder)/build/target/product/full.mk to look like this:
PRODUCT_PACKAGES := \
Camera \
libmd5b
$(call inherit-product, $(SRC_TARGET_DIR)/product/full_base_telephony.mk)
$(call inherit-product, $(SRC_TARGET_DIR)/board/generic/device.mk)
# Overrides
PRODUCT_NAME := full
PRODUCT_DEVICE := generic
PRODUCT_BRAND := Android
PRODUCT_MODEL := Full Android on Emulator
3) After all this I launching it to compile:
$source build/envsetup.sh
$lunch full-eng
$make
4) Making libmd5b:
make md5b
<build information>
Install: out/target/product/generic/system/lib/md5b.so
That's it. After end of 'make' I can't found my library. It should be in /system/lib but it is not there. So where is my water library? And why I hasn't got any errors while compile it?

Answer 1

Solved.
There was error in Android.mk file in section named LOCAL_MODULE. Module should be named with lib* preffix:
lib<module name>