Qt Application build in launchpad - issue in linking libraries

I am having Qt application. Here qt .pro file.
# Add more folders to ship with the application, here
folder_01.source = qml/qtcam
folder_01.target = qml
DEPLOYMENTFOLDERS = folder_01
QT += widgets opengl multimedia xml
TARGET = Qtcam
CONFIG += release
# Additional import path used to resolve QML modules in Creator's code model
QML_IMPORT_PATH =
# The .cpp file which was generated for your project. Feel free to hack it.
SOURCES += main.cpp \
logger.cpp \
about.cpp \
cameraproperty.cpp \
videostreaming.cpp \
uvccamera.cpp \
v4l2-api.cpp \
seecam_10cug_m.cpp \
seecam_10cug_bayer.cpp \
seecam_11cug.cpp \
seecam_cu80.cpp \
seecam_cu50.cpp \
seecam_ar0130.cpp \
videoencoder.cpp \
seecam_cu51.cpp \
see3cam_cu130.cpp \
h264decoder.cpp \
ascella.cpp \
wificam.cpp \
gstreamRtsp.cpp
# Installation path
# target.path =
target.path = /usr/
# Please do not modify the following two lines. Required for deployment.
include(qtquick2applicationviewer/qtquick2applicationviewer.pri)
qtcAddDeployment()
HEADERS += \
logger.h \
about.h \
cameraproperty.h \
videostreaming.h \
uvccamera.h \
v4l2-api.h \
seecam_10cug_m.h \
seecam_10cug_bayer.h \
seecam_11cug.h \
seecam_cu80.h \
seecam_cu50.h \
seecam_ar0130.h \
videoencoder.h \
seecam_cu51.h \
see3cam_cu130.h \
h264decoder.h \
ascella.h \
wificam.h \
wificam_enums.h \
gstreamRtsp.h
UNAME_MACHINE_32BIT = $$system(dpkg --print-architecture | grep -o "i386")
UNAME_MACHINE_64BIT = $$system(dpkg --print-architecture | grep -o "amd64")
PRECISEDISTRO = $$system(cat /etc/issue | grep -o "12.04")
TRUSTYDISTRO = $$system(cat /etc/issue | grep -o "14.04")
contains(PRECISEDISTRO, 12.04):{
message("precise")
contains(UNAME_MACHINE_64BIT, amd64):{
message("x86_64 bit - precise")
UBUNTU_12_04_64bit = 1
}
contains(UNAME_MACHINE_32BIT, i386):{
message("32 bit - precise")
UBUNTU_12_04_32bit = 1
}
}
contains(TRUSTYDISTRO, 14.04):{
message("trusty")
contains(UNAME_MACHINE_64BIT, amd64):{
message("x86_64 bit - trusty")
UBUNTU_14_04_64bit = 1
}
contains(UNAME_MACHINE_32BIT, i386):{
message("x86_32 bit - trusty")
UBUNTU_14_04_32bit = 1
}
}
INCLUDEPATH += /usr/include \
$$PWD/v4l2headers/include \
/usr/include/libusb-1.0
LIBS += -lv4l2 -lv4lconvert \
-lavutil \
-lavcodec \
-lavformat \
-lswscale \
-ludev \
-lusb-1.0 \
-lturbojpeg
contains(UBUNTU_14_04_64bit, 1):{
message("ubuntu-14.04, 64bit")
INCLUDEPATH += /usr/include/glib-2.0 \
/usr/lib/x86_64-linux-gnu/glib-2.0/include \
/usr/include/gstreamer-1.0/ \
/usr/include/libxml2
LIBS += -L$$PWD/lib/ewificam -lnetcam64 \
-L/usr/lib/x86_64-linux-gnu/ -lglib-2.0 \
-L/usr/lib/ -lgstreamer-1.0 -lgstapp-1.0 \
-L/usr/lib/ -lgobject-2.0 -lgio-2.0 \
-L$$PWD/lib/wificonnect -lwificonnect64
}
contains(UBUNTU_14_04_32bit, 1):{
message("ubuntu-14.04, 32bit")
INCLUDEPATH += /usr/include/glib-2.0 \
/usr/lib/i386-linux-gnu/glib-2.0/include \
/usr/include/gstreamer-1.0/ \
/usr/include/libxml2
LIBS += -L$$PWD/lib/ewificam -lnetcam32 \
-L/usr/lib/i386-linux-gnu/ -lglib-2.0 \
-L/usr/lib/i386-linux-gnu/ -lgstreamer-1.0 -lgstapp-1.0 \
-L/usr/lib/ -lgobject-2.0 -lgio-2.0 \
-L$$PWD/lib/wificonnect -lwificonnect32
}
contains(UBUNTU_12_04_64bit, 1):{
message("ubuntu-12.04, 64bit")
INCLUDEPATH += /usr/include/libxml2/ \
/usr/include/glib-2.0 \
/usr/lib/x86_64-linux-gnu/glib-2.0/include \
/usr/include/gstreamer-0.10/
LIBS += -L/usr/lib/x86_64-linux-gnu/ -lgstreamer-0.10 -lgstapp-0.10 \
-L$$PWD/lib/ewificam -lnetcam64 \
-L$$PWD/lib/wificonnect -lwificonnect64
}
contains(UBUNTU_12_04_32bit, 1):{
message("ubuntu-12.04, 32bit")
INCLUDEPATH += /usr/include/libxml2/ \
/usr/include/glib-2.0 \
/usr/lib/i386-linux-gnu/glib-2.0/include \
/usr/include/gstreamer-0.10/
LIBS += -L/usr/lib/i386-linux-gnu/ -lgstreamer-0.10 -lgstapp-0.10 \
-L$$PWD/lib/ewificam -lnetcam32 \
-L$$PWD/lib/wificonnect -lwificonnect32
}
QMAKE_CFLAGS_THREAD = -D__STDC_CONSTANT_MACROS #For Ubuntu 12.04 compilation
QMAKE_CXXFLAGS_THREAD = -D__STDC_CONSTANT_MACROS #For Ubuntu 12.04 compilation
OTHER_FILES += \
qml/qtcam/videocapturefilter_QML/videocapturefilter.qml \
qml/qtcam/wificam/Wificam.qml

I have created debian/rules file.
debian/rules
------------------
#!/usr/bin/make -f
# -*- makefile -*-
# Sample debian/rules that uses debhelper.
# This file was originally written by Joey Hess and Craig Small.
# As a special exception, when this file is copied by dh-make into a
# dh-make output file, you may use that output file without restriction.
# This special exception was added by Craig Small in version 0.37 of dh-make.

# Uncomment this to turn on verbose mode.
export DH_VERBOSE=1
export DEB_BUILD_OPTIONS=verbose
APPNAME := qtcam

builddir/Makefile:

 cd src && ls && ls lib && ls lib/ewificam && ls lib/wificonnect && bash /opt/qt52/bin/qt52-env.sh && /opt/qt52/bin/qmake

build: build-stamp

build-stamp: builddir/Makefile
 dh_testdir
 # Add here commands to compile the package.
 cd src && $(MAKE)
 touch $@

clean:
 dh_testdir
 dh_testroot
 rm -f build-stamp
 # Add here commands to clean up after the build process.
 dh_clean
install: build
 dh_testdir
 dh_testroot
 dh_clean -k
 dh_installdirs

 # Add here commands to install the package into debian/your_appname
 cd src && cp -f -R qml/ ${CURDIR}/debian/qtcam/usr/share/qml/ && cp Qtcam_12and14.desktop ${CURDIR}/debian/qtcam/usr/share/applications/ && install -m 755 -p "Qtcam" "${CURDIR}/debian/qtcam/usr/bin/qtcam"
# Build architecture-independent files here.
binary-indep: build install
# We have nothing to do by default.

# Build architecture-dependent files here.
binary-arch: build install
 dh_testdir
 dh_testroot
 dh_installdocs
 dh_installexamples
 dh_installman
 dh_link
 dh_strip
 dh_compress
 dh_fixperms
 dh_installdeb
 dh_shlibdeps
 dh_gencontrol
 dh_md5sums
 dh_builddeb

binary: binary-indep binary-arch
.PHONY: build clean binary-indep binary-arch binary install configure

Here, I am trying to link library which is in current directroy. But it is not able to locate the library.
for ex, -L$$PWD/lib/wificonnect -lwificonnect64
In this , It is throwing error , cannot find -lwificonnect64. How do we solve this? Please any one guide me.

Thanks in advance,
Sankareswari D