Changes for armhf cross compilation build (instead of using qemu) tha…

…t reduced building time to about 6 hours

Makefile.work

@@ -120,10 +120,16 @@ ifeq ($(CONFIGURED_ARCH), $(COMPILE_HOST_ARCH))
 SLAVE_BASE_IMAGE = $(SLAVE_DIR)
 MULTIARCH_QEMU_ENVIRON = n
 else ifneq ($(CONFIGURED_ARCH),)
+ifneq ($(CROSS_BLDENV),)
+SLAVE_BASE_IMAGE = $(SLAVE_DIR)-march-$(CONFIGURED_ARCH)
+MULTIARCH_QEMU_ENVIRON = n
+CROSS_BUILD_ENVIRON = y
+else
 SLAVE_BASE_IMAGE = $(SLAVE_DIR)-march-$(CONFIGURED_ARCH)
 MULTIARCH_QEMU_ENVIRON = y
 endif
 endif
+endif
 SLAVE_IMAGE = $(SLAVE_BASE_IMAGE)-$(USER_LC)
 
 # Generate the version control build info
@@ -132,8 +138,8 @@ $(shell SONIC_VERSION_CONTROL_COMPONENTS=$(SONIC_VERSION_CONTROL_COMPONENTS) \
     scripts/generate_buildinfo_config.sh)
 
 # Generate the slave Dockerfile, and prepare build info for it
-$(shell CONFIGURED_ARCH=$(CONFIGURED_ARCH) MULTIARCH_QEMU_ENVIRON=$(MULTIARCH_QEMU_ENVIRON) DOCKER_EXTRA_OPTS=$(DOCKER_EXTRA_OPTS) j2 $(SLAVE_DIR)/Dockerfile.j2 > $(SLAVE_DIR)/Dockerfile)
-$(shell CONFIGURED_ARCH=$(CONFIGURED_ARCH) MULTIARCH_QEMU_ENVIRON=$(MULTIARCH_QEMU_ENVIRON) j2 $(SLAVE_DIR)/Dockerfile.user.j2 > $(SLAVE_DIR)/Dockerfile.user)
+$(shell CONFIGURED_ARCH=$(CONFIGURED_ARCH) MULTIARCH_QEMU_ENVIRON=$(MULTIARCH_QEMU_ENVIRON) CROSS_BUILD_ENVIRON=$(CROSS_BUILD_ENVIRON) DOCKER_EXTRA_OPTS=$(DOCKER_EXTRA_OPTS) j2 $(SLAVE_DIR)/Dockerfile.j2 > $(SLAVE_DIR)/Dockerfile)
+$(shell CONFIGURED_ARCH=$(CONFIGURED_ARCH) MULTIARCH_QEMU_ENVIRON=$(MULTIARCH_QEMU_ENVIRON) CROSS_BUILD_ENVIRON=$(CROSS_BUILD_ENVIRON) j2 $(SLAVE_DIR)/Dockerfile.user.j2 > $(SLAVE_DIR)/Dockerfile.user)
 $(shell BUILD_SLAVE=y scripts/prepare_docker_buildinfo.sh $(SLAVE_BASE_IMAGE) $(SLAVE_DIR)/Dockerfile $(CONFIGURED_ARCH) "" $(BLDENV))
 
 # Add the versions in the tag, if the version change, need to rebuild the slave
@@ -181,7 +187,7 @@ ifeq ($(SONIC_CONFIG_USE_NATIVE_DOCKERD_FOR_BUILD), y)
     DOCKER_RUN += -v /var/run/docker.sock:/var/run/docker.sock
 endif
 
-ifeq ($(MULTIARCH_QEMU_ENVIRON), y)
+ifneq ($(filter y, $(MULTIARCH_QEMU_ENVIRON) $(CROSS_BUILD_ENVIRON)),)
 ifeq ($(DOCKER_DATA_ROOT_FOR_MULTIARCH),)
 	DOCKER_DATA_ROOT_FOR_MULTIARCH := /var/lib/march/docker
 endif
@@ -242,6 +248,7 @@ SONIC_BUILD_INSTRUCTION :=  make \
                            PLATFORM=$(PLATFORM) \
                            PLATFORM_ARCH=$(PLATFORM_ARCH) \
                            MULTIARCH_QEMU_ENVIRON=$(MULTIARCH_QEMU_ENVIRON)  \
+                           CROSS_BUILD_ENVIRON=$(CROSS_BUILD_ENVIRON) \
                            BUILD_NUMBER=$(BUILD_NUMBER) \
                            BUILD_TIMESTAMP=$(BUILD_TIMESTAMP) \
                            SONIC_IMAGE_VERSION=$(SONIC_IMAGE_VERSION) \

build_debian.sh

@@ -113,6 +113,10 @@ sudo LANG=C chroot $FILESYSTEM_ROOT apt-get -y upgrade
 echo '[INFO] Install packages for building image'
 sudo LANG=C chroot $FILESYSTEM_ROOT apt-get -y install makedev psmisc
 
+if [[ $CROSS_BUILD_ENVIRON == y ]]; then
+sudo LANG=C chroot $FILESYSTEM_ROOT dpkg --add-architecture $CONFIGURED_ARCH
+fi
+
 ## Create device files
 echo '[INFO] MAKEDEV'
 if [[ $CONFIGURED_ARCH == armhf || $CONFIGURED_ARCH == arm64 ]]; then

dockers/docker-base-buster/Dockerfile.j2

@@ -1,7 +1,7 @@
 {% from "dockers/dockerfile-macros.j2" import install_debian_packages, install_python_wheels, copy_files %}
-{% if CONFIGURED_ARCH == "armhf" and MULTIARCH_QEMU_ENVIRON == "y" %}
+{% if CONFIGURED_ARCH == "armhf" and (MULTIARCH_QEMU_ENVIRON == "y" or CROSS_BUILD_ENVIRON == "y") %}
 FROM multiarch/debian-debootstrap:armhf-buster
-{% elif CONFIGURED_ARCH == "arm64" and MULTIARCH_QEMU_ENVIRON == "y" %}
+{% elif CONFIGURED_ARCH == "arm64" and (MULTIARCH_QEMU_ENVIRON == "y" or CROSS_BUILD_ENVIRON == "y") %}
 FROM multiarch/debian-debootstrap:arm64-buster
 {% else %}
 FROM debian:buster

dockers/docker-config-engine-buster/Dockerfile.j2

@@ -16,6 +16,14 @@ RUN apt-get install -y        \
         libz-dev
 {%- endif %}
 
+{%- if CROSS_BUILD_ENVIRON == "y" %}
+RUN mkdir prebuilt-python-wheels
+COPY prebuilt-python-wheels/* prebuilt-python-wheels/
+RUN pip3 install prebuilt-python-wheels/lxml*cp37*.whl
+RUN pip3 install prebuilt-python-wheels/bitarray*cp37*.whl
+RUN rm -rf prebuilt-python-wheels
+{%- endif %}
+
 # For sonic-config-engine Python 3 package
 # Explicitly install pyangbind here, as pyangbind causes enum34 to be installed.
 # enum34 causes Python 're' package to not work properly as it redefines an incompatible enum.py module

dockers/docker-platform-monitor/Dockerfile.j2

@@ -32,6 +32,14 @@ RUN pip2 install --upgrade 'pip<21'
 RUN apt-get purge -y python-pip
 RUN pip2 install 'setuptools==40.8.0'
 
+{%- if CROSS_BUILD_ENVIRON == "y" %}
+RUN mkdir prebuilt-python-wheels
+COPY prebuilt-python-wheels/* prebuilt-python-wheels/
+RUN pip2 install prebuilt-python-wheels/lxml*cp27*.whl
+RUN pip3 install prebuilt-python-wheels/lxml*cp37*.whl
+RUN rm -rf prebuilt-python-wheels
+{%- endif %}
+
 # On Arista devices, the sonic_platform wheel is not installed in the container.
 # Instead, the installation directory is mounted from the host OS. However, this method
 # doesn't ensure all dependencies are installed in the container. So here we

dockers/docker-sonic-mgmt-framework/Dockerfile.j2

@@ -9,6 +9,13 @@ ENV DEBIAN_FRONTEND=noninteractive
 RUN apt-get update && \
     apt-get install -y g++ python3-dev libxml2 libcurl3-gnutls libcjson-dev
 
+{%- if CROSS_BUILD_ENVIRON == "y" %}
+RUN mkdir prebuilt-python-wheels
+COPY prebuilt-python-wheels/* prebuilt-python-wheels/
+RUN pip3 install prebuilt-python-wheels/grpcio*cp37*.whl
+RUN rm -rf prebuilt-python-wheels
+{%- endif %}
+
 RUN pip3 install connexion==2.7.0 \
                  setuptools==21.0.0 \
                  grpcio-tools==1.20.0 \

files/build_templates/sonic_debian_extension.j2

@@ -67,7 +67,7 @@ sudo bash -c "echo \"DOCKER_OPTS=\"--storage-driver=overlay2\"\" >> $FILESYSTEM_
 # Copy docker start script to be able to start docker in chroot
 sudo mkdir -p "$FILESYSTEM_ROOT/$DOCKER_CTL_DIR"
 sudo cp $DOCKER_SCRIPTS_DIR/docker "$FILESYSTEM_ROOT/$DOCKER_CTL_SCRIPT"
-if [ $MULTIARCH_QEMU_ENVIRON == y ]; then
+if [[ $MULTIARCH_QEMU_ENVIRON == y || $CROSS_BUILD_ENVIRON == y ]]; then
     SONIC_NATIVE_DOCKERD_FOR_DOCKERFS=" -H unix:///dockerfs/var/run/docker.sock "
     SONIC_NATIVE_DOCKERD_FOR_DOCKERFS_PID="cat `pwd`/dockerfs/var/run/docker.pid"
 else
@@ -614,7 +614,7 @@ EOF
 {% endif %}
 
 ## Bind docker path
-if [ $MULTIARCH_QEMU_ENVIRON == y ]; then
+if [[ $MULTIARCH_QEMU_ENVIRON == y || $CROSS_BUILD_ENVIRON == y ]]; then
     sudo mkdir -p $FILESYSTEM_ROOT/dockerfs
     sudo mount --bind dockerfs $FILESYSTEM_ROOT/dockerfs
 fi
@@ -666,7 +666,7 @@ echo "docker images pull complete"
 
 sudo umount $FILESYSTEM_ROOT/target
 sudo rm -r $FILESYSTEM_ROOT/target
-if [ $MULTIARCH_QEMU_ENVIRON == y ]; then
+if [[ $MULTIARCH_QEMU_ENVIRON == y || $CROSS_BUILD_ENVIRON == y ]]; then
     sudo umount $FILESYSTEM_ROOT/dockerfs
     sudo rm -fr $FILESYSTEM_ROOT/dockerfs
     sudo kill -9 `sudo $SONIC_NATIVE_DOCKERD_FOR_DOCKERFS_PID` || true

platform/marvell-armhf/prestera/debian/rules

@@ -3,7 +3,11 @@
 include /usr/share/dpkg/pkg-info.mk
 
 PACKAGE_PRE_NAME := mrvlprestera
+ifeq ($(CROSS_BUILD_ENVIRON), y)
+KVERSION    ?= 4.19.0-12-2-armmp
+else
 KVERSION   ?= $(shell uname -r)
+endif
 KERNEL_SRC :=  /lib/modules/$(KVERSION)
 MOD_SRC_DIR:= $(shell pwd)
 MODULE_DIR := mrvl-prestera/cpssEnabler/linuxNoKernelModule/drivers

scripts/build_debian_base_system.sh

@@ -20,7 +20,7 @@ generate_version_file()
 
 if [ "$ENABLE_VERSION_CONTROL_DEB" != "y" ]; then
     if [[ $CONFIGURED_ARCH == armhf || $CONFIGURED_ARCH == arm64 ]]; then
-        if [ $MULTIARCH_QEMU_ENVIRON == y ]; then
+        if [[ $MULTIARCH_QEMU_ENVIRON == y || $CROSS_BUILD_ENVIRON == y ]]; then
             # qemu arm bin executable for cross-building
             sudo mkdir -p $FILESYSTEM_ROOT/usr/bin
             sudo cp /usr/bin/qemu*static $FILESYSTEM_ROOT/usr/bin || true

scripts/prepare_docker_buildinfo.sh

@@ -11,10 +11,20 @@ DISTRO=$5
 DOCKERFILE_PATH=$(dirname "$DOCKERFILE_TARGE")
 BUILDINFO_PATH="${DOCKERFILE_PATH}/buildinfo"
 BUILDINFO_VERSION_PATH="${BUILDINFO_PATH}/versions"
+if [[ $CROSS_BUILD_ENVIRON == y ]]; then
+PREBUILT_PYTHON_WHEELS_PATH="${DOCKERFILE_PATH}/prebuilt-python-wheels"
+fi
 
 [ -d $BUILDINFO_PATH ] && rm -rf $BUILDINFO_PATH
 mkdir -p $BUILDINFO_VERSION_PATH
 
+if [[ $CROSS_BUILD_ENVIRON == y ]]; then
+# Copy pre-compiled (cross-compiled) python wheels used in dockers
+[ -d $PREBUILT_PYTHON_WHEELS_PATH ] && rm -rf $PREBUILT_PYTHON_WHEELS_PATH
+mkdir -p $PREBUILT_PYTHON_WHEELS_PATH
+cp -rf /TARGET/* $PREBUILT_PYTHON_WHEELS_PATH
+fi
+
 # Get the debian distribution from the docker base image
 if [ -z "$DISTRO" ]; then
     DOCKER_BASE_IMAGE=$(grep "^FROM" $DOCKERFILE | head -n 1 | awk '{print $2}')

slave.mk

@@ -62,6 +62,7 @@ export PYTHON_WHEELS_PATH
 export IMAGE_DISTRO
 export IMAGE_DISTRO_DEBS_PATH
 export MULTIARCH_QEMU_ENVIRON
+export CROSS_BUILD_ENVIRON
 
 ###############################################################################
 ## Utility rules
@@ -201,6 +202,36 @@ endif
 MAKEFLAGS += -j $(SONIC_BUILD_JOBS)
 export SONIC_CONFIG_MAKE_JOBS
 
+ifeq ($(CROSS_BUILD_ENVIRON),y)
+DEB_BUILD_OPTIONS_GENERIC += nocheck
+export $(dpkg-architecture -a$(CONFIGURED_ARCH))
+ANT_DEB_CROSS_OPT := -a$(CONFIGURED_ARCH) -Pcross,nocheck 
+ANT_DEB_CONFIG := CONFIG_SITE=/etc/dpkg-cross/cross-config.$(CONFIGURED_ARCH)
+
+VIRTENV_BASE_CROSS_PYTHON2 = /python_virtualenv/env2/
+VIRTENV_BASE_CROSS_PYTHON3 = /python_virtualenv/env3/
+VIRTENV_BIN_CROSS_PYTHON2 = $(VIRTENV_BASE_CROSS_PYTHON2)/bin/
+VIRTENV_BIN_CROSS_PYTHON3 = $(VIRTENV_BASE_CROSS_PYTHON3)/bin/
+
+ifeq ($(CONFIGURED_ARCH),armhf)
+CROSS_HOST_TYPE = arm-linux-gnueabihf
+GOARCH=arm
+else ifeq ($(CONFIGURED_ARCH),arm64)
+CROSS_HOST_TYPE = aarch64-linux-gnueabi
+GOARCH=arm64
+endif
+
+CROSS_COMPILE = $(CROSS_HOST_TYPE)-
+CROSS_CC = $(CROSS_COMPILE)gcc
+CROSS_CXX = $(CROSS_COMPILE)g++
+CROSS_AR = $(CROSS_COMPILE)ar
+CROSS_LIB_PATH = /usr/$(CROSS_HOST_TYPE)/lib/
+CROSS_BIN_PATH = /usr/$(CROSS_HOST_TYPE)/bin/
+CROSS_PKGS_LIB_PATH = /usr/lib/$(CROSS_HOST_TYPE)
+
+CROSS_COMPILE_FLAGS := CGO_ENABLED=1 GOOS=linux GOARCH=$(GOARCH) CROSS_COMPILE=$(CROSS_COMPILE) OVERRIDE_HOST_TYPE=$(CROSS_HOST_TYPE) CROSS_CC=$(CROSS_CC) CROSS_CXX=$(CROSS_CXX) CROSS_LIB_PATH=$(CROSS_LIB_PATH) CROSS_BIN_PATH=$(CROSS_BIN_PATH) CROSS_HOST_TYPE=$(CROSS_HOST_TYPE) CROSS_PKGS_LIB_PATH=$(CROSS_PKGS_LIB_PATH)
+endif
+
 ###############################################################################
 ## Routing stack related exports
 ###############################################################################
@@ -261,6 +292,7 @@ $(info "INCLUDE_MACSEC"                  : "$(INCLUDE_MACSEC)")
 $(info "TELEMETRY_WRITABLE"              : "$(TELEMETRY_WRITABLE)")
 $(info "PDDF_SUPPORT"                    : "$(PDDF_SUPPORT)")
 $(info "MULTIARCH_QEMU_ENVIRON"          : "$(MULTIARCH_QEMU_ENVIRON)")
+$(info "CROSS_BUILD_ENVIRON"             : "$(CROSS_BUILD_ENVIRON)")
 $(info )
 else
 $(info SONiC Build System for $(CONFIGURED_PLATFORM):$(CONFIGURED_ARCH))
@@ -429,7 +461,7 @@ $(addprefix $(DEBS_PATH)/, $(SONIC_MAKE_DEBS)) : $(DEBS_PATH)/% : .platform $$(a
 		if [ -f $($*_SRC_PATH).patch/series ]; then pushd $($*_SRC_PATH) && QUILT_PATCHES=../$(notdir $($*_SRC_PATH)).patch quilt push -a; popd; fi
 		# Build project and take package
 		$(SETUP_OVERLAYFS_FOR_DPKG_ADMINDIR)
-		DEB_BUILD_OPTIONS="${DEB_BUILD_OPTIONS_GENERIC}" make -j$(SONIC_CONFIG_MAKE_JOBS) DEST=$(shell pwd)/$(DEBS_PATH) -C $($*_SRC_PATH) $(shell pwd)/$(DEBS_PATH)/$* $(LOG)
+		DEB_BUILD_OPTIONS="${DEB_BUILD_OPTIONS_GENERIC}" $(CROSS_COMPILE_FLAGS) make -j$(SONIC_CONFIG_MAKE_JOBS) DEST=$(shell pwd)/$(DEBS_PATH) -C $($*_SRC_PATH) $(shell pwd)/$(DEBS_PATH)/$* $(LOG)
 		# Clean up
 		if [ -f $($*_SRC_PATH).patch/series ]; then pushd $($*_SRC_PATH) && quilt pop -a -f; [ -d .pc ] && rm -rf .pc; popd; fi
 
@@ -471,9 +503,16 @@ $(addprefix $(DEBS_PATH)/, $(SONIC_DPKG_DEBS)) : $(DEBS_PATH)/% : .platform $$(a
 		if [ -f ./autogen.sh ]; then ./autogen.sh $(LOG); fi
 		$(SETUP_OVERLAYFS_FOR_DPKG_ADMINDIR)
 		$(if $($*_DPKG_TARGET),
+ifneq ($(CROSS_BUILD_ENVIRON),y)
 			${$*_BUILD_ENV} DEB_BUILD_OPTIONS="${DEB_BUILD_OPTIONS_GENERIC} ${$*_DEB_BUILD_OPTIONS}" dpkg-buildpackage -rfakeroot -b -us -uc -j$(SONIC_CONFIG_MAKE_JOBS) --as-root -T$($*_DPKG_TARGET) --admindir $$mergedir $(LOG),
 			${$*_BUILD_ENV} DEB_BUILD_OPTIONS="${DEB_BUILD_OPTIONS_GENERIC} ${$*_DEB_BUILD_OPTIONS}" dpkg-buildpackage -rfakeroot -b -us -uc -j$(SONIC_CONFIG_MAKE_JOBS) --admindir $$mergedir $(LOG)
 		)
+else
+			export $(dpkg-architecture -a$(CONFIGURED_ARCH)) && \
+			${$*_BUILD_ENV} DEB_BUILD_OPTIONS="${DEB_BUILD_OPTIONS_GENERIC} ${$*_DEB_BUILD_OPTIONS}" $(ANT_DEB_CONFIG) $(CROSS_COMPILE_FLAGS) dpkg-buildpackage -rfakeroot -b $(ANT_DEB_CROSS_OPT) -us -uc -j$(SONIC_CONFIG_MAKE_JOBS) --as-root -T$($*_DPKG_TARGET) --admindir $$mergedir $(LOG),
+			export $(dpkg-architecture -a$(CONFIGURED_ARCH)) && \
+			${$*_BUILD_ENV} DEB_BUILD_OPTIONS="${DEB_BUILD_OPTIONS_GENERIC} ${$*_DEB_BUILD_OPTIONS}" $(ANT_DEB_CONFIG) $(CROSS_COMPILE_FLAGS) dpkg-buildpackage -rfakeroot -b $(ANT_DEB_CROSS_OPT) -us -uc -j$(SONIC_CONFIG_MAKE_JOBS) --admindir $$mergedir $(LOG))
+endif
 		popd $(LOG_SIMPLE)
 		# Clean up
 		if [ -f $($*_SRC_PATH).patch/series ]; then pushd $($*_SRC_PATH) && quilt pop -a -f; [ -d .pc ] && rm -rf .pc; popd; fi
@@ -539,7 +578,12 @@ $(SONIC_INSTALL_DEBS) : $(DEBS_PATH)/%-install : .platform $$(addsuffix -install
 			{ while dpkg -s $(firstword $(subst _, ,$(basename $(deb)))) | grep "^Version: $(word 2, $(subst _, ,$(basename $(deb))))" &> /dev/null; do echo "waiting for $(deb) to be uninstalled" $(LOG); sleep 1; done } )
 		# put a lock here because dpkg does not allow installing packages in parallel
 		if mkdir $(DEBS_PATH)/dpkg_lock &> /dev/null; then
+ifneq ($(CROSS_BUILD_ENVIRON),y)
 			{ sudo DEBIAN_FRONTEND=noninteractive dpkg -i $(DEBS_PATH)/$* $(LOG) && rm -d $(DEBS_PATH)/dpkg_lock && break; } || { rm -d $(DEBS_PATH)/dpkg_lock && exit 1 ; }
+else
+			# Relocate debian packages python libraries to the cross python virtual env location
+			{ sudo DEBIAN_FRONTEND=noninteractive dpkg -i $(if $(findstring $(LINUX_HEADERS),$*),--force-depends) $(DEBS_PATH)/$* $(LOG) && rm -rf tmp && mkdir tmp && dpkg -x $(DEBS_PATH)/$* tmp && (sudo cp -rf tmp/usr/lib/python2.7/dist-packages/* /python_virtualenv/env2/lib/python2.7/site-packages/ 2>/dev/null || true) && (sudo cp -rf tmp/usr/lib/python3/dist-packages/* /python_virtualenv/env3/lib/python3.7/site-packages/ 2>/dev/null || true) && rm -d $(DEBS_PATH)/dpkg_lock && break; } || { rm -d $(DEBS_PATH)/dpkg_lock && exit 1 ; }
+endif
 		fi
 	done
 	$(FOOTER)
@@ -611,7 +655,12 @@ $(addprefix $(PYTHON_WHEELS_PATH)/, $(SONIC_PYTHON_WHEELS)) : $(PYTHON_WHEELS_PA
 		pushd $($*_SRC_PATH) $(LOG_SIMPLE)
 		# apply series of patches if exist
 		if [ -f ../$(notdir $($*_SRC_PATH)).patch/series ]; then QUILT_PATCHES=../$(notdir $($*_SRC_PATH)).patch quilt push -a; fi
-		if [ ! "$($*_TEST)" = "n" ]; then python$($*_PYTHON_VERSION) setup.py test $(LOG); fi
+		if [ ! "$($*_TEST)" = "n" ]; then
+ifneq ($(CROSS_BUILD_ENVIRON),y)
+		  python$($*_PYTHON_VERSION) setup.py test $(LOG); fi
+else
+		  PATH=$(VIRTENV_BIN_CROSS_PYTHON$($*_PYTHON_VERSION)):${PATH} python$($*_PYTHON_VERSION) setup.py test $(LOG); fi
+endif
 		python$($*_PYTHON_VERSION) setup.py bdist_wheel $(LOG)
 		# clean up
 		if [ -f ../$(notdir $($*_SRC_PATH)).patch/series ]; then quilt pop -a -f; [ -d .pc ] && rm -rf .pc; fi
@@ -638,7 +687,12 @@ $(SONIC_INSTALL_WHEELS) : $(PYTHON_WHEELS_PATH)/%-install : .platform $$(addsuff
 	# put a lock here to avoid race conditions
 	while true; do
 	if mkdir $(PYTHON_WHEELS_PATH)/pip_lock &> /dev/null; then
+ifneq ($(CROSS_BUILD_ENVIRON),y)
 	{ sudo -E pip$($*_PYTHON_VERSION) install $(PYTHON_WHEELS_PATH)/$* $(LOG) && rm -d $(PYTHON_WHEELS_PATH)/pip_lock && break; } || { rm -d $(PYTHON_WHEELS_PATH)/pip_lock && exit 1 ; }
+else
+	# Link python script and data expected location to the cross python virtual env istallation locations
+	{ PATH=$(VIRTENV_BIN_CROSS_PYTHON$($*_PYTHON_VERSION)):${PATH} sudo -E $(VIRTENV_BIN_CROSS_PYTHON$($*_PYTHON_VERSION))/pip$($*_PYTHON_VERSION) install --no-deps $(PYTHON_WHEELS_PATH)/$* $(LOG) && $(if $(findstring $(SONIC_CONFIG_ENGINE_PY3),$*),(sudo ln -s $(VIRTENV_BIN_CROSS_PYTHON$($*_PYTHON_VERSION))/sonic-cfggen /usr/local/bin/sonic-cfggen 2>/dev/null || true), true ) && $(if $(findstring $(SONIC_YANG_MODELS_PY3),$*),(sudo ln -s $(VIRTENV_BASE_CROSS_PYTHON3)/yang-models /usr/local/yang-models 2>/dev/null || true), true ) && rm -d $(PYTHON_WHEELS_PATH)/pip_lock && break; } || { rm -d $(PYTHON_WHEELS_PATH)/pip_lock && exit 1 ; }
+endif
 	fi
 	done
 	$(FOOTER)
@@ -1037,7 +1091,7 @@ $(addprefix $(TARGET_PATH)/, $(SONIC_INSTALLERS)) : $(TARGET_PATH)/% : \
 	SONIC_ENFORCE_VERSIONS=$(SONIC_ENFORCE_VERSIONS) \
 	TRUSTED_GPG_URLS=$(TRUSTED_GPG_URLS) \
 	PACKAGE_URL_PREFIX=$(PACKAGE_URL_PREFIX) \
-	MULTIARCH_QEMU_ENVIRON=$(MULTIARCH_QEMU_ENVIRON) \
+	MULTIARCH_QEMU_ENVIRON=$(MULTIARCH_QEMU_ENVIRON) CROSS_BUILD_ENVIRON=$(CROSS_BUILD_ENVIRON) \
 		./build_debian.sh $(LOG)
 
 	USERNAME="$(USERNAME)" \