Reduce changes needed for cross-compile build

Signed-off-by: Saikrishna Arcot <sarcot@microsoft.com>

Author: saiarcot895

CLI/klish/Makefile

@@ -3,23 +3,18 @@ SHELL = /bin/bash
 .SHELLFLAGS += -e
 
 KLISH_VERSION = 2.1.4
-PYTHONVER=3.7
 
 KLISH_SRC = $(SONIC_CLI_ROOT)/klish-$(KLISH_VERSION)
 
-ifeq ($(CROSS_BUILD_ENVIRON),y)
-	CROSS_CONFIGURE_OPTS = --host=$(CROSS_HOST_TYPE)
-	LIB_PATH = $(CROSS_PKGS_LIB_PATH)
-else
-	LIB_PATH = /usr/lib/x86_64-linux-gnu
-endif
-
 SRC_REPLACEMENTS:=$(shell find patches -type f)
 all : $(SRC_REPLACEMENTS)
 	tar xzvf klish-$(KLISH_VERSION).tgz -C $(SONIC_CLI_ROOT)
 	cd ${KLISH_SRC} && QUILT_PATCHES=${CURDIR}/patches quilt push -a
 
-	cd ${KLISH_SRC} && sh autogen.sh && ./configure --with-libxml2=/usr $(CROSS_CONFIGURE_OPTS) --enable-debug=no && make
+ifeq ($(CROSS_BUILD_ENVIRON),y)
+	export PATH=/python_virtualenv/env3/bin/:${PATH}
+endif
+	cd ${KLISH_SRC} && sh autogen.sh && ./configure --with-libxml2 --host=$(DEB_HOST_GNU_TYPE) --enable-debug=no CJSON_CFLAGS=-I/usr/include/cjson CJSON_LIBS=-lcjson && make
 
 	mkdir -p $(SONIC_CLI_ROOT)/target/.libs
 	cp $(CURDIR)/clish_start $(SONIC_CLI_ROOT)/target/.