build_helper: add flag to allow compiling software without hardware

Add --disable-hardware-dependency flag to avoid hardware need when compiling OAI.
For the momment it avoids to flash bladeRF hardware

cmake_targets/build_oai

@@ -278,6 +278,10 @@ function main() {
             T_TRACER="True"
             echo_info "Enabling the T tracer"
             shift 1;;
+       --disable-hardware-dependency)
+            echo_info "Disabling hardware dependency for compiling software"
+            DISABLE_HARDWARE_DEPENDENCY="True"
+            shift 1;;
         -h | --help)
             print_help
             exit 1;;
@@ -387,10 +391,16 @@ function main() {
     if [ "$HW" == "OAI_USRP" ] ; then
       echo_info "installing packages for USRP support"
       check_install_usrp_uhd_driver
+      if [ ! "$DISABLE_HARDWARE_DEPENDENCY" == "True" ]; then
+        install_usrp_uhd_driver
+      fi
     fi 
     if [ "$HW" == "OAI_BLADERF" ] ; then
       echo_info "installing packages for BLADERF support"
       check_install_bladerf_driver
+      if [ ! "$DISABLE_HARDWARE_DEPENDENCY" == "True" ]; then
+        flash_firmware_bladerf
+      fi
     fi
   fi
 

cmake_targets/tools/build_helper

@@ -229,7 +229,10 @@ check_install_bladerf_driver(){
 	$SUDO apt-get install -y bladerf libbladerf-dev
 	$SUDO apt-get install -y bladerf-firmware-fx3
 	$SUDO apt-get install -y bladerf-fpga-hostedx40	
-	$SUDO bladeRF-cli --flash-firmware /usr/share/Nuand/bladeRF/bladeRF_fw.img	
+}
+
+flash_firmware_bladerf() {
+	$SUDO bladeRF-cli --flash-firmware /usr/share/Nuand/bladeRF/bladeRF_fw.img
 }
 
 check_install_additional_tools (){