BPI-R4 Ubuntu Image

brucerry · October 9, 2025, 4:44pm

According to the pipeline workflow of Images repo, what are the purposes of adding replacehostapd=1 and replaceiperf=1?

frank-w · October 9, 2025, 5:04pm

It replaces binaries (installing to different location to be used instead of the distribution version) for hostapd and iperf(3) with a most recent version because the versions shipped by ubuntu/debian were too old for wifi7 (missing SAE) and iperf had issues while rss/lro tests.

These binaries are built by my arm-crosscompile repo and downloaded by the image builder scripts.

brucerry · October 10, 2025, 5:32am

What if the sourcefiles_bpi-r4.conf contains both “replaceiperf=1” and "userpackages=“iperf3"”?

I see the build script would install your pre-built iperf binaries first, then it runs “apt install” for iperf3. Would it be your binaries or the distributed version?

frank-w · October 10, 2025, 5:41am

It would install distribution package and then install the selfcompiled binary.

For self compiled iperf i only set a prefix where build puts the output files

github.com

frank-w/arm-crosscompile/blob/main/build_iperf3.sh#L33


      
          
          	apt update
          	apt -y install build-essential git
          	#apt -y install pkg-config libmnl-dev libreadline-dev libpcsclite-dev libnl-route-3-dev libnl-genl-3-dev libnl-3-dev libncurses5-dev bison flex
          	cd /usr/src
          	git clone https://github.com/esnet/iperf.git
          	cd iperf/
          	if [[ -n "$TAG" ]];then
          		git checkout $TAG
          	fi
          	PRFX=$(pwd)/install
          	./configure --enable-static-bin --prefix=$PRFX #--bindir=$PRFX
          	make
          	#make PREFIX=$PRFX SBINDIR=$PRFX/sbin install
          	make install
          
          	cd $PRFX
          	tar -czf ../iperf.tar.gz .
          	tar -tzf ../iperf.tar.gz
          else
            echo "no chroot...exiting..."

And in images repo i extract these to /usr/local

github.com

frank-w/arm-crosscompile/blob/main/build_iperf3.sh#L33


      
          
          	apt update
          	apt -y install build-essential git
          	#apt -y install pkg-config libmnl-dev libreadline-dev libpcsclite-dev libnl-route-3-dev libnl-genl-3-dev libnl-3-dev libncurses5-dev bison flex
          	cd /usr/src
          	git clone https://github.com/esnet/iperf.git
          	cd iperf/
          	if [[ -n "$TAG" ]];then
          		git checkout $TAG
          	fi
          	PRFX=$(pwd)/install
          	./configure --enable-static-bin --prefix=$PRFX #--bindir=$PRFX
          	make
          	#make PREFIX=$PRFX SBINDIR=$PRFX/sbin install
          	make install
          
          	cd $PRFX
          	tar -czf ../iperf.tar.gz .
          	tar -tzf ../iperf.tar.gz
          else
            echo "no chroot...exiting..."

Normally /usr/local/bin is used before/usr/bin. You can delete the files in /usr/local/bin and then iperf3 command uses the distribution version.

You can check this with “which” command. Preferred command is defined by PATH env variable.