Cross Compiling KubeEdge

In most of the cases, when you are trying to compile KubeEdge edgecore on Raspberry Pi or any other device, you may run out of memory, in that case, it is advisable to cross-compile the Edgecore binary and transfer it to your edge device.

For ARM Architecture from x86 Architecture

Clone KubeEdge

  1. # Build and run KubeEdge on an ARMv6 target device.
  3. git clone https://github.com/kubeedge/kubeedge.git $GOPATH/src/github.com/kubeedge/kubeedge
  4. cd $GOPATH/src/github.com/kubeedge/kubeedge/edge
  5. sudo apt-get install gcc-arm-linux-gnueabi
  6. export GOARCH=arm
  7. export GOOS="linux"
  8. export GOARM=6 #Pls give the appropriate arm version of your device 
  9. export CGO_ENABLED=1
  10. export CC=arm-linux-gnueabi-gcc
  11. make edgecore

If you are compiling KubeEdge edgecore for Raspberry Pi and check the Makefile for the edge.

In that CC has been defined as

  1. export CC=arm-linux-gnueabi-gcc;

However, it always good to check what’s your gcc on Raspberry Pi says by

  1. gcc -v
  3. Using built-in specs.
  4. COLLECT_GCC=gcc
  5. COLLECT_LTO_WRAPPER=/usr/lib/gcc/arm-linux-gnueabihf/6/lto-wrapper
  6. Target: arm-linux-gnueabihf
  7. Configured with: ../src/configure -v --with-pkgversion='Raspbian 6.3.0-18+rpi1+deb9u1' --with-bugurl=file:///usr/share/doc/gcc-6/README.Bugs --enable-languages=c,ada,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-6 --program-prefix=arm-linux-gnueabihf- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-libitm --disable-libquadmath --enable-plugin --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-6-armhf/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-6-armhf --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-6-armhf --with-arch-directory=arm --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --with-target-system-zlib --enable-objc-gc=auto --enable-multiarch --disable-sjlj-exceptions --with-arch=armv6 --with-fpu=vfp --with-float=hard --enable-checking=release --build=arm-linux-gnueabihf --host=arm-linux-gnueabihf --target=arm-linux-gnueabihf
  8. Thread model: posix
  9. gcc version 6.3.0 20170516 (Raspbian 6.3.0-18+rpi1+deb9u1)

If you see, Target has been defined as

  1. Target: arm-linux-gnueabihf

in that case, export CC as

  1. arm-linux-gnueabihf-gcc rather than arm-linux-gnueabi-gcc

Also, based on the above result, you may have to install

  1. gcc-arm-linux-gnueabi - GNU C cross-compiler for architecture armel
  3. or
  5. gcc-arm-linux-gnueabihf - GNU C cross-compiler for architecture armhf