message: Add autogen.sh in ARM Cross-compilation
  autogen for the config files was missing.
diff: @@ -278,6 +278,7 @@ To build executables for ARM:
  cd depends
  make HOST=arm-linux-gnueabihf NO_QT=1
  cd ..
  + ./autogen.sh
  ./configure --prefix=$PWD/depends/arm-linux-gnueabihf --enable-glibc-back-compat --enable-reduce-exports LDFLAGS=-static-libstdc++
  make
  