Hi thanks a lot but this documentation has a lot of inconsistencies
I tried to compile but still issues with the make file
dev@ubuntu:~/Desktop/RUT2M_R_GPL_00.07.03.2/rutos-ramips-rut2m-gpl$ make package/helloworld/compile -j1 V=s
make[1]: Entering directory '/home/dev/Desktop/RUT2M_R_GPL_00.07.03.2/rutos-ramips-rut2m-gpl'
make[2]: Entering directory '/home/dev/Desktop/RUT2M_R_GPL_00.07.03.2/rutos-ramips-rut2m-gpl/package/libs/toolchain'
echo "libc" >> /home/dev/Desktop/RUT2M_R_GPL_00.07.03.2/rutos-ramips-rut2m-gpl/staging_dir/target-mipsel_24kc_musl/pkginfo/toolchain.default.install
echo "libgcc" >> /home/dev/Desktop/RUT2M_R_GPL_00.07.03.2/rutos-ramips-rut2m-gpl/staging_dir/target-mipsel_24kc_musl/pkginfo/toolchain.default.install
echo "libpthread" >> /home/dev/Desktop/RUT2M_R_GPL_00.07.03.2/rutos-ramips-rut2m-gpl/staging_dir/target-mipsel_24kc_musl/pkginfo/toolchain.default.install
echo "librt" >> /home/dev/Desktop/RUT2M_R_GPL_00.07.03.2/rutos-ramips-rut2m-gpl/staging_dir/target-mipsel_24kc_musl/pkginfo/toolchain.default.install
make[2]: Leaving directory '/home/dev/Desktop/RUT2M_R_GPL_00.07.03.2/rutos-ramips-rut2m-gpl/package/libs/toolchain'
time: package/libs/toolchain/compile#0.13#0.04#0.18
make[2]: Entering directory '/home/dev/Desktop/RUT2M_R_GPL_00.07.03.2/rutos-ramips-rut2m-gpl/package/helloworld'
Makefile:48: *** missing separator (did you mean TAB instead of 8 spaces?). Stop.
make[2]: Leaving directory '/home/dev/Desktop/RUT2M_R_GPL_00.07.03.2/rutos-ramips-rut2m-gpl/package/helloworld'
time: package/helloworld/compile#0.09#0.02#0.12
ERROR: package/helloworld failed to build.
make[1]: *** [package/Makefile:114: package/helloworld/compile] Error 1
make[1]: Leaving directory '/home/dev/Desktop/RUT2M_R_GPL_00.07.03.2/rutos-ramips-rut2m-gpl'
make: *** [/home/dev/Desktop/RUT2M_R_GPL_00.07.03.2/rutos-ramips-rut2m-gpl/include/toplevel.mk:234: package/helloworld/compile] Error 2
dev@ubuntu:~/Desktop/RUT2M_R_GPL_00.07.03.2/rutos-ramips-rut2m-gpl$ make package/helloworld/compile
make[1] package/helloworld/compile
make[2] -C package/libs/toolchain compile
make[2] -C package/helloworld compile
ERROR: package/helloworld failed to build.
make -r package/helloworld/compile: build failed. Please re-run make with -j1 V=s or V=sc for a higher verbosity level to see what's going on
make: *** [/home/dev/Desktop/RUT2M_R_GPL_00.07.03.2/rutos-ramips-rut2m-gpl/include/toplevel.mk:234: package/helloworld/compile] Error 1