4652c3caaf
There was an OpenWrt toolchain file however it's a bit outdated and we did not have any guide on how to build for this target at all. JerryScript-DCO-1.0-Signed-off-by: Peter Gal pgal.u-szeged@partner.samsung.com
JerryScript for OpenWrt build guide
This document describes the steps required to compile the JerryScript for OpenWrt. For target device the TP-Link WR1043ND v1.x router is used. Please be advised, that if you have a different one minor modifications to this document could be required.
IMPORTANT!
As the TP-Link WR1043ND is a mips based device and mips is a big-endian architecture a JerryScipt snapshot which was built on an little-endian system will not work correctly. Thus it is advised that the snapshot functionally should be used with caution, that is DO NOT run snapshots generated on little-endian system(s) on a big-endian system.
OpenWrt notes
In 2018 ~January the OpenWrt and LEDE project merged into one and thus the old OpenWrt parts are now usable only from an archived repository: https://github.com/openwrt/archive
OpenWrt toolchain setup
To build the JerryScript for OpenWrt a toolchain is required for the target router/device. The toolchain setup in this document was tested on an Ubuntu 16.04.3 LTS Linux.
Steps required for toolchain creation:
0. Install OpenWrt build requirements
$ sudo apt-get install git-core build-essential libssl-dev libncurses5-dev unzip gawk zlib1g-dev subversion mercurial
1. Clone OpenWrt (Chaos Calmer version)
$ git clone https://github.com/openwrt/archive openwrt -b chaos_calmer
$ cd openwrt
2. Run Menuconfig and configure the OpenWrt
$ make menuconfig
Options which should be set:
- Set "Target System" to "Atheros AR7xxx/AR9xxx".
- Set "Target Profile" to "TP-LINK TL-WR1043N/ND".
Save the configuration (as .config) and exit from the menuconfig.
3. Configure the environment variables
$ export BUILDROOT=$(pwd) # where the openwrt root dir is
$ export STAGING_DIR=${BUILDROOT}/staging_dir/ # required by the compiler
$ export PATH=$PATH:${STAGING_DIR}/host/bin:${STAGING_DIR}/toolchain-mips_34kc_gcc-4.8-linaro_uClibc-0.9.33.2/bin/
The name toolchain-mips_34kc_gcc-4.8-linaro_uClibc-0.9.33.2 is created based on the menuconfig.
This changes depending on the target device!
4. Build the OpenWrt
$ make
5. Check if the compiler was built
$ mips-openwrt-linux-gcc --version # running this should print out the version information
At this point we have the required compiler for OpenWrt.
Build JerryScript for OpenWrt
0. Check environment
Please check if the STAGING_DIR is configured correctly and that the toolchain binary is on the PATH.
1. Run the build with the OpenWrt toolchain file
$ ./tools/build.py --toolchain cmake/toolchain_openwrt_mips.cmake \
--jerry-libc OFF \
--lto OFF
Currenlty the JerryScript libc does not supports the mips platform, that's why the --jerry-libc OFF argument
is passed during build.
2. Copy the binary
After a successful build the build/bin/jerry binary file can be copied to the target device.
On how to copy a binary file to an OpenWrt target device please see the OpenWrt manual(s).