OpenWrt Support

Tested on OpenWrt 19.07.

See https://openwrt.org/docs/techref/instructionset/start and https://openwrt.org/docs/techref/targets/start for details.

Instruction Set	Support Status	Targets (tested in bold, unavailable SDK in strikethrough)
aarch64_cortex-a53	Yes	armvirt/64 bcm27xx/bcm2710 bcm4908/generic mediatek/mt7622 mvebu/cortexa53 sunxi/cortexa53
aarch64_cortex-a72	Yes	bcm27xx/bcm2711 mvebu/cortexa72
aarch64_generic	Yes	layerscape/armv8_64b octeontx/generic rockchip/armv8
arc_arc700	No (Chrome does not support ARC)	arc770/generic
arc_archs	No (Chrome does not support ARC)	archs38/generic
arm_arm1176jzf-s_vfp	?	bcm27xx/bcm2708
arm_arm926ej-s	?	at91/sam9x oxnas/ox810se mxs/generic
arm_cortex-a15_neon-vfpv4	Yes	armvirt/32 ipq806x/generic
arm_cortex-a5_vfpv4	Yes	at91/sama5
arm_cortex-a7	?	mediatek/mt7629
arm_cortex-a7_neon-vfpv4	Yes	bcm27xx/bcm2709 ipq40xx/generic ipq40xx/mikrotik layerscape/armv7 mediatek/mt7623 sunxi/cortexa7
arm_cortex-a8_vfpv3	Yes	omap/generic sunxi/cortexa8
arm_cortex-a9	Yes	bcm53xx/generic
arm_cortex-a9_neon	Yes	imx6/generic zynq/generic
arm_cortex-a9_vfpv3-d16	Yes	mvebu/cortexa9 tegra/generic
arm_fa526	?	gemini/generic
arm_mpcore	?	oxnas/ox820
arm_xscale	?	kirkwood/generic
mips64_mips64r2	No (Chrome does not support big-endian)	malta/be64
mips64_octeonplus	No (Chrome does not support big-endian)	octeon/generic
mips64el_mips64r2	No (OpenWrt SDK not available)	malta/le64
mips_24kc	No (Chrome does not support big-endian)	lantiq/falcon ath79/generic ath79/mikrotik ath79/nand ath79/tiny lantiq/xrx200 lantiq/xway lantiq/xway_legacy malta/be
mips_4kec	No (Chrome does not support big-endian)	realtek/generic
mips_mips32	No (Chrome does not support big-endian)	ath25/generic bcm63xx/generic bcm63xx/smp lantiq/ase
mipsel_24kc	?	malta/le ramips/mt7620 ramips/mt7621 ramips/mt76x8 ramips/rt288x ramips/rt305x
mipsel_24kc_24kf	Maybe, try mipsel_24kc	pistachio/generic
mipsel_74kc	?	bcm47xx/mips74k ramips/rt3883
mipsel_mips32	?	bcm47xx/generic bcm47xx/legacy
powerpc_464fp	No (Chrome only supports PPC64)	apm821xx/nand apm821xx/sata
powerpc_8540	No (Chrome only supports PPC64)	mpc85xx/p1010 mpc85xx/p1020 mpc85xx/p2020
i386_pentium-mmx	Supported as "x86", not i386	x86/geode x86/legacy
i386_pentium4	Supported as "x86", not i386	x86/generic
x86_64	Yes	x86/64