Issue in compiling code for LinkIt Smart 7688 Duo

I'm compiling OpenWRT source code for Linkit Smart 7688 Duo. But I'm getting error for most of versions I have tried. The error as below,

Makefile:181: recipe for target '/home/mitesh/linkit_smart/build_1/openwrt/bin/targets/ramips/mt76x8/openwrt-ramips-mt76x8-alfa-network_awusfree1-ext4-sysupgrade.bin.gz' failed
make[5]: *** [/home/mitesh/linkit_smart/build_1/openwrt/bin/targets/ramips/mt76x8/openwrt-ramips-mt76x8-alfa-network_awusfree1-ext4-sysupgrade.bin.gz] Error 1
make[5]: Leaving directory '/home/mitesh/linkit_smart/build_1/openwrt/target/linux/ramips/image'
Makefile:26: recipe for target 'install' failed
make[4]: *** [install] Error 2
make[4]: Leaving directory '/home/mitesh/linkit_smart/build_1/openwrt/target/linux/ramips'
Makefile:13: recipe for target 'install' failed
make[3]: *** [install] Error 2
make[3]: Leaving directory '/home/mitesh/linkit_smart/build_1/openwrt/target/linux'
time: target/linux/install#14.84#3.44#18.39
target/Makefile:23: recipe for target 'target/linux/install' failed
make[2]: *** [target/linux/install] Error 2
make[2]: Leaving directory '/home/mitesh/linkit_smart/build_1/openwrt'
target/Makefile:19: recipe for target '/home/mitesh/linkit_smart/build_1/openwrt/staging_dir/target-mipsel_24kc_musl/stamp/.target_install' failed
make[1]: *** [/home/mitesh/linkit_smart/build_1/openwrt/staging_dir/target-mipsel_24kc_musl/stamp/.target_install] Error 2
make[1]: Leaving directory '/home/mitesh/linkit_smart/build_1/openwrt'
/home/mitesh/linkit_smart/build_1/openwrt/include/toplevel.mk:225: recipe for target 'world' failed
make: *** [world] Error 2

The versions I tried,

1] chaos_calmer (15.05)
2] v19.07.7 
3] v19.07.0
4] origin/openwrt-19.07

Steps I have followed

$ cp feeds.conf.default feeds.conf
$ echo src-git linkit https://github.com/MediaTek-Labs/linkit-smart-7688-feed.git >> feeds.conf
$ scripts/feeds update -a
$ scripts/feeds install -a
$ make menuconfig
   Target System (MediaTek Ralink MIPS)  --->  
   Subtarget (MT76x8 based boards)  ---> 
$ make -j1 V=s