make[1]: Entering directory '/srv/build/amery/sunxi/sunxi-nightly/build_u-boot-mainline/build_icnova-a20-swac' GEN ./Makefile # # configuration written to .config # make[1]: Leaving directory '/srv/build/amery/sunxi/sunxi-nightly/build_u-boot-mainline/build_icnova-a20-swac' make[1]: Entering directory '/srv/build/amery/sunxi/sunxi-nightly/build_u-boot-mainline/build_icnova-a20-swac' GEN ./Makefile scripts/kconfig/conf --silentoldconfig Kconfig CHK include/config.h CFG u-boot.cfg GEN include/autoconf.mk.dep CFG spl/u-boot.cfg GEN include/autoconf.mk GEN spl/include/autoconf.mk *** Your GCC is older than 6.0 and is not supported /srv/build/amery/sunxi/sunxi-nightly/u-boot-sunxi-mainline/arch/arm/config.mk:66: recipe for target 'checkgcc6' failed make[1]: *** [checkgcc6] Error 1 make[1]: Leaving directory '/srv/build/amery/sunxi/sunxi-nightly/build_u-boot-mainline/build_icnova-a20-swac' Makefile:148: recipe for target 'sub-make' failed make: *** [sub-make] Error 2