>>> 4th 3.64.1 Extracting
gzip -d -c /tmp/instance-9/dl/4th/4th-3.64.1-unix.tar.gz | tar --strip-components=1 -C /tmp/instance-9/output-1/build/4th-3.64.1   -xf -
>>> 4th 3.64.1 Patching

Applying 0001-avoid-regen-during-install.patch using patch: 
patching file sources/Makefile
Hunk #1 succeeded at 122 (offset 2 lines).
>>> 4th 3.64.1 Configuring
>>> 4th 3.64.1 Building
PATH="/tmp/instance-9/output-1/host/bin:/tmp/instance-9/output-1/host/sbin:/home/autobuild/make:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" SHARED=1 /home/autobuild/make/make -j1 -C /tmp/instance-9/output-1/build/4th-3.64.1/sources all CROSS="/tmp/instance-9/output-1/host/bin/aarch64_be-linux-gnu-" CFLAGS="-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Og -g0 -D_FORTIFY_SOURCE=2 -DUNIX -fsigned-char -fPIC" FOURTH=/tmp/instance-9/output-1/host/bin/4th
make[1]: Entering directory '/tmp/instance-9/output-1/build/4th-3.64.1/sources'
cp stage.h editor.h
cp 4th.c stage.c
/tmp/instance-9/output-1/host/bin/aarch64_be-linux-gnu-gcc -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Og -g0 -D_FORTIFY_SOURCE=2 -DUNIX -fsigned-char -fPIC   -c -o stage.o stage.c
cc1: error: unknown value 'cortex-a75.cortex-a55' for -mcpu
cc1: note: valid arguments are: cortex-a35 cortex-a53 cortex-a57 cortex-a72 cortex-a73 thunderx thunderxt88p1 thunderxt88 thunderxt81 thunderxt83 xgene1 falkor qdf24xx exynos-m1 thunderx2t99p1 vulcan thunderx2t99 cortex-a57.cortex-a53 cortex-a72.cortex-a53 cortex-a73.cortex-a35 cortex-a73.cortex-a53 generic; did you mean 'cortex-a72.cortex-a53'?
make[1]: *** [<builtin>: stage.o] Error 1
rm stage.c
make[1]: Leaving directory '/tmp/instance-9/output-1/build/4th-3.64.1/sources'
make: *** [package/pkg-generic.mk:293: /tmp/instance-9/output-1/build/4th-3.64.1/.stamp_built] Error 2
make: Leaving directory '/tmp/instance-9/buildroot'