How can I build code for CPU cortex-a55

The tool-chain I used is aarch64 and target cpu is cortex-a55, but existed compilation errors as follows.

/usr/bin/aarch64-linux-gnu-gcc test.c -o test.adx -mcpu=cortex-a55
cc1: error: unknown value ‘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-a35’?

Should I change another tool-chain to build code? Which tool-chain can be downloaded? Thanks.