The earlier patch
  https://gcc.gnu.org/pipermail/gcc-patches/2021-July/575418.html
refine the way to generate sysroot suffix, but it can't find the
right path for all CPUs. The SYSROOT_SUFFIX_SPEC should be defined
to fix it.

gcc/
        * config/csky/csky-linux-elf.h (SYSROOT_SUFFIX_SPEC): New.
---
 gcc/config/csky/csky-linux-elf.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/gcc/config/csky/csky-linux-elf.h b/gcc/config/csky/csky-linux-elf.h
index 677c201b218..3f67af64c15 100644
--- a/gcc/config/csky/csky-linux-elf.h
+++ b/gcc/config/csky/csky-linux-elf.h
@@ -65,6 +65,14 @@
 
 #define GLIBC_DYNAMIC_LINKER 
"/lib/ld-linux-cskyv2%{mfloat-abi=hard:-hf}%{mbig-endian:-be}.so.1"
 
+#define SYSROOT_SUFFIX_SPEC                                    \
+  "%{mbig-endian:/big}"                                                \
+  "%{mcpu=ck807*:/ck807}"                                      \
+  "%{mcpu=ck860*:/ck860}"                                      \
+  "%{mcpu=ck800*:/ck800}"                                      \
+  "%{mfloat-abi=softfp:/soft-fp}"                              \
+  "%{mfloat-abi=hard:/hard-fp}"
+
 #define LINUX_TARGET_LINK_SPEC "%{h*} %{version:-v}            \
    %{b}                                                                \
    %{static:-Bstatic}                                          \
-- 
2.32.1 (Apple Git-133)

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