When I run nm -gD libcublas.so I see that both cublasLtGetStatusName and cublasLtGetStatusString are undefined (U). When I run ldd libcublas.so I get the following:
	linux-vdso64.so.1 (0x00007fff80680000)
	libcublasLt.so.11 => /usr/local/cuda-11.5/lib64/libcublasLt.so.11 (0x00007fff625f0000)
	libpthread.so.0 => /lib64/libpthread.so.0 (0x00007fff62590000)
	librt.so.1 => /lib64/librt.so.1 (0x00007fff62560000)
	libdl.so.2 => /lib64/libdl.so.2 (0x00007fff62530000)
	libm.so.6 => /lib64/libm.so.6 (0x00007fff623f0000)
	libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007fff623b0000)
	libc.so.6 => /lib64/libc.so.6 (0x00007fff62190000)
	/lib64/ld64.so.2 (0x00007fff806a0000)

When I run nm -gD libcublasLt.so I see that both cublasLtGetStatusName and cublasLtGetStatusString are defined (T). So these are both defined in libcublasLt.so and libcublas.so seems to be linked to it, yet they are still undefined in the latter.