The build fails on a sunxi tool: /usr/bin/ld: tools/sunxi_toc0.o: in function `toc0_set_header': sunxi_toc0.c:(.text+0x363): undefined reference to `RSA_get0_d' The missing function was added in libressl v3.5.0. We don't really care, so just cut it out for now. --- a/tools/Makefile +++ b/tools/Makefile @@ -96,8 +96,7 @@ AES_OBJS-$(CONFIG_TOOLS_LIBCRYPTO) := $( # Cryptographic helpers and image types that depend on openssl/libcrypto LIBCRYPTO_OBJS-$(CONFIG_TOOLS_LIBCRYPTO) := \ - lib/fdt-libcrypto.o \ - sunxi_toc0.o + lib/fdt-libcrypto.o ROCKCHIP_OBS = lib/rc4.o rkcommon.o rkimage.o rksd.o rkspi.o