Specifying dynamic linker

[streamliner18]

My use case involves a highly customized system that requires any program to be compiled with test -Wl,--dynamic-linker=/lib/ld-musl-x86_64.so.1 or it won't properly execute. (OpenWRT with BusyBox). In that case, may I know where I can add this flag in the exxo bootstrapping/build process?

For your reference, a binary compiled with Exxo would generate a "not found" error under BusyBox, and the ldd outputs shows this:

root@XNCB3B95FF859068:~/senpai# ldd SteelSenpai
        /lib64/ld-linux-x86-64.so.2 (0x55bcb8e11000)
        libpthread.so.0 => /lib64/ld-linux-x86-64.so.2 (0x55bcb8e11000)
        libdl.so.2 => /lib64/ld-linux-x86-64.so.2 (0x55bcb8e11000)
        libutil.so.1 => /lib64/ld-linux-x86-64.so.2 (0x55bcb8e11000)
        libm.so.6 => /lib64/ld-linux-x86-64.so.2 (0x55bcb8e11000)
        libc.so.6 => /lib64/ld-linux-x86-64.so.2 (0x55bcb8e11000)
Error relocating SteelSenpai: xdr_pointer: symbol not found
Error relocating SteelSenpai: __dcgettext: symbol not found
Error relocating SteelSenpai: clnt_perror: symbol not found
Error relocating SteelSenpai: clnt_pcreateerror: symbol not found
Error relocating SteelSenpai: __strncpy_chk: symbol not found
Error relocating SteelSenpai: __longjmp_chk: symbol not found
Error relocating SteelSenpai: __fprintf_chk: symbol not found
Error relocating SteelSenpai: xdr_bool: symbol not found
Error relocating SteelSenpai: __finite: symbol not found
Error relocating SteelSenpai: __printf_chk: symbol not found
Error relocating SteelSenpai: __rawmemchr: symbol not found
Error relocating SteelSenpai: __memcpy_chk: symbol not found
Error relocating SteelSenpai: __isinff: symbol not found
Error relocating SteelSenpai: xdr_opaque: symbol not found
Error relocating SteelSenpai: __vsnprintf_chk: symbol not found
Error relocating SteelSenpai: xdr_u_int: symbol not found
Error relocating SteelSenpai: xdr_bytes: symbol not found
Error relocating SteelSenpai: tmpnam_r: symbol not found
Error relocating SteelSenpai: __strcat_chk: symbol not found
Error relocating SteelSenpai: clnt_spcreateerror: symbol not found
Error relocating SteelSenpai: __vfprintf_chk: symbol not found
Error relocating SteelSenpai: __isnan: symbol not found
Error relocating SteelSenpai: clnttcp_create: symbol not found
Error relocating SteelSenpai: __isinf: symbol not found
Error relocating SteelSenpai: authdes_create: symbol not found
Error relocating SteelSenpai: __strcpy_chk: symbol not found
Error relocating SteelSenpai: xdr_enum: symbol not found
Error relocating SteelSenpai: __syslog_chk: symbol not found
Error relocating SteelSenpai: __open64_2: symbol not found
Error relocating SteelSenpai: __memset_chk: symbol not found
Error relocating SteelSenpai: __fread_chk: symbol not found
Error relocating SteelSenpai: __libc_clntudp_bufcreate: symbol not found
Error relocating SteelSenpai: authunix_create_default: symbol not found
Error relocating SteelSenpai: xdr_free: symbol not found
Error relocating SteelSenpai: xdr_string: symbol not found
Error relocating SteelSenpai: __sprintf_chk: symbol not found
Error relocating SteelSenpai: __realpath_chk: symbol not found
Error relocating SteelSenpai: __snprintf_chk: symbol not found
Error relocating SteelSenpai: clnt_create: symbol not found
Error relocating SteelSenpai: __memmove_chk: symbol not found
Error relocating SteelSenpai: host2netname: symbol not found
Error relocating SteelSenpai: __mbrlen: symbol not found
Error relocating SteelSenpai: _libc_intl_domainname: symbol not found