$ wget repo.tinycorelinux.net/9.x/x86_64/tcz/curl.tcz
$ sudo mount curl.tcz /tmp/image
$ file /tmp/image/usr/local/bin/curl
/tmp/image/usr/local/bin/curl: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-x86-64.so.2, for GNU/Linux 3.16.6, stripped
There's no reason why icewm would not work on CorePure64 - it would perhaps make more sense to compile it on 10.x rather than 9.x.