This is based on a pull request and AIX docs. I haven't tested the
instructions myself.
Closes: https://github.com/tukaani-project/xz/pull/137
you use CC=xlc instead, you must disable threading support
with --disable-threads (usually not recommended).
+ If building a 32-bit executable, the address space available to xz
+ might be limited to 256 MiB by default. To increase the address
+ space to 2 GiB, pass LDFLAGS=-Wl,-bmaxdata:0x80000000 as an argument
+ to configure.
+
1.2.2. IRIX