Fails due to:

[  284s]
/usr/lib64/gcc/x86_64-suse-linux/9/../../../../x86_64-suse-linux/bin/ld:
/tmp/curl.so.8gtd0D.ltrans0.ltrans.o: relocation R_X86_64_PC32 against
undefined symbol `qemu_mutex_lock_func' can not be used when making a shared
object; recompile with -fPIC
[  284s]
/usr/lib64/gcc/x86_64-suse-linux/9/../../../../x86_64-suse-linux/bin/ld: final
link failed: bad value
[  284s] collect2: error: ld returned 1 exit status
[  284s] make: *** [/home/abuild/rpmbuild/BUILD/qemu-3.1.0/rules.mak:110:
block/curl.so] Error 1
[  284s] make: *** Waiting for unfinished jobs....

We should disable LTO for such a low level package.