[builder2@th-486 SPECS]$ rpmbuild -bb --without x test.spec --target=i486-pld-linux
Building target platforms: i486-pld-linux
error: line 1: Unknown tag: -O2 -fno-strict-aliasing -fwrapv -march=athlon
[builder2@th-486 SPECS]$ rpmbuild -bb test.spec --without x --target=i486-pld-linux
Building target platforms: i486-pld-linux
error: line 1: Unknown tag: -O2 -fno-strict-aliasing -fwrapv -march=athlon
[builder2@th-486 SPECS]$ rpmbuild -bb test.spec --target=i486-pld-linux  --without x
Building target platforms: i486-pld-linux
error: line 1: Unknown tag: -O2 -fno-strict-aliasing -fwrapv -march=i486
[builder2@th-486 SPECS]$ cat test.spec
%(echo %optflags)
[builder2@th-486 SPECS]$