Kill optflags on PPC64le

eigen3.spec

@@ -4,6 +4,12 @@
 # debuginfo package for the empty main package.
 %global debug_package %{nil}
 
+# FIXME ICE on ppc64le when buildings docs with optflags
+%ifarch ppc64le
+%global optflags %{nil}
+%endif
+
+
 %if 0%{?fedora} >= 33
 %global blaslib flexiblas
 %else
@@ -78,12 +84,7 @@ Developer documentation for Eigen.
     -DCMAKEPACKAGE_INSTALL_DIR=share/cmake/%{name}
 
 %cmake_build
-%ifarch ppc64le
-# FIXME HACK: ICE when building docs, just create empty folder
-mkdir -p %{_vpath_builddir}/doc/html
-%else
 %cmake_build --target doc
-%endif
 
 rm -f %{_vpath_builddir}/doc/html/installdox
 rm -f %{_vpath_builddir}/doc/html/unsupported/installdox