s390x -O1 doesn't work either

/usr/bin/ld: /tmp/ccaNGd56.ltrans45.ltrans.o: in function `SfxMedium::CheckFileDate(com::sun:⭐:util::DateTime const&)':
/builddir/build/BUILD/libreoffice-7.4.0.2/include/com/sun/star/uno/Reference.hxx:158: undefined reference to `.LTHUNK8'
/usr/bin/ld: /builddir/build/BUILD/libreoffice-7.4.0.2/include/com/sun/star/uno/Reference.hxx:158: undefined reference to `.LTHUNK16'
/usr/bin/ld: /tmp/ccaNGd56.ltrans45.ltrans.o: in function `SfxMedium::ShowLockFileProblemDialog(SfxMedium::MessageDlg)':
/builddir/build/BUILD/libreoffice-7.4.0.2/include/com/sun/star/uno/Reference.hxx:158: undefined reference to `.LTHUNK8'
/usr/bin/ld: /builddir/build/BUILD/libreoffice-7.4.0.2/include/com/sun/star/uno/Reference.hxx:158: undefined reference to `.LTHUNK16'
/usr/bin/ld: /tmp/ccaNGd56.ltrans47.ltrans.o: in function `SfxMedium::LinkStubShowReloadEditableDialog(void*, void*)':
/builddir/build/BUILD/libreoffice-7.4.0.2/include/com/sun/star/uno/Reference.hxx:158: undefined reference to `.LTHUNK8'
/usr/bin/ld: /builddir/build/BUILD/libreoffice-7.4.0.2/include/com/sun/star/uno/Reference.hxx:158: undefined reference to `.LTHUNK16'
collect2: error: ld returned 1 exit status

libreoffice.spec

@@ -1040,7 +1040,7 @@ for i in $RPM_OPT_FLAGS; do
         # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106355
         case "$i" in
                 -O2)
-                ARCH_FLAGS="$ARCH_FLAGS -O1"
+                ARCH_FLAGS="$ARCH_FLAGS -O0"
                 continue;;
         esac
 %endif