Install to --libdir=%{_prefix}/lib instead of %{_libdir}

contrib/crossrpms/gcc/build.add

@@ -37,7 +37,7 @@
     --bindir=%{_bindir} \
     --exec_prefix=%{_exec_prefix} \
     --includedir=%{_includedir} \
-    --libdir=%{_libdir} \
+    --libdir=%{_gcclibdir} \
     --libexecdir=%{_libexecdir} \
     --mandir=%{_mandir} \
     --infodir=%{_infodir} \

contrib/crossrpms/gcc/gccnewlib.add

@@ -120,7 +120,7 @@ BuildRequires:	gcc-gnat
 BuildRequires:	@rpmprefix@@tool_target@-newlib < %{newlib_version}-@NEWLIB_RPMREL@
 %endif
 
-%define gcclib %{_libdir}/gcc
+%define _gcclibdir %{_prefix}/lib
 
 @SOURCES@
 

contrib/crossrpms/gcc/install.add

@@ -24,7 +24,13 @@
 %endif
 
   # host library
-  rm -f  ${RPM_BUILD_ROOT}%{_gcclibdir}/libiberty.a
+%if "%{gcc_version}" >= "4.3.0"
+  # libiberty doesn't honor --libdir, but always installs to _libdir
+  rm -f  ${RPM_BUILD_ROOT}%{_libdir}/libiberty.a
+%else
+  # libiberty install to --libdir=...
+  rm -f ${RPM_BUILD_ROOT}%{_gcclibdir}/libiberty.a
+%endif
 
   # We use the version from binutils
   rm -f $RPM_BUILD_ROOT%{_bindir}/@tool_target@-c++filt%{_exeext}