diff --git a/gperftools.changes b/gperftools.changes
index f3b6f3f..fe366b4 100644
--- a/gperftools.changes
+++ b/gperftools.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Fri Feb 17 11:23:45 CET 2012 - hmacht@suse.de
+
+- enable build with libunwind
+
 -------------------------------------------------------------------
 Thu Feb 16 22:17:11 UTC 2012 - jengelh@medozas.de
 
diff --git a/gperftools.spec b/gperftools.spec
index 0413b15..f713bd0 100644
--- a/gperftools.spec
+++ b/gperftools.spec
@@ -26,15 +26,7 @@ Patch4:         %{name}-fix_docdir.patch
 Patch11:	%{name}_fix_multiple_install_headers.patch
 Patch12:	%{name}_fix_unassigned_malloc_in_unittest.patch
 Patch14:        %{name}_gcc46.patch
-BuildRequires:  gcc-c++ pkg-config autoconf automake libtool
-# Can't use libunwind.  See bnc#393927 and bnc#395623
-%ifarch x86_64 ia64 ppc ppc64 s390 s390x
-%define no_libunwind_on_64 "-DNO_TCMALLOC_SAMPLES"
-%define no_libunwind_on_64_config "--enable-frame-pointers"
-%else
-%define no_libunwind_on_64 ""
-%define no_libunwind_on_64_config ""
-%endif
+BuildRequires:  gcc-c++ pkg-config autoconf automake libtool libunwind-devel
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 Summary:        Performance Tools for C++
 Provides:	google-perftools
@@ -69,9 +61,9 @@ files for developing applications that use the gperftools package.
 
 %build
 autoreconf -fi
-export CXXFLAGS="$RPM_OPT_FLAGS -fno-strict-aliasing %no_libunwind_on_64" \
-export CFLAGS="$RPM_OPT_FLAGS -fno-strict-aliasing %no_libunwind_on_64" \
-%configure --disable-static --with-gnu-ld --with-pic %no_libunwind_on_64_config
+export CXXFLAGS="$RPM_OPT_FLAGS -fno-strict-aliasing" \
+export CFLAGS="$RPM_OPT_FLAGS -fno-strict-aliasing" \
+%configure --disable-static --with-gnu-ld --with-pic
 make %{?_smp_mflags}
 
 %install