diff --git a/ghc-ppc64-pthread.patch b/ghc-ppc64-pthread.patch
new file mode 100644
index 0000000..d317ff7
--- /dev/null
+++ b/ghc-ppc64-pthread.patch
@@ -0,0 +1,18 @@
+diff -up ghc-7.0.2/aclocal.m4.pthread ghc-7.0.2/aclocal.m4
+--- ghc-7.0.2/aclocal.m4.pthread	2011-02-28 13:10:03.000000000 -0500
++++ ghc-7.0.2/aclocal.m4	2011-04-20 07:12:36.489772545 -0400
+@@ -1385,7 +1385,7 @@ AC_MSG_NOTICE(Building in-tree ghc-pwd)
+     dnl except we don't want to have to know what make is called. Sigh.
+     rm -rf utils/ghc-pwd/dist-boot
+     mkdir  utils/ghc-pwd/dist-boot
+-    if ! "$WithGhc" -v0 -no-user-package-conf -hidir utils/ghc-pwd/dist-boot -odir utils/ghc-pwd/dist-boot -stubdir utils/ghc-pwd/dist-boot --make utils/ghc-pwd/Main.hs -o utils/ghc-pwd/dist-boot/ghc-pwd
++    if ! "$WithGhc" -optl-pthread -v0 -no-user-package-conf -hidir utils/ghc-pwd/dist-boot -odir utils/ghc-pwd/dist-boot -stubdir utils/ghc-pwd/dist-boot --make utils/ghc-pwd/Main.hs -o utils/ghc-pwd/dist-boot/ghc-pwd
+     then
+         AC_MSG_ERROR([Building ghc-pwd failed])
+     fi
+diff -up ghc-7.0.2/ghc/ghc.wrapper.pthread ghc-7.0.2/ghc/ghc.wrapper
+--- ghc-7.0.2/ghc/ghc.wrapper.pthread	2011-04-20 09:58:50.307894773 -0400
++++ ghc-7.0.2/ghc/ghc.wrapper	2011-04-20 09:59:14.477894370 -0400
+@@ -1 +1 @@
+-exec "$executablename" -B"$topdir" -pgmc "$pgmgcc" -pgma "$pgmgcc" -pgml "$pgmgcc" -pgmP "$pgmgcc -E -undef -traditional" ${1+"$@"}
++exec "$executablename" -B"$topdir" -pgmc "$pgmgcc" -pgma "$pgmgcc" -pgml "$pgmgcc" -pgmP "$pgmgcc -E -undef -traditional" -optl-pthread ${1+"$@"}
diff --git a/ghc.spec b/ghc.spec
index e37309f..b787a2f 100644
--- a/ghc.spec
+++ b/ghc.spec
@@ -47,10 +47,10 @@ Version: 7.0.2
 # - release can only be reset if all library versions get bumped simultaneously
 #   (eg for a major release)
 # - minor release numbers should be incremented monotonically
-Release: 17%{?dist}
+Release: 18%{?dist}
 Summary: Glasgow Haskell Compilation system
 # fedora ghc has only been bootstrapped on the following archs:
-ExclusiveArch: %{ix86} x86_64 ppc alpha sparcv9
+ExclusiveArch: %{ix86} x86_64 ppc alpha sparcv9 ppc64 
 License: BSD
 Group: Development/Languages
 Source0: http://www.haskell.org/ghc/dist/%{version}/ghc-%{version}-src.tar.bz2
@@ -82,6 +82,9 @@ BuildRequires: hscolour
 %if %{with testsuite}
 BuildRequires: python
 %endif
+%ifarch ppc64
+BuildRequires: autoconf
+%endif
 Patch1: ghc-6.12.1-gen_contents_index-haddock-path.patch
 Patch2: ghc-gen_contents_index-type-level.patch
 Patch3: ghc-gen_contents_index-cron-batch.patch
@@ -90,6 +93,7 @@ Patch4: ghc-use-system-libffi.patch
 # (see http://hackage.haskell.org/trac/hackage/ticket/600)
 Patch5: Cabal-option-executable-dynamic.patch
 Patch6: ghc-fix-linking-on-sparc.patch
+Patch7: ghc-ppc64-pthread.patch
 
 %description
 GHC is a state-of-the-art programming suite for Haskell, a purely
@@ -172,6 +176,11 @@ rm -r ghc-tarballs/libffi
 
 %patch6 -p1 -b .sparclinking
 
+%ifarch ppc64
+%patch7 -p1 -b .pthread
+%endif
+
+
 %build
 cat > mk/build.mk << EOF
 GhcLibWays = v %{?with_prof:p} %{!?ghc_without_shared:dyn} 
@@ -194,8 +203,20 @@ HSCOLOUR_SRCS = NO
 %if %{with libffi}
 SRC_HC_OPTS += -lffi
 %endif
+%ifarch ppc64
+GhcUnregisterised=YES
+GhcWithNativeCodeGen=NO
+SplitObjs=NO
+GhcWithInterpreter=NO
+GhcNotThreaded=YES
+SRC_HC_OPTS+=-optc-mminimal-toc -optl-pthread
+SRC_CC_OPTS+=-mminimal-toc -pthread -Wa,--noexecstack
+%endif
 EOF
 
+%ifarch ppc64
+autoreconf
+%endif
 export CFLAGS="${CFLAGS:-%optflags}"
 ./configure --prefix=%{_prefix} --exec-prefix=%{_exec_prefix} \
   --bindir=%{_bindir} --sbindir=%{_sbindir} --sysconfdir=%{_sysconfdir} \
@@ -323,9 +344,11 @@ fi
 %dir %{ghclibdir}
 %{ghclibdir}/extra-gcc-opts
 %{ghclibdir}/ghc
-%{ghclibdir}/ghc-asm
 %{ghclibdir}/ghc-pkg
+%ifnarch ppc64
+%{ghclibdir}/ghc-asm
 %{ghclibdir}/ghc-split
+%endif
 %{ghclibdir}/ghc-usage.txt
 %{ghclibdir}/ghci-usage.txt
 %{ghclibdir}/hsc2hs
@@ -374,6 +397,9 @@ fi
 %endif
 
 %changelog
+* Thu Apr 21 2011 Jiri Skala <jskala@redhat.com> - 7.0.2-18
+- bootstrap to ppc64
+
 * Fri Apr  1 2011 Jens Petersen <petersen@redhat.com> - 7.0.2-17
 - rebuild against ghc-rpm-macros-0.11.14 to provide ghc-*-doc