Description of problem:
c++ -o nsMultiplexInputStream.o -c  -fvisibility=hidden -DMOZILLA_INTERNAL_API -DMOZ_THUNDERBIRD=1 -DOSTYPE=\"Linux2.6.32-71.el6\" -DOSARCH=Linux -DEXCLUDE_SKIA_DEPENDENCIES -DCHROMIUM_MOZILLA_BUILD  -DOS_LINUX=1 -DOS_POSIX=1  -D_IMPL_NS_COM -I../../ipc/chromium/src -I../../ipc/glue -I../../ipc/ipdl/_ipdlheaders  -I.. -I. -I. -I../../dist/include -I../../dist/include/nsprpub  -I/usr/include/nspr4 -I/usr/include/nss3       -fPIC -fno-rtti -fno-exceptions -Wall -Wpointer-arith -Woverloaded-virtual -Wsynth -Wno-ctor-dtor-privacy -Wno-non-virtual-dtor -Wcast-align -Wno-invalid-offsetof -Wno-variadic-macros -Werror=return-type -Wno-long-long -O2 -g -pipe -Wp,-D_FORTIFY_SOURCE=2 -fno-exceptions -fstack-protector --param=ssp-buffer-size=4 -m32 -fpermissive -fno-strict-aliasing -fshort-wchar -pthread -pipe -DNDEBUG -DTRIMMED -g -Os -fno-strict-aliasing    -DMOZILLA_CLIENT -include ../../mozilla-config.h -MD -MF .deps/nsMultiplexInputStream.pp nsMultiplexInputStream.cpp
In file included from ../../ipc/chromium/src/base/port.h:9:0,
                 from ../../ipc/chromium/src/base/basictypes.h:50,
                 from ../../ipc/chromium/src/base/file_path.h:70,
                 from ../../ipc/chromium/src/chrome/common/ipc_message_utils.h:12,
                 from ../../dist/include/IPC/IPCMessageUtils.h:42,
                 from nsMultiplexInputStream.cpp:44:
../../ipc/chromium/src/build/build_config.h:64:2: error: #error Please add support for your architecture in build/build_config.h


Version-Release number of selected component (if applicable):
thunderbird-5.0-1.fc16

Steps to Reproduce:
1. try to build on PPC/PPC64
2.
3.
  
Actual results:
http://ppc.koji.fedoraproject.org/koji/taskinfo?taskID=255063

Expected results:


Additional info:
thunderbird-3.1.11-1.fc16 built on PPC/PPC64