Make error

gistfile1.txt

[  5%] Building CXX object lib/Alembic/AbcCoreAbstract/CMakeFiles/AlembicAbcCoreAbstract.dir/TimeSamplingType.cpp.o
cd /Users/Murphy/source/abcbuild/lib/Alembic/AbcCoreAbstract && /usr/bin/c++   -DDEBUG=1 -DPLATFORM_DARWIN -DPLATFORM=DARWIN -g -I/usr/local/Cellar/boost/1.49.0/include -I/usr/local/Cellar/ilmbase/1.0.2/include/OpenEXR -I/usr/local/include -I/Users/Murphy/source/abcsource/lib    -UNDEBUG -Wall -Werror -Wextra -Wno-unused-parameter -fPIC -fPIC -o CMakeFiles/AlembicAbcCoreAbstract.dir/TimeSamplingType.cpp.o -c /Users/Murphy/source/abcsource/lib/Alembic/AbcCoreAbstract/TimeSamplingType.cpp
In file included from /Users/Murphy/source/abcsource/lib/Alembic/AbcGeom/ArchiveBounds.cpp:37:
In file included from /Users/Murphy/source/abcsource/lib/Alembic/AbcGeom/ArchiveBounds.h:40:
In file included from /Users/Murphy/source/abcsource/lib/Alembic/AbcGeom/Foundation.h:40:
In file included from /Users/Murphy/source/abcsource/lib/Alembic/Abc/All.h:44:
/Users/Murphy/source/abcsource/lib/Alembic/Abc/ArchiveInfo.h:56:21: error: variable 'kApplicationNameKey' is not needed and will not be emitted [-Werror,-Wunneeded-internal-declaration]
static const char * kApplicationNameKey = "_ai_Application";
                    ^
/Users/Murphy/source/abcsource/lib/Alembic/Abc/ArchiveInfo.h:57:21: error: variable 'kDateWrittenKey' is not needed and will not be emitted [-Werror,-Wunneeded-internal-declaration]
static const char * kDateWrittenKey = "_ai_DateWritten";
                    ^
/Users/Murphy/source/abcsource/lib/Alembic/Abc/ArchiveInfo.h:58:21: error: variable 'kUserDescriptionKey' is not needed and will not be emitted [-Werror,-Wunneeded-internal-declaration]
static const char * kUserDescriptionKey = "_ai_Description";
                    ^
3 errors generated.
make[2]: *** [lib/Alembic/AbcGeom/CMakeFiles/AlembicAbcGeom.dir/ArchiveBounds.cpp.o] Error 1
make[1]: *** [lib/Alembic/AbcGeom/CMakeFiles/AlembicAbcGeom.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
/usr/local/Cellar/cmake/2.8.7/bin/cmake -E cmake_progress_report /Users/Murphy/source/abcbuild/CMakeFiles 43
[  6%] Building CXX object lib/Alembic/Abc/CMakeFiles/AlembicAbc.dir/IArchive.cpp.o
cd /Users/Murphy/source/abcbuild/lib/Alembic/Abc && /usr/bin/c++   -DDEBUG=1 -DPLATFORM_DARWIN -DPLATFORM=DARWIN -g -I/usr/local/Cellar/boost/1.49.0/include -I/usr/local/Cellar/ilmbase/1.0.2/include/OpenEXR -I/usr/local/include -I/Users/Murphy/source/abcsource/lib    -UNDEBUG -Wall -Werror -Wextra -Wno-unused-parameter -fPIC -fPIC -o CMakeFiles/AlembicAbc.dir/IArchive.cpp.o -c /Users/Murphy/source/abcsource/lib/Alembic/Abc/IArchive.cpp