$ python setup.py build
running build
running mx_autoconf
debugging enabled for development snapshots
gcc-4.2 not found, using clang instead
configured compiler
checking compiler setup
gcc-4.2 -fno-strict-aliasing -fno-common -dynamic -DNDEBUG -g -O3 -I/usr/local/include -I/Library/Frameworks/Python.framework/Versions/2.7/include -I/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c _configtest.c -o _configtest.o
unable to execute gcc-4.2: No such file or directory
failure.
removing: _configtest.c _configtest.o
compiler problem: "gcc-4.2" not available, trying "clang" instead
configured compiler
clang -fno-strict-aliasing -fno-common -dynamic -DNDEBUG -g -O3 -I/usr/local/include -I/Library/Frameworks/Python.framework/Versions/2.7/include -I/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c _configtest.c -o _configtest.o
clang _configtest.o -L/usr/local/lib -L/Library/Frameworks/Python.framework/Versions/2.7/lib -o _configtest
success!
removing: _configtest.c _configtest.o _configtest
using "clang" instead of "gcc-4.2"
compiler setup works
checking for availability of strptime() (errors from this can safely be ignored)
clang -fno-strict-aliasing -fno-common -dynamic -DNDEBUG -g -O3 -D_GNU_SOURCE=1 -I/usr/local/include -I/Library/Frameworks/Python.framework/Versions/2.7/include -I/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c _configtest.c -o _configtest.o
clang _configtest.o -L/usr/local/lib -L/Library/Frameworks/Python.framework/Versions/2.7/lib -o _configtest
success!
removing: _configtest.c _configtest.o _configtest
strptime() is available on this platform
checking for availability of clock_gettime() (errors from this can safely be ignored)
clang -fno-strict-aliasing -fno-common -dynamic -DNDEBUG -g -O3 -D_GNU_SOURCE=1 -I/usr/local/include -I/Library/Frameworks/Python.framework/Versions/2.7/include -I/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c _configtest.c -o _configtest.o
_configtest.c:5:10: error: use of undeclared identifier 'clock_gettime'
  ptr = &clock_gettime;
         ^
1 error generated.
failure.
removing: _configtest.c _configtest.o
clock_gettime() is not available on this platform
checking for availability of clock_getres() (errors from this can safely be ignored)
clang -fno-strict-aliasing -fno-common -dynamic -DNDEBUG -g -O3 -D_GNU_SOURCE=1 -I/usr/local/include -I/Library/Frameworks/Python.framework/Versions/2.7/include -I/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c _configtest.c -o _configtest.o
_configtest.c:5:10: error: use of undeclared identifier 'clock_getres'
  ptr = &clock_getres;
         ^
1 error generated.
failure.
removing: _configtest.c _configtest.o
clock_getres() is not available on this platform
checking compiler for bad static forward handling (errors from this can safely be ignored)
clang -fno-strict-aliasing -fno-common -dynamic -DNDEBUG -g -O3 -D_GNU_SOURCE=1 -I/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -I/usr/local/include -I/Library/Frameworks/Python.framework/Versions/2.7/include -I/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c _configtest.c -o _configtest.o
success!
removing: _configtest.c _configtest.o
enabling mx debug support
macros to define: [('HAVE_STRPTIME', '1'), ('MAL_DEBUG', None)]
macros to undefine: ['HAVE_CLOCK_GETTIME', 'HAVE_CLOCK_GETRES']
running build_ext
configured compiler

building extension "mx.DateTime.mxDateTime.mxDateTime" (required)
checking for optional libraries
clang -fno-strict-aliasing -fno-common -dynamic -DNDEBUG -g -O3 -DHAVE_STRPTIME=1 -DMAL_DEBUG -UHAVE_CLOCK_GETTIME -UHAVE_CLOCK_GETRES -I/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -I/usr/local/include -I/Library/Frameworks/Python.framework/Versions/2.7/include -c _configtest.c -o _configtest.o
clang _configtest.o -L/usr/local/lib -L/Library/Frameworks/Python.framework/Versions/2.7/lib -lm -o _configtest
success!
removing: _configtest.c _configtest.o _configtest
found optional library 'm' -- defining HAVE_M_LIB
clang -fno-strict-aliasing -fno-common -dynamic -DNDEBUG -g -O3 -DHAVE_STRPTIME=1 -DMAL_DEBUG -UHAVE_CLOCK_GETTIME -UHAVE_CLOCK_GETRES -I/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -I/usr/local/include -I/Library/Frameworks/Python.framework/Versions/2.7/include -c _configtest.c -o _configtest.o
clang _configtest.o -L/usr/local/lib -L/Library/Frameworks/Python.framework/Versions/2.7/lib -lrt -o _configtest
ld: library not found for -lrt
clang: error: linker command failed with exit code 1 (use -v to see invocation)
failure.
removing: _configtest.c _configtest.o
could not find optional library 'rt' -- omitting it
building 'mx.DateTime.mxDateTime.mxDateTime' extension
creating build
creating build/temp.macosx-10.6-intel-2.7_ucs2
creating build/temp.macosx-10.6-intel-2.7_ucs2/mx-DateTime-mxDateTime-mxDateTime
creating build/temp.macosx-10.6-intel-2.7_ucs2/mx-DateTime-mxDateTime-mxDateTime/mx
creating build/temp.macosx-10.6-intel-2.7_ucs2/mx-DateTime-mxDateTime-mxDateTime/mx/DateTime
creating build/temp.macosx-10.6-intel-2.7_ucs2/mx-DateTime-mxDateTime-mxDateTime/mx/DateTime/mxDateTime
clang -fno-strict-aliasing -fno-common -dynamic -DNDEBUG -g -O3 -DUSE_FAST_GETCURRENTTIME -DHAVE_M_LIB=1 -DHAVE_STRPTIME=1 -DMAL_DEBUG -UHAVE_CLOCK_GETTIME -UHAVE_CLOCK_GETRES -Imx/DateTime/mxDateTime -I/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -I/usr/local/include -I/Library/Frameworks/Python.framework/Versions/2.7/include -c mx/DateTime/mxDateTime/mxDateTime.c -o build/temp.macosx-10.6-intel-2.7_ucs2/mx-DateTime-mxDateTime-mxDateTime/mx/DateTime/mxDateTime/mxDateTime.o
mx/DateTime/mxDateTime/mxDateTime.c:1748:24: warning: argument to 'sizeof' in '__builtin___memset_chk' call is the same expression as the destination; did you mean to
      dereference it? [-Wsizeof-pointer-memaccess]
    memset(tm,0,sizeof(tm));
    ~~~~~~~~~~~~~~~~~~~^~~~
/usr/include/secure/_string.h:77:41: note: expanded from macro 'memset'
   ? __builtin___memset_chk (dest, val, len, __darwin_obsz0 (dest))     \
                                        ^
1 warning generated.
creating build/lib.macosx-10.6-intel-2.7_ucs2
creating build/lib.macosx-10.6-intel-2.7_ucs2/mx
creating build/lib.macosx-10.6-intel-2.7_ucs2/mx/DateTime
creating build/lib.macosx-10.6-intel-2.7_ucs2/mx/DateTime/mxDateTime
Compiling with an SDK that doesn't seem to exist: /Developer/SDKs/MacOSX10.6.sdk
Please check your Xcode installation
clang -bundle -undefined dynamic_lookup -arch i386 -arch x86_64 -isysroot /Developer/SDKs/MacOSX10.6.sdk -isysroot /Developer/SDKs/MacOSX10.6.sdk -g -arch i386 -arch x86_64 -g build/temp.macosx-10.6-intel-2.7_ucs2/mx-DateTime-mxDateTime-mxDateTime/mx/DateTime/mxDateTime/mxDateTime.o -L/usr/local/lib -L/Library/Frameworks/Python.framework/Versions/2.7/lib -lm -o build/lib.macosx-10.6-intel-2.7_ucs2/mx/DateTime/mxDateTime/mxDateTime.so
ld: library not found for -lm
clang: error: linker command failed with exit code 1 (use -v to see invocation)
error: command 'clang' failed with exit status 1