Hi All, I am building numpy 1.6.2 on 64 bit Mac OSX/CentOS and I found many warnings and errors of similar kind, however the numpy passes all the tests. Please let me know if I can consider this build as good? llvm-gcc-4.2: _configtest.c _configtest.c:5: error: size of array Œtest_array¹ is negative _configtest.c:1:20: error: endian.h: No such file or directory _configtest.c:7: error: ŒSIZEOF_LONGDOUBLE¹ undeclared (first use in this function) _configtest.c:1: warning: conflicting types for built-in function Œexp¹ numpy/core/src/npymath/ieee754.c.src:260: warning: implicit conversion shortens 64-bit value into a 32-bit value _configtest.c:5: warning: function declaration isn¹t a prototype _configtest.c:4: warning: conflicting types for built-in function Œfabs¹ _configtest.c:8: warning: control reaches end of non-void function numpy/core/src/umath/loops.c.src:1403: warning: ŒFLOAT_ldexp_long¹ defined but not used numpy/core/src/private/lowlevel_strided_loops.h:36: warning: ŒPyArray_FreeStridedTransferData¹ declared Œstatic¹ but never defined numpy/lib/src/_compiled_base.c:120: warning: assignment from incompatible pointer type Best Regards, Prakash Joshi