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I had some problems with python and universal builds related to the
WORDS_BIGENDIAN macro. Because universal builds are built in one pass
(one configure), the AC_C_ENDIAN cannot be used reliably. Example:
int main()
{
#ifdef WORDS_BIGENDIAN
 printf("Big endian macro defined\n");
#else
 printf("No big endian macro defined\n");
#endif
 return 0;
}
If I build this against python 2.5, it prints no big endian macro (I
have an intel CPU), as expected. But with python 2.6.0 (official binary
from python.org), I get Big endian macro defined.