cpython

Tree: 62be74290a

Ross Burton 2a9c3805dd closes bpo-34585: Don't do runtime test to get float byte order. (GH-9085) Currently configure.ac uses AC_RUN_IFELSE to determine the byte order of doubles, but this silently fails under cross compilation and Python doesn't do floats properly. Instead, steal a macro from autoconf-archive which compiles code using magic doubles (which encode to ASCII) and grep for the representation in the binary. RFC because this doesn't yet handle the weird ancient ARMv4 OABI 'mixed-endian' encoding properly. This encoding is ancient and I don't believe the union of "Python 3.8 users" and "OABI users" has anything in. Should the support for this just be dropped too? Alternatively, someone will need to find an OABI toolchain to verify the encoding of the magic double.	7 years ago
..
ax_c_float_words_bigendian.m4	closes bpo-34585: Don't do runtime test to get float byte order. (GH-9085)	7 years ago
ax_check_openssl.m4	bpo-32598: Use autoconf to detect usable OpenSSL (#5242)	8 years ago

Ross Burton 2a9c3805dd closes bpo-34585: Don't do runtime test to get float byte order. (GH-9085)

Currently configure.ac uses AC_RUN_IFELSE to determine the byte order of doubles, but this silently fails under cross compilation and Python doesn't do floats properly.

Instead, steal a macro from autoconf-archive which compiles code using magic doubles (which encode to ASCII) and grep for the representation in the binary.

RFC because this doesn't yet handle the weird ancient ARMv4 OABI 'mixed-endian' encoding properly. This encoding is ancient and I don't believe the union of "Python 3.8 users" and "OABI users" has anything in. Should the support for this just be dropped too? Alternatively, someone will need to find an OABI toolchain to verify the encoding of the magic double.

7 years ago

ax_c_float_words_bigendian.m4

closes bpo-34585: Don't do runtime test to get float byte order. (GH-9085)

7 years ago

ax_check_openssl.m4

bpo-32598: Use autoconf to detect usable OpenSSL (#5242)

8 years ago