I did

./configure --enable-optimizations --enable-shared ax_cv_c_float_words_bigendian=yes

and it failed with the error messages in the attached log.

The compiler is GCC 5.5.0 and configure set the C standard to C99, changing it to C11 in the Makefile did not help. Did i do something wrongly, or it just needs a later GCC?

Any help is much appreciated.

Linked PRs

• gh-136006: fix Py_NAN expansion on Solaris systems #136575