On Tue, Apr 28, 2026 at 10:52:16PM +0300, Monica Vaida wrote:
When trying to build libxslt I get many errors during the compilation
of two files, `libexslt/math.c` and `libexslt/date.c`, both part of
the libxslt extension library, libexslt. The errors are caused by
`NAN` being undefined in `<math.h>` due to the VAX's nonstandard
floating-point.
You need to patch xsltproc to cope with architectures that do not define
NAN. That is why the define is optional in the C standard - some machines
just do not have it.