Add note to README.md

This commit is contained in:
Boris Kolpackov 2022-04-24 15:38:37 +02:00
parent 55e7bd4edb
commit 86ce902bf6

View File

@ -235,9 +235,10 @@ substitution because it was already inserted as part of the
preprocessed on Windows.
While there is no bulletproof way to detect such situations (because the
unconditional check could be `BUILD2_AUTOCONF_LIBC_VERSION` itself), it is a
good idea for checks that are based on other checks to verify that the base
macros are in fact defined, for example:
unconditional check could be `BUILD2_AUTOCONF_LIBC_VERSION` itself; perhaps
we should only have private bases that are only accessed by the user via
derived public checks), it is a good idea for checks that are based on
other checks to verify that the base macros are in fact defined, for example:
```
// HAVE_EXPLICIT_BZERO : BUILD2_AUTOCONF_LIBC_VERSION