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extensions: port better to MINUX 3, HP-UX, autoheader 2.62
Some of these changes are merged in from git Autoconf.
* m4/extensions.m4 (AC_USE_SYSTEM_EXTENSIONS):
When deciding whether to define _XOPEN_SOURCE, inspect the
preprocessor macro __hpux instead of the more-heavyweight
operation of requiring AC_CANONICAL_HOST. Define _NETBSD_HOST on
MINUX, for MINUX 3. Use USE_SYSTEM_EXTENSIONS, not __EXTENSIONS__,
as the key for __EXTENSIONS__.
author | Paul Eggert <eggert@cs.ucla.edu> |
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date | Wed, 06 Feb 2013 22:41:08 -0800 |
parents | 8f6d3e05c7e2 |
children | 8636d98120a9 |