The platform that needed it saw it's last release in 1998,
is completely unsupported since 2006, and it was already
documented that new programs need not use AC_ISC_POSIX.
The main objective of this change is that without it autoupdate
turned AC_ISC_POSIX into AC_SEARCH_LIBS([strerror],[cposix])
in configure.ac, keeping this zombie alive forever.
---
doc/autoconf.texi | 5 ++---
lib/autoconf/specific.m4 | 2 +-
2 files changed, 3 insertions(+), 4 deletions(-)
diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index 2ae8bb9..a4f6666 100644
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -23411,11 +23411,10 @@ See @ref{AC_FUNC_GETMNTENT} and @ref{AC_CHECK_LIB}.
@defmac AC_ISC_POSIX
@acindex{ISC_POSIX}
@ovindex LIBS
-This macro adds @option{-lcposix} to output variable @code{LIBS} if
+This macro added @option{-lcposix} to output variable @code{LIBS} if
necessary for Posix facilities. Sun dropped support for the obsolete
INTERACTIVE Systems Corporation Unix on 2006-07-23. New programs
-need not use this macro. It is implemented as
-@code{AC_SEARCH_LIBS([strerror], [cposix])} (@pxref{AC_SEARCH_LIBS}).
+need not use this macro. Since autoconf 2.69 it does nothing.
@end defmac
@defmac AC_LANG_C
diff --git a/lib/autoconf/specific.m4 b/lib/autoconf/specific.m4
index 7d6be57..18a6b52 100644
--- a/lib/autoconf/specific.m4
+++ b/lib/autoconf/specific.m4
@@ -443,7 +443,7 @@ AU_DEFUN([AC_MINIX], [AC_USE_SYSTEM_EXTENSIONS])
# AC_ISC_POSIX
# ------------
-AU_DEFUN([AC_ISC_POSIX], [AC_SEARCH_LIBS([strerror], [cposix])])
+AU_DEFUN([AC_ISC_POSIX], [])
# AC_XENIX_DIR
--
1.7.9.5
