Applied OS X 11 stat64 configure.in patch from Dave Beckett

autoconf/configure.in

@@ -156,7 +156,12 @@ dnl
 AC_DEFINE(HAVE_CONFIG_H)
 AC_HEADER_STDC
 AC_HEADER_STDBOOL
-AC_CHECK_FUNCS(memcpy basename snprintf stat64)
+AC_CHECK_FUNCS(memcpy basename snprintf)
+dnl OSX 11 (apple silicon) lets you link stat64() but fails to compile
+dnl so use a compile test for stat64() instead of a link test.
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main() { stat64(); }])],
+		  [AC_DEFINE([HAVE_STAT64], [1], [Is stat64() available])],
+		  [])
 AC_CHECK_HEADERS(limits.h)
 
 if test "$IPC_SUPPORT" = "yes"; then

doc/ACKNOWLEDGEMENTS.md

@@ -75,6 +75,6 @@ is acknowledged and greatly appreciated:
  * [ikasty](https://github.com/ikasty) - added relative filename display to "`--watchfd`"
  * [Michael Weiß](https://github.com/quitschbo) - corrected behaviour when not attached to a terminal
  * [christoph-zededa](https://github.com/christoph-zededa) - provided OS X support for "`--watchfd`"
- * [Dave Beckett](https://github.com/dajobe)) - added "`@filename`" syntax to "`--size`"
+ * [Dave Beckett](https://github.com/dajobe)) - added "`@filename`" syntax to "`--size`", and corrected an autoconf problem with stat64 on OS X
 
 ---

doc/NEWS.md

@@ -1,6 +1,7 @@
 UNRELEASED
  * dropped: support for Red Hat Enterprise Linux and its derivatives has been dropped; removed the RPM spec file, and will no longer build binaries
  * fix: correction to `pv_in_foreground()` to behave as its comment block says it should, when not on a terminal - corrects [GH#19 "No output in Arch Linux initcpio after 1.6.6"](https://github.com/a-j-wood/pv/issues/19), [GH#55 "pv Stopped Working in the Background"](https://github.com/a-j-wood/pv/issues/55) (pull request [#64](https://github.com/a-j-wood/pv/pull/64) supplied by [Michael Weiß](https://github.com/quitschbo))
+ * fix: workaround for OS X 11 behaviour in configure script regarding stat64 at compile time (pull request [#57](https://github.com/a-j-wood/pv/pull/57) supplied by [Dave Beckett](https://github.com/dajobe))
  * feature: the "`--size`" option now accepts "`@filename`" to use the size of another file (pull request [#57](https://github.com/a-j-wood/pv/pull/57) supplied by [Dave Beckett](https://github.com/dajobe))
  * feature: the "`--watchfd`" option is now available on OS X (pull request [#60](https://github.com/a-j-wood/pv/pull/60) supplied by [christoph-zededa](https://github.com/christoph-zededa))
  * feature: the "`--watchfd`" option will now show relative filenames, if they are under the current directory (pull request [#66](https://github.com/a-j-wood/pv/pull/66) supplied by [ikasty](https://github.com/ikasty))