From: Alan Third <alan@idiocy.org>
Date: Sun, 24 Sep 2017 11:01:03 +0000 (+0100)
Subject: Fix build on macOS (bug#28571)
X-Git-Tag: emacs-26.0.90~104^2~2
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=fec63089d53d2196b0348086aeed70277fbc02c0;p=emacs.git

Fix build on macOS (bug#28571)

* src/conf_post.h (HAVE_FUTIMENS, HAVE_FUTIMESAT, HAVE_UTIMENSAT)
[DARWIN_OS]: Undefine.
---

diff --git a/src/conf_post.h b/src/conf_post.h
index febdb8b8bf7..af946082eec 100644
--- a/src/conf_post.h
+++ b/src/conf_post.h
@@ -397,3 +397,12 @@ extern int emacs_setenv_TZ (char const *);
 #else
 # define UNINIT /* empty */
 #endif
+
+/* macOS 10.13 supports futimens, futimesat and utimensat, older
+   versions don't but can appear as though they do.  Disable them
+   entirely to avoid breaking cross-version builds on macOS.  */
+#ifdef DARWIN_OS
+# undef HAVE_FUTIMENS
+# undef HAVE_FUTIMESAT
+# undef HAVE_UTIMENSAT
+#endif