From: Francis Deslauriers <francis.deslauriers@efficios.com>
Date: Mon, 20 Aug 2018 17:23:28 +0000 (-0400)
Subject: Silence macro redefinition warnings on macOS
X-Git-Url: http://git.efficios.com/?p=lttng-tools.git;a=commitdiff_plain;h=d575a7f8b451189ba011444a886aa1147f419f4d

Silence macro redefinition warnings on macOS

Signed-off-by: Francis Deslauriers <francis.deslauriers@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
---

diff --git a/src/common/align.h b/src/common/align.h
index 928c5b6c1..ed353206d 100644
--- a/src/common/align.h
+++ b/src/common/align.h
@@ -21,13 +21,20 @@
 #include <unistd.h>
 #include <limits.h>
 
-#ifndef PAGE_SIZE	/* Cygwin limits.h defines its own PAGE_SIZE */
+#ifndef PAGE_SIZE	/* Cygwin limits.h defines its own PAGE_SIZE. */
 #define PAGE_SIZE		sysconf(_SC_PAGE_SIZE)
 #endif
 
+#ifndef PAGE_MASK	/* macOS defines its own PAGE_MASK. */
 #define PAGE_MASK		(~(PAGE_SIZE - 1))
+#endif
+
 #define __ALIGN_MASK(v, mask)	(((v) + (mask)) & ~(mask))
+
+#ifndef ALIGN		/* macOS defines its own ALIGN. */
 #define ALIGN(v, align)		__ALIGN_MASK(v, (__typeof__(v)) (align) - 1)
+#endif
+
 #define PAGE_ALIGN(addr)	ALIGN(addr, PAGE_SIZE)
 
 /**