From f31e703dca3277284dc1e5818561ec5b6dadc5c5 Mon Sep 17 00:00:00 2001
From: John Marino <marino@FreeBSD.org>
Date: Mon, 20 Oct 2014 07:33:00 +0000
Subject: Add Mk/Uses/alias.mk

When on used FreeBSD, this tool doesn't do anything.  However, when used
on DragonFly, it will define __FreeBSD__ appropriately in CFLAGS which
allows the port to build with minimal or no extra patches.

Differential Revision:	https://reviews.freebsd.org/D950
Reviewed by:		portmgr
Approved by:		bapt (portmgr)
---
 Mk/Uses/alias.mk | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 Mk/Uses/alias.mk

(limited to 'Mk')

diff --git a/Mk/Uses/alias.mk b/Mk/Uses/alias.mk
new file mode 100644
index 000000000000..16104549d15b
--- /dev/null
+++ b/Mk/Uses/alias.mk
@@ -0,0 +1,31 @@
+# $FreeBSD$
+#
+# Add __FreeSBD__ definition to CFLAGS
+# Used by DPorts when masquerading as FreeBSD allows port to build without
+# additional patches
+#
+# Feature:      alias
+# Usage:        USES=alias or USES=alias:ARGS
+# Valid ARGS:   8, 9 (default), 10, 11
+#
+# MAINTAINER:	marino@FreeBSD.org
+
+.if !defined(_INCLUDE_USES_ALIAS_MK)
+_INCLUDE_USES_ALIAS_MK=    yes
+
+.if ${OPSYS} == DragonFly
+
+.if empty(alias_ARGS)
+CFLAGS+=	-D__FreeBSD__=9
+.else
+.  if ${alias_ARGS} == 8 || ${alias_ARGS} == 10 \
+   || ${alias_ARGS} == 9 || ${alias_ARGS} == 11
+CFLAGS+=	-D__FreeBSD__=${alias_ARGS}
+.  else
+IGNORE=	invalid MAJOR RELEASE argument (${alias_ARGS}) for USES=alias
+.  endif
+.endif
+
+.endif # OPSYS == DragonFly
+
+.endif
-- 
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