[pkgsrc/trunk]: pkgsrc/mk/platform Cache and use computed variables.

[jperkin <jperkin%pkgsrc.org@localhost>]

details:   https://anonhg.NetBSD.org/pkgsrc/rev/65f71f5049a7
branches:  trunk
changeset: 357259:65f71f5049a7
user:      jperkin <jperkin%pkgsrc.org@localhost>
date:      Tue Jan 17 15:32:17 2017 +0000

description:
Cache and use computed variables.

diffstat:

 mk/platform/Darwin.mk |  8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)

diffs (37 lines):

diff -r 7467c1e27ddb -r 65f71f5049a7 mk/platform/Darwin.mk
--- a/mk/platform/Darwin.mk     Tue Jan 17 15:25:27 2017 +0000
+++ b/mk/platform/Darwin.mk     Tue Jan 17 15:32:17 2017 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: Darwin.mk,v 1.85 2016/11/13 11:06:40 jdolecek Exp $
+# $NetBSD: Darwin.mk,v 1.86 2017/01/17 15:32:17 jperkin Exp $
 #
 # Variable definitions for the Darwin operating system.
 
@@ -81,11 +81,13 @@
 _OPSYS_SYSTEM_RPATH?=  /usr/lib
 _OPSYS_LIB_DIRS?=      /usr/lib
 
+.if !defined(OSX_VERSION)
 OSX_VERSION!=          sw_vers -productVersion
 .  if ${OSX_VERSION:R:R} != ${OSX_VERSION:R}
 OSX_VERSION:=          ${OSX_VERSION:R}
 .  endif
 MAKEFLAGS+=            OSX_VERSION=${OSX_VERSION:Q}
+.endif
 
 #
 # From Xcode 5 onwards system headers are no longer installed by default
@@ -97,10 +99,12 @@
 .if exists(/usr/include/stdio.h)
 _OPSYS_INCLUDE_DIRS?=  /usr/include
 .elif exists(/usr/bin/xcrun)
+.  if !defined(OSX_SDK_PATH)
 OSX_SDK_PATH!= /usr/bin/xcrun --sdk macosx${OSX_VERSION} --show-sdk-path 2>/dev/null || echo /nonexistent
+MAKEFLAGS+=    OSX_SDK_PATH=${OSX_SDK_PATH:Q}
+.  endif
 .  if exists(${OSX_SDK_PATH}/usr/include/stdio.h)
 _OPSYS_INCLUDE_DIRS?=  ${OSX_SDK_PATH}/usr/include
-MAKEFLAGS+=            OSX_SDK_PATH=${OSX_SDK_PATH:Q}
 .  else
 PKG_FAIL_REASON+=      "No suitable Xcode SDK or Command Line Tools installed."
 .  endif