From 03482382b797f3501c3fb0df0fe12bd4e5e51a39 Mon Sep 17 00:00:00 2001
From: Richard Purdie <richard.purdie@linuxfoundation.org>
Date: Tue, 26 May 2015 11:42:26 +0100
Subject: bitbake.conf: Use immediate expansion for os.uname()

Use immediate expansion for BUILD_ARCH and BUILD_OS since there is no
point in repeatedly calling os.uname() throughout parsing. This is
worth around 2% of parsing time, small but measurable.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
---
 meta/conf/bitbake.conf | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/meta/conf/bitbake.conf b/meta/conf/bitbake.conf
index 9c72044d8d..2b86442b1d 100644
--- a/meta/conf/bitbake.conf
+++ b/meta/conf/bitbake.conf
@@ -81,8 +81,10 @@ ROOT_HOME ??= "/home/root"
 # Architecture-dependent build variables.
 ##################################################################
 
-BUILD_ARCH = "${@os.uname()[4]}"
-BUILD_OS = "${@os.uname()[0].lower()}"
+# Immediate expansion since there is no point in reapeatedly calling
+# os.uname() throughout parsing
+BUILD_ARCH := "${@os.uname()[4]}"
+BUILD_OS := "${@os.uname()[0].lower()}"
 BUILD_VENDOR = ""
 BUILD_SYS = "${BUILD_ARCH}${BUILD_VENDOR}-${BUILD_OS}"
 BUILD_PREFIX = ""
-- 
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