From: Denys Vlasenko <vda.linux@googlemail.com>
Date: Wed, 7 Mar 2012 23:20:01 +0000 (+0100)
Subject: build system: fix broken CONFIG_SYSROOT handling
X-Git-Tag: 1_20_0~37
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=39c2cb2e93e2acc75a5eb6dd91d81f79c787acd5;p=oweals%2Fbusybox.git

build system: fix broken CONFIG_SYSROOT handling

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
---

diff --git a/Makefile.flags b/Makefile.flags
index 68dfa57ec..92aae6fb5 100644
--- a/Makefile.flags
+++ b/Makefile.flags
@@ -104,7 +104,9 @@ else
 LDLIBS += m
 endif
 
-ifneq ($(CONFIG_SYSROOT),)
+# Note: both "" (string consisting of two quote chars) and empty string
+# are possible, and should be skipped below.
+ifneq ($(subst "",,$(CONFIG_SYSROOT)),)
 CFLAGS += --sysroot=$(CONFIG_SYSROOT)
 export SYSROOT=$(CONFIG_SYSROOT)
 endif