[PATCH] defaultenv: fix empty CONFIG_DEFAULT_ENVIRONMENT_PATH

[Jon Ringle]

if CONFIG_DEFAULT_ENVIRONMENT_PATH="" then
$(DEFAULT_ENVIRONMENT_PATH) expands to 'defaultenv "" '
The "" would cause every single file found in $(srctree) to be included in
$(ENV_FILES). This would then cause scripts/mod/sumversions.c to get
recompiled using $(CC) and fail compilation if $(CC) points to a newlib
cross compiler

Signed-off-by: Jon Ringle <jon at ringle.org>
---
 common/Makefile |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/common/Makefile b/common/Makefile
index 753455b..cda2ad1 100644
--- a/common/Makefile
+++ b/common/Makefile
@@ -30,9 +30,11 @@ ifeq ($(CONFIG_DEFAULT_ENVIRONMENT_GENERIC),y)
 DEFAULT_ENVIRONMENT_PATH = "defaultenv"
 endif
 
+ifneq ($(CONFIG_DEFAULT_ENVIRONMENT_PATH),"")
 DEFAULT_ENVIRONMENT_PATH += $(CONFIG_DEFAULT_ENVIRONMENT_PATH)
+endif
 
-ENV_FILES := $(shell cd $(srctree); for i in $(DEFAULT_ENVIRONMENT_PATH); do find $${i} -type f -exec readlink -f {} \;; done)
+ENV_FILES := $(shell cd $(srctree); for i in $(DEFAULT_ENVIRONMENT_PATH); do find $${i} -type f -exec readlink -f '{}' \;; done)
 
 endif # ifdef CONFIG_DEFAULT_ENVIRONMENT
 
-- 
1.7.0.4