From 3f1ec39a8d184597a7949d02e6fb78c97d62fd3d Mon Sep 17 00:00:00 2001
From: Renz Christian Bagaporo <renz@espressif.com>
Date: Wed, 21 Aug 2019 12:00:55 +0800
Subject: [PATCH] cmake: fix issue with checking build process args

---
 tools/cmake/build.cmake | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/cmake/build.cmake b/tools/cmake/build.cmake
index c9088ba86..9285a53e1 100644
--- a/tools/cmake/build.cmake
+++ b/tools/cmake/build.cmake
@@ -295,7 +295,7 @@ endmacro()
 #
 macro(__build_set_default var default)
     set(_var __${var})
-    if(${_var})
+    if(NOT "${_var}" STREQUAL "")
         idf_build_set_property(${var} "${${_var}}")
     else()
         idf_build_set_property(${var} "${default}")