From 53379dfd0c555ed811bc0afd79439211c7be03ef Mon Sep 17 00:00:00 2001
From: Victor Zverovich <victor.zverovich@gmail.com>
Date: Sun, 17 Mar 2019 10:50:19 -0700
Subject: [PATCH] Don't set CMAKE_BUILD_TYPE if fmt is a subproject (#1081)

---
 CMakeLists.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0c3e9773..1e24afd1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -27,7 +27,7 @@ endfunction()
 # Set the default CMAKE_BUILD_TYPE to Release.
 # This should be done before the project command since the latter can set
 # CMAKE_BUILD_TYPE itself (it does so for nmake).
-if (NOT CMAKE_BUILD_TYPE)
+if (MASTER_PROJECT AND NOT CMAKE_BUILD_TYPE)
   join(doc "Choose the type of build, options are: None(CMAKE_CXX_FLAGS or "
            "CMAKE_C_FLAGS used) Debug Release RelWithDebInfo MinSizeRel.")
   set(CMAKE_BUILD_TYPE Release CACHE STRING ${doc})