From ab38cca082362ea9edfdf3a6796d7127907b983a Mon Sep 17 00:00:00 2001
From: Joseph Lenox <lenox.joseph@gmail.com>
Date: Tue, 1 Jan 2019 20:32:05 -0600
Subject: [PATCH] Clipper uses constexpr, it should conform to at least C++11. 
 Fixes a build error on osx

---
 src/CMakeLists.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index b43a2bed7..3adc0a10c 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -249,6 +249,7 @@ target_compile_options(admesh PUBLIC -w)
 
 
 add_library(clipper STATIC ${LIBDIR}/clipper.cpp)
+target_compile_features(clipper PUBLIC cxx_std_11)
 target_include_directories(clipper PUBLIC ${COMMON_INCLUDES})
 target_compile_options(clipper PUBLIC -w)