Ensure 10.7 target on Mac

CMakeLists.txt

@@ -17,6 +17,7 @@ set(FLUID_PATH "" CACHE PATH "Optional path to the Fluid Decomposition repo")
 if (APPLE)
 	set(CMAKE_OSX_ARCHITECTURES x86_64)
   set(CMAKE_XCODE_GENERATE_SCHEME ON)
+  set(CMAKE_OSX_DEPLOYMENT_TARGET 10.7)
 endif()
 
 ################################################################################

scripts/target_post.cmake

@@ -5,7 +5,7 @@ if(MSVC)
   target_compile_options(${PLUGIN} PRIVATE /W3)
 else()
   target_compile_options(${PLUGIN} PRIVATE 
-    -Wall -Wextra -Wpedantic -Wreturn-type -Wconversion -Wno-conversion -Wno-c++11-narrowing -Wno-sign-compare
+    -Wall -Wextra -Wpedantic -Wreturn-type -Wconversion -Wno-c++11-narrowing
   )
 endif()
 
@@ -15,6 +15,14 @@ set_target_properties(${PLUGIN} PROPERTIES
     CXX_EXTENSIONS NO
 )
 
+if(APPLE)
+  set_target_properties(${PLUGIN} PROPERTIES
+    XCODE_GENERATE_SCHEME ON
+  )
+  #If we target 10.7 (actually < 10.9), we have to manually include this:
+  target_compile_options(${PLUGIN} PRIVATE -stdlib=libc++)
+endif()
+
 target_link_libraries(
   ${PLUGIN}
   PRIVATE