From d093052a52458d684f4786a9aa7fddcab0e0c533 Mon Sep 17 00:00:00 2001
From: Andrey Dotsenko <9fcc.dev@gmail.com>
Date: Tue, 28 Aug 2018 22:28:31 +0300
Subject: [PATCH] Fix unclear error while accidentally sanitizing interface
 library

Interface libraries added since CMake 3.0 version have INTERFACE_SOURCES property instead of SOURCES so it leads to error which is unclear and prevents project from compiling. Warning would be enough it this case.
---
 cmake/FindSanitizers.cmake | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/cmake/FindSanitizers.cmake b/cmake/FindSanitizers.cmake
index 4f586a3..a11809b 100644
--- a/cmake/FindSanitizers.cmake
+++ b/cmake/FindSanitizers.cmake
@@ -62,6 +62,13 @@ function(add_sanitizers ...)
     foreach (TARGET ${ARGV})
         # Check if this target will be compiled by exactly one compiler. Other-
         # wise sanitizers can't be used and a warning should be printed once.
+        get_target_property(TARGET_TYPE ${TARGET} TYPE)
+        if (TARGET_TYPE STREQUAL "INTERFACE_LIBRARY")
+            message(WARNING "Can't use any sanitizers for target ${TARGET}, "
+                    "because it is an interface library and cannot be "
+                    "compiled directly.")
+            return()
+        endif ()
         sanitizer_target_compilers(${TARGET} TARGET_COMPILER)
         list(LENGTH TARGET_COMPILER NUM_COMPILERS)
         if (NUM_COMPILERS GREATER 1)