From 16b964d04d9c3a343fe27be86135154425177fd3 Mon Sep 17 00:00:00 2001
From: Vladimir Chebotarev <chebotarev@yandex-team.ru>
Date: Wed, 23 Aug 2017 15:01:48 +0300
Subject: [PATCH] cmake: Avoiding check target conflicts. [#CHEBOTAREV-14]

---
 cmake/add_check.cmake | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/cmake/add_check.cmake b/cmake/add_check.cmake
index 1f93c5bcfd7..c6abbcdb321 100644
--- a/cmake/add_check.cmake
+++ b/cmake/add_check.cmake
@@ -1,14 +1,16 @@
 # Adding test output on failure
 enable_testing ()
 
-if (CMAKE_CONFIGURATION_TYPES)
-    add_custom_target (check COMMAND ${CMAKE_CTEST_COMMAND}
-        --force-new-ctest-process --output-on-failure --build-config "$<CONFIGURATION>"
-        WORKING_DIRECTORY ${CMAKE_BINARY_DIR})
-else ()
-    add_custom_target (check COMMAND ${CMAKE_CTEST_COMMAND}
-        --force-new-ctest-process --output-on-failure
-        WORKING_DIRECTORY ${CMAKE_BINARY_DIR})
+if (NOT TARGET check)
+    if (CMAKE_CONFIGURATION_TYPES)
+        add_custom_target (check COMMAND ${CMAKE_CTEST_COMMAND}
+            --force-new-ctest-process --output-on-failure --build-config "$<CONFIGURATION>"
+            WORKING_DIRECTORY ${CMAKE_BINARY_DIR})
+    else ()
+        add_custom_target (check COMMAND ${CMAKE_CTEST_COMMAND}
+            --force-new-ctest-process --output-on-failure
+            WORKING_DIRECTORY ${CMAKE_BINARY_DIR})
+    endif ()
 endif ()
 
 macro (add_check target)