From 8c023326c79b4fdb7eaa26600b1af622f5bce318 Mon Sep 17 00:00:00 2001
From: Mitch Curtis <mitch.curtis@qt.io>
Date: Thu, 11 Jan 2018 12:26:32 +0100
Subject: config_help.txt: document that some sanitize combinations are not
 valid

Saves people the trouble of trying it out themselves. When I tried
"address" and "thread", I got:

cc1plus: error: -fsanitize=address and -fsanitize=kernel-address
are incompatible with -fsanitize=thread

Change-Id: I48ae817e60d0b71d5349e1dbce8706cc8430c2c4
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
---
 config_help.txt | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'config_help.txt')

diff --git a/config_help.txt b/config_help.txt
index 9c424391a9..0bb440b556 100644
--- a/config_help.txt
+++ b/config_help.txt
@@ -121,6 +121,9 @@ Build options:
   -gcov ................ Instrument with the GCov code coverage tool [no]
   -sanitize {address|thread|memory|undefined}
                          Instrument with the specified compiler sanitizer.
+                         Note that some sanitizers cannot be combined;
+                         for example, -sanitize address cannot be combined with
+                         -sanitize thread.
 
   -c++std <edition> .... Select C++ standard <edition> [c++1z/c++14/c++11]
                          (Not supported with MSVC)
-- 
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