From 4b53081b2fc3f5ff719b9ae0c49cee1c12f0e9cb Mon Sep 17 00:00:00 2001
From: Joe Orton <jorton@apache.org>
Date: Mon, 1 Jun 2020 12:45:13 +0000
Subject: * configure.in: Add --enable-thread-debug, which defines  
 APR_THREAD_DEBUG.

* locks/unix/thread_mutex.c (apr_thread_mutex_create): For
  APR_THREAD_DEBUG, use the ERRORCHECK mutex type by default (if not
  nested/recursive), which reliably fails for cases of otherwise
  undefined behaviour:

  a) relocking a mutex locked by the current thread
  b) unlocking a thread locked by another thread


git-svn-id: https://svn.apache.org/repos/asf/apr/apr/trunk@1878362 13f79535-47bb-0310-9956-ffa450edef68
---
 configure.in | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'configure.in')

diff --git a/configure.in b/configure.in
index 47f0d0b26..937bc22ba 100644
--- a/configure.in
+++ b/configure.in
@@ -435,6 +435,13 @@ AC_ARG_ENABLE(pool-debug,
     fi
   ])
 
+AC_ARG_ENABLE(thread-debug,
+  [  --enable-thread-debug   Turn on run-time thread debugging tests],
+  [ if test $enableval = yes; then
+      APR_ADDTO(CPPFLAGS, [-DAPR_THREAD_DEBUG=1])
+    fi
+  ])
+
 if test "$host" = "i586-pc-beos"; then
   AC_ARG_ENABLE(malloc-debug,[  --enable-malloc-debug   Switch on malloc_debug for BeOS],
     APR_REMOVEFROM(CFLAGS, -O2)
-- 
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