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From c405c3035b595970e65ac9586909618525372c45 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
Date: Tue, 7 Aug 2018 17:34:47 +0200
Subject: [PATCH] meson: add -Dlog-trace to set LOG_TRACE

The justification is the same as for -Dvalgrind: setting config in
meson in this way is easier, because when the value is changed stuff
that should be rebuilt is rebuilt.

(cherry picked from commit fd5dec9adf76591d713f163d43d04e3beb76893e)

Resolves: #1696224
---
 meson.build       | 2 ++
 meson_options.txt | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/meson.build b/meson.build
index 709597e5c4..c1013d525b 100644
--- a/meson.build
+++ b/meson.build
@@ -782,6 +782,7 @@ conf.set10('ENABLE_DEBUG_HASHMAP', enable_debug_hashmap)
 conf.set10('ENABLE_DEBUG_MMAP_CACHE', enable_debug_mmap_cache)
 
 conf.set10('VALGRIND', get_option('valgrind'))
+conf.set10('LOG_TRACE', get_option('log-trace'))
 
 #####################################################################
 
@@ -2993,6 +2994,7 @@ foreach tuple : [
         ['debug hashmap'],
         ['debug mmap cache'],
         ['valgrind',         conf.get('VALGRIND') == 1],
+        ['trace logging',    conf.get('LOG_TRACE') == 1],
 ]
 
         if tuple.length() >= 2
diff --git a/meson_options.txt b/meson_options.txt
index 5716f45ccf..f06a130582 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -52,6 +52,8 @@ option('memory-accounting-default', type : 'boolean',
        description : 'enable MemoryAccounting= by default')
 option('valgrind', type : 'boolean', value : false,
        description : 'do extra operations to avoid valgrind warnings')
+option('log-trace', type : 'boolean', value : false,
+       description : 'enable low level debug logging')
 
 option('utmp', type : 'boolean',
        description : 'support for utmp/wtmp log handling')