From: Tim Wiederhake <twiederh@redhat.com>
Date: Thu, 6 May 2021 15:08:33 +0000 (+0200)
Subject: meson: Allow undefined symbols when sanitizers are enabled
X-Git-Tag: v7.5.0-rc1~150
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c9ced46673941b846e4d0a82997310534085f79b;p=thirdparty%2Flibvirt.git

meson: Allow undefined symbols when sanitizers are enabled

When enabling sanitizers, clang adds some function symbols when
instrumenting the code. The exact names of those functions are an
implementation detail and should therefore not be added to any
syms file. This patch prevents build failures due to those symbols
not present in the syms file when building with sanitizers enabled.

Signed-off-by: Tim Wiederhake <twiederh@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
---

diff --git a/meson.build b/meson.build
index 5849975a72..eba6d9f765 100644
--- a/meson.build
+++ b/meson.build
@@ -491,9 +491,12 @@ libvirt_nodelete = cc.get_supported_link_arguments([
   '-Wl,-z,nodelete',
 ])
 
-libvirt_no_undefined = cc.get_supported_link_arguments([
-  '-Wl,-z,defs',
-])
+libvirt_no_undefined = []
+if get_option('b_sanitize') == 'none'
+  libvirt_no_undefined += cc.get_supported_link_arguments([
+    '-Wl,-z,defs',
+  ])
+endif
 
 libvirt_no_indirect = cc.get_supported_link_arguments([
   '-Wl,--no-copy-dt-needed-entries',