From 69a8369541af52eee2dec8112daa93ba1c7dddea Mon Sep 17 00:00:00 2001
From: Mark Olesen <Mark.Olesen@esi-group.com>
Date: Fri, 13 Dec 2019 19:52:04 +0100
Subject: [PATCH] COMP: add note about gcc-9 and deprecated-copy
---
doc/BuildIssues.md | 11 +++++++++++
wmake/rules/General/Gcc/c++ | 2 +-
2 files changed, 12 insertions(+), 1 deletion(-)
diff --git a/doc/BuildIssues.md b/doc/BuildIssues.md
index 86865e52a41..9407f831d91 100644
--- a/doc/BuildIssues.md
+++ b/doc/BuildIssues.md
@@ -21,6 +21,17 @@ We thus currently do not build with ParaView-5.7. If building plugins or with
Catalyst, please use the latest ParaView-5.6 version instead for now.
Or simply use ParaView with the regular, builtin VTK readers.
+
+### Gcc-9
+
+In the newest version, gcc will emit warnings that some compiler-generated
+copy constructors and assignment operators are deprecated.
+It is possible to suppress these with the `-Wno-deprecated-copy` flag
+until such time that these occurances are changd in the OpenFOAM source code.
+However, be aware that doing so may prevent CMake-based tool chains
+from working properly.
+
+
### Windows cross-compilation
The reacting Euler multiphase solvers currently do not build for
diff --git a/wmake/rules/General/Gcc/c++ b/wmake/rules/General/Gcc/c++
index a3e85f8f338..15b7870a3e8 100644
--- a/wmake/rules/General/Gcc/c++
+++ b/wmake/rules/General/Gcc/c++
@@ -13,7 +13,7 @@ ptFLAGS = -DNoRepository -ftemplate-depth-100
c++WARN = \
-Wall -Wextra -Wold-style-cast \
-Wnon-virtual-dtor -Wno-unused-parameter -Wno-invalid-offsetof \
- -Wno-attributes -Wno-unknown-pragmas -Wno-deprecated-copy
+ -Wno-attributes -Wno-unknown-pragmas
c++LESSWARN = \
-Wno-old-style-cast -Wno-unused-local-typedefs -Wno-array-bounds \
--
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