From 2ca05d025cba536b5fc42ecf0ada9661ed8891f5 Mon Sep 17 00:00:00 2001
From: saker <sakertooth@gmail.com>
Date: Mon, 21 Aug 2023 23:08:18 -0400
Subject: [PATCH] Bump mingw-std-threads submodule (#6817)

* Bump submodule and generate std headers

* Commit submodule update

* Downgrade to earlier commit
Can be upgraded once a proper C++20 MinGW compiler
is available for the docker images.

* Downgrade to the correct commit

* Append mingw_stdthreads to EXTRA_LIBRARIES
Currently for this CMake version, it seems that there is no support to
link other targets to object libraries. I'll add it to EXTRA_LIBRARIES
instead.

* Add LMMS_ prefix to USE_MINGW_STD_THREADS

* Use built-in MINGW CMake variable

* Use lowercase rather than uppercase
---
 src/3rdparty/CMakeLists.txt    | 6 ++++++
 src/3rdparty/mingw-std-threads | 2 +-
 src/CMakeLists.txt             | 4 ++++
 3 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/3rdparty/CMakeLists.txt b/src/3rdparty/CMakeLists.txt
index 7a6b88775..a95332a07 100644
--- a/src/3rdparty/CMakeLists.txt
+++ b/src/3rdparty/CMakeLists.txt
@@ -7,6 +7,12 @@ ADD_SUBDIRECTORY(hiir)
 ADD_SUBDIRECTORY(rpmalloc)
 ADD_SUBDIRECTORY(weakjack)
 
+if(MINGW)
+	option(MINGW_STDTHREADS_GENERATE_STDHEADERS "" ON)
+	add_subdirectory(mingw-std-threads)
+	set(LMMS_USE_MINGW_STD_THREADS ON PARENT_SCOPE)
+endif()
+
 # The lockless ring buffer library is compiled as part of the core
 SET(RINGBUFFER_DIR "${CMAKE_SOURCE_DIR}/src/3rdparty/ringbuffer/")
 SET(RINGBUFFER_DIR ${RINGBUFFER_DIR} PARENT_SCOPE)
diff --git a/src/3rdparty/mingw-std-threads b/src/3rdparty/mingw-std-threads
index 10665829d..6c2061b7d 160000
--- a/src/3rdparty/mingw-std-threads
+++ b/src/3rdparty/mingw-std-threads
@@ -1 +1 @@
-Subproject commit 10665829daaedc28629e5e9b014fe498c20d73f2
+Subproject commit 6c2061b7da41d6aa1b2162ff4383ec3ece864bc6
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 23923f616..f483d8b41 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -170,6 +170,10 @@ if(LMMS_HAVE_MP3LAME)
 	list(APPEND EXTRA_LIBRARIES mp3lame::mp3lame)
 endif()
 
+if(LMMS_USE_MINGW_STD_THREADS)
+	list(APPEND EXTRA_LIBRARIES mingw_stdthreads)
+endif()
+
 SET(LMMS_REQUIRED_LIBS ${LMMS_REQUIRED_LIBS}
 	${CMAKE_THREAD_LIBS_INIT}
 	${QT_LIBRARIES}