ci test

.github/workflows/build.yml

@@ -25,9 +25,9 @@ jobs:
           apt-get update
           apt-get --yes install git
           git config --global --add safe.directory "$GITHUB_WORKSPACE"
-      - uses: lukka/get-cmake@latest
+      - uses: lukka/get-cmake@v3.27.7 # later versions fail with glibc version error
         with:
-          cmakeVersion: "~3.22.0"
+          cmakeVersion: "~3.16.0"
       - name: Check out
         uses: actions/checkout@v3
         with:

CMakeLists.txt

@@ -1,4 +1,4 @@
-CMAKE_MINIMUM_REQUIRED(VERSION 3.9)
+CMAKE_MINIMUM_REQUIRED(VERSION 3.16)
 
 # Set the given policy to NEW. If it does not exist, it will not be set. If it
 # is already set to NEW (most likely due to predating the minimum required CMake
@@ -619,22 +619,22 @@ FIND_PACKAGE(Samplerate 0.1.8 MODULE REQUIRED)
 
 # set compiler flags
 IF(CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")
-	SET(WERROR_FLAGS "-Wall -Werror=unused-function -Wno-sign-compare -Wno-strict-overflow")
+	SET(WERROR_FLAGS -Wall -Werror=unused-function -Wno-sign-compare -Wno-strict-overflow)
 	OPTION(USE_WERROR "Add -werror to the build flags. Stops the build on warnings" OFF)
 	IF(${USE_WERROR})
-		SET(WERROR_FLAGS "${WERROR_FLAGS} -Werror")
+		LIST(APPEND WERROR_FLAGS -Werror)
 	ENDIF()
 
 	# Due to a regression in gcc-4.8.X, we need to disable array-bounds check
 	IF (CMAKE_COMPILER_IS_GNUCXX AND ((CMAKE_CXX_COMPILER_VERSION VERSION_EQUAL "4.8.0") OR (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER "4.8.0") OR LMMS_BUILD_WIN32))
-		SET(WERROR_FLAGS "${WERROR_FLAGS} -Wno-array-bounds -Wno-attributes")
+		LIST(APPEND WERROR_FLAGS -Wno-array-bounds -Wno-attributes)
 	ENDIF()
 ELSEIF(MSVC)
 	# Remove any existing /W flags
 	STRING(REGEX REPLACE "/W[0-4]" "" CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS})
 	SET(WERROR_FLAGS "/W2")
 	IF(${USE_WERROR})
-		SET(WERROR_FLAGS "${WERROR_FLAGS} /WX")
+		LIST(APPEND WERROR_FLAGS "/WX")
 	ENDIF()
 ENDIF()
 
@@ -647,11 +647,6 @@ IF(NOT CMAKE_BUILD_TYPE)
 		"MinSizeRel" "RelWithDebInfo")
 ENDIF()
 
-SET(CMAKE_C_FLAGS "${WERROR_FLAGS} ${CMAKE_C_FLAGS}")
-SET(CMAKE_CXX_FLAGS "${WERROR_FLAGS} ${CMAKE_CXX_FLAGS}")
-SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -DLMMS_DEBUG")
-SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -DLMMS_DEBUG")
-
 if(CMAKE_VERSION VERSION_GREATER_EQUAL "3.16")
 	set(NOOP_COMMAND "${CMAKE_COMMAND}" "-E" "true")
 else()

plugins/CarlaBase/CMakeLists.txt

@@ -15,7 +15,7 @@ if(LMMS_HAVE_WEAKCARLA)
   SET(CARLA_NATIVE_LIB carla_native-plugin)
 
   ADD_LIBRARY(${CARLA_NATIVE_LIB} SHARED DummyCarla.cpp)
-  TARGET_INCLUDE_DIRECTORIES(${CARLA_NATIVE_LIB} PUBLIC ${CARLA_INCLUDE_DIRS})
+  TARGET_INCLUDE_DIRECTORIES(${CARLA_NATIVE_LIB} SYSTEM PUBLIC ${CARLA_INCLUDE_DIRS})
   INSTALL(TARGETS ${CARLA_NATIVE_LIB}
     LIBRARY DESTINATION "${PLUGIN_DIR}/optional"
     RUNTIME DESTINATION "${PLUGIN_DIR}/optional"

plugins/CarlaBase/Carla.cpp

@@ -194,8 +194,8 @@ CarlaInstrument::CarlaInstrument(InstrumentTrack* const instrumentTrack, const D
         fDescriptor->activate(fHandle);
 
     // we need a play-handle which cares for calling play()
-	auto iph = new InstrumentPlayHandle(this, instrumentTrack);
-	Engine::audioEngine()->addPlayHandle( iph );
+    auto iph = new InstrumentPlayHandle(this, instrumentTrack);
+    Engine::audioEngine()->addPlayHandle( iph );
 
 #if CARLA_VERSION_HEX >= CARLA_MIN_PARAM_VERSION
     // text filter completion

plugins/MidiImport/CMakeLists.txt

@@ -1,8 +1,12 @@
 INCLUDE(BuildPlugin)
 
-BUILD_PLUGIN(midiimport MidiImport.cpp MidiImport.h
+ADD_LIBRARY(portsmf STATIC
 	portsmf/allegro.cpp portsmf/allegro.h portsmf/allegrosmfwr.cpp
 	portsmf/allegrord.cpp portsmf/allegrowr.cpp portsmf/allegrosmfrd.cpp
 	portsmf/mfmidi.cpp portsmf/mfmidi.h portsmf/strparse.cpp
 	portsmf/strparse.h portsmf/algrd_internal.h portsmf/algsmfrd_internal.h
-	portsmf/trace.h MOCFILES MidiImport.h)
+	portsmf/trace.h
+)
+
+BUILD_PLUGIN(midiimport MidiImport.cpp MidiImport.h MOCFILES MidiImport.h)
+TARGET_LINK_LIBRARIES(midiimport portsmf)

plugins/OpulenZ/CMakeLists.txt

@@ -1,20 +1,20 @@
 INCLUDE(BuildPlugin)
 
-# Avoid unused warnings for mididata.h
-IF(CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")
-SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-unused-variable")
-ENDIF()
-
-INCLUDE_DIRECTORIES(adplug/src)
-
-BUILD_PLUGIN(opulenz
-	OpulenZ.cpp
-	OpulenZ.h
+ADD_LIBRARY(adplug STATIC
 	adplug/src/opl.h
 	adplug/src/fmopl.c
 	adplug/src/fmopl.h
 	adplug/src/temuopl.cpp
 	adplug/src/temuopl.h
+)
+TARGET_INCLUDE_DIRECTORIES(adplug PRIVATE adplug/src)
+TARGET_INCLUDE_DIRECTORIES(adplug SYSTEM INTERFACE adplug/src)
+
+BUILD_PLUGIN(opulenz
+	OpulenZ.cpp
+	OpulenZ.h
 	MOCFILES OpulenZ.h
 	EMBEDDED_RESOURCES "${CMAKE_CURRENT_SOURCE_DIR}/*.png"
 )
+
+TARGET_LINK_LIBRARIES(opulenz adplug)

src/CMakeLists.txt

@@ -128,6 +128,9 @@ TARGET_COMPILE_DEFINITIONS(lmms
 	PRIVATE $<TARGET_PROPERTY:lmmsobjs,INTERFACE_COMPILE_DEFINITIONS>
 )
 
+TARGET_COMPILE_DEFINITIONS(lmms PUBLIC $<$<CONFIG:Debug>:LMMS_DEBUG>)
+TARGET_COMPILE_OPTIONS(lmms PUBLIC ${WERROR_FLAGS})
+
 # Set Visual Studio startup project to lmms
 # https://stackoverflow.com/a/37994396/8166701
 IF(NOT CMAKE_VERSION VERSION_LESS 3.6)
@@ -210,6 +213,7 @@ ENDFOREACH()
 
 set_target_properties(lmms PROPERTIES
 	ENABLE_EXPORTS ON
+	UNITY_BUILD_UNIQUE_ID "CMAKE_UNITY_ID"
 )
 
 IF(LMMS_BUILD_WIN32)

src/common/SharedMemory.cpp

@@ -44,8 +44,12 @@
 #	include <QSharedMemory>
 #endif
 
+#ifndef CMAKE_UNITY_ID
+#define CMAKE_UNITY_ID
+#endif
 
 namespace {
+namespace CMAKE_UNITY_ID {
 
 template<typename F>
 int retryWhileInterrupted(F&& function) noexcept(std::is_nothrow_invocable_v<F>)
@@ -65,6 +69,7 @@ void deleteShmObject(const char* name) noexcept { shm_unlink(name); }
 using FileDescriptor = lmms::UniqueNullableResource<int, -1, deleteFileDescriptor>;
 using ShmObject = lmms::UniqueNullableResource<const char*, nullptr, deleteShmObject>;
 
+} // namespace CMAKE_UNITY_ID
 } // namespace
 
 
@@ -80,8 +85,8 @@ class SharedMemoryImpl
 		m_key{"/" + key}
 	{
 		const auto openFlags = readOnly ? O_RDONLY : O_RDWR;
-		const auto fd = FileDescriptor{
-			retryWhileInterrupted([&]() noexcept { return shm_open(m_key.c_str(), openFlags, 0); })
+		const auto fd = CMAKE_UNITY_ID::FileDescriptor{
+			CMAKE_UNITY_ID::retryWhileInterrupted([&]() noexcept { return shm_open(m_key.c_str(), openFlags, 0); })
 		};
 		if (!fd)
 		{
@@ -105,15 +110,15 @@ class SharedMemoryImpl
 		m_key{"/" + key},
 		m_size{size}
 	{
-		const auto fd = FileDescriptor{
-			retryWhileInterrupted([&]() noexcept { return shm_open(m_key.c_str(), O_RDWR | O_CREAT | O_EXCL, 0600); })
+		const auto fd = CMAKE_UNITY_ID::FileDescriptor{
+			CMAKE_UNITY_ID::retryWhileInterrupted([&]() noexcept { return shm_open(m_key.c_str(), O_RDWR | O_CREAT | O_EXCL, 0600); })
 		};
 		if (fd.get() == -1)
 		{
 			throw std::system_error{errno, std::generic_category(), "SharedMemoryImpl: shm_open() failed"};
 		}
 		m_object.reset(m_key.c_str());
-		if (retryWhileInterrupted([&]() noexcept { return ftruncate(fd.get(), m_size); }) == -1)
+		if (CMAKE_UNITY_ID::retryWhileInterrupted([&]() noexcept { return ftruncate(fd.get(), m_size); }) == -1)
 		{
 			throw std::system_error{errno, std::generic_category(), "SharedMemoryImpl: ftruncate() failed"};
 		}
@@ -139,7 +144,7 @@ class SharedMemoryImpl
 	std::string m_key;
 	std::size_t m_size;
 	void* m_mapping;
-	ShmObject m_object;
+	CMAKE_UNITY_ID::ShmObject m_object;
 };
 
 #else

src/gui/SubWindow.cpp

@@ -92,6 +92,13 @@ SubWindow::SubWindow( QWidget *parent, Qt::WindowFlags windowFlags ) :
 	m_windowTitle->setAttribute( Qt::WA_TransparentForMouseEvents, true );
 	m_windowTitle->setGraphicsEffect( m_shadow );
 
+	// Workaround for Qt < 5.12.0, see
+	// - https://stackoverflow.com/questions/10755058/qflags-enum-type-conversion-fails-all-of-a-sudden
+	// - https://stackoverflow.com/questions/39919142/broken-bitwise-or-operator-in-a-qt-project
+	// -
+	// - https://code.qt.io/cgit/qt/qtbase.git/commit/src/corelib/global/qnamespace.h?id=e759d38d491d9044a0558b1d45911e3b4115e772
+	using ::operator|;
+
 	// disable the minimize button
 	setWindowFlags( Qt::SubWindow | Qt::WindowMaximizeButtonHint |
 		Qt::WindowSystemMenuHint | Qt::WindowCloseButtonHint |