linux + piano keyboard support

CMakeLists.txt

@@ -1,9 +1,10 @@
 
-cmake_minimum_required(VERSION 4.0)
+cmake_minimum_required(VERSION 3.21)
 project(sonobulus LANGUAGES CXX)
 
 set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++20")
 
 # get dependencies
 include(FetchContent)
@@ -59,12 +60,13 @@ add_library(sonobulus_core STATIC
     src/synth/Instrument.cpp
     src/synth/Instruments/PianoString.cpp
 )
+
 target_link_libraries(sonobulus_core PRIVATE
     Qt6::Core
     Qt6::Quick
     rtaudio
     rtmidi
-    libconfig++
+    config++
 )
 
 target_include_directories(sonobulus_core PRIVATE 
@@ -82,6 +84,8 @@ qt_add_executable(sonobulus
     src/main.cpp
 )
 
+set_target_properties(sonobulus PROPERTIES OUTPUT_NAME "sonobulus.out")
+
 qt_add_qml_module(sonobulus
     URI sonobulus
     VERSION 1.0
@@ -89,6 +93,7 @@ qt_add_qml_module(sonobulus
 )
 
 target_include_directories(sonobulus PRIVATE 
+    ${CMAKE_SOURCE_DIR}/src/
     ${rtaudio_SOURCE_DIR}
     ${rtmidi_SOURCE_DIR}
     ${libconfig_SOURCE_DIR}/lib