Add cmake flag to use system-provided miniaudio (#4867)

Example usage: `cmake -DUSE_SYSTEM_MINIAUDIO=ON ..`

CHANGELOG.md

@@ -31,6 +31,7 @@
 - Dev: Fixed flickering when running with Direct2D on Windows. (#4851)
 - Dev: Fix qtkeychain include for Qt6 users. (#4863)
 - Dev: Add a compile-time flag `CHATTERINO_UPDATER` which can be turned off to disable update checks. (#4854)
+- Dev: Add a compile-time flag `USE_SYSTEM_MINIAUDIO` which can be turned on to use the system miniaudio. (#4867)
 
 ## 2.4.6
 

CMakeLists.txt

@@ -17,6 +17,7 @@ option(USE_SYSTEM_PAJLADA_SETTINGS "Use system pajlada settings library" OFF)
 option(USE_SYSTEM_LIBCOMMUNI "Use system communi library" OFF)
 option(USE_SYSTEM_QTKEYCHAIN "Use system QtKeychain library" OFF)
 option(BUILD_WITH_QTKEYCHAIN "Build Chatterino with support for your system key chain" ON)
+option(USE_SYSTEM_MINIAUDIO "Build Chatterino with your system miniaudio" OFF)
 option(BUILD_WITH_CRASHPAD "Build chatterino with crashpad" OFF)
 option(USE_PRECOMPILED_HEADERS "Use precompiled headers" ON)
 option(BUILD_WITH_QT6 "Use Qt6 instead of default Qt5" OFF)

src/CMakeLists.txt

@@ -912,7 +912,16 @@ target_include_directories(${LIBRARY_PROJECT} PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}
 target_include_directories(${LIBRARY_PROJECT} PUBLIC ${CMAKE_SOURCE_DIR}/lib/semver/include)
 
 # miniaudio dependency https://github.com/mackron/miniaudio
-target_include_directories(${LIBRARY_PROJECT} PUBLIC ${CMAKE_SOURCE_DIR}/lib/miniaudio)
+if (USE_SYSTEM_MINIAUDIO)
+    message(STATUS "Building with system miniaudio")
+    include(CheckIncludeFileCXX)
+    CHECK_INCLUDE_FILE_CXX("miniaudio.h" MINIAUDIO_FOUND)
+    if (NOT MINIAUDIO_FOUND)
+        message(FATAL_ERROR "miniaudio.h not found on your system")
+    endif()
+else ()
+    target_include_directories(${LIBRARY_PROJECT} PUBLIC ${CMAKE_SOURCE_DIR}/lib/miniaudio)
+endif ()
 
 if (UNIX)
     if (CMAKE_DL_LIBS)