macOS: Bundle fluidsynth and ghostscript (#3250)

* macOS: Build fixes for fluidsynth and ghostscript to ensure they get detected and bundled. Add required packages for build.

* macOS: Don't link against fluidsynth and only bundle if detected.

---------

Co-authored-by: cold-brewed <cold-brewed@users.noreply.github.com>

.ci/dependencies_macports.txt

@@ -11,3 +11,5 @@ vulkan-headers
 MoltenVK
 qt5
 wget
+fluidsynth
+ghostscript

src/printer/CMakeLists.txt

@@ -14,3 +14,10 @@
 #
 
 add_library(print OBJECT png.c prt_cpmap.c prt_escp.c prt_text.c prt_ps.c)
+
+if(APPLE)
+    find_library(GHOSTSCRIPT_LIB gs)
+    if (NOT GHOSTSCRIPT_LIB)
+        message(WARNING "Could not find ghostscript. The library will not be bundled and any related features will not work.")
+    endif()
+endif ()

src/qt/CMakeLists.txt

@@ -299,7 +299,7 @@ endif()
 
 # loads a macro to install Qt5 plugins on macOS
 # based on https://stackoverflow.com/questions/35612687/cmake-macos-x-bundle-with-bundleutiliies-for-qt-application
-macro(install_qt5_plugin _qt_plugin_name _qt_plugins_var _prefix)
+macro(install_qt5_plugin _qt_plugin_name _runtime_plugins_var _prefix)
     get_target_property(_qt_plugin_path "${_qt_plugin_name}" LOCATION)
     if(EXISTS "${_qt_plugin_path}")
         get_filename_component(_qt_plugin_file "${_qt_plugin_path}" NAME)
@@ -307,7 +307,7 @@ macro(install_qt5_plugin _qt_plugin_name _qt_plugins_var _prefix)
         get_filename_component(_qt_plugin_type "${_qt_plugin_type}" NAME)
         set(_qt_plugin_dest "${_prefix}/PlugIns/${_qt_plugin_type}")
         install(FILES "${_qt_plugin_path}" DESTINATION "${_qt_plugin_dest}")
-        list(APPEND ${_qt_plugins_var} "\${CMAKE_INSTALL_PREFIX_ABSOLUTE}/${_qt_plugin_dest}/${_qt_plugin_file}")
+        list(APPEND ${_runtime_plugins_var} "\${CMAKE_INSTALL_PREFIX_ABSOLUTE}/${_qt_plugin_dest}/${_qt_plugin_file}")
     else()
         message(FATAL_ERROR "QT plugin ${_qt_plugin_name} not found")
     endif()
@@ -320,10 +320,25 @@ if (APPLE AND CMAKE_MACOSX_BUNDLE)
     set(INSTALL_LIB_DIR "${prefix}/Frameworks")
 
     # using the install_qt5_plugin to add Qt plugins into the macOS app bundle
-    install_qt5_plugin("Qt${QT_MAJOR}::QCocoaIntegrationPlugin" QT_PLUGINS ${prefix})
-    install_qt5_plugin("Qt${QT_MAJOR}::QMacStylePlugin" QT_PLUGINS ${prefix})
-    install_qt5_plugin("Qt${QT_MAJOR}::QICOPlugin" QT_PLUGINS ${prefix})
-    install_qt5_plugin("Qt${QT_MAJOR}::QICNSPlugin" QT_PLUGINS ${prefix})
+    install_qt5_plugin("Qt${QT_MAJOR}::QCocoaIntegrationPlugin" RUNTIME_PLUGINS ${prefix})
+    install_qt5_plugin("Qt${QT_MAJOR}::QMacStylePlugin" RUNTIME_PLUGINS ${prefix})
+    install_qt5_plugin("Qt${QT_MAJOR}::QICOPlugin" RUNTIME_PLUGINS ${prefix})
+    install_qt5_plugin("Qt${QT_MAJOR}::QICNSPlugin" RUNTIME_PLUGINS ${prefix})
+
+    # Install libraries that are loaded at runtime and not linked
+    if (GHOSTSCRIPT_LIB)
+        set(GS_LIBRARY_NAME "libgs.dylib")
+        file(REAL_PATH ${GHOSTSCRIPT_LIB} GS_LIB_RESOLVED)
+        install(FILES ${GS_LIB_RESOLVED} DESTINATION ${INSTALL_LIB_DIR} RENAME ${GS_LIBRARY_NAME})
+        list(APPEND RUNTIME_PLUGINS "\${CMAKE_INSTALL_PREFIX_ABSOLUTE}/${INSTALL_LIB_DIR}/${GS_LIBRARY_NAME}")
+    endif ()
+
+    if (FLUIDSYNTH_LIB)
+        set(FLUIDSYNTH_LIBRARY_NAME "libfluidsynth.dylib")
+        file(REAL_PATH ${FLUIDSYNTH_LIB} FLUIDSYNTH_LIB_RESOLVED)
+        install(FILES ${FLUIDSYNTH_LIB_RESOLVED} DESTINATION ${INSTALL_LIB_DIR} RENAME ${FLUIDSYNTH_LIBRARY_NAME})
+        list(APPEND RUNTIME_PLUGINS "\${CMAKE_INSTALL_PREFIX_ABSOLUTE}/${INSTALL_LIB_DIR}/${FLUIDSYNTH_LIBRARY_NAME}")
+    endif ()
 
     file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/qt.conf"
         "[Paths]\nPlugins = PlugIns\n")
@@ -345,7 +360,7 @@ if (APPLE AND CMAKE_MACOSX_BUNDLE)
     install(CODE "
         include(BundleUtilities)
         get_filename_component(CMAKE_INSTALL_PREFIX_ABSOLUTE \$ENV{DESTDIR}\${CMAKE_INSTALL_PREFIX} ABSOLUTE)
-        fixup_bundle(\"\${CMAKE_INSTALL_PREFIX_ABSOLUTE}/86Box.app\" \"${QT_PLUGINS}\" \"${DIRS}\")
+        fixup_bundle(\"\${CMAKE_INSTALL_PREFIX_ABSOLUTE}/86Box.app\" \"${RUNTIME_PLUGINS}\" \"${DIRS}\")
         execute_process(
             COMMAND ${CMAKE_INSTALL_NAME_TOOL} -add_rpath \"@executable_path/../Frameworks/\"
             \"\${CMAKE_INSTALL_PREFIX_ABSOLUTE}/${INSTALL_RUNTIME_DIR}/86Box\")

src/sound/CMakeLists.txt

@@ -85,6 +85,12 @@ if(RTMIDI)
 endif()
 
 if(FLUIDSYNTH)
+    if(APPLE)
+        find_library(FLUIDSYNTH_LIB fluidsynth)
+        if (NOT FLUIDSYNTH_LIB)
+            message(WARNING "Could not find fluid synth. The library will not be bundled and any related features will not work.")
+        endif()
+    endif ()
     target_compile_definitions(snd PRIVATE USE_FLUIDSYNTH)
     target_sources(snd PRIVATE midi_fluidsynth.c)
 endif()