Merge bitcoin#17521: depends: only use D-Bus with Qt on linux

6fdf5da depends: only use dbus with qt on linux (fanquake)

Pull request description:

  Since bitcoin#8210 we've been passing `-dbus-runtime` when configuring Qt, however D-Bus isn't used on macOS or Windows. So rather than blanket passing `-dbus-runtime`, only use D-Bus when building for linux, and disable it for Windows and macOS. This also saves some time building qt in depends (for windows or macOS).

  This gist contains a diff of the symbols in a macOS bitcoin-qt after applying this change: https://gist.github.com/fanquake/317e5c9c7d1b5e37a0c1ce8001af18c4.

ACKs for top commit:
  laanwj:
    ACK 6fdf5da

Tree-SHA512: 7c7df6036f27dae6adb807edf94cd26b4dafa3728976d219a68f7388b6477777b35acebd507320e4469c9f2fcf016b311c82e0b12d50546cb5ab66a1e955e464

Author: fanquake

depends/packages/qt.mk

@@ -25,7 +25,6 @@ $(package)_config_opts_debug = -debug
 $(package)_config_opts += -bindir $(build_prefix)/bin
 $(package)_config_opts += -c++std c++11
 $(package)_config_opts += -confirm-license
-$(package)_config_opts += -dbus-runtime
 $(package)_config_opts += -hostprefix $(build_prefix)
 $(package)_config_opts += -no-compile-examples
 $(package)_config_opts += -no-cups
@@ -105,8 +104,10 @@ $(package)_config_opts += -no-feature-vnc
 $(package)_config_opts += -no-feature-wizard
 $(package)_config_opts += -no-feature-xml
 
+$(package)_config_opts_darwin = -no-dbus
+
 ifneq ($(build_os),darwin)
-$(package)_config_opts_darwin = -xplatform macx-clang-linux
+$(package)_config_opts_darwin += -xplatform macx-clang-linux
 $(package)_config_opts_darwin += -device-option MAC_SDK_PATH=$(OSX_SDK)
 $(package)_config_opts_darwin += -device-option MAC_SDK_VERSION=$(OSX_SDK_VERSION)
 $(package)_config_opts_darwin += -device-option CROSS_COMPILE="$(host)-"
@@ -122,12 +123,17 @@ $(package)_config_opts_linux += -no-feature-xlib
 $(package)_config_opts_linux += -system-freetype
 $(package)_config_opts_linux += -fontconfig
 $(package)_config_opts_linux += -no-opengl
+$(package)_config_opts_linux += -dbus-runtime
 $(package)_config_opts_arm_linux += -platform linux-g++ -xplatform bitcoin-linux-g++
 $(package)_config_opts_i686_linux  = -xplatform linux-g++-32
 $(package)_config_opts_x86_64_linux = -xplatform linux-g++-64
 $(package)_config_opts_aarch64_linux = -xplatform linux-aarch64-gnu-g++
 $(package)_config_opts_riscv64_linux = -platform linux-g++ -xplatform bitcoin-linux-g++
-$(package)_config_opts_mingw32  = -no-opengl -xplatform win32-g++ -device-option CROSS_COMPILE="$(host)-"
+
+$(package)_config_opts_mingw32 = -no-opengl
+$(package)_config_opts_mingw32 += -no-dbus
+$(package)_config_opts_mingw32 += -xplatform win32-g++
+$(package)_config_opts_mingw32 += -device-option CROSS_COMPILE="$(host)-"
 
 $(package)_config_opts_android = -xplatform android-clang
 $(package)_config_opts_android += -android-sdk $(ANDROID_SDK)
@@ -137,6 +143,7 @@ $(package)_config_opts_android += -device-option CROSS_COMPILE="$(host)-"
 $(package)_config_opts_android += -egl
 $(package)_config_opts_android += -qpa xcb
 $(package)_config_opts_android += -no-eglfs
+$(package)_config_opts_android += -no-dbus
 $(package)_config_opts_android += -opengl es2
 $(package)_config_opts_android += -qt-freetype
 $(package)_config_opts_android += -no-fontconfig