meson: simplify builtin_immodules build option

Make it a yes/no/auto combo. "yes" means all modules are built into libgtk,
"no" that none are and "auto" uses the platform defaults, yes on win32,
no otherwise.

If we need more we can always extend it later.

gtk/meson.build

@@ -951,7 +951,7 @@ foreach l: immodules
   cond = l.get(2, true)
   cflags = l.get(3, [])
 
-  if cond and (builtin_immodules.contains(name) or builtin_all_immodules)
+  if cond and builtin_immodules
     mod = static_library('staticimmodule-@0@'.format(name),
                          sources + gtk_dep_sources,
                          dependencies: gtk_deps + [libgdk_dep] ,

meson.build

@@ -468,8 +468,6 @@ else
   cdata.set_quoted('ISO_CODES_PREFIX', get_option('prefix'))
 endif
 
-backend_immodules = []
-
 pc_gdk_extra_libs = []
 
 cairo_found_type = cairo_dep.type_name()
@@ -525,7 +523,6 @@ if wayland_enabled
   wlprotocolsdep = dependency('wayland-protocols', version: wayland_proto_req)
   wlcursordep    = dependency('wayland-cursor', version: wayland_req)
   wlegldep       = dependency('wayland-egl')
-  backend_immodules += ['wayland']
 
   wayland_pkgs = [
     'wayland-client', wayland_req,
@@ -551,8 +548,6 @@ if x11_enabled
   fontconfig_dep = dependency('fontconfig', fallback: ['fontconfig', 'fontconfig_dep'])
   atkbridge_dep  = dependency('atk-bridge-2.0', version: atk_req)
 
-  backend_immodules += ['xim']
-
   x11_pkgs = ['fontconfig', 'x11', 'xext', 'xi', 'xrandr']
 
   if xcursor_dep.found()
@@ -623,12 +618,10 @@ endif
 
 if broadway_enabled
   pc_gdk_extra_libs += ['-lz']
-  backend_immodules += ['broadway']
 endif
 
 if quartz_enabled
   pc_gdk_extra_libs += ['-framework Cocoa', '-framework Carbon', '-framework CoreGraphics']
-  backend_immodules += ['quartz']
 endif
 
 extra_demo_ldflags = []
@@ -643,7 +636,6 @@ if win32_enabled
     pc_gdk_extra_libs += ['-Wl,-luuid']
   endif
   pc_gdk_extra_libs += ['-lwinmm', '-ldwmapi', '-lsetupapi', '-lcfgmgr32']
-  backend_immodules += ['ime']
 
 # Check whether libepoxy is built with EGL support on Windows
   win32_has_egl = cc.links(
@@ -662,30 +654,20 @@ endif
 
 # IMModules stuff-unfortunately we need to put items here
 # as they can be built as modules or built directly into GTK
-builtin_all_immodules = false
-
 builtin_modules_opt = get_option('builtin_immodules')
-builtin_immodules = []
+if builtin_modules_opt == 'auto'
-
-if builtin_modules_opt == ''
   if os_win32
     # Current MSVC projects build all immodules directly into GTK by default,
     # as does the mingw autotools build
     message('IMModules are built into GTK for MSVC builds by default')
-    builtin_immodules = ['all']
+    builtin_immodules = true
   else
-    builtin_immodules = ['none']
+    builtin_immodules = false
   endif
+elif builtin_modules_opt == 'yes'
+  builtin_immodules = true
 else
-  builtin_immodules = builtin_modules_opt.split(',')
+  builtin_immodules = false
-endif
-
-if builtin_immodules.contains('none')
-  builtin_immodules = []
-elif builtin_immodules.contains('all')
-  builtin_all_immodules = true
-elif builtin_immodules.contains('backend')
-  builtin_immodules += backend_immodules
 endif
 
 proto_sources = [

meson_options.txt

@@ -39,5 +39,5 @@ option('tests', type: 'boolean', value: 'true',
   description : 'Build tests')
 
 # input modules
-option('builtin_immodules', type: 'string',
+option('builtin_immodules', type: 'combo', choices : ['yes', 'no', 'auto'],
-       value: '', description: 'Build specified immodules into GTK so/DLL (comma-separated list), "all", "none" or "backend"')
+       value: 'auto', description: 'Build immodules into GTK so/DLL')

modules/input/meson.build

@@ -7,7 +7,7 @@ foreach l: immodules
   cond = l.get(2, true)
   cflags = l.get(3, [])
 
-  if cond and not (builtin_immodules.contains(name) or builtin_all_immodules)
+  if cond and not builtin_immodules
     shared_module('im-@0@'.format(name),
                   immod_sources,
                   c_args: common_cflags + cflags,