meson: Move config.h to root directory

Similar to the commit in audacious-core with the difference
that mpg123 still needs the generated config.h file in src/.

Author: radioactiveman

src/config.h.meson config.h.mesonsrc/config.h.meson renamed to config.h.meson

@@ -101,13 +101,19 @@ if cc.get_id() in ['gcc', 'clang']
   check_cflags = common_flags
   check_cxxflags = common_flags + cxx_flags
 
+  config_h_full_path = join_paths(meson.current_build_dir(), 'src', 'config.h')
+
   add_project_arguments(cc.get_supported_arguments(check_cflags), language: 'c')
   add_project_arguments(cxx.get_supported_arguments(check_cxxflags), language: 'cpp')
+  add_project_arguments('-include', config_h_full_path, language: ['c', 'cpp'])
 
   if have_darwin
     add_project_arguments(objc.get_supported_arguments(check_cflags), language: 'objc')
     add_project_arguments(objcpp.get_supported_arguments(check_cxxflags), language: 'objcpp')
+    add_project_arguments('-include', config_h_full_path, language: ['objc', 'objcpp'])
   endif
+else
+  error('Please implement -include handling for your chosen compiler.')
 endif
 
 

meson.build

@@ -1,20 +1,6 @@
 src_inc = include_directories('.')
 
 
-config_h_full_path = join_paths(meson.current_build_dir(), 'config.h')
-
-
-if cc.get_id() in ['gcc', 'clang']
-  add_project_arguments('-include', config_h_full_path, language: ['c', 'cpp'])
-
-  if have_darwin
-    add_project_arguments('-include', config_h_full_path, language: ['objc', 'objcpp'])
-  endif
-else
-  error('Please implement -include handling for your chosen compiler.')
-endif
-
-
 # input plugins
 subdir('metronom')
 subdir('psf')
@@ -290,6 +276,7 @@ endif
 
 
 # config.h stuff
-configure_file(input: 'config.h.meson',
+configure_file(input: '../config.h.meson',
   output: 'config.h',
-  configuration: conf)
+  configuration: conf
+)