[mono] Move some culture-dependent source files to a separate directo…

…ry (mono#19912)

* [mono] Move culture-info-tables.h to a separate directory

We'd like to remove culture-info-tables.h from the dotnet/runtime copy of mono since we use ICU
there for globalization like the rest of .NET 5.

The plan is:
1. We move the file (and some others) to a separate directory (this PR)
2. We tell the sync bot to skip `culture/` in the future
3. We delete the files (or make them empty) in dotnet/runtime
* Also move locale.c and culture-info.h

* Also move mono_w32process_ver_language_name

* [msvc] don't compile locales.c if it doesn't exist

   It exists for now, but won't after we stop syncing culture/ to dotnet/runtime

m4/mono-output.m4

@@ -16,6 +16,7 @@ AC_DEFUN([AC_MONO_OUTPUT], [
 		llvm/Makefile
 		mono/Makefile
 		mono/btls/Makefile
+		mono/culture/Makefile
 		mono/native/Makefile
 		mono/utils/Makefile
 		mono/metadata/Makefile

mono/Makefile.am

@@ -16,9 +16,11 @@ if ENABLE_NETCORE
 btls_dirs =
 managed_unit_test_dirs =
 native_unit_test_dirs =
+culture_dirs =
 else
 managed_unit_test_dirs = tests
 native_unit_test_dirs = unit-tests
+culture_dirs = culture
 endif
 
 if ENABLE_PERFTRACING
@@ -30,14 +32,14 @@ SUBDIRS = eglib arch utils sgen zlib $(eventpipe_dirs) metadata mini profiler $(
 else
 
 if CROSS_COMPILING
-SUBDIRS = $(btls_dirs) eglib arch utils cil zlib $(sgen_dirs) metadata mini dis profiler $(native_dirs)
+SUBDIRS = $(btls_dirs) $(culture_dirs) eglib arch utils cil zlib $(sgen_dirs) metadata mini dis profiler $(native_dirs)
 else
 if INSTALL_MONOTOUCH
-SUBDIRS = $(btls_dirs) eglib arch utils zlib $(sgen_dirs) metadata mini profiler $(native_dirs)
+SUBDIRS = $(btls_dirs) $(culture_dirs) eglib arch utils zlib $(sgen_dirs) metadata mini profiler $(native_dirs)
 else
-SUBDIRS = $(btls_dirs) eglib arch utils cil zlib $(sgen_dirs) metadata mini dis $(managed_unit_test_dirs) $(native_unit_test_dirs) benchmark profiler $(native_dirs)
+SUBDIRS = $(btls_dirs) $(culture_dirs) eglib arch utils cil zlib $(sgen_dirs) metadata mini dis $(managed_unit_test_dirs) $(native_unit_test_dirs) benchmark profiler $(native_dirs)
 endif
 endif
 endif
 
-DIST_SUBDIRS = btls native eglib arch utils cil zlib $(sgen_dirs) metadata mini dis $(managed_unit_test_dirs) $(native_unit_test_dirs) benchmark profiler
+DIST_SUBDIRS = btls $(culture_dirs) native eglib arch utils cil zlib $(sgen_dirs) metadata mini dis $(managed_unit_test_dirs) $(native_unit_test_dirs) benchmark profiler

mono/culture/.gitignore

@@ -0,0 +1,12 @@
+/Makefile
+/Makefile.in
+/.libs
+/.deps
+/*.lo
+/*.la
+/*.o
+/*.a
+/semantic.cache
+/.project
+/.cproject
+/TAGS

mono/culture/Makefile.am

@@ -0,0 +1,24 @@
+MAKEFLAGS := $(MAKEFLAGS) --no-builtin-rules
+
+AM_CPPFLAGS = -I$(top_srcdir) -I$(top_srcdir)/mono $(GLIB_CFLAGS) $(SHARED_CFLAGS)
+
+CFLAGS := $(filter-out @CXX_REMOVE_CFLAGS@, @CFLAGS@)
+
+if !ENABLE_MSVC_ONLY
+
+noinst_LTLIBRARIES = libmono-culture.la
+
+if !HOST_WIN32
+unix_sources = w32process-unix-language.c
+
+platform_sources = $(unix_sources)
+endif
+
+libmono_culture_la_SOURCES = \
+	$(platform_sources)	\
+	culture-info.h	\
+	culture-info-tables.h	\
+	locales.c
+libmono_culture_la_CPPFLAGS = $(AM_CPPFLAGS) @CXX_ADD_CFLAGS@
+
+endif # ENABLE_MSVC_ONLY

mono/metadata/locales.c → mono/culture/locales.c

@@ -28,8 +28,8 @@
 #include <mono/metadata/exception.h>
 #include <mono/metadata/monitor.h>
 #include <mono/metadata/locales.h>
-#include <mono/metadata/culture-info.h>
-#include <mono/metadata/culture-info-tables.h>
+#include <mono/culture/culture-info.h>
+#include <mono/culture/culture-info-tables.h>
 #include <mono/utils/bsearch.h>
 
 #ifndef DISABLE_NORMALIZATION
@@ -40,7 +40,7 @@
 #if defined(__APPLE__)
 #include <CoreFoundation/CoreFoundation.h>
 #endif
-#include "icall-decl.h"
+#include <mono/metadata/icall-decl.h>
 
 #undef DEBUG