[PATCH] mingw-host: Insert resource to enable UTF-8 active code page.

[Costas Argyris <costas.argyris@gmail.com>]

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When running in mingw host as Windows processes, the active code page used
today is the locale-specific codepage, which is not Unicode.

This patch builds the utf8 resource object file using windres and adds it
to LDFLAGS for mingw host, which makes all built executables use utf8
(65001 windows code page identifier).

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From d2ece2affe3b0daa4641ece6068d7082df093bc3 Mon Sep 17 00:00:00 2001
From: Costas Argyris <costas.argyris@gmail.com>
Date: Sun, 25 Jun 2023 21:23:59 +0100
Subject: [PATCH] mingw-host: Insert resource to enable UTF-8 active code page.

---
 config/mh-mingw            | 6 ++++++
 config/utf8-mingw.manifest | 8 ++++++++
 config/utf8-mingw.rc       | 3 +++
 3 files changed, 17 insertions(+)
 create mode 100644 config/utf8-mingw.manifest
 create mode 100644 config/utf8-mingw.rc

diff --git a/config/mh-mingw b/config/mh-mingw
index a795096f038..c02a6ccb1be 100644
--- a/config/mh-mingw
+++ b/config/mh-mingw
@@ -11,3 +11,9 @@ STAGE4_CXXFLAGS += -D__USE_MINGW_ACCESS
 # as GCC turns out to need that much more to pass all the limits-* tests.
 LDFLAGS += -Wl,--stack,12582912
 BOOT_LDFLAGS += -Wl,--stack,12582912
+
+# UTF-8 resource object
+UTF8RES := `$(WINDRES) $(srcdir)/config/utf8-mingw.rc $$r/utf8res.o \
+&& echo $$r/utf8res.o`
+
+LDFLAGS += -Wl,$(UTF8RES)
\ No newline at end of file
diff --git a/config/utf8-mingw.manifest b/config/utf8-mingw.manifest
new file mode 100644
index 00000000000..0dff8970043
--- /dev/null
+++ b/config/utf8-mingw.manifest
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<assembly manifestVersion="1.0" xmlns="urn:schemas-microsoft-com:asm.v1">
+  <application>
+    <windowsSettings>
+      <activeCodePage xmlns="http://schemas.microsoft.com/SMI/2019/WindowsSettings">UTF-8</activeCodePage>
+    </windowsSettings>
+  </application>
+</assembly>
\ No newline at end of file
diff --git a/config/utf8-mingw.rc b/config/utf8-mingw.rc
new file mode 100644
index 00000000000..96c7237c6bc
--- /dev/null
+++ b/config/utf8-mingw.rc
@@ -0,0 +1,3 @@
+#include <winuser.h>
+
+CREATEPROCESS_MANIFEST_RESOURCE_ID RT_MANIFEST "utf8-mingw.manifest"
\ No newline at end of file
-- 
2.41.0