wincompat: add resource and manifest and enable lto

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

src/Makefile

@@ -57,9 +57,13 @@ LDLIBS += -lnetwork -lbsd
 endif
 ifeq ($(PLATFORM),windows)
 CC := x86_64-w64-mingw32-gcc
-CFLAGS += -Iwincompat/include -include wincompat/compat.h
-LDLIBS += -lws2_32
-wg: wincompat/libc.o wincompat/init.o
+WINDRES := x86_64-w64-mingw32-windres
+CFLAGS += -Iwincompat/include -include wincompat/compat.h -DWINVER=0x0601 -D_WIN32_WINNT=0x0601 -flto
+LDLIBS += -lws2_32 -flto
+VERSION := $(patsubst "%",%,$(filter "%",$(file < version.h)))
+wg: wincompat/libc.o wincompat/init.o wincompat/resources.o
+wincompat/resources.o: wincompat/resources.rc wincompat/manifest.xml
+	$(WINDRES) -DVERSION_STR=$(VERSION) -O coff -c 65001 -i $< -o $@
 endif
 
 ifneq ($(V),1)

src/wincompat/manifest.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
+    <assemblyIdentity version="1.0.0.0" processorArchitecture="*" name="wg" type="win32" />
+    <compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
+        <application>
+            <!-- Windows 10 -->
+            <supportedOS Id="{8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}" />
+            <!-- Windows 8.1 -->
+            <supportedOS Id="{1f676c76-80e1-4239-95bb-83d0f6d0da78}" />
+            <!-- Windows 8 -->
+            <supportedOS Id="{4a2f28e3-53b9-4441-ba9c-d69d4a4a6e38}" />
+            <!-- Windows 7 -->
+            <supportedOS Id="{35138b9a-5d96-4fbd-8e2d-a2440225f93a}" />
+        </application>
+    </compatibility>
+    <trustInfo xmlns="urn:schemas-microsoft-com:asm.v2">
+        <security>
+            <requestedPrivileges xmlns="urn:schemas-microsoft-com:asm.v3">
+                <requestedExecutionLevel level="requireAdministrator" />
+            </requestedPrivileges>
+        </security>
+    </trustInfo>
+</assembly>

src/wincompat/resources.rc

@@ -0,0 +1,40 @@
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * Copyright (C) 2020 Jason A. Donenfeld. All Rights Reserved.
+ */
+
+#include <windows.h>
+
+#pragma code_page(65001) // UTF-8
+
+LANGUAGE LANG_NEUTRAL, SUBLANG_NEUTRAL
+CREATEPROCESS_MANIFEST_RESOURCE_ID RT_MANIFEST manifest.xml
+
+#define STRINGIZE(x) #x
+#define EXPAND(x) STRINGIZE(x)
+
+VS_VERSION_INFO VERSIONINFO
+FILEOS         VOS_NT_WINDOWS32
+FILETYPE       VFT_APP
+FILESUBTYPE    VFT2_UNKNOWN
+BEGIN
+  BLOCK "StringFileInfo"
+  BEGIN
+    BLOCK "040904b0"
+    BEGIN
+      VALUE "CompanyName", "WireGuard LLC"
+      VALUE "FileDescription", "WireGuard wg(8) CLI: Fast, Modern, Secure VPN Tunnel"
+      VALUE "FileVersion", EXPAND(VERSION_STR)
+      VALUE "InternalName", "wg"
+      VALUE "LegalCopyright", "Copyright © 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved."
+      VALUE "OriginalFilename", "wg.exe"
+      VALUE "ProductName", "WireGuard"
+      VALUE "ProductVersion", EXPAND(VERSION_STR)
+      VALUE "Comments", "https://www.wireguard.com/"
+    END
+  END
+  BLOCK "VarFileInfo"
+  BEGIN
+    VALUE "Translation", 0x409, 0x4b0
+  END
+END