Externals: Integrate mGBA as a submodule

.gitignore

@@ -3,6 +3,7 @@ Thumbs.db
 # Ignore Finder view option files created by OS X
 .DS_Store
 # Ignore autogenerated source files
+Externals/mGBA/version.c
 Source/Core/Common/scmrev.h
 # Ignore files output by build
 /[Bb]uild*/

.gitmodules

@@ -3,3 +3,8 @@
 	url = https://github.com/dolphin-emu/ext-win-qt.git
 	branch = master
 	shallow = true
+[submodule "Externals/mGBA/mgba"]
+	path = Externals/mGBA/mgba
+	url = https://github.com/mgba-emu/mgba.git
+	branch = master
+	shallow = true

CMakeLists.txt

@@ -45,6 +45,7 @@ option(ENABLE_LLVM "Enables LLVM support, for disassembly" ON)
 option(ENABLE_TESTS "Enables building the unit tests" ON)
 option(ENABLE_VULKAN "Enables vulkan video backend" ON)
 option(USE_DISCORD_PRESENCE "Enables Discord Rich Presence, show the current game on Discord" ON)
+option(USE_MGBA "Enables GBA controllers emulation using libmgba" ON)
 
 # Maintainers: if you consider blanket disabling this for your users, please
 # consider the following points:
@@ -826,6 +827,14 @@ if(USE_DISCORD_PRESENCE)
   include_directories(Externals/discord-rpc/include)
 endif()
 
+if(NOT ENABLE_QT)
+  set(USE_MGBA 0)
+endif()
+if(USE_MGBA)
+  message(STATUS "Using static libmgba from Externals")
+  add_subdirectory(Externals/mGBA)
+endif()
+
 find_package(SYSTEMD)
 if(SYSTEMD_FOUND)
   message(STATUS "libsystemd found, enabling traversal server watchdog support")

Externals/ExternalsReferenceAll.props

@@ -58,6 +58,9 @@
     <ProjectReference Include="$(ExternalsDir)mbedtls\mbedTLS.vcxproj">
       <Project>{bdb6578b-0691-4e80-a46c-df21639fd3b8}</Project>
     </ProjectReference>
+    <ProjectReference Include="$(ExternalsDir)mGBA\mgba.vcxproj">
+      <Project>{864C4C8E-296D-3DBC-AD83-F1D5CB6E8EC6}</Project>
+    </ProjectReference>
     <ProjectReference Include="$(ExternalsDir)miniupnpc\miniupnpc.vcxproj">
       <Project>{31643fdb-1bb8-4965-9de7-000fc88d35ae}</Project>
     </ProjectReference>

Externals/licenses.md

@@ -38,6 +38,8 @@ Dolphin includes or links code of the following third-party software projects:
    [University of Illinois/NCSA Open Source license](http://llvm.org/docs/DeveloperPolicy.html#license)
 - [LZO](http://www.oberhumer.com/opensource/lzo/):
    [GPLv2+](http://www.oberhumer.com/opensource/gpl.html)
+- [mGBA](http://mgba.io)
+   [MPL 2.0](https://github.com/mgba-emu/mgba/blob/master/LICENSE)
 - [MiniUPnPc](http://miniupnp.free.fr/):
    [3-clause BSD](https://github.com/miniupnp/miniupnp/blob/master/miniupnpc/LICENSE)
 - [Microsoft Visual C++ Runtime Library](http://www.microsoft.com/en-us/download/details.aspx?id=40784):

Externals/mGBA/CMakeLists.txt

@@ -0,0 +1,13 @@
+set(LIBMGBA_ONLY ON)
+set(USE_LZMA ON)
+add_subdirectory(mgba EXCLUDE_FROM_ALL)
+
+if(NOT MSVC)
+  target_compile_options(mgba PRIVATE -Wno-unused-parameter -Wno-unused-result -Wno-unused-variable)
+endif()
+
+if(ANDROID)
+  target_compile_definitions(mgba PRIVATE -Dfutimes=futimens)
+endif()
+
+add_library(mGBA::mgba ALIAS mgba)

Externals/mGBA/make_version.c.js

@@ -0,0 +1,140 @@
+var wshShell		= new ActiveXObject("WScript.Shell")
+var oFS				= new ActiveXObject("Scripting.FileSystemObject");
+
+wshShell.CurrentDirectory   += "\\mgba";
+var outfile                 = "../version.c";
+var cmd_commit              = " describe --always --abbrev=40 --dirty";
+var cmd_commit_short        = " describe --always --dirty";
+var cmd_branch              = " symbolic-ref --short HEAD";
+var cmd_rev                 = " rev-list HEAD --count";
+var cmd_tag                 = " describe --tag --exact-match";
+
+function GetGitExe()
+{
+	try
+	{
+		gitexe = wshShell.RegRead("HKCU\\Software\\GitExtensions\\gitcommand");
+		wshShell.Exec(gitexe);
+		return gitexe;
+	}
+	catch (e)
+	{}
+
+	for (var gitexe in {"git.cmd":1, "git":1, "git.bat":1})
+	{
+		try
+		{
+			wshShell.Exec(gitexe);
+			return gitexe;
+		}
+		catch (e)
+		{}
+	}
+
+	// last try - msysgit not in path (vs2015 default)
+	msyspath = "\\Git\\cmd\\git.exe";
+	gitexe = wshShell.ExpandEnvironmentStrings("%PROGRAMFILES(x86)%") + msyspath;
+	if (oFS.FileExists(gitexe)) {
+		return gitexe;
+	}
+	gitexe = wshShell.ExpandEnvironmentStrings("%PROGRAMFILES%") + msyspath;
+	if (oFS.FileExists(gitexe)) {
+		return gitexe;
+	}
+
+	WScript.Echo("Cannot find git or git.cmd, check your PATH:\n" +
+		wshShell.ExpandEnvironmentStrings("%PATH%"));
+	WScript.Quit(1);
+}
+
+function GetFirstStdOutLine(cmd)
+{
+	try
+	{
+		return wshShell.Exec(cmd).StdOut.ReadLine();
+	}
+	catch (e)
+	{
+		// catch "the system cannot find the file specified" error
+		WScript.Echo("Failed to exec " + cmd + " this should never happen");
+		WScript.Quit(1);
+	}
+}
+
+function GetFileContents(f)
+{
+	try
+	{
+		return oFS.OpenTextFile(f).ReadAll();
+	}
+	catch (e)
+	{
+		// file doesn't exist
+		return "";
+	}
+}
+
+// get version from version.cmake
+var version_cmake   = GetFileContents("version.cmake");
+var version_major   = version_cmake.match(/set\(LIB_VERSION_MAJOR (.*)\)/)[1];
+var version_minor   = version_cmake.match(/set\(LIB_VERSION_MINOR (.*)\)/)[1];
+var version_patch   = version_cmake.match(/set\(LIB_VERSION_PATCH (.*)\)/)[1];
+var version_abi     = version_cmake.match(/set\(LIB_VERSION_ABI (.*)\)/)[1];
+var version_string  = version_major + "." + version_minor + "." + version_patch;
+
+// get info from git
+var gitexe = GetGitExe();
+var commit      	= GetFirstStdOutLine(gitexe + cmd_commit);
+var commit_short    = GetFirstStdOutLine(gitexe + cmd_commit_short);
+var branch  		= GetFirstStdOutLine(gitexe + cmd_branch);
+var rev	        	= GetFirstStdOutLine(gitexe + cmd_rev);
+var tag 	    	= GetFirstStdOutLine(gitexe + cmd_tag);
+var binary_name     = "mgba";
+var project_name    = "mGBA";
+
+if (!rev)
+    rev = -1;
+
+if (tag)
+{
+	version_string = tag;
+}
+else if (branch)
+{
+	if (branch == "master")
+		version_string = rev + "-" + commit_short;
+	else
+		version_string = branch + "-" + rev + "-" + commit_short;
+
+	if (branch != version_abi)
+        version_string = version_abi + "-" + version_string;
+}
+
+if (!commit)
+	commit = "(unknown)";
+if (!commit_short)
+	commit_short = "(unknown)";
+if (!branch)
+	branch = "(unknown)";
+
+var out_contents =
+    "#include <mgba/core/version.h>\n" +
+    "MGBA_EXPORT const char* const gitCommit = \"" + commit + "\";\n" +
+    "MGBA_EXPORT const char* const gitCommitShort = \"" + commit_short + "\";\n" +
+    "MGBA_EXPORT const char* const gitBranch = \"" + branch + "\";\n" +
+    "MGBA_EXPORT const int gitRevision = " + rev + ";\n" +
+    "MGBA_EXPORT const char* const binaryName = \"" + binary_name + "\";\n" +
+    "MGBA_EXPORT const char* const projectName = \"" + project_name + "\";\n" +
+    "MGBA_EXPORT const char* const projectVersion = \"" + version_string + "\";\n";
+
+// check if file needs updating
+if (out_contents == GetFileContents(outfile))
+{
+	WScript.Echo(project_name + ": " + outfile + " current at " + version_string);
+}
+else
+{
+	// needs updating - writeout current info
+	oFS.CreateTextFile(outfile, true).Write(out_contents);
+	WScript.Echo(project_name + ": " + outfile + " updated to " + version_string);
+}