LaunchAPPL: improve detection for classic/carbon

LaunchAPPL/CMakeLists.txt

@@ -9,9 +9,7 @@ if(APPLE)
 	LIST(APPEND LAUNCHMETHODS
 		Classic.h Classic.cc
 		)
-	find_program(LAUNCHCFMAPP LaunchCFMApp)
 	if(LAUNCHCFMAPP)
-		add_definitions(-DHAS_LAUNCHCFMAPP)
 		LIST(APPEND LAUNCHMETHODS
 			Carbon.h Carbon.cc)
 	endif()

LaunchAPPL/Carbon.cc

@@ -1,6 +1,9 @@
 #include "Carbon.h"
 #include "Launcher.h"
 
+const std::string launchCFM =
+	"/System/Library/Frameworks/Carbon.framework/Versions/A/Support/LaunchCFMApp";
+
 namespace po = boost::program_options;
 
 class CarbonLauncher : public Launcher
@@ -26,7 +29,15 @@ CarbonLauncher::~CarbonLauncher()
 
 bool CarbonLauncher::Go(int timeout)
 {
-	return ChildProcess("LaunchCarbon", { appPath.string() }, timeout) == 0;
+	return ChildProcess(launchCFM, { appPath.string() }, timeout) == 0;
+}
+
+bool Carbon::CheckPlatform()
+{
+	/* If LaunchCFMApp doesn't exist, we're likely on a Mac OS X version
+	  where it doesn't exist anymore (10.7 Lion or later),
+	  or on an entirely different platform. */
+	return CheckExecutable(launchCFM);
 }
 
 std::unique_ptr<Launcher> Carbon::MakeLauncher(variables_map &options)

LaunchAPPL/Carbon.h

@@ -8,6 +8,7 @@ class Carbon : public LaunchMethod
 public:
 	virtual std::string GetName() { return "carbon"; }
 
+	virtual bool CheckPlatform();
 	virtual std::unique_ptr<Launcher> MakeLauncher(variables_map& options);
 };
 

LaunchAPPL/Classic.cc

@@ -1,9 +1,11 @@
-#if defined(__APPLE__) && defined(__powerpc)
+#define ResType MacResType
+#include <ApplicationServices/ApplicationServices.h>
+#undef ResType
+
+#if TARGET_CPU_PPC
 #include "Classic.h"
 #include "Launcher.h"
 
-#define ResType MacResType
-#include <ApplicationServices/ApplicationServices.h>
 
 namespace po = boost::program_options;
 
@@ -63,6 +65,16 @@ bool ClassicLauncher::Go(int timeout)
 	return false;
 }
 
+bool Classic::CheckPlatform()
+{
+	long sysver = 0;
+	Gestalt(gestaltSystemVersion, &sysver);
+	if(sysver >= 0x1050)
+		return false;
+	else
+		return true;
+}
+
 std::unique_ptr<Launcher> Classic::MakeLauncher(variables_map &options)
 {
 	return std::unique_ptr<Launcher>(new ClassicLauncher(options));

LaunchAPPL/Classic.h

@@ -8,6 +8,7 @@ class Classic : public LaunchMethod
 public:
 	virtual std::string GetName() { return "classic"; }
 
+	virtual bool CheckPlatform();
 	virtual std::unique_ptr<Launcher> MakeLauncher(variables_map& options);
 };
 

LaunchAPPL/LaunchAPPL.cc

@@ -8,10 +8,13 @@
 #include "LaunchMethod.h"
 #include "Launcher.h"
 
-#if defined(__APPLE__) && defined(__powerpc)
+#if defined(__APPLE__)
+#	define ResType MacResType
+#	include <ApplicationServices/ApplicationServices.h>
+#	undef ResType
+#	if TARGET_CPU_PPC
 #		include "Classic.h"
-#endif
-#ifdef HAS_LAUNCHCFMAPP
+#	endif
 #	include "Carbon.h"
 #endif
 #include "Executor.h"
@@ -30,16 +33,22 @@ static vector<LaunchMethod*> launchMethods;
 
 static void RegisterLaunchMethods()
 {
-	launchMethods = {
-#if defined(__APPLE__) && defined(__powerpc)
+	vector<LaunchMethod*> methods = {
+#if defined(__APPLE__)
+#	if TARGET_CPU_PPC
 		new Classic(),
-#endif
-#ifdef HAS_LAUNCHCFMAPP
+#	endif
 		new Carbon(),
 #endif
 		new Executor(), new MiniVMac()
 		// #### Add new `LaunchMethod`s here.
 	};
+	
+	for(LaunchMethod *m : methods)
+	{
+		if(m->CheckPlatform())
+			launchMethods.push_back(m);
+	}
 }
 
 static void usage()

LaunchAPPL/LaunchMethod.cc

@@ -18,6 +18,11 @@ void LaunchMethod::GetOptions(boost::program_options::options_description &desc)
 {
 }
 
+bool LaunchMethod::CheckPlatform()
+{
+	return true;
+}
+
 bool LaunchMethod::CheckOptions(boost::program_options::variables_map &options)
 {
 	return true;

LaunchAPPL/LaunchMethod.h

@@ -20,6 +20,8 @@ public:
 
 	virtual std::string GetName() = 0;
 	virtual void GetOptions(options_description& desc);
+
+	virtual bool CheckPlatform();
 	virtual bool CheckOptions(variables_map& options);
 
 	virtual std::unique_ptr<Launcher> MakeLauncher(variables_map& options) = 0;