[ros-diffs] [chorns] 14727: Autodetect compiler

[chorns at svn.reactos.com]

Autodetect compiler
Modified:
branches/xmlbuildsystem/reactos/tools/rbuild/backend/mingw/mingw.cpp
Modified:
branches/xmlbuildsystem/reactos/tools/rbuild/backend/mingw/mingw.h
  _____  

Modified:
branches/xmlbuildsystem/reactos/tools/rbuild/backend/mingw/mingw.cpp
--- branches/xmlbuildsystem/reactos/tools/rbuild/backend/mingw/mingw.cpp
2005-04-21 09:33:23 UTC (rev 14726)
+++ branches/xmlbuildsystem/reactos/tools/rbuild/backend/mingw/mingw.cpp
2005-04-21 09:38:45 UTC (rev 14727)
@@ -41,6 +41,18 @@

 }
 
 
+/* static */ string
+Environment::GetVariable ( const string& name )
+{
+	char* value = getenv ( name.c_str () );
+	if ( value != NULL && strlen ( value ) > 0 )
+		return ssprintf ( "%s",
+		                  value );
+	else
+		return "";
+}
+
+
 Directory::Directory ( const string& name_ )
 	: name(name_)
 {
@@ -120,21 +132,10 @@
 }
 
 string
-Directory::GetEnvironmentVariable ( const string& name )
-{
-	char* value = getenv ( name.c_str () );
-	if ( value != NULL && strlen ( value ) > 0 )
-		return ssprintf ( "%s",
-		                  value );
-	else
-		return "";
-}
-
-string
 Directory::GetEnvironmentVariablePathOrDefault ( const string& name,
 	                                             const string&
defaultValue )
 {
-	const string& environmentVariableValue = GetEnvironmentVariable
( name );
+	const string& environmentVariableValue =
Environment::GetVariable ( name );
 	if ( environmentVariableValue.length () > 0 )
 		return NormalizeFilename ( environmentVariableValue );
 	else
@@ -283,6 +284,7 @@
 void
 MingwBackend::Process ()
 {
+	DetectCompiler ();
 	DetectPipeSupport ();
 	DetectPCHSupport ();
 	CreateMakefile ();
@@ -556,7 +558,46 @@
 	printf ( "done\n" );
 }
 
+bool
+MingwBackend::TryToDetectThisCompiler ( const string& compiler )
+{
+	string command = ssprintf (
+		"%s -v 2>%s",
+		compiler.c_str (),
+		NUL );
+	int exitcode = system ( command.c_str () );
+	return (exitcode == 0);
+}
+
 void
+MingwBackend::DetectCompiler ()
+{
+	printf ( "Detecting compiler..." );
+
+	bool detectedCompiler = false;
+	const string& ROS_PREFIXValue = Environment::GetVariable (
"ROS_PREFIX" );
+	if ( ROS_PREFIXValue.length () > 0 )
+	{
+		compilerCommand = ROS_PREFIXValue + "-gcc";
+		detectedCompiler = TryToDetectThisCompiler (
compilerCommand );
+	}
+	if ( !detectedCompiler )
+	{
+		compilerCommand = "gcc";
+		detectedCompiler = TryToDetectThisCompiler (
compilerCommand );
+	}
+	if ( !detectedCompiler )
+	{
+		compilerCommand = "mingw32-gcc";
+		detectedCompiler = TryToDetectThisCompiler (
compilerCommand );
+	}
+	if ( detectedCompiler )
+		printf ( "detected (%s)\n", compilerCommand.c_str () );
+	else
+		printf ( "not detected\n" );
+}
+
+void
 MingwBackend::DetectPipeSupport ()
 {
 	printf ( "Detecting compiler -pipe support..." );
@@ -565,7 +606,8 @@
 	string pipe_detectionObjectFilename = ReplaceExtension (
pipe_detection,
 	                                                         ".o" );
 	string command = ssprintf (
-		"gcc -pipe -c %s -o %s 2>%s",
+		"%s -pipe -c %s -o %s 2>%s",
+		compilerCommand.c_str (),
 		pipe_detection.c_str (),
 		pipe_detectionObjectFilename.c_str (),
 		NUL );
@@ -593,7 +635,8 @@
 
 	string path = "tools" SSEP "rbuild" SSEP "backend" SSEP "mingw"
SSEP "pch_detection.h";
 	string cmd = ssprintf (
-		"gcc -c %s 2>%s",
+		"%s -c %s 2>%s",
+		compilerCommand.c_str (),
 		path.c_str (),
 		NUL );
 	system ( cmd.c_str () );
  _____  

Modified:
branches/xmlbuildsystem/reactos/tools/rbuild/backend/mingw/mingw.h
--- branches/xmlbuildsystem/reactos/tools/rbuild/backend/mingw/mingw.h
2005-04-21 09:33:23 UTC (rev 14726)
+++ branches/xmlbuildsystem/reactos/tools/rbuild/backend/mingw/mingw.h
2005-04-21 09:38:45 UTC (rev 14727)
@@ -17,6 +17,14 @@

 
 typedef std::map<std::string,Directory*> directory_map;
 
+
+class Environment
+{
+public:
+	static std::string GetVariable ( const std::string& name );
+};
+
+
 class Directory
 {
 public:
@@ -51,6 +59,7 @@
 	virtual void Process ();
 	std::string AddDirectoryTarget ( const std::string& directory,
 	                                 Directory* directoryTree );
+	std::string compilerCommand;
 	bool usePipe;
 	Directory* intermediateDirectory;
 	Directory* outputDirectory;
@@ -73,6 +82,8 @@
 	void GenerateXmlBuildFilesMacro() const;
 	void CheckAutomaticDependencies ();
 	bool IncludeDirectoryTarget ( const std::string& directory )
const;
+	bool TryToDetectThisCompiler ( const std::string& compiler );
+	void DetectCompiler ();
 	void DetectPipeSupport ();
 	void DetectPCHSupport ();
 	void ProcessModules ();
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