diff --git a/sources/CMakeLists.txt b/sources/CMakeLists.txt
index 3dff825..e1ffd48 100644
--- a/sources/CMakeLists.txt
+++ b/sources/CMakeLists.txt
@@ -64,6 +64,13 @@ set(src_files
 add_definitions( -DDEBUG_LEVEL=3 )
 add_definitions( -DDEBUG=1 )
 add_definitions( -DPROJECT_NAME="edn" )
+if (APPLE)
+	add_definitions( -D__TARGET_OS__MacOs )
+elseif (UNIX)
+	add_definitions( -D__TARGET_OS__Linux )
+elseif (WIN32)
+	add_definitions( -D__TARGET_OS__Windows )
+endif ()
 # read version :
 file (STRINGS "tag" BUILD_VERSION)
 add_definitions( -DAPPL_VERSION="${BUILD_VERSION}" )
@@ -86,7 +93,18 @@ include_directories(${ewol_SOURCE_DIR})
 
 #target_link_libraries(edn ewol)
 target_link_libraries(edn ewol linearmath zlib etk freetype exml ejson egami edtaa3 date esvg png)
+
+if (APPLE)
+	target_link_libraries(edn
+		"-framework Cocoa"
+		"-framework OpenGL"
+		"-framework QuartzCore"
+		"-framework AppKit"
+	)
+elseif (UNIX)
 target_link_libraries(edn -lGL -lX11 -lpthread)
+elseif (WIN32)
+
+endif ()
 
-add_definitions( -D__TARGET_OS__Linux )
 
diff --git a/sources/appl/Buffer.cpp b/sources/appl/Buffer.cpp
index c749a34..b62a21a 100644
--- a/sources/appl/Buffer.cpp
+++ b/sources/appl/Buffer.cpp
@@ -619,8 +619,6 @@ bool appl::Buffer::copy(std::string& _data) {
 
 void appl::Buffer::copy(std::string& _data, const appl::Buffer::Iterator& _pos, const appl::Buffer::Iterator& _posEnd) {
 	_data.clear();
-	int64_t startPos = getStartSelectionPos();
-	int64_t endPos = getStopSelectionPos();
 	for (Iterator it = _pos;
 	     it != _posEnd &&
 	     (bool)it == true;
diff --git a/sources/appl/Gui/MainWindows.cpp b/sources/appl/Gui/MainWindows.cpp
index 85a4389..492acf5 100644
--- a/sources/appl/Gui/MainWindows.cpp
+++ b/sources/appl/Gui/MainWindows.cpp
@@ -395,22 +395,22 @@ void MainWindows::onReceiveMessage(const ewol::object::Message& _msg) {
 	} else if (_msg.getMessage() == ednMsgGuiSave) {
 		APPL_DEBUG("Request saving the file : " << _msg.getData());
 		if (std::tolower(_msg.getData()) == "current") {
-			appl::WorkerSaveFile* tmpWorker = new appl::WorkerSaveFile("", false);
+			new appl::WorkerSaveFile("", false);
 			return;
 		} else if (std::tolower(_msg.getData()) == "all") {
-			appl::WorkerSaveAllFile* tmpWorker = new appl::WorkerSaveAllFile();
+			new appl::WorkerSaveAllFile();
 			return;
 		} else {
 			APPL_ERROR("UNKNOW request : " << _msg);
 		}
 	} else if (_msg.getMessage() == ednMsgGuiSaveAs) {
-		appl::WorkerSaveFile* tmpWorker = new appl::WorkerSaveFile("", true);
+		new appl::WorkerSaveFile("", true);
 	} else if (_msg.getMessage() == ednMsgGuiClose) {
 		// Get a ref on the buffer selected (if null, no buffer was selected ...)
 		if (_msg.getData() == "current") {
-			appl::WorkerCloseFile* tmpWorker = new appl::WorkerCloseFile("");
+			new appl::WorkerCloseFile("");
 		} else {
-			appl::WorkerCloseAllFile* tmpWorker = new appl::WorkerCloseAllFile();
+			new appl::WorkerCloseAllFile();
 		}
 	} else if (_msg.getMessage() == mainWindowsRequestSaveFile) { // return after a choice of close...
 		if (m_bufferManager->exist(_msg.getData()) == false) {
diff --git a/sources/appl/Gui/MainWindows.h b/sources/appl/Gui/MainWindows.h
index 9105855..baca2cb 100644
--- a/sources/appl/Gui/MainWindows.h
+++ b/sources/appl/Gui/MainWindows.h
@@ -19,7 +19,6 @@
 
 class MainWindows : public ewol::widget::Windows {
 	private:
-		int32_t m_currentSavingAsIdBuffer;
 		ewol::widget::Label* m_widgetLabelFileName;
 	public:
 		// Constructeur
diff --git a/sources/appl/Gui/TagFileSelection.cpp b/sources/appl/Gui/TagFileSelection.cpp
index 17e4c23..0e488ba 100644
--- a/sources/appl/Gui/TagFileSelection.cpp
+++ b/sources/appl/Gui/TagFileSelection.cpp
@@ -36,12 +36,8 @@ appl::TagFileSelection::TagFileSelection(void) {
 	addEventId(applEventctagsCancel);
 	
 	ewol::widget::Label* myWidgetTitle = NULL;
-	ewol::widget::Button* myWidgetValidate = NULL;
-	ewol::widget::Button* myWidgetCancel = NULL;
 	
 	ewol::widget::Sizer * mySizerVert = NULL;
-	ewol::widget::Sizer * mySizerHori = NULL;
-	ewol::widget::Spacer * mySpacer = NULL;
 	#if defined(__TARGET_OS__Android)
 		setMinSize(ewol::Dimension(vec2(90,90),ewol::Dimension::Pourcent));
 	#elif defined(__TARGET_OS__Windows)
diff --git a/sources/appl/Gui/TextViewer.cpp b/sources/appl/Gui/TextViewer.cpp
index 09bfeb3..cc1441b 100644
--- a/sources/appl/Gui/TextViewer.cpp
+++ b/sources/appl/Gui/TextViewer.cpp
@@ -129,14 +129,11 @@ void appl::TextViewer::onRegenerateDisplay(void) {
 	vec3 tmpCursorPosition(0, 0, -1);
 	float tmpCursorLenght = -1.0;
 	// real display ...
-	etk::Buffer& buf = m_buffer->getData();
 	m_displayText.setColor(etk::Color<>(0, 0, 0, 256));
 	float countNbLine = 1;
 	int32_t countColomn = 0;
 	// the siplay string :
 	std::u32string stringToDisplay;
-	int64_t bufferElementSize = 0;
-	bool isSelect = false;
 	appl::Buffer::Iterator selectPosStart = m_buffer->begin();
 	appl::Buffer::Iterator selectPosStop = m_buffer->begin();
 	if (m_buffer->hasTextSelected() == true) {
@@ -352,7 +349,6 @@ bool appl::TextViewer::onEventEntry(const ewol::event::Entry& _event) {
 		m_buffer->setSelectMode(false);
 		// normal adding char ...
 		char output[5];
-		int32_t nbElement = u32char::convertUtf8(localValue, output);
 		if (    m_buffer->hasTextSelected() == false
 		     && _event.getSpecialKey().getInsert() == true) {
 			appl::Buffer::Iterator pos = m_buffer->cursor();
@@ -368,7 +364,6 @@ bool appl::TextViewer::onEventEntry(const ewol::event::Entry& _event) {
 	}
 	// move events ...
 	if (_event.getStatus() == ewol::key::statusDown) {
-		bool needUpdatePosition = true;
 		// selection when shift is set:
 		m_buffer->setSelectMode(_event.getSpecialKey().getShift());
 		// check selection event ...
diff --git a/sources/appl/Highlight.cpp b/sources/appl/Highlight.cpp
index 0797e72..9410c12 100644
--- a/sources/appl/Highlight.cpp
+++ b/sources/appl/Highlight.cpp
@@ -100,7 +100,6 @@ appl::Highlight::Highlight(const std::string& _xmlFilename, const std::string& _
 }
 
 appl::Highlight::~Highlight(void) {
-	int32_t i;
 	// clean all Element
 	for (int32_t iii = 0; iii < m_listHighlightPass1.size(); ++iii) {
 		if (m_listHighlightPass1[iii] != NULL) {