diff --git a/DSView/CMakeLists.txt b/DSView/CMakeLists.txt
index 554952fa..9d430c3e 100755
--- a/DSView/CMakeLists.txt
+++ b/DSView/CMakeLists.txt
@@ -26,6 +26,14 @@ include(GNUInstallDirs)
 
 set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/CMake")
 
+#SET(CMAKE_C_FLAGS_RELEASE "-g -DNDEBUG -O3")
+#SET(CMAKE_CXX_FLAGS_RELEASE "-g -DNDEBUG -O3")
+
+set(CMAKE_CXX_FLAGS "-Wall -Wextra")
+set(CMAKE_BUILD_TYPE Release)
+set(CMAKE_CXX_FLAGS_DEBUG "-g")
+set(CMAKE_CXX_FLAGS_RELEASE "-O3")
+
 project(DSView)
 
 #===============================================================================
@@ -95,9 +103,11 @@ find_package(Threads)
 find_package(PythonLibs 3 EXACT)
 find_package(Boost 1.42 COMPONENTS filesystem system thread REQUIRED)
 find_package(libusb-1.0 REQUIRED)
+find_package(ZLIB REQUIRED)
 find_package(libzip REQUIRED)
 find_package(FFTW REQUIRED)
 
+  
 #===============================================================================
 #= Config Header
 #-------------------------------------------------------------------------------
@@ -106,8 +116,8 @@ set(DS_TITLE DSView)
 set(DS_DESCRIPTION "A GUI for instruments of DreamSourceLab")
 
 set(DS_VERSION_MAJOR 1)
-set(DS_VERSION_MINOR 1)
-set(DS_VERSION_MICRO 2)
+set(DS_VERSION_MINOR 2)
+set(DS_VERSION_MICRO 0)
 set(DS_VERSION_STRING
 	${DS_VERSION_MAJOR}.${DS_VERSION_MINOR}.${DS_VERSION_MICRO}
 )
@@ -214,6 +224,21 @@ set(DSView_SOURCES
     pv/dialogs/mathoptions.cpp
     pv/dialogs/regionoptions.cpp
     pv/view/xcursor.cpp
+    pv/config/appconfig.cpp
+    pv/appcontrol.cpp
+    pv/dstimer.cpp
+    pv/eventobject.cpp
+    pv/ZipMaker.cpp
+    pv/data/decode/annotationrestable.cpp
+    pv/data/decode/decoderstatus.cpp
+    pv/dock/protocolitemlayer.cpp
+    pv/ui/msgbox.cpp
+    pv/ui/dscombobox.cpp
+    pv/dsvdef.cpp
+    pv/minizip/zip.c
+    pv/minizip/unzip.c
+    pv/minizip/ioapi.c
+    pv/dialogs/applicationpardlg.cpp
 )
 
 set(DSView_HEADERS
@@ -282,6 +307,21 @@ set(DSView_HEADERS
     pv/view/analogsignal.h
     pv/view/dsosignal.h
     mystyle.h
+    pv/config/appconfig.h
+    pv/appcontrol.h
+    pv/dstimer.h
+    pv/eventobject.h
+    pv/ZipMaker.h
+    pv/data/decode/annotationrestable.h
+    pv/data/decode/decoderstatus.h
+    pv/dock/protocolitemlayer.h
+    pv/ui/msgbox.h
+    pv/ui/dscombobox.h
+    pv/dsvdef.h
+    pv/minizip/zip.h
+    pv/minizip/unzip.h
+    pv/minizip/ioapi.h
+    pv/dialogs/applicationpardlg.h
 )
 
 set(DSView_FORMS
@@ -408,6 +448,8 @@ if(WIN32)
 set_target_properties(${PROJECT_NAME} PROPERTIES LINK_FLAGS "-mwindows")
 endif()
 
+target_link_libraries(DSView -lz)
+
 
 if(ENABLE_COTIRE)
 	include(cotire)
diff --git a/DSView.desktop b/DSView/DSView.desktop
similarity index 100%
rename from DSView.desktop
rename to DSView/DSView.desktop
diff --git a/DSView/cmake_clear b/DSView/cmake_clear
index bd2c87ba..bdbf6674 100755
--- a/DSView/cmake_clear
+++ b/DSView/cmake_clear
@@ -6,7 +6,7 @@ rm ./CMakeCache.txt
 rm ./*.cmake
 rm ./DSView
 rm ./DSView.qrc.depends
-rm ./install_manifest.txt
+#rm ./install_manifest.txt
 find . -name 'moc_*.cpp*' | xargs rm -rf
 find . -name 'qrc_*.cpp' | xargs rm -rf
 echo "rm cmake cache end..."
diff --git a/DSView/config.h b/DSView/config.h
index 067e528a..2636a3a2 100755
--- a/DSView/config.h
+++ b/DSView/config.h
@@ -31,6 +31,4 @@
 #define DS_VERSION_MICRO 0
 #define DS_VERSION_STRING "1.2.0"
 
-#define DS_DEBUG_TRACE
-
 #endif
diff --git a/DSView/pv/appcontrol.cpp b/DSView/pv/appcontrol.cpp
index ab7015c0..56cb67cb 100644
--- a/DSView/pv/appcontrol.cpp
+++ b/DSView/pv/appcontrol.cpp
@@ -92,10 +92,13 @@ bool AppControl::Init()
   
 #endif
     
+    //the python script path of decoder
     char path[256] = {0};
-    QString dir = GetAppDataDir() + "/decoders";   
+    QString dir = GetDecodeScriptDir();   
     strcpy(path, dir.toUtf8().data());
 
+    qDebug()<<"decode script path is:"<<dir;
+
     // Initialise libsigrokdecode
     if (srd_init(path) != SRD_OK)
     {
diff --git a/DSView/pv/config/appconfig.cpp b/DSView/pv/config/appconfig.cpp
index f94c7304..b7185388 100644
--- a/DSView/pv/config/appconfig.cpp
+++ b/DSView/pv/config/appconfig.cpp
@@ -324,11 +324,11 @@ QString GetAppDataDir()
 //applicationDirPath not end with '/'
 #ifdef Q_OS_LINUX
     QDir dir(QCoreApplication::applicationDirPath());
-    if (dir.cd("..") && dir.cd("share") &&dir.cd("DSView"))
+    if (dir.cd("..") && dir.cd("share") && dir.cd("DSView"))
     {
          return dir.absolutePath();        
     }
-    qDebug() << "dir is not exists:" << QCoreApplication::applicationDirPath() + "/../share/DSView";
+    qDebug() << "dir is not exists:" <<"../share/DSView";
     assert(false);   
 #else
     return QCoreApplication::applicationDirPath();
@@ -340,7 +340,7 @@ QString GetResourceDir(){
     if (dir.exists()){
         return dir.absolutePath();
     }
-    qDebug() << "dir is not exists:" << dir.absolutePath();
+    qDebug() << "app data dir is not exists:" << dir.absolutePath();
     assert(false);
 }
 
@@ -352,3 +352,26 @@ QString GetUserDataDir()
     return QStandardPaths::writableLocation(QStandardPaths::DataLocation);
     #endif
 }
+
+QString GetDecodeScriptDir()
+{
+    QString path = GetAppDataDir() + "/decoders";
+
+    #ifdef Q_OS_LINUX
+    QDir dir1;
+    // ../share/DSView/decoders
+    if (dir1.exists(path))
+    {
+         return path;     
+    }  
+
+    QDir dir(QCoreApplication::applicationDirPath());
+    // ../share/libsigrokdecode4DSL/decoders
+    if (dir.cd("..") && dir.cd("share") && dir.cd("libsigrokdecode4DSL") && dir.cd("decoders"))
+    {
+         return dir.absolutePath();        
+    } 
+#endif
+
+ return path;
+}
diff --git a/DSView/pv/config/appconfig.h b/DSView/pv/config/appconfig.h
index 176180fd..498df140 100644
--- a/DSView/pv/config/appconfig.h
+++ b/DSView/pv/config/appconfig.h
@@ -37,6 +37,7 @@ QString GetIconPath();
 QString GetAppDataDir();
 QString GetResourceDir();
 QString GetUserDataDir();
+QString GetDecodeScriptDir();
 
 //------------------class
   
diff --git a/DreamSourceLab.rules b/DreamSourceLab.rules
deleted file mode 100755
index 05f68bad..00000000
--- a/DreamSourceLab.rules
+++ /dev/null
@@ -1 +0,0 @@
-SUBSYSTEM=="usb", ATTRS{idVendor}=="2a0e", MODE="0666"
diff --git a/INSTALL b/INSTALL
index 2f388027..ab2074b7 100755
--- a/INSTALL
+++ b/INSTALL
@@ -26,7 +26,7 @@ Requirements
 	This is part of the standard OpenBSD install (not an extra package), apparently.
  - check >= 0.9.4 (optional, only needed to run unit tests)
  - libfftw3 >= 3.3
- - zlib
+ - zlib (on ubuntu, zlib package name is zlib1g-dev)
 
 Building and installing
 -----------------------
diff --git a/libsigrok4DSL/backend.c b/libsigrok4DSL/backend.c
index 98776208..156922f5 100755
--- a/libsigrok4DSL/backend.c
+++ b/libsigrok4DSL/backend.c
@@ -472,7 +472,7 @@ SR_API void sr_hotplug_wait_timout(struct sr_context *ctx)
 {
 	if (!ctx) {
 		sr_err("%s(): libsigrok context was NULL.", __func__);
-		return SR_ERR;
+		return;
 	}
 	 libusb_handle_events_timeout(ctx->libusb_ctx, &ctx->hotplug_tv);
 }
diff --git a/libsigrok4DSL/hardware/DSL/dslogic.c b/libsigrok4DSL/hardware/DSL/dslogic.c
index 345f9db9..66d8ff28 100755
--- a/libsigrok4DSL/hardware/DSL/dslogic.c
+++ b/libsigrok4DSL/hardware/DSL/dslogic.c
@@ -287,8 +287,9 @@ static GSList *scan(GSList *options)
 
     /* Find all DSLogic compatible devices and upload firmware to them. */
 	devices = NULL;
-    int usbnum = libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
+    libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
     int stdnum = 0;
+    
 
 	for (i = 0; devlist[i]; i++) {
 		if (conn) {
diff --git a/libsigrok4DSL/hwdriver.c b/libsigrok4DSL/hwdriver.c
index 5be41d3d..7ce483ac 100755
--- a/libsigrok4DSL/hwdriver.c
+++ b/libsigrok4DSL/hwdriver.c
@@ -481,6 +481,7 @@ SR_PRIV int sr_source_add(int fd, int events, int timeout,
 /*
 test usb device api
 */
+/*
 SR_API void sr_test_usb_api()
 {
     libusb_context *ctx;
@@ -553,3 +554,4 @@ SR_API void sr_test_usb_api()
 
    libusb_exit(NULL);
 }
+*/
diff --git a/libsigrok4DSL/input/in_wav.c b/libsigrok4DSL/input/in_wav.c
index a576aa8a..d99b086b 100755
--- a/libsigrok4DSL/input/in_wav.c
+++ b/libsigrok4DSL/input/in_wav.c
@@ -94,7 +94,7 @@ static int init(struct sr_input *in, const char *filename)
 {
 	struct sr_channel *probe;
 	struct context *ctx;
-	char buf[40], probename[8];
+	char buf[40], probename[15];
 	int i;
 
 	if (get_wav_header(filename, buf) != SR_OK)
@@ -120,7 +120,7 @@ static int init(struct sr_input *in, const char *filename)
 	}
 
 	for (i = 0; i < ctx->num_channels; i++) {
-		snprintf(probename, 8, "CH%d", i + 1);
+		sprintf(probename,"CH%d", i + 1);
 		if (!(probe = sr_channel_new(0, SR_CHANNEL_ANALOG, TRUE, probename)))
 			return SR_ERR;
 		in->sdi->channels = g_slist_append(in->sdi->channels, probe);
diff --git a/libsigrok4DSL/proto.h b/libsigrok4DSL/proto.h
index d7974307..3d500a8f 100755
--- a/libsigrok4DSL/proto.h
+++ b/libsigrok4DSL/proto.h
@@ -88,7 +88,7 @@ SR_API int sr_status_get(const struct sr_dev_inst *sdi, struct sr_status *status
 SR_API struct sr_config *sr_config_new(int key, GVariant *data);
 SR_API void sr_config_free(struct sr_config *src);
 
-SR_API void sr_test_usb_api();
+//SR_API void sr_test_usb_api();
 
 /*--------------------session.c----------------*/
 typedef void (*sr_datafeed_callback_t)(const struct sr_dev_inst *sdi,
diff --git a/libsigrokdecode4DSL/config.h b/libsigrokdecode4DSL/config.h
index 1d480390..4bdef8cd 100644
--- a/libsigrokdecode4DSL/config.h
+++ b/libsigrokdecode4DSL/config.h
@@ -80,7 +80,7 @@
 #define SRD_PACKAGE_VERSION_MINOR 6
 
 /* Version of libsigrokdecode4DSL. */
-#define SRD_PACKAGE_VERSION_STRING "0.6.0-git-c708a00"
+#define SRD_PACKAGE_VERSION_STRING "0.6.0-git-f18df52"
 
 /* Define to 1 if you have the ANSI C header files. */
 #define STDC_HEADERS 1
diff --git a/libsigrokdecode4DSL/version.h b/libsigrokdecode4DSL/version.h
index d131411e..ca4e11d2 100644
--- a/libsigrokdecode4DSL/version.h
+++ b/libsigrokdecode4DSL/version.h
@@ -48,7 +48,7 @@
 #define SRD_PACKAGE_VERSION_MICRO 0
 
 /** The libsigrokdecode package version ("major.minor.micro") as string. */
-#define SRD_PACKAGE_VERSION_STRING "0.6.0-git-c708a00"
+#define SRD_PACKAGE_VERSION_STRING "0.6.0-git-f18df52"
 
 /*
  * Library/libtool version macros (can be used for conditional compilation).