diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 52b73d7bb..2eae045e0 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -99,7 +99,7 @@ jobs:
         uses: cygwin/cygwin-install-action@master
         with:
           platform: x86_64
-          packages: bash make gcc-g++ cmake automake patch pkg-config tcl
+          packages: bash make gcc-g++ cmake automake patch pkg-config tcl unzip
           install-dir: C:\cygwin64
       ##################################################################################################################
       - name: Checkout repository
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index f1c16c897..56cb97eaa 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -47,7 +47,7 @@ jobs:
         uses: cygwin/cygwin-install-action@master
         with:
           platform: x86_64
-          packages: bash make gcc-g++ cmake automake patch pkg-config tcl
+          packages: bash make gcc-g++ cmake automake patch pkg-config tcl unzip
           install-dir: C:\cygwin64
       ##################################################################################################################
       - name: Checkout repository
diff --git a/.run/private.run.xml b/.run/private.run.xml
index ca5b126cf..458dabc61 100644
--- a/.run/private.run.xml
+++ b/.run/private.run.xml
@@ -2,6 +2,7 @@
   <configuration default="false" name="private" type="CMakeRunConfiguration" factoryName="Application" PROGRAM_PARAMS="-c console.conf" REDIRECT_INPUT="false" ELEVATE="false" USE_EXTERNAL_CONSOLE="false" WORKING_DIR="file://$CMakeCurrentBuildDir$/../../../" PASS_PARENT_ENVS_2="true" PROJECT_NAME="srs" TARGET_NAME="srs" CONFIG_NAME="Debug" RUN_TARGET_PROJECT_NAME="srs" RUN_TARGET_NAME="srs">
     <envs>
       <env name="SRS_RTC_SERVER_ENABLED" value="on" />
+      <env name="MallocNanoZone" value="0" />
     </envs>
     <method v="2">
       <option name="com.jetbrains.cidr.execution.CidrBuildBeforeRunTaskProvider$BuildBeforeRunTask" enabled="true" />
diff --git a/trunk/auto/depends.sh b/trunk/auto/depends.sh
index 093ffec02..6a69e0c0c 100755
--- a/trunk/auto/depends.sh
+++ b/trunk/auto/depends.sh
@@ -11,285 +11,6 @@
 #####################################################################################
 #####################################################################################
 
-#####################################################################################
-# utilities
-#####################################################################################
-function require_sudoer() {
-    sudo echo "" >/dev/null 2>&1
-    
-    ret=$?; if [[ 0 -ne $ret ]]; then 
-        echo "\"$1\" require sudoer failed. ret=$ret";
-        exit $ret; 
-    fi
-}
-
-#####################################################################################
-# for Ubuntu, auto install tools by apt-get
-#####################################################################################
-function Ubuntu_prepare() {
-    if [[ $OS_IS_UBUNTU != YES ]]; then return 0; fi
-    echo "Installing tools for Ubuntu."
-    
-    gcc --help >/dev/null 2>&1; ret=$?; if [[ 0 -ne $ret ]]; then
-        echo "Installing gcc."
-        require_sudoer "sudo apt-get install -y --force-yes gcc"
-        sudo apt-get install -y --force-yes gcc; ret=$?; if [[ 0 -ne $ret ]]; then return $ret; fi
-        echo "The gcc is installed."
-    fi
-    
-    g++ --help >/dev/null 2>&1; ret=$?; if [[ 0 -ne $ret ]]; then
-        echo "Installing g++."
-        require_sudoer "sudo apt-get install -y --force-yes g++"
-        sudo apt-get install -y --force-yes g++; ret=$?; if [[ 0 -ne $ret ]]; then return $ret; fi
-        echo "The g++ is installed."
-    fi
-    
-    make --help >/dev/null 2>&1; ret=$?; if [[ 0 -ne $ret ]]; then
-        echo "Installing make."
-        require_sudoer "sudo apt-get install -y --force-yes make"
-        sudo apt-get install -y --force-yes make; ret=$?; if [[ 0 -ne $ret ]]; then return $ret; fi
-        echo "The make is installed."
-    fi
-    
-    patch --help >/dev/null 2>&1; ret=$?; if [[ 0 -ne $ret ]]; then
-        echo "Installing patch."
-        require_sudoer "sudo apt-get install -y --force-yes patch"
-        sudo apt-get install -y --force-yes patch; ret=$?; if [[ 0 -ne $ret ]]; then return $ret; fi
-        echo "The patch is installed."
-    fi
-    
-    unzip --help >/dev/null 2>&1; ret=$?; if [[ 0 -ne $ret ]]; then
-        echo "Installing unzip."
-        require_sudoer "sudo apt-get install -y --force-yes unzip"
-        sudo apt-get install -y --force-yes unzip; ret=$?; if [[ 0 -ne $ret ]]; then return $ret; fi
-        echo "The unzip is installed."
-    fi
-
-    if [[ $SRS_VALGRIND == YES ]]; then
-        valgrind --help >/dev/null 2>&1; ret=$?; if [[ 0 -ne $ret ]]; then
-            echo "Installing valgrind."
-            require_sudoer "sudo apt-get install -y --force-yes valgrind"
-            sudo apt-get install -y --force-yes valgrind; ret=$?; if [[ 0 -ne $ret ]]; then return $ret; fi
-            echo "The valgrind is installed."
-        fi
-    fi
-
-    if [[ $SRS_VALGRIND == YES ]]; then
-        if [[ ! -f /usr/include/valgrind/valgrind.h ]]; then
-            echo "Installing valgrind-dev."
-            require_sudoer "sudo apt-get install -y --force-yes valgrind-dbg"
-            sudo apt-get install -y --force-yes valgrind-dev; ret=$?; if [[ 0 -ne $ret ]]; then return $ret; fi
-            echo "The valgrind-dev is installed."
-        fi
-    fi
-
-    if [[ $SRS_SRT == YES ]]; then
-        echo "SRT enable, install depend tools"
-        tclsh <<< "exit" >/dev/null 2>&1; ret=$?; if [[ 0 -ne $ret ]]; then
-            echo "Installing tcl."
-            require_sudoer "sudo apt-get install -y --force-yes tcl"
-            sudo apt-get install -y --force-yes tcl; ret=$?; if [[ 0 -ne $ret ]]; then return $ret; fi
-            echo "The tcl is installed."
-        fi
-
-        cmake --help >/dev/null 2>&1; ret=$?; if [[ 0 -ne $ret ]]; then
-            echo "Installing cmake."
-            require_sudoer "sudo apt-get install -y --force-yes cmake"
-            sudo apt-get install -y --force-yes cmake; ret=$?; if [[ 0 -ne $ret ]]; then return $ret; fi
-            echo "The cmake is installed."
-        fi
-    fi
-
-    pkg-config --version >/dev/null 2>&1; ret=$?; if [[ 0 -ne $ret ]]; then
-        echo "Installing pkg-config."
-        require_sudoer "sudo apt-get install -y --force-yes pkg-config"
-        sudo apt-get install -y --force-yes pkg-config; ret=$?; if [[ 0 -ne $ret ]]; then return $ret; fi
-        echo "The pkg-config is installed."
-    fi
-
-    echo "Tools for Ubuntu are installed."
-    return 0
-}
-# donot prepare tools, for srs-librtmp depends only gcc and g++.
-Ubuntu_prepare; ret=$?; if [[ 0 -ne $ret ]]; then echo "Install tools for ubuntu failed, ret=$ret"; exit $ret; fi
-
-#####################################################################################
-# for Centos, auto install tools by yum
-#####################################################################################
-function Centos_prepare() {
-    if [[ $OS_IS_CENTOS != YES ]]; then return 0; fi
-    echo "Installing tools for Centos."
-    
-    gcc --help >/dev/null 2>&1; ret=$?; if [[ 0 -ne $ret ]]; then
-        echo "Installing gcc."
-        require_sudoer "sudo yum install -y gcc"
-        sudo yum install -y gcc; ret=$?; if [[ 0 -ne $ret ]]; then return $ret; fi
-        echo "The gcc is installed."
-    fi
-    
-    g++ --help >/dev/null 2>&1; ret=$?; if [[ 0 -ne $ret ]]; then
-        echo "Installing gcc-c++."
-        require_sudoer "sudo yum install -y gcc-c++"
-        sudo yum install -y gcc-c++; ret=$?; if [[ 0 -ne $ret ]]; then return $ret; fi
-        echo "The gcc-c++ is installed."
-    fi
-    
-    make --help >/dev/null 2>&1; ret=$?; if [[ 0 -ne $ret ]]; then
-        echo "Installing make."
-        require_sudoer "sudo yum install -y make"
-        sudo yum install -y make; ret=$?; if [[ 0 -ne $ret ]]; then return $ret; fi
-        echo "The make is installed."
-    fi
-    
-    patch --help >/dev/null 2>&1; ret=$?; if [[ 0 -ne $ret ]]; then
-        echo "Installing patch."
-        require_sudoer "sudo yum install -y patch"
-        sudo yum install -y patch; ret=$?; if [[ 0 -ne $ret ]]; then return $ret; fi
-        echo "The patch is installed."
-    fi
-    
-    unzip --help >/dev/null 2>&1; ret=$?; if [[ 0 -ne $ret ]]; then
-        echo "Installing unzip."
-        require_sudoer "sudo yum install -y unzip"
-        sudo yum install -y unzip; ret=$?; if [[ 0 -ne $ret ]]; then return $ret; fi
-        echo "The unzip is installed."
-    fi
-
-    if [[ $SRS_VALGRIND == YES ]]; then
-        valgrind --help >/dev/null 2>&1; ret=$?; if [[ 0 -ne $ret ]]; then
-            echo "Installing valgrind."
-            require_sudoer "sudo yum install -y valgrind"
-            sudo yum install -y valgrind; ret=$?; if [[ 0 -ne $ret ]]; then return $ret; fi
-            echo "The valgrind is installed."
-        fi
-    fi
-
-    if [[ $SRS_VALGRIND == YES ]]; then
-        if [[ ! -f /usr/include/valgrind/valgrind.h ]]; then
-            echo "Installing valgrind-devel."
-            require_sudoer "sudo yum install -y valgrind-devel"
-            sudo yum install -y valgrind-devel; ret=$?; if [[ 0 -ne $ret ]]; then return $ret; fi
-            echo "The valgrind-devel is installed."
-        fi
-    fi
-
-    if [[ $SRS_SRT == YES ]]; then
-        echo "SRT enable, install depend tools"
-        tclsh <<< "exit" >/dev/null 2>&1; ret=$?; if [[ 0 -ne $ret ]]; then
-            echo "Installing tcl."
-            require_sudoer "sudo yum install -y tcl"
-            sudo yum install -y tcl; ret=$?; if [[ 0 -ne $ret ]]; then return $ret; fi
-            echo "The tcl is installed."
-        fi
-
-        cmake --help >/dev/null 2>&1; ret=$?; if [[ 0 -ne $ret ]]; then
-            echo "Installing cmake."
-            require_sudoer "sudo  yum install -y cmake"
-            sudo yum install -y cmake; ret=$?; if [[ 0 -ne $ret ]]; then return $ret; fi
-            echo "The cmake is installed."
-        fi
-    fi
-
-    pkg-config --version --help >/dev/null 2>&1; ret=$?; if [[ 0 -ne $ret ]]; then
-        echo "Please install pkg-config"; exit -1;
-    fi
-    
-    echo "Tools for Centos are installed."
-    return 0
-}
-# donot prepare tools, for srs-librtmp depends only gcc and g++.
-Centos_prepare; ret=$?; if [[ 0 -ne $ret ]]; then echo "Install tools for CentOS failed, ret=$ret"; exit $ret; fi
-
-#####################################################################################
-# For OSX, auto install tools by brew
-#####################################################################################
-function OSX_prepare() {
-    if [[ $OS_IS_OSX != YES ]]; then
-        if [[ $SRS_OSX == YES ]]; then echo "OSX check failed, actual is `uname -s`"; exit 1; fi
-        return 0
-    fi
-
-    # cross build for arm, install the cross build tool chain.
-    if [[ $SRS_CROSS_BUILD == YES ]]; then
-        echo "The embeded(arm/mips) is invalid for OSX"
-        return 1
-    fi
-
-    # Requires the osx when darwin detected
-    if [[ $OS_IS_OSX == YES && $SRS_OSX != YES ]]; then
-        echo "OSX detected, please use: ./configure --osx"
-        exit 1
-    fi
-
-    echo "OSX detected, install tools if needed"
-
-    brew --version >/dev/null 2>&1; ret=$?; if [[ 0 -ne $ret ]]; then
-        echo "Please install brew at https://brew.sh/"
-        exit $ret
-    fi
-
-    gcc --help >/dev/null 2>&1; ret=$?; if [[ 0 -ne $ret ]]; then
-        echo "install gcc"
-        echo "brew install gcc"
-        brew install gcc; ret=$?; if [[ 0 -ne $ret ]]; then return $ret; fi
-        echo "install gcc success"
-    fi
-
-    g++ --help >/dev/null 2>&1; ret=$?; if [[ 0 -ne $ret ]]; then
-        echo "install gcc-c++"
-        echo "brew install gcc-c++"
-        brew install gcc-c++; ret=$?; if [[ 0 -ne $ret ]]; then return $ret; fi
-        echo "install gcc-c++ success"
-    fi
-
-    make --help >/dev/null 2>&1; ret=$?; if [[ 0 -ne $ret ]]; then
-        echo "install make"
-        echo "brew install make"
-        brew install make; ret=$?; if [[ 0 -ne $ret ]]; then return $ret; fi
-        echo "install make success"
-    fi
-
-    patch --help >/dev/null 2>&1; ret=$?; if [[ 0 -ne $ret ]]; then
-        echo "install patch"
-        echo "brew install patch"
-        brew install patch; ret=$?; if [[ 0 -ne $ret ]]; then return $ret; fi
-        echo "install patch success"
-    fi
-
-    unzip --help >/dev/null 2>&1; ret=$?; if [[ 0 -ne $ret ]]; then
-        echo "install unzip"
-        echo "brew install unzip"
-        brew install unzip; ret=$?; if [[ 0 -ne $ret ]]; then return $ret; fi
-        echo "install unzip success"
-    fi
-
-    pkg-config --version >/dev/null 2>&1; ret=$?; if [[ 0 -ne $ret ]]; then
-        echo "Please install pkg-config"; exit -1;
-    fi
-
-    if [[ $SRS_SRT == YES ]]; then
-        echo "SRT enable, install depend tools"
-        tclsh <<< "exit" >/dev/null 2>&1; ret=$?; if [[ 0 -ne $ret ]]; then
-            echo "Installing tcl."
-            echo "brew install tcl."
-            brew install tcl; ret=$?; if [[ 0 -ne $ret ]]; then return $ret; fi
-            echo "install tcl success"
-        fi
-
-        cmake --help >/dev/null 2>&1; ret=$?; if [[ 0 -ne $ret ]]; then
-            echo "Installing cmake."
-            echo "brew install cmake."
-            brew install cmake; ret=$?; if [[ 0 -ne $ret ]]; then return $ret; fi
-            echo "install cmake success"
-        fi
-    fi
-
-    echo "OSX install tools success"
-    return 0
-}
-# donot prepare tools, for srs-librtmp depends only gcc and g++.
-OSX_prepare; ret=$?; if [[ 0 -ne $ret ]]; then echo "OSX prepare failed, ret=$ret"; exit $ret; fi
-
 #####################################################################################
 # Check OS and CPU architectures.
 #####################################################################################
@@ -314,6 +35,55 @@ if [[ ! -z $OS_IS_X86_64 ]]; then echo -n ", OS_IS_X86_64: $OS_IS_X86_64"; fi
 if [[ ! -z $OS_IS_RISCV ]]; then echo -n ", OS_IS_RISCV: $OS_IS_RISCV"; fi
 echo ""
 
+#####################################################################################
+# Check dependency tools.
+#####################################################################################
+if [[ $SRS_OSX == YES ]]; then
+    brew --version >/dev/null 2>/dev/null; ret=$?; if [[ 0 -ne $ret ]]; then
+        echo "Please install brew at https://brew.sh/"; exit $ret;
+    fi
+fi
+# Check perl, which is depended by automake for building libopus etc.
+perl --version >/dev/null 2>/dev/null; ret=$?; if [[ 0 -ne $ret ]]; then
+    echo "Please install perl"; exit $ret;
+fi
+gcc --version >/dev/null 2>/dev/null; ret=$?; if [[ 0 -ne $ret ]]; then
+    echo "Please install gcc"; exit $ret;
+fi
+g++ --version >/dev/null 2>/dev/null; ret=$?; if [[ 0 -ne $ret ]]; then
+    if [[ $OS_IS_UBUNTU == YES ]]; then echo "Please install g++"; else echo "Please install gcc-c++"; fi
+    exit $ret;
+fi
+make --version >/dev/null 2>/dev/null; ret=$?; if [[ 0 -ne $ret ]]; then
+    echo "Please install make"; exit $ret;
+fi
+patch --version >/dev/null 2>/dev/null; ret=$?; if [[ 0 -ne $ret ]]; then
+    echo "Please install patch"; exit $ret;
+fi
+unzip -v >/dev/null 2>/dev/null; ret=$?; if [[ 0 -ne $ret ]]; then
+    echo "Please install unzip"; exit $ret;
+fi
+if [[ $SRS_VALGRIND == YES ]]; then
+    valgrind --version >/dev/null 2>/dev/null; ret=$?; if [[ 0 -ne $ret ]]; then
+        echo "Please install valgrind"; exit $ret;
+    fi
+    if [[ ! -f /usr/include/valgrind/valgrind.h ]]; then
+        echo "Please install valgrind-dev"; exit $ret;
+    fi
+fi
+# Check tclsh, which is depended by SRT.
+if [[ $SRS_SRT == YES ]]; then
+    tclsh <<< "exit" >/dev/null 2>&1; ret=$?; if [[ 0 -ne $ret ]]; then
+        echo "Please install tclsh"; exit $ret;
+    fi
+    cmake --version >/dev/null 2>/dev/null; ret=$?; if [[ 0 -ne $ret ]]; then
+        echo "Please install cmake"; exit $ret;
+    fi
+fi
+pkg-config --version >/dev/null 2>/dev/null; ret=$?; if [[ 0 -ne $ret ]]; then
+    echo "Please install pkg-config"; exit $ret;
+fi
+
 #####################################################################################
 # Try to load cache if exists /usr/local/srs-cache
 #####################################################################################
diff --git a/trunk/src/app/srs_app_config.cpp b/trunk/src/app/srs_app_config.cpp
index 70b841a51..ebf8c65e5 100644
--- a/trunk/src/app/srs_app_config.cpp
+++ b/trunk/src/app/srs_app_config.cpp
@@ -2111,7 +2111,7 @@ srs_error_t SrsConfig::parse_argv(int& i, char** argv)
             case '?':
             case 'h':
                 show_help = true;
-                break;
+                return err;
             case 't':
                 show_help = false;
                 test_conf = true;
@@ -2124,7 +2124,7 @@ srs_error_t SrsConfig::parse_argv(int& i, char** argv)
             case 'V':
                 show_help = false;
                 show_version = true;
-                break;
+                return err;
             case 'g':
             case 'G':
                 show_help = false;
@@ -2141,6 +2141,8 @@ srs_error_t SrsConfig::parse_argv(int& i, char** argv)
                     continue;
                 }
                 return srs_error_new(ERROR_SYSTEM_CONFIG_INVALID, "-c requires params");
+            case '-':
+                continue;
             default:
                 return srs_error_new(ERROR_SYSTEM_CONFIG_INVALID, "invalid option: \"%c\", read help: %s -h",
                     *(p - 1), argv[0]);
@@ -2156,8 +2158,8 @@ void SrsConfig::print_help(char** argv)
            "%s, %s, %s, created by %sand %s\n\n"
            "Usage: %s <-h?vVgGe>|<[-t] -c filename>\n"
            "Options:\n"
-           "   -?, -h              : Show this help and exit 0.\n"
-           "   -v, -V              : Show version and exit 0.\n"
+           "   -?, -h, --help      : Show this help and exit 0.\n"
+           "   -v, -V, --version   : Show version and exit 0.\n"
            "   -g, -G              : Show server signature and exit 0.\n"
            "   -e                  : Use environment variable only, ignore config file.\n"
            "   -t                  : Test configuration file, exit with error code(0 for success).\n"
diff --git a/trunk/src/core/srs_core_version5.hpp b/trunk/src/core/srs_core_version5.hpp
index 64501dff2..769ca7d7c 100644
--- a/trunk/src/core/srs_core_version5.hpp
+++ b/trunk/src/core/srs_core_version5.hpp
@@ -9,6 +9,6 @@
 
 #define VERSION_MAJOR       5
 #define VERSION_MINOR       0
-#define VERSION_REVISION    123
+#define VERSION_REVISION    124
 
 #endif