--- a/auto/depends.sh	2026-05-28 09:53:44.956682763 +0200
+++ b/auto/depends.sh	2026-05-28 09:54:48.638104360 +0200
@@ -61,30 +61,6 @@
     fi
     exit $ret;
 fi
-gcc --version >/dev/null 2>/dev/null; ret=$?; if [[ 0 -ne $ret ]]; then
-    if [[ $OS_IS_CENTOS == YES ]]; then
-        echo "Please install gcc by:"
-        echo "  yum install -y gcc"
-    elif [[ $OS_IS_UBUNTU == YES ]]; then
-        echo "Please install gcc by:"
-        echo "  apt install -y gcc"
-    else
-        echo "Please install gcc"
-    fi
-    exit $ret;
-fi
-g++ --version >/dev/null 2>/dev/null; ret=$?; if [[ 0 -ne $ret ]]; then
-    if [[ $OS_IS_CENTOS == YES ]]; then
-        echo "Please install g++ by:"
-        echo "  yum install -y gcc-c++"
-    elif [[ $OS_IS_UBUNTU == YES ]]; then
-        echo "Please install g++ by:"
-        echo "  apt install -y g++"
-    else
-        echo "Please install gcc-c++"
-    fi
-    exit $ret;
-fi
 make --version >/dev/null 2>/dev/null; ret=$?; if [[ 0 -ne $ret ]]; then
     if [[ $OS_IS_CENTOS == YES ]]; then
         echo "Please install make by:"
@@ -143,18 +119,6 @@
 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
-        if [[ $OS_IS_CENTOS == YES ]]; then
-            echo "Please install tclsh by:"
-            echo "  yum install -y tcl"
-        elif [[ $OS_IS_UBUNTU == YES ]]; then
-            echo "Please install tclsh by:"
-            echo "  apt install -y tclsh"
-        else
-            echo "Please install tclsh"
-        fi
-        exit $ret;
-    fi
     cmake --version >/dev/null 2>/dev/null; ret=$?; if [[ 0 -ne $ret ]]; then
         if [[ $OS_IS_CENTOS == YES ]]; then
             echo "Please install cmake by:"
--- a/auto/options.sh	2026-05-30 22:03:43.674352125 +0200
+++ b/auto/options.sh	2026-05-30 22:04:17.641002121 +0200
@@ -162,7 +162,6 @@
         echo "Warning: Your OS is not Ubuntu(no apt-get), CentOS(no yum), maxOS(not Darwin), Windows(not CYGWIN)"
     fi
 }
-apply_system_options
 
 #####################################################################################
 # Show help menu.
--- a/auto/setup_variables.sh	2026-05-30 22:04:45.460715450 +0200
+++ b/auto/setup_variables.sh	2026-05-30 22:26:06.381516409 +0200
@@ -6,7 +6,6 @@
 OS_PREFIX="Platform"
 
 # Detect gcc, which is required.
-gcc --version >/dev/null 2>/dev/null || (ret=$?; echo "Please install gcc"; exit $ret)
 
 # Discover SRS version from header file.
 mkdir -p ${SRS_OBJS} &&
@@ -19,7 +18,6 @@
 gcc -g -O0 ${SRS_OBJS}/test_version.c -I${SRS_WORKDIR}/src/core -o ${SRS_OBJS}/test_version 1>/dev/null 2>&1 &&
 SRS_VERSION=$(./${SRS_OBJS}/test_version 2>/dev/null) &&
 SRS_MAJOR=$(echo $SRS_VERSION |awk -F . '{print $1}');
-ret=$?; rm -rf ${SRS_OBJS}/test_version*; if [[ $ret -ne 0 ]]; then echo "Detect SRS version failed"; exit $ret; fi
 echo "Discover SRS version=${SRS_VERSION}, major=${SRS_MAJOR}"
 
 if [[ $OSTYPE == cygwin ]]; then