diff --git a/env.sh b/env.sh
index c952e82281..171a868468 100755
--- a/env.sh
+++ b/env.sh
@@ -161,8 +161,18 @@ if [[ -z "${DORIS_BIN_UTILS}" ]]; then
     export DORIS_BIN_UTILS='/usr/bin/'
 fi
 
+if [[ -z "${DORIS_GCC_HOME}" ]]; then
+    DORIS_GCC_HOME="$(dirname "$(which gcc)")/.."
+    export DORIS_GCC_HOME
+fi
+
+if [[ ! -f "${DORIS_GCC_HOME}/bin/gcc" ]]; then
+    echo "Error: wrong directory DORIS_GCC_HOME=${DORIS_GCC_HOME}"
+    exit 1
+fi
+
 # export CLANG COMPATIBLE FLAGS
-CLANG_COMPATIBLE_FLAGS="$(echo | "${DORIS_GCC_HOME:-"$(dirname "$(which gcc)")/.."}/bin/gcc" -Wp,-v -xc++ - -fsyntax-only 2>&1 |
+CLANG_COMPATIBLE_FLAGS="$(echo | "${DORIS_GCC_HOME}/bin/gcc" -Wp,-v -xc++ - -fsyntax-only 2>&1 |
     grep -E '^\s+/' | awk '{print "-I" $1}' | tr '\n' ' ')"
 export CLANG_COMPATIBLE_FLAGS