add DEFINE_int32/DEFINE_bool/DEFINE_string flag (#18869)

paddle/scripts/paddle_build.sh

@@ -546,6 +546,17 @@ function assert_api_spec_approvals() {
             exit 1
         fi
     fi
+    
+    HAS_DEFINE_FLAG=`git diff -U0 upstream/$BRANCH |grep -o -m 1 "DEFINE_int32" |grep -o -m 1 "DEFINE_bool" | grep -o -m 1 "DEFINE_string" || true`
+    if [ ${HAS_DEFINE_FLAG} ] && [ "${GIT_PR_ID}" != "" ]; then
+        APPROVALS=`curl -H "Authorization: token ${GITHUB_API_TOKEN}" https://api.github.com/repos/PaddlePaddle/Paddle/pulls/${GIT_PR_ID}/reviews?per_page=10000 | \
+        python ${PADDLE_ROOT}/tools/check_pr_approval.py 1 47554610` 
+        echo "current pr ${GIT_PR_ID} got approvals: ${APPROVALS}"
+        if [ "${APPROVALS}" == "FALSE" ]; then
+            echo "You must have one RD lanxianghit approval for the usage (either add or delete) of DEFINE_int32/DEFINE_bool/DEFINE_string flag."
+            exit 1
+        fi
+    fi
 }