adapt gflags>=2.1

config_brpc.sh

@@ -149,9 +149,12 @@ PROTOC=$(find_bin_or_die protoc)
 
 GFLAGS_HDR=$(find_dir_of_header_or_die gflags/gflags.h)
 # namespace of gflags may not be google, grep it from source.
-GFLAGS_NS=$(grep "namespace [a-z0-9]\+ {" $GFLAGS_HDR/gflags/gflags.h | head -1 | awk '{print $2}')
+GFLAGS_NS=$(grep "namespace [_A-Za-z0-9]\+ {" $GFLAGS_HDR/gflags/gflags_declare.h | head -1 | awk '{print $2}')
+if [ "$GFLAGS_NS" == "GFLAGS_NAMESPACE" ]; then
+    GFLAGS_NS=$(grep "#define GFLAGS_NAMESPACE [_A-Za-z0-9]\+" $GFLAGS_HDR/gflags/gflags_declare.h | head -1 | awk '{print $3}')
+fi
 if [ -z "$GFLAGS_NS" ]; then
-    >&2 $ECHO "Fail to grep namespace of gflags source $GFLAGS_HDR/gflags/gflags.h"
+    >&2 $ECHO "Fail to grep namespace of gflags source $GFLAGS_HDR/gflags/gflags_declare.h"
     exit 1
 fi
 

test/iobuf.proto

+syntax="proto2";
 package proto;
 
 enum CompressType {