Fix compilation errors caused by ssl on MacOS

Related issue: #328 #360 #666 #723 #726

config_brpc.sh

@@ -136,6 +136,9 @@ find_dir_of_header_or_die() {
     $ECHO $dir
 }
 
+# User specified path of openssl, if not given it's empty
+OPENSSL_LIB=$(find_dir_of_lib ssl)
+
 # Inconvenient to check these headers in baidu-internal
 #PTHREAD_HDR=$(find_dir_of_header_or_die pthread.h)
 OPENSSL_HDR=$(find_dir_of_header_or_die openssl/ssl.h)
@@ -233,7 +236,7 @@ PROTOBUF_HDR=$(find_dir_of_header_or_die google/protobuf/message.h)
 LEVELDB_HDR=$(find_dir_of_header_or_die leveldb/db.h)
 
 HDRS=$($ECHO "$GFLAGS_HDR\n$PROTOBUF_HDR\n$LEVELDB_HDR\n$OPENSSL_HDR" | sort | uniq)
-LIBS=$($ECHO "$GFLAGS_LIB\n$PROTOBUF_LIB\n$LEVELDB_LIB\n$SNAPPY_LIB" | sort | uniq)
+LIBS=$($ECHO "$GFLAGS_LIB\n$PROTOBUF_LIB\n$LEVELDB_LIB\n$OPENSSL_LIB\n$SNAPPY_LIB" | sort | uniq)
 
 absent_in_the_list() {
     TMP=`$ECHO "$1\n$2" | sort | uniq`