From 2067f66d662ef0925733ba95595a3cf988a2d32d Mon Sep 17 00:00:00 2001
From: zeroxia <zeroxia@users.noreply.github.com>
Date: Tue, 10 Sep 2024 11:14:17 +0800
Subject: [PATCH] cmake export configuration: allow repeating
 find_package(jsoncpp) calls (#1491)

In jsoncpp-namspaced-targets.cmake, it creates JsonCpp::JsonCpp imported
library without first checking whether it was already created by former
call to find_package(JsonCpp).  As CMake allows repeated call to
find_package(), the error of "another target with the same name already
exists" should be fixed.

Co-authored-by: xiazuoling.xzl <xiazuoling.xzl@alibaba-inc.com>
Co-authored-by: Jordan Bayles <bayles.jordan@gmail.com>