From 5bf7fdea16be0db6eba80ecfafeb56fa6d7f19fd Mon Sep 17 00:00:00 2001
From: Sergiu Deitsch <sergiu.deitsch@gmail.com>
Date: Tue, 13 Jul 2021 13:20:41 +0200
Subject: [PATCH] cmake: prefer linking against gflags::gflags (fixes #683)

---
 CMakeLists.txt | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0f3d485..5cafe39 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -630,7 +630,12 @@ if (HAVE_PTHREAD)
 endif (HAVE_PTHREAD)
 
 if (gflags_FOUND)
-  target_link_libraries (glog PUBLIC gflags)
+  # Prefer the gflags target that uses double colon convention
+  if (TARGET gflags::gflags)
+    target_link_libraries (glog PUBLIC gflags::gflags)
+  else (TARGET gflags::gflags)
+    target_link_libraries (glog PUBLIC gflags)
+  endif (TARGET gflags::gflags)
 
   target_compile_definitions (glog PRIVATE
     GFLAGS_DLL_DECLARE_FLAG=GOOGLE_GLOG_DLL_DECL