From abce78806c8a93d99cf63a5a44ff09873f46b56f Mon Sep 17 00:00:00 2001
From: loop0day <34915817+loop0day@users.noreply.github.com>
Date: Fri, 1 Jun 2018 21:00:59 +0800
Subject: [PATCH] cmake: renamed GFLAGS_NAMESPACE to GLOG_GFLAGS_NAMESPACE
 (#318)

This eliminates a conflict between glog and gflags preprocessor definition of GFLAGS_NAMESPACE that can cause the gflags namespace detection to fail (fixes #317).
---
 cmake/DetermineGflagsNamespace.cmake | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/cmake/DetermineGflagsNamespace.cmake b/cmake/DetermineGflagsNamespace.cmake
index 25111a1..3dde42b 100755
--- a/cmake/DetermineGflagsNamespace.cmake
+++ b/cmake/DetermineGflagsNamespace.cmake
@@ -15,7 +15,7 @@ macro(determine_gflags_namespace VARIABLE)
 
 int main(int argc, char**argv)
 {
-  GFLAGS_NAMESPACE::ParseCommandLineFlags(&argc, &argv, true);
+  GLOG_GFLAGS_NAMESPACE::ParseCommandLineFlags(&argc, &argv, true);
 }
 ")
     if (NOT CMAKE_REQUIRED_QUIET)
@@ -33,7 +33,7 @@ int main(int argc, char**argv)
       file (WRITE "${_check_file}" "${_check_code}")
       try_compile (${VARIABLE}
         "${CMAKE_BINARY_DIR}" "${_check_file}"
-        COMPILE_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS}" -DGFLAGS_NAMESPACE=${_namespace}
+        COMPILE_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS}" -DGLOG_GFLAGS_NAMESPACE=${_namespace}
         LINK_LIBRARIES gflags
         CMAKE_FLAGS -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
         OUTPUT_VARIABLE OUTPUT)