File 0015-WITH_SYSTEM_FMT.patch of Package ceph-ceph-18.2.7

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index e1f90f7..fa7dce0 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -323,11 +323,10 @@ endif()
 option(WITH_FMT_HEADER_ONLY "use header-only version of fmt library" OFF)
 set(WITH_FMT_VERSION "8.1.1" CACHE
   STRING "build with fmt version")
-find_package(fmt ${WITH_FMT_VERSION} QUIET)
-if(fmt_FOUND)
-  include_directories(SYSTEM "${fmt_INCLUDE_DIR}")
+option(WITH_SYSTEM_FMT "require and build with system fmt" OFF)
+if (WITH_SYSTEM_FMT)
+  find_package(fmt ${WITH_FMT_VERSION} QUIET)
 else()
-  message(STATUS "Could not find fmt, will build it")
   set(old_BUILD_SHARED_LIBS ${BUILD_SHARED_LIBS})
   set(BUILD_SHARED_LIBS FALSE)
   add_subdirectory(fmt)