Fixed linkage against external fmtlib.

spdlog-external-fmt.patch

@@ -0,0 +1,30 @@
+From fbb3f41dff9ad6499de48cadd756e99f18b4392c Mon Sep 17 00:00:00 2001
+From: gabime <gmelman1@gmail.com>
+Date: Sun, 20 Oct 2019 10:22:44 +0300
+Subject: [PATCH] Fix #1273
+
+---
+ CMakeLists.txt | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index fa9e1fab..abceb307 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -82,11 +82,15 @@ message(STATUS "Build type: " ${CMAKE_BUILD_TYPE})
+ set(SPDLOG_SRCS
+         src/spdlog.cpp
+         src/stdout_sinks.cpp
+-        src/fmt.cpp
+         src/color_sinks.cpp
+         src/file_sinks.cpp
+         src/async.cpp)
+ 
++
++if(NOT SPDLOG_FMT_EXTERNAL)
++    list(APPEND SPDLOG_SRCS src/fmt.cpp)
++endif()
++
+ if (SPDLOG_BUILD_SHARED)
+     if(WIN32)
+         message(FATAL_ERROR "spdlog shared lib is not yet supported under windows")

spdlog.spec

@@ -12,6 +12,8 @@ Source0:        %{url}/archive/v%{version}.tar.gz
 Patch100:       %{name}-fix-cassert.patch
 # https://github.com/gabime/spdlog/commit/4858d7e454e66d347024a074749535b91ccbeed9
 Patch101:       %{name}-fix-cmake.patch
+# https://github.com/gabime/spdlog/commit/fbb3f41dff9ad6499de48cadd756e99f18b4392c
+Patch102:       %{name}-external-fmt.patch
 
 BuildRequires:  google-benchmark-devel
 BuildRequires:  fmt-devel >= 6.1.2