Added an option to disable compiler warnings

CMakeLists.txt

@@ -79,6 +79,9 @@ option(SPDLOG_BUILD_BENCH "Build benchmarks (Requires https://github.com/google/
 # sanitizer options
 option(SPDLOG_SANITIZE_ADDRESS "Enable address sanitizer in tests" OFF)
 
+# warning options
+option(SPDLOG_ENABLE_WARNINGS "Enable compiler warnings" ON)
+
 # install options
 option(SPDLOG_INSTALL "Generate the install target" ${SPDLOG_MASTER_PROJECT})
 option(SPDLOG_FMT_EXTERNAL "Use external fmt library instead of bundled" OFF)

cmake/utils.cmake

@@ -28,6 +28,7 @@ endfunction()
 
 # Turn on warnings on the given target
 function(spdlog_enable_warnings target_name)
+    if(SPDLOG_ENABLE_WARNINGS)
         if (CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
             list(APPEND MSVC_OPTIONS "/W3")
             if(MSVC_VERSION GREATER  1900)  #Allow non fatal security wanrnings for msvc 2015
@@ -39,6 +40,7 @@ function(spdlog_enable_warnings target_name)
             $<$<OR:$<CXX_COMPILER_ID:Clang>,$<CXX_COMPILER_ID:AppleClang>,$<CXX_COMPILER_ID:GNU>>:
                 -Wall -Wextra -Wconversion -pedantic -Wfatal-errors>
             $<$<CXX_COMPILER_ID:MSVC>:${MSVC_OPTIONS}>)
+    endif()
 
 endfunction()