move to github actions

CMakeLists.txt

@@ -3,6 +3,8 @@ cmake_minimum_required(VERSION 3.8 FATAL_ERROR)
 
 if(NOT DEFINED PROJECT_NAME)
     set(BUILD_AS_STANDALONE ON)
+else()
+    set(BUILD_AS_STANDALONE OFF)
 endif()
 
 project(flat.hpp)
@@ -11,6 +13,14 @@ add_library(${PROJECT_NAME} INTERFACE)
 target_include_directories(${PROJECT_NAME} INTERFACE headers)
 target_compile_features(${PROJECT_NAME} INTERFACE cxx_std_17)
 
+target_compile_options(${PROJECT_NAME}
+    INTERFACE
+    $<$<OR:$<CXX_COMPILER_ID:Clang>,$<CXX_COMPILER_ID:AppleClang>>:
+        -Wno-c++98-compat-pedantic
+        -Wno-padded
+        -Wno-shadow
+        -Wno-unknown-warning-option>)
+
 if(BUILD_AS_STANDALONE)
     option(BUILD_WITH_UNBENCH "Build with benchmarks" OFF)
     if(BUILD_WITH_UNBENCH)