mac try building boost with github action

.github/workflows/ci.yml

@@ -52,13 +52,24 @@
 					uses: actions/checkout@v2,
 					with: { submodules: true }
 				},
+				{
+					name: Build Boost,
+					id: boost,
+					uses: egor-tensin/build-boost@v1,
+					with: {
+						version: 1.85.0,
+						libraries: filesystem system,
+						platform: x64,
+						configuration: Release
+					}
+				},
 				{
 					name: install dependencies,
-					run: brew install scons SFML Boost
+					run: brew install scons SFML
 				},
 				{
 					name: build and unit test,
-					run: ./.github/workflows/scripts/mac/scons-build.sh
+					run: './.github/workflows/scripts/mac/scons-build.sh INCLUDEPATH="${{ steps.boost.outputs.root }}/include" LIBPATH="${{ steps.boost.outputs.librarydir }}"',
 				},
 				{
 					name: 'Tar files',

.github/workflows/scripts/mac/scons-build.sh

@@ -4,4 +4,4 @@ export CC="$(brew --prefix llvm)/bin/clang"
 export CXX="$(brew --prefix llvm)/bin/clang++"
 export SDKROOT="$(xcrun --show-sdk-path)"
 
-scons CXXFLAGS="-I/usr/local/opt/zlib/include" LINKFLAGS="-L/usr/local/opt/zlib/lib"
+scons CXXFLAGS="-I/usr/local/opt/zlib/include" LINKFLAGS="-L/usr/local/opt/zlib/lib" $@