add Catch2 to scons build

SConstruct

@@ -44,6 +44,7 @@ print('C++ compiler:', env['CXX'])
 
 env.VariantDir('#build/obj', 'src')
 env.VariantDir('#build/obj/test', 'test')
+env.VariantDir('#build/obj/test/deps', 'deps')
 
 if env['debug']:
    env.Append(CCFLAGS=['-g','-o0'])

test/SConscript

@@ -3,6 +3,9 @@ import subprocess
 
 Import("env platform party_classes common_sources")
 
+# Add path to scons
+env.Append(CPPPATH=['./deps/Catch2/single_include'])
+
 test_sources = Glob("""*.cpp""") + Split("""
 	#build/obj/scenedit/scen.fileio.cpp
 """)