init cpp repo

Makefile

@@ -0,0 +1,26 @@
+.RECIPEPREFIX = >
+.DEFAULT_GOAL = build/main.out
+CXX = clang++
+CXXFLAGS += -std=c++26 -Wno-experimental-header-units
+LDFLAGS += -std=c++26
+SYSTEMHEADER_FLAGS = -Wno-deprecated-builtins -Wno-pragma-system-header-outside-header -Wno-keyword-compat
+build_module_path = $(let first rest,$1,$(if $(rest),-fmodule-file=$(first) $(call build_module_path,$(rest)),-fmodule-file=$(first)))
+
+build/main.out: build/main.o
+> $(CXX) $(LDFLAGS) $^ -o $@
+
+build/main.o: main.cxx build/print.pcm build/type_traits.pcm
+> $(CXX) $(CXXFLAGS) -c $(filter-out %.pcm,$^) $(call build_module_path,$(filter %.pcm,$^))
+> @mv $(patsubst build/%,%,$@) $@
+
+build/%.pcm:
+> $(CXX) $(CXXFLAGS) -xc++-system-header --precompile $(patsubst build/%.pcm,%,$@) -o $@ $(SYSTEMHEADER_FLAGS)
+
+.PHONY: clean run
+clean:
+> @-rm -rf ./build/*
+bear: clean
+> bear -- $(MAKE)
+
+run: $(.DEFAULT_GOAL)
+> @./$(.DEFAULT_GOAL)