git subrepo clone https://github.com/HarbourMasters/ZAPDTR.git

subrepo:
  subdir:   "ZAPDTR"
  merged:   "a53a53ea4"
upstream:
  origin:   "https://github.com/HarbourMasters/ZAPDTR.git"
  branch:   "master"
  commit:   "a53a53ea4"
git-subrepo:
  version:  "0.4.1"
  origin:   "???"
  commit:   "???"

ZAPDTR/ZAPDUtils/Makefile

@@ -0,0 +1,28 @@
+# Only used for standalone compilation, usually inherits these from the main makefile
+CXXFLAGS ?= -Wall -Wextra -O2 -g -std=c++17
+
+SRC_DIRS  := $(shell find -type d -not -path "*build*")
+CPP_FILES := $(foreach dir,$(SRC_DIRS),$(wildcard $(dir)/*.cpp))
+H_FILES   := $(foreach dir,$(SRC_DIRS),$(wildcard $(dir)/*.h))
+
+O_FILES   := $(foreach f,$(CPP_FILES:.cpp=.o),build/$f)
+LIB       := ZAPDUtils.a
+
+# create build directories
+$(shell mkdir -p $(foreach dir,$(SRC_DIRS),build/$(dir)))
+
+all: $(LIB)
+
+clean:
+	rm -rf build $(LIB)
+
+format:
+	clang-format-11 -i $(CPP_FILES) $(H_FILES)
+
+.PHONY: all clean format
+
+build/%.o: %.cpp
+	$(CXX) $(CXXFLAGS) $(OPTFLAGS) -c $(OUTPUT_OPTION) $<
+
+$(LIB): $(O_FILES)
+	$(AR) rcs $@ $^