project init

Makefile

@@ -0,0 +1,36 @@
+PRIV_DIR    := $(MIX_APP_PATH)/priv
+BUILD_DIR   := $(MIX_APP_PATH)/cmake_build
+NIF_SO      := $(PRIV_DIR)/chromaprint_nif.so
+JOBS        ?= $(shell nproc 2>/dev/null || echo 4)
+CMAKE_BUILD_TYPE       ?= Release
+CHROMAPRINT_USE_SYSTEM ?= OFF
+
+CMAKE_EXTRA_ARGS ?=
+
+ifneq ($(strip $(CHROMAPRINT_INCLUDE_DIR)),)
+CMAKE_EXTRA_ARGS += -DCHROMAPRINT_INCLUDE_DIR=$(CHROMAPRINT_INCLUDE_DIR)
+endif
+ifneq ($(strip $(CHROMAPRINT_LIB_DIR)),)
+CMAKE_EXTRA_ARGS += -DCMAKE_LIBRARY_PATH=$(CHROMAPRINT_LIB_DIR)
+endif
+
+.PHONY: all clean
+
+all: $(NIF_SO)
+
+$(NIF_SO): $(BUILD_DIR)/CMakeCache.txt
+	@mkdir -p $(PRIV_DIR)
+	cmake --build $(BUILD_DIR) --config $(CMAKE_BUILD_TYPE) -j $(JOBS)
+	cmake --install $(BUILD_DIR)
+
+$(BUILD_DIR)/CMakeCache.txt:
+	@mkdir -p $(BUILD_DIR)
+	cmake -S c_src -B $(BUILD_DIR) \
+	  -DCMAKE_BUILD_TYPE=$(CMAKE_BUILD_TYPE) \
+	  -DERTS_INCLUDE_DIR=$(ERTS_INCLUDE_DIR) \
+	  -DPRIV_DIR=$(PRIV_DIR) \
+	  -DCHROMAPRINT_USE_SYSTEM=$(CHROMAPRINT_USE_SYSTEM) \
+	  $(CMAKE_EXTRA_ARGS)
+
+clean:
+	rm -rf $(BUILD_DIR) $(NIF_SO)