【发布时间】：2020-11-04 03:37:37
【问题描述】：
我正在编译一个项目，我想将它链接到给定目录中的opencv，而不是像/usr/local/lib/libopencv这样的系统目录
最后是默认的makefile，链接到系统目录/usr/local/lib。
我要链接的opencv位于目录../../third_party/opencv/，有../../third_party/opencv/include/和../../third_party/opencv/lib/。绝对路径是/home/somepath/third_party/opencv/。
我应该如何修改makefile 以使项目链接到我要使用的opencv，而不是系统版本？
目前，当我编译项目并使用ldd检查它的依赖关系时，比如ldd evaluate | grep opencv，我得到了以下信息。这意味着该项目仍然链接到系统版本，而不是我选择的。
libopencv_highgui.so.3.0 => /usr/local/lib/libopencv_highgui.so.3.0 (0x00007efc72527000)
libopencv_imgcodecs.so.3.0 => /usr/local/lib/libopencv_imgcodecs.so.3.0 (0x00007efc7217a000)
libopencv_imgproc.so.3.0 => /usr/local/lib/libopencv_imgproc.so.3.0 (0x00007efc711f8000)
libopencv_core.so.3.0 => /usr/local/lib/libopencv_core.so.3.0 (0x00007efc70565000)
谢谢你帮助我！！！
PROJECT_NAME:= evaluate
# config ----------------------------------
INCLUDE_DIRS := include
LIBRARY_DIRS := lib
COMMON_FLAGS := -DCPU_ONLY
CXXFLAGS := -std=c++11 -fopenmp -D_GLIBCXX_USE_CXX11_ABI=0
LDFLAGS := -fopenmp -Wl,-rpath,./lib
OPENCV = `pkg-config opencv --cflags --libs`
LIB = $(OPENCV)
BUILD_DIR := build
# make rules -------------------------------
CXX ?= g++
BUILD_DIR ?= ./build
LIBRARIES += opencv_core opencv_highgui opencv_imgproc #opencv_imgcodecs
CXXFLAGS += $(COMMON_FLAGS) $(foreach includedir,$(INCLUDE_DIRS),-I$(includedir))
LDFLAGS += $(COMMON_FLAGS) $(foreach includedir,$(LIBRARY_DIRS),-L$(includedir)) $(foreach library,$(LIBRARIES),-l$(library))
SRC_DIRS += $(shell find * -type d -exec bash -c "find {} -maxdepth 1 \( -name '*.cpp' -o -name '*.proto' \) | grep -q ." \; -print)
CXX_SRCS += $(shell find src/ -name "*.cpp")
CXX_TARGETS:=$(patsubst %.cpp, $(BUILD_DIR)/%.o, $(CXX_SRCS))
ALL_BUILD_DIRS := $(sort $(BUILD_DIR) $(addprefix $(BUILD_DIR)/, $(SRC_DIRS)))
.PHONY: all
all: $(PROJECT_NAME)
.PHONY: $(ALL_BUILD_DIRS)
$(ALL_BUILD_DIRS):
@mkdir -p $@
$(BUILD_DIR)/%.o: %.cpp | $(ALL_BUILD_DIRS)
@echo "CXX" $<
@$(CXX) $(CXXFLAGS) -c -o $@ $<
$(PROJECT_NAME): $(CXX_TARGETS)
@echo "CXX/LD" $@
@$(CXX) -o $@ $^ $(LDFLAGS) $(LIB)
.PHONY: clean
clean:
@rm -rf $(CXX_TARGETS)
@rm -rf $(PROJECT_NAME)
@rm -rf $(BUILD_DIR)
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