当使用cygwin g++构建项目时，即使我已经用-I指定了路径，也找不到包含头文件

Question

我就知道会有这样的问题困扰你。但对我来说很奇怪。请耐心让我完成我的问题陈述。

背景: Windows vista，cygwin最新版本，opencv 2.4.3

当opencv安装在d:\Application\OpenCV2.4.3\opencv：

OPENCV=/cygdrive/d/Application/OpenCV2.4.3/opencv/build
CUSTOM_INCLUDES+=-I${OPENCV}/include -I${OPENCV}/include/opencv -I${OPENCV}/include/opencv2/ml -I${OPENCV}/include/opencv2/highgui -I${SRC_DIR}
CUSTOM_LIBRARIES+= -L${OPENCV}/x86/mingw/lib -lopencv_core -lopencv_highgui -lopencv_imgproc -lopencv_objdetect 

需要构建的头文件是这样的：

#include <iostream>
#include <string>
#include <opencv2/core/core.hpp>
#include <opencv2/core/core_c.h>
blablabla...

当我执行：

g++ -c src/ObjectDetector.cpp -Wall  -O3 -ffast-math -funroll-loops   -I/cygdrive/d/Application/OpenCV2.4.3/opencv/build/include -I/cygdrive/d/Application/OpenCV2.4.3/opencv/build/include/opencv -I/cygdrive/d/Application/OpenCV2.4.3/opencv/build/include/opencv2/ml -I/cygdrive/d/Application/OpenCV2.4.3/opencv/build/include/opencv2/highgui -Isrc/ -o build/ObjectDetector.o

噢，结果是：

    In file included from src/ObjectDetector.cpp:10:0:
src/ObjectDetector.h:15:33: fatal error: opencv2/core/core.hpp: No such file or directory

/cygdrive/d/Application/OpenCV2.4.3/opencv/build/include i 100 %肯定opencv2 2/core/core.hpp在中，并使用"“替代<>。这些作品都没有，我很痛苦。我已经引用了每一个谷歌搜索项目。请帮帮我。

谢谢。

Answer 1

看起来，您正在尝试将MinGW编译的OpenCV与Cygwin混合使用，这是行不通的。如果您想在Cygwin上使用OpenCV，请尝试从Cygwin港安装libopencv-devel包。