[深度学习][原创]darknet编译错误IplImage {aka struct _IplImage}’ was expected

environment: ubuntu18.04 opencv3.4.4 cuda10.2+cudnn7.6.5gcc -Iinclude/ -Isrc/ -DOPENCV pkg-config --cflags opencv -DGPU -I/usr/local/cuda/include/ -DCUDNN -Wall -Wno-unused-result -Wno-unknown-pragmas -Wfatal-errors -fPIC -Ofast -DOPENCV -DGPU -DCUDNN -c ./src/data.c -o obj/data.o In file included from /usr/local/include/opencv2/core/core_c.h:48:0, from /usr/local/include/opencv2/highgui/highgui_c.h:45, from ./src/data.c:11: /usr/local/include/opencv2/core/types_c.h: In function ‘cvIplImage’: /usr/local/include/opencv2/core/types_c.h:370:12: error: incompatible types when returning type ‘int’ but ‘IplImage {aka struct _IplImage}’ was expected return _IplImage(); ^~~~~~~~~~~ compilation terminated due to -Wfatal-errors. Makefile:95: recipe for target 'obj/data.o' failed make: *** [obj/data.o] Error 1

解决办法：

/usr/local/include/opencv2/core/types_c.h:370:12: error: incompatible types when returning type ‘int’ but ‘IplImage {aka struct _IplImage}’ was expected      return _IplImage(); 解决：cd /usr/local/include/opencv2/core,sudo gedit types_c.h,注释掉：

/*CV_INLINE IplImage cvIplImage() { #if !defined(CV__ENABLE_C_API_CTORS)     IplImage self = CV_STRUCT_INITIALIZER; self.nSize = sizeof(IplImage); return self; #else     return _IplImage(); #endif }*/

编译完成后在把注释取消，经过测试，取消后不影响使用