< builtin >: recipe for target 'ImageIOpng.o' failed-马春杰杰

文章目录[隐藏] 1 编译color_flow1.1 首先下载：下载地址见文末。1.2 编译2 测试3 转换flo文件4 问题解决：假设有光流图out.flo文件，想要转为png进行可视化，依次执行...

时间:2021/8/15 分类:深度学习 人气:258 评论:0

编译光流图color_flow打开程序的时候，出现错误：

$ make
g++  -O3 -W -Wall  -c -o Convert.o Convert.cpp
g++  -O3 -W -Wall  -c -o Convolve.o Convolve.cpp
g++  -O3 -W -Wall  -c -o Image.o Image.cpp
g++  -O3 -W -Wall  -c -o ImageIO.o ImageIO.cpp
ImageIO.cpp: In function ‘void ReadFileTGA(CByteImage&, const char*)’:
ImageIO.cpp:169:9: warning: this ‘if’ clause does not guard... [-Wmisleading-indentation]
         if (h.cMapBits != 24)
         ^~
ImageIO.cpp:171:6: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘if’
      int l = fileBytes * cMapSize;
      ^~~
ImageIO.cpp: In function ‘void ReadFilePGM(CByteImage&, const char*)’:
ImageIO.cpp:358:5: warning: this ‘if’ clause does not guard... [-Wmisleading-indentation]
     if (stream == 0)
     ^~
ImageIO.cpp:361:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘if’
  int width, height, nBands;
  ^~~
ImageIO.cpp: In function ‘void read_header(FILE*, const char*, char, char, int*, int*, int*, int)’:
ImageIO.cpp:334:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  fscanf(fp, "%d", width);
                         ^
ImageIO.cpp:336:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  fscanf(fp, "%d", height);
                          ^
ImageIO.cpp:339:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   fscanf(fp, "%d", nbands);
                           ^
g++  -O3 -W -Wall  -c -o ImageIOpng.o ImageIOpng.cpp
ImageIOpng.cpp:19:17: fatal error: png.h: No such file or directory
 #include "png.h"
                 ^
compilation terminated.
<builtin>: recipe for target 'ImageIOpng.o' failed
make: *** [ImageIOpng.o] Error 1

$ make

g++ -O3 -W -Wall -c -o Convert.o Convert.cpp

g++ -O3 -W -Wall -c -o Convolve.o Convolve.cpp

g++ -O3 -W -Wall -c -o Image.o Image.cpp

g++ -O3 -W -Wall -c -o ImageIO.o ImageIO.cpp

ImageIO.cpp: In function ‘void ReadFileTGA(CByteImage&, const char*)’:

ImageIO.cpp:169:9: warning: this ‘if’ clause does not guard... [-Wmisleading-indentation]

if (h.cMapBits != 24)

ImageIO.cpp:171:6: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘if’

int l = fileBytes * cMapSize;

^~~

ImageIO.cpp: In function ‘void ReadFilePGM(CByteImage&, const char*)’:

ImageIO.cpp:358:5: warning: this ‘if’ clause does not guard... [-Wmisleading-indentation]

if (stream == 0)

ImageIO.cpp:361:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘if’

int width, height, nBands;

^~~

ImageIO.cpp: In function ‘void read_header(FILE*, const char*, char, char, int*, int*, int*, int)’:

ImageIO.cpp:334:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]

fscanf(fp, "%d", width);

ImageIO.cpp:336:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]

fscanf(fp, "%d", height);

ImageIO.cpp:339:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]

fscanf(fp, "%d", nbands);