An error occurred when trying to build OpenCV 3.4.1 with the make command. How do I build successfully?
/home/ユーザ名/support/src/opencv/opencv-3.4.1/modules/core/src/utils/filesystem.cpp:108:17: error:
variable has incomplete type 'struct stat'
struct stat stat_buf;
^
/home/ユーザ名/support/src/opencv/opencv-3.4.1/modules/core/src/utils/filesystem.cpp:108:12: note:
forward declaration of 'stat'
struct stat stat_buf;
^
/home/ユーザ名/support/src/opencv/opencv-3.4.1/modules/core/src/utils/filesystem.cpp:129:23: error:
use of undeclared identifier 'rmdir'
bool result = rmdir(path.c_str()) == 0;
^
/home/ユーザ名/support/src/opencv/opencv-3.4.1/modules/core/src/utils/filesystem.cpp:141:23: error:
use of undeclared identifier 'unlink'
bool result = unlink(path.c_str()) == 0;
^
/home/ユーザ名/support/src/opencv/opencv-3.4.1/modules/core/src/utils/filesystem.cpp:380:17: error:
allocation of incomplete type 'cv::utils::fs::FileLock::Impl'
: pImpl(new Impl(fname))
^~~~
/home/ユーザ名/support/src/opencv/opencv-3.4.1/modules/core/include/opencv2/core/utils/filesystem.private.hpp:55:12: note:
forward declaration of 'cv::utils::fs::FileLock::Impl'
struct Impl;
^
/home/ユーザ名/support/src/opencv/opencv-3.4.1/modules/core/src/utils/filesystem.cpp:386:5: warning:
deleting pointer to incomplete type 'cv::utils::fs::FileLock::Impl' may
cause undefined behavior [-Wdelete-incomplete]
delete pImpl;
^ ~~~~~
/home/ユーザ名/support/src/opencv/opencv-3.4.1/modules/core/include/opencv2/core/utils/filesystem.private.hpp:55:12: note:
forward declaration of 'cv::utils::fs::FileLock::Impl'
struct Impl;
^
/home/ユーザ名/support/src/opencv/opencv-3.4.1/modules/core/src/utils/filesystem.cpp:390:40: error:
member access into incomplete type 'cv::utils::fs::FileLock::Impl'
void FileLock::lock() { CV_Assert(pImpl->lock()); }
^
/home/ユーザ名/support/src/opencv/opencv-3.4.1/modules/core/include/opencv2/core/utils/filesystem.private.hpp:55:12: note:
forward declaration of 'cv::utils::fs::FileLock::Impl'
struct Impl;
^
/home/ユーザ名/support/src/opencv/opencv-3.4.1/modules/core/src/utils/filesystem.cpp:391:42: error:
member access into incomplete type 'cv::utils::fs::FileLock::Impl'
void FileLock::unlock() { CV_Assert(pImpl->unlock()); }
^
/home/ユーザ名/support/src/opencv/opencv-3.4.1/modules/core/include/opencv2/core/utils/filesystem.private.hpp:55:12: note:
forward declaration of 'cv::utils::fs::FileLock::Impl'
struct Impl;
^
/home/ユーザ名/support/src/opencv/opencv-3.4.1/modules/core/src/utils/filesystem.cpp:392:47: error:
member access into incomplete type 'cv::utils::fs::FileLock::Impl'
void FileLock::lock_shared() { CV_Assert(pImpl->lock_shared()); }
^
/home/ユーザ名/support/src/opencv/opencv-3.4.1/modules/core/include/opencv2/core/utils/filesystem.private.hpp:55:12: note:
forward declaration of 'cv::utils::fs::FileLock::Impl'
struct Impl;
^
/home/ユーザ名/support/src/opencv/opencv-3.4.1/modules/core/src/utils/filesystem.cpp:393:49: error:
member access into incomplete type 'cv::utils::fs::FileLock::Impl'
void FileLock::unlock_shared() { CV_Assert(pImpl->unlock_shared()); }
^
/home/ユーザ名/support/src/opencv/opencv-3.4.1/modules/core/include/opencv2/core/utils/filesystem.private.hpp:55:12: note:
forward declaration of 'cv::utils::fs::FileLock::Impl'
struct Impl;
^
1 warning and 8 errors generated.
*** Error code 1
Stop.
make[2]: stopped in /home/ユーザ名/support/src/opencv/opencv-3.4.1/build
*** Error code 1
Stop.
make[1]: stopped in /home/ユーザ名/support/src/opencv/opencv-3.4.1/build
*** Error code 1
Stop.
make: stopped in /home/ユーザ名/support/src/opencv/opencv-3.4.1/build