How to get the emgucv compiled on my Ubuntu 18.04? It is said to support Ubuntu

问题

First I am not very familiar with C++ compile process, but I have to compile the emgucv repository on Ubuntu 18.04. I follow the instruction and try to figure out things by searching through Stack Exchange.

I got every dependencies setup, then the only file I need to execute is this one.

Although it is written for 16.04, seems to work for 18.04, but the compilation throws an error. It says _MAX_DRIVE, _MAX_DIR, _MAX_PATH, DWORD, errno_t, etc. are not declared. As suggested by the comment, they are Windows-specific. The error occurs in this file. And the module that contains this file is this.

My question is how to get this compiled on Ubuntu 18.04? I am very confused, since Emgucv says they support Linux (instruction at the end), and I believe others could have successfully compiled it on their Linux. I attempted to replace those constants _MAX_DRIVE, _MAX_DIR, _MAX_PATH by just numbers, the DWORD by unsigned long, and errno_t by int, then it says now GetModuleFileName, _splitpath_s are not declared. I don't know how to do. Is there anyway for this to work for Ubuntu?

[ 74%] Building CXX object Emgu.CV.Extern/tesseract/libtesseract/CMakeFiles/tesseract_ccutil.dir/tesseract-ocr.git/src/ccutil/mainblk.cpp.o
/media/philips_cpm/data1/emgucv/Emgu.CV.Extern/tesseract/libtesseract/tesseract-ocr.git/src/ccutil/mainblk.cpp: In member function ‘void tesseract::CCUtil::main_setup(const char*, const char*)’:
/media/philips_cpm/data1/emgucv/Emgu.CV.Extern/tesseract/libtesseract/tesseract-ocr.git/src/ccutil/mainblk.cpp:77:16: error: ‘_MAX_DRIVE’ was not declared in this scope
     char drive[_MAX_DRIVE];
                ^~~~~~~~~~
/media/philips_cpm/data1/emgucv/Emgu.CV.Extern/tesseract/libtesseract/tesseract-ocr.git/src/ccutil/mainblk.cpp:78:14: error: ‘_MAX_DIR’ was not declared in this scope
     char dir[_MAX_DIR];
              ^~~~~~~~
/media/philips_cpm/data1/emgucv/Emgu.CV.Extern/tesseract/libtesseract/tesseract-ocr.git/src/ccutil/mainblk.cpp:79:15: error: ‘_MAX_PATH’ was not declared in this scope
     char path[_MAX_PATH];
               ^~~~~~~~~
/media/philips_cpm/data1/emgucv/Emgu.CV.Extern/tesseract/libtesseract/tesseract-ocr.git/src/ccutil/mainblk.cpp:83:5: error: ‘DWORD’ was not declared in this scope
     DWORD length = GetModuleFileName(nullptr, path, sizeof(path));
     ^~~~~
/media/philips_cpm/data1/emgucv/Emgu.CV.Extern/tesseract/libtesseract/tesseract-ocr.git/src/ccutil/mainblk.cpp:85:9: error: ‘length’ was not declared in this scope
     if (length > 0 && length < sizeof(path)) {
         ^~~~~~
/media/philips_cpm/data1/emgucv/Emgu.CV.Extern/tesseract/libtesseract/tesseract-ocr.git/src/ccutil/mainblk.cpp:85:39: error: ‘path’ was not declared in this scope
     if (length > 0 && length < sizeof(path)) {
                                       ^~~~
/media/philips_cpm/data1/emgucv/Emgu.CV.Extern/tesseract/libtesseract/tesseract-ocr.git/src/ccutil/mainblk.cpp:86:7: error: ‘errno_t’ was not declared in this scope
       errno_t result = _splitpath_s(path, drive, sizeof(drive),
       ^~~~~~~
/media/philips_cpm/data1/emgucv/Emgu.CV.Extern/tesseract/libtesseract/tesseract-ocr.git/src/ccutil/mainblk.cpp:88:11: error: ‘result’ was not declared in this scope
       if (result == ERANGE) {
           ^~~~~~
/media/philips_cpm/data1/emgucv/Emgu.CV.Extern/tesseract/libtesseract/tesseract-ocr.git/src/ccutil/mainblk.cpp:92:17: error: ‘drive’ was not declared in this scope
       datadir = drive;
                 ^~~~~
/media/philips_cpm/data1/emgucv/Emgu.CV.Extern/tesseract/libtesseract/tesseract-ocr.git/src/ccutil/mainblk.cpp:93:18: error: ‘dir’ was not declared in this scope
       datadir += dir;
                  ^~~
Emgu.CV.Extern/tesseract/libtesseract/CMakeFiles/tesseract_ccutil.dir/build.make:302: recipe for target 'Emgu.CV.Extern/tesseract/libtesseract/CMakeFiles/tesseract_ccutil.dir/tesseract-ocr.git/src/ccutil/mainblk.cpp.o' failed
make[2]: *** [Emgu.CV.Extern/tesseract/libtesseract/CMakeFiles/tesseract_ccutil.dir/tesseract-ocr.git/src/ccutil/mainblk.cpp.o] Error 1
CMakeFiles/Makefile2:5929: recipe for target 'Emgu.CV.Extern/tesseract/libtesseract/CMakeFiles/tesseract_ccutil.dir/all' failed
make[1]: *** [Emgu.CV.Extern/tesseract/libtesseract/CMakeFiles/tesseract_ccutil.dir/all] Error 2
Makefile:162: recipe for target 'all' failed
make: *** [all] Error 2

Emgu CV compile manual for Ubuntu

The commands are summarized below

git clone https://github.com/emgucv/emgucv emgucv 

cd emgucv

git submodule update --init --recursive

cd platforms/ubuntu/16.04

./apt_install_dependency.sh

./cmake_configure.sh

来源：https://stackoverflow.com/questions/51527694/how-to-get-the-emgucv-compiled-on-my-ubuntu-18-04-it-is-said-to-support-ubuntu

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