Tesseract 3.05 Build errors in Visual Studio 2017

问题

I used the solution provided here in order to make Tesseract 3.05 work on my windows10 x64 project, visual studio 2017. I got these errors when building it:

    11>c:\users\mestiri\documents\vs2015_tesseract-master\vs2015_tesseract-master\tesseract_3.05\ccutil\unichar.h(164): error C3646: 'UTF32ToUTF8': unknown override specifier
11>c:\users\mestiri\documents\vs2015_tesseract-master\vs2015_tesseract-master\tesseract_3.05\ccutil\unichar.h(164): error C2059: syntax error: 'const'
11>c:\users\jihed mestiri\documents\vs2015_tesseract-master\vs2015_tesseract-master\tesseract_3.05\ccutil\unichar.h(164): error C2238: unexpected token(s) preceding ';'
11>c:\users\jihed mestiri\documents\vs2015_tesseract-master\vs2015_tesseract-master\tesseract_3.05\ccutil\genericvector.h(376): warning C4267: 'argument': conversion from 'size_t' to 'int', possible loss of data
11>c:\users\jihed mestiri\documents\vs2015_tesseract-master\vs2015_tesseract-master\tesseract_3.05\ccutil\params.h(205): warning C4800: 'BOOL8': forcing value to bool 'true' or 'false' (performance warning)
11>c:\users\jihed mestiri\documents\vs2015_tesseract-master\vs2015_tesseract-master\tesseract_3.05\ccutil\unicharset.h(241): error C3646: 'CleanupString': unknown override specifier
11>c:\users\jihed mestiri\documents\vs2015_tesseract-master\vs2015_tesseract-master\tesseract_3.05\ccutil\unicharset.h(241): error C2059: syntax error: 'const'
11>c:\users\jihed mestiri\documents\vs2015_tesseract-master\vs2015_tesseract-master\tesseract_3.05\ccutil\unicharset.h(241): error C2334: unexpected token(s) preceding '{'; skipping apparent function body
11>c:\users\jihed mestiri\documents\vs2015_tesseract-master\vs2015_tesseract-master\tesseract_3.05\ccutil\unicharset.h(244): error C3646: 'CleanupString': unknown override specifier
11>c:\users\jihed mestiri\documents\vs2015_tesseract-master\vs2015_tesseract-master\tesseract_3.05\ccutil\unicharset.h(244): error C2059: syntax error: 'const'
11>c:\users\jihed mestiri\documents\vs2015_tesseract-master\vs2015_tesseract-master\tesseract_3.05\ccutil\unicharset.h(244): error C2238: unexpected token(s) preceding ';'
11>c:\users\jihed mestiri\documents\vs2015_tesseract-master\vs2015_tesseract-master\tesseract_3.05\ccutil\unicharset.h(265): error C2065: 'string': undeclared identifier
11>c:\users\mestiri\documents\vs2015_tesseract-master\vs2015_tesseract-master\tesseract_3.05\ccutil\unicharset.h(265): error C2146: syntax error: missing ';' before identifier 'cleaned'
11>c:\users\ mestiri\documents\vs2015_tesseract-master\vs2015_tesseract-master\tesseract_3.05\ccutil\unicharset.h(265): error C2065: 'cleaned': undeclared identifier
11>c:\users\mestiri\documents\vs2015_tesseract-master\vs2015_tesseract-master\tesseract_3.05\ccutil\unicharset.h(265): error C3861: 'CleanupString': identifier not found
11>c:\users\jihed mestiri\documents\vs2015_tesseract-master\vs2015_tesseract-master\tesseract_3.05\ccutil\unicharset.h(266): error C2065: 'cleaned': undeclared identifier
11>c:\users\jihed mestiri\documents\vs2015_tesseract-master\vs2015_tesseract-master\tesseract_3.05\ccutil\tessdatamanager.h(181): error C3646: 'VersionString': unknown override specifier
11>c:\users\jihed mestiri\documents\vs2015_tesseract-master\vs2015_tesseract-master\tesseract_3.05\ccutil\tessdatamanager.h(181): error C2059: syntax error: '('
11>c:\users\jihed mestiri\documents\vs2015_tesseract-master\vs2015_tesseract-master\tesseract_3.05\ccutil\tessdatamanager.h(181): error C2238: unexpected token(s) preceding ';'
11>c:\users\jihed mestiri\documents\vs2015_tesseract-master\vs2015_tesseract-master\tesseract_3.05\ccutil\tessdatamanager.h(183): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
11>c:\users\jihed mestiri\documents\vs2015_tesseract-master\vs2015_tesseract-master\tesseract_3.05\ccutil\tessdatamanager.h(183): error C2143: syntax error: missing ',' before '&'
11>c:\users\jihed mestiri\documents\vs2015_tesseract-master\vs2015_tesseract-master\tesseract_3.05\ccutil\tessdatamanager.h(134): error C2664: 'void tesseract::TessdataManager::SetVersionString(const int)': cannot convert argument 1 from 'const char [13]' to 'const int'
11>c:\users\jihed mestiri\documents\vs2015_tesseract-master\vs2015_tesseract-master\tesseract_3.05\ccutil\tessdatamanager.h(134): note: There is no context in which this conversion is possible
11>c:\users\jihed mestiri\documents\vs2015_tesseract-master\vs2015_tesseract-master\tesseract_3.05\ccutil\tessdatamanager.h(138): error C2664: 'void tesseract::TessdataManager::SetVersionString(const int)': cannot convert argument 1 from 'const char [13]' to 'const int'
11>c:\users\jihed mestiri\documents\vs2015_tesseract-master\vs2015_tesseract-master\tesseract_3.05\ccutil\tessdatamanager.h(138): note: There is no context in which this conversion is possible
11>c:\users\jihed mestiri\documents\vs2015_tesseract-master\vs2015_tesseract-master\tesseract_3.05\dict\dict.h(55): warning C4566: character represented by universal-character-name '\u2606' cannot be represented in the current code page (1252)
11>c:\users\jihed mestiri\documents\vs2015_tesseract-master\vs2015_tesseract-master\tesseract_3.05\api\tesseractmain.cpp(34): fatal error C1083: Cannot open include file: 'simddetect.h': No such file or directory
11>Done building project "tesseract.vcxproj" -- FAILED.
========== Build: 9 succeeded, 2 failed, 0 up-to-date, 0 skipped ==========

How to resolve them?

回答1:

Since the time of the linked answer, project structure was changed. It's updated to Tesseract 3.05 and clear Git submodule links to the proper Leptonica and tesseract_3.05 sources added.

It looks like you've downloaded master sources for both of them. At the moment VS2015_Tesseract is not compatible with it.

Proper dependency links are: leptonica @ e98a794 and tesseract_3.05 @ 7fe95f0. Download it and try to rebuild the solution.

回答2:

After adding in C/C++ -> Additional Include libraries:

C:\Users\Jihed Mestiri\Documents\VS2015_Tesseract-master\liblept
C:\Documents\VS2015_Tesseract-master\leptonica\src
C:\Users\Documents\VS2015_Tesseract-master\tesseract_3.05\wordrec
C:\Users\Documents\VS2015_Tesseract-master\tesseract_3.05\opencl
C:\Users\Documents\VS2015_Tesseract-master\tesseract_3.05\viewer
C:\Users\Documents\VS2015_Tesseract-master\tesseract_3.05\textord
C:\Users\Documents\VS2015_Tesseract-master\tesseract_3.05\neural_networks\runtime
C:\Users\Documents\VS2015_Tesseract-master\tesseract_3.05\dict
C:\Users\Documents\VS2015_Tesseract-master\tesseract_3.05\cutil
C:\Users\Documents\VS2015_Tesseract-master\tesseract_3.05\cube
C:\Users\Documents\VS2015_Tesseract-master\tesseract_3.05\classify
C:\Users\Documents\VS2015_Tesseract-master\tesseract_3.05\ccstruct
C:\Users\Documents\VS2015_Tesseract-master\tesseract_3.05\ccutil
C:\Users\Documents\VS2015_Tesseract-master\tesseract_3.05\ccmain
C:\Users\Documents\VS2015_Tesseract-master\tesseract_3.05\api
C:\Users\Documents\VS2015_Tesseract-master\tesseract_3.05\vs2010\port

as well as the directory that contains .lib files in Linker -> General -> Additional Library directories and included in Linker -> Input -> Additional dependencies these .lib files of Tesseract and Leptonica:

libtesseract.lib
giflib.lib
libjpeg.lib
liblept.lib
libpng.l‌ib
libtiff.lib
li‌bwe‌bp.lib
openjpeg.lib
‌zlib.lib

Compilation errors of my test program changed to:

1>------ Build started: Project: RedEyeRemover, Configuration: Debug x64 ------
1>LINK : fatal error LNK1104: cannot open file 'libpng.l‌ib'
1>Done building project "RedEyeRemover.vcxproj" -- FAILED.
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

Whereas the directory that contains libpng.lib file is included in Linker->General.

The parameters are taken from tesseract/tesseract.vcxproj that I build from VS2015_Tesseract

What can be the reason behind that error? and is there a way to verify that tesseract.vcxproj is working correctly at its own? because I get errors when I compile it too on Visual Studio 2017 (using v140 = VS 2015 version for build) on x64 target.

EDIT: SOLUTION: I discovered that the problem was in Linker -> General -> Additional Library directories where I had a space in one of the parent directory of the path e.g: "xxx xxx/tesseract". => avoid using paths with space.

来源：https://stackoverflow.com/questions/45485671/tesseract-3-05-build-errors-in-visual-studio-2017

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c++

visual-studio-2017

tesseract