CODEWITHSUNDEEP
windowscmakecompilationmingwtesseract
Arnaud Loyer
Arnaud Loyer

Reputation: 1

Custom Compiling Tesseract-ocr (4.0) on Windows

I'm desperately trying to compile Tesseract-ocr (4.0) on a Windows Machine with some restrictions.

Problem :

I have strong issue specifying custom paths for Tesseract. Under Unix (CentOS, Ubuntu 16/18, Debian 8/9 ..), I was able to achieve my goal with the tools autogen autoconf autoheaders pkg-config.

Under Windows, autoconf-archive and pkg-config are unavailable (from what I tried) ; rendering autoconf unusable. I was neither able to compile using CMake and specifying a custom path for Leptonica (even after writing a new pkgconfig for leptonica).

Things I tried :

Things that work on Linux :

Things I have not tried :

Possible Solutions

Thank your for your interest.

EDIT 1

By trying various ways of manually installing pkg-config, Autoconf seemed to be unaware of its presence. This error was about pkg-config missing package (How to install pkg config in windows?).

CPPAN was deeply part of the visual studio project and I couldn't see how I could separate them.

I usually tell configure to look for leptonica package with the arguments --with-extra-libraries and PKG_CONFIG_PATH. CMake however, uses the "macro" find_package(Leptonica $PATH CONFIG REQUIRED). By looking at it a little bit, I was (maybe) able to specify its path with CMAKE_PREFIX_PATH, CMAKE_MODULE_PATH, Leptonica_DIR. The compilation was still unsuccessfull due to missing config files (LeptonicaConfig.cmake or leptonica-config.cmake).

I pointed theses variables to various folders of the leptonica folder after building it. For information, I built Leptonica with its configure as such :

bash configure --enable-shared=false --without-giflib --without-libwebp --without-libopenjpeg LDFLAGS="-LPATH/TO/ZLIB -LPATH/TO/LIBPNG .." CPPFLAGS="-IPATH/TO/ZLIB/INCLUDE ..."

I, however, was unable to locate theses files (while seeing a LeptonicaConfig.cmake.in under LeptonicaDir/cmake/template)

I hope I answered your questions. Please tell me if you need further details.

Upvotes: 0

Views: 2255

Answers (1)

Amir Saniyan
Amir Saniyan

Reputation: 13739

To compile tesseract-4.0.0 on Windows with MSYS and MinGW:

Prerequisites:

Open Start Menu > MSYS2 64bit > MSYS2 MSYS and run the following commands:

$ pacman -Syu
#### Close terminal window and open it again (MSYS2 MSYS) ###
$ pacman -Su
$ pacman -S base-devel
$ pacman -S mingw-w64-i686-toolchain
$ pacman -S mingw-w64-x86_64-toolchain
$ pacman -S mingw-w64-i686-cmake
$ pacman -S mingw-w64-x86_64-cmake

32-bit Compilation:

Open Start Menu > MSYS2 64bit > MSYS2 MinGW 32-bit and run the following commands:

$ cd /home/tesseract/tesseract-4.0.0
$ pacman -S mingw-w64-i686-leptonica
$ ./autogen.sh
$ ./configure --prefix=/home/tesseract/install/windows-i686
$ make -j4
$ make install

64-bit Compilation:

Open Start Menu > MSYS2 64bit > MSYS2 MinGW 64-bit and run the following commands:

$ cd /home/tesseract/tesseract-4.0.0
$ pacman -S mingw-w64-x86_64-leptonica
$ ./autogen.sh
$ ./configure --prefix=/home/tesseract/install/windows-x86_64
$ make -j4
$ make install

The compiled tesseract will be installed on: C:/msys64/home/tesseract/install

Upvotes: 1

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