How to build javacpp-presets on windows

[chinadragon0515]

Per this issue bytedeco/javacv#196, I want to build javacpp and javacpp-presets.

I am using windows system, and I find a guide https://github.com/bytedeco/javacpp-presets/wiki/Building-on-Windows, my questions are,

1. If I already download opencv 3.0.0, can I avoid to build it but make some changes point to it? If yes, where I need to make the changes?
2. Can I run the mvn build with eclipse directly, but not need env. like mssy2?

thanks.

[saudet]

What "changes" are you referring to?

We can run Maven from Eclipse, sure, no problem. What issues are you encountering?

[chinadragon0515]

This is the exception I got when I run in maven directly, it looks for a opencv file and fail to find it,

[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 12.417 s
[INFO] Finished at: 2015-08-24T19:11:34+08:00
[INFO] Final Memory: 23M/286M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.bytedeco:javacpp:1.0:build (generate-sources) on project opencv: Failed to execute JavaCPP Builder: Could not parse "opencv2\hal\defs.h": File does not exist -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.

[saudet]

I see, you want to change the include and link directories. That can be done by adjusting the values in the pom.xml file here:
https://github.com/bytedeco/javacpp-presets/blob/master/pom.xml#L153
It's not very user friendly. It's usually easier to just use cppbuild.sh.

[chinadragon0515]

I made the changes, and met the issue again, and I search pre-built opencv 3.0, there is no face.hpp, is this a known issue or I need to build opencv first? Or follow this guide https://github.com/bytedeco/javacpp-presets/wiki/Building-on-Windows is recommended? And note I only want to build opencv now. thanks.

[INFO] Parsing D:\Project\javacv\opencv\opencv3.0\build\include\opencv2\imgproc.hpp
[ERROR] Failed to execute JavaCPP Builder: Could not parse "opencv2\face.hpp": File does not exist
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 34.325 s
[INFO] Finished at: 2015-08-24T19:22:07+08:00
[INFO] Final Memory: 27M/712M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.bytedeco:javacpp:1.0:build (generate-sources) on project opencv: Failed to execute JavaCPP Builder: Could not parse "opencv2\face.hpp": File does not exist -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException

[saudet]

We can remove opencv_face.java from the presets if you are not interested by that module...

[chinadragon0515]

The new exception is

[ERROR] Failed to execute JavaCPP Builder: Could not parse "opencv2\xfeatures2d.hpp": File does not exist

Do we know what's the root cause for this? Is there a defect on this part?

And I tried to follow windows build guide, my computer failed to install window SDK, can I build in msys shell?

Do we have some plan to build javacv 1.0 with face recognizer? thanks.

[saudet]

Again, if you're not interested in the xfeatures2d module, just delete opencv_xfeatures2d.java from the presets.

The compiler as part of the SDK is gone. Just install Visual Studio instead.

Sure, there's eventually going to be a release.

[chinadragon0515]

No luck,
need it try to use VC command "cl" to build, but I do not have VC, I only have mingw,

[INFO] cl /ID:\Project\javacv\opencv\opencv3.0\build\include "/IC:\Program Files\Java\jdk1.8.0_40\include" "/IC:\Program Files\Java\jdk1.8.0_40\include\win32" D:\dev\eclipsews-luna\javacpp-presets-master\opencv\target\classes\org\bytedeco\javacpp\jnicvkernels.cpp /fp:fast /W3 /Oi /O2 /EHsc /Gy /GL /MD /LD /link /OUT:D:\dev\eclipsews-luna\javacpp-presets-master\opencv\target\classes\org\bytedeco\javacpp\windows-x86_64\jnicvkernels.dll /LIBPATH:D:\Project\javacv\opencv\opencv3.0\build\x64\mingw\lib\ opencv_imgproc300.lib opencv_core300.lib 
[ERROR] Failed to execute JavaCPP Builder: Cannot run program "cl": CreateProcess error=2, The system cannot find the file specified

My question is can I specified the compiler to mingw? If yes, can you help to show how? thanks

[saudet]

OpenCV supports better MSVC, and it's free anyway, so I don't feel there's any reason to not use it...?

[saudet]

I've documented the build environments on this wiki page:
https://github.com/bytedeco/javacpp-presets/wiki/Build-Environments#windows-x86-and-x86_64
Please follow those instructions.