Compilation failed: V6.19/01(github master) with VS2019

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ROOT Version: 6.19/01 (github master)
Platform: Win10
Compiler: VS2019 (Windows SDK: 10.0.17763.0)

While compiling the ROOT V6.19, a fatal error is given in the “onepcm” project. The error message as follow:

131>------ 已启动生成: 项目: ***onepcm***, 配置: ***Debug Win32*** ------
131>Generating etc/allDict.cxx.pch
131>Generating PCH for bindings\pyroot core core\clingutils core\rint core\thread graf2d\asimage graf2d\gpad graf2d\graf graf2d\postscript graf2d\win32gdk graf3d\g3d graf3d\gl gui\fitpanel gui\gui hist\hist hist\histpainter hist\spectrum hist\spectrumpainter io\io math\genvector math\mathcore math\matrix math\minuit math\physics math\smatrix math\vecops net\net tree\tree tree\treeplayer tree\treeviewer
131><<< cling interactive line includer >>>:1:10: ***fatal error***: 'Files' file not found
131>#include "Files"
131>         ^~~~~~~
131>CUSTOMBUILD : error : Parsing Linkdef file etc\dictpch\allLinkDefs.h
131>已完成生成项目“*onepcm.vcxproj*”的操作 - ***Fail***。
132>------ 已启动生成: 项目: hsimple, 配置: Debug Win32 ------
132>Generating tutorials/hsimple.root
132>CUSTOMBUILD : error : unable to read PCH file G:/root-master-619/build\etc\/allDict.cxx.pch: 'no such file or directory'
132>CUSTOMBUILD : fatal error : PCH file 'G:/root-master-619/build\etc\/allDict.cxx.pch' not found: module file not found
132>已完成生成项目“**hsimple.vcxproj**”的操作 - ***Fail***。

Please help.


How did you configure exactly (with which options)?

Cheers, Bertrand.

Here is the options:


Could you try to copy your fftw library files into another location, without spaces in the path (i.e. not in C:\Program Files (x86)\fftw, but somewhere like C:\libs\fftw) and try again?
Or you could also try without fftw to see if it works…

It does not work, and gives the same error.
PS, for the ROOT V6.17 with the same fttw path, it works well.

Thank you very much for your time.


Could you attach your CMakeCache.txt?

CMakeCache.txt (105.0 KB)

Here is the file.

Thank you!

Could you try to modify also these paths (you can do it in the cmake-gui interface):

//Specify the directory containing fftw3.h
FFTW_INCLUDE_DIR:PATH=C:/Program Files (x86)/fftw/include

//Specify the fttw3 library here.
FFTW_LIBRARY:FILEPATH=C:/Program Files (x86)/fftw/lib/fftw3.lib

//Dependencies for the target
FFTW_LIB_DEPENDS:STATIC=general;Core;general;MathCore;general;C:/Program Files (x86)/fftw/lib/fftw3.lib;

You’re very welcome! :slight_smile:

CMakeCache.txt (104.9 KB)

It does not work. Here is the CMakeCache.txt.

Thank you for your time!

OK, so I’ll try to reproduce the problem and I’ll let you know.

Cheers, Bertrand.

1 Like

Can you post the allHeaders.h, allLinkDefs.h, and allCppflags.txt files (located in the build directory, under etc/dictpch)?

OK, I think I know where it is coming from. Please disable the python option (PyROOT doesn’t work on Windows anyway). It works if using Python from a different location than C:/Program Files (x86)/Microsoft Visual Studio/Shared/Python37_64 (e.g. C:\Python37_64)

I re-installed my python to “C:\python”, the compilation is successful.
I like ROOT very much!
Thank you for the excellent work!


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