Need help on building OpenCV with CUDA #1609

jasjuang · 2017-08-08T06:06:57Z

I am on vs2015, x64-windows. I am attempting to build OpenCV with CUDA by simply changing the -DWITH_CUDA=OFF to -DWITH_CUDA=ON. In the end I get a compilation error,

"C:\dev\vcpkg\buildtrees\opencv\x64-windows-rel\install.vcxproj" (default target) (1) ->
       "C:\dev\vcpkg\buildtrees\opencv\x64-windows-rel\ALL_BUILD.vcxproj" (default target) (3) ->
       "C:\dev\vcpkg\buildtrees\opencv\x64-windows-rel\modules\cudaimgproc\opencv_cudaimgproc.vcxproj" (default target) (22) ->
       (CustomBuild target) -> 
         C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v8.0\include\thrust/detail/integer_traits.h(68): error C2137: empty character constant [C:\dev\vcpkg\buildtrees\opencv\x64-windows-rel\modules\cudaimgproc\opencv_cudaimgproc.vcxproj]


       "C:\dev\vcpkg\buildtrees\opencv\x64-windows-rel\install.vcxproj" (default target) (1) ->
       "C:\dev\vcpkg\buildtrees\opencv\x64-windows-rel\ALL_BUILD.vcxproj" (default target) (3) ->
       "C:\dev\vcpkg\buildtrees\opencv\x64-windows-rel\modules\cudafeatures2d\opencv_cudafeatures2d.vcxproj" (default target) (18) ->
         C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v8.0\include\thrust/detail/integer_traits.h(68): error C2137: empty character constant [C:\dev\vcpkg\buildtrees\opencv\x64-windows-rel\modules\cudafeatures2d\opencv_cudafeatures2d.vcxproj]

    5767 Warning(s)
    2 Error(s)

But the problem is I am unable to reproduce this when building from source with the same cmake options. The module opencv_cudafeatures2d compiles successfully. The whole thing compiles successfully. I browsed through the fix patches for opencv in vcpkg, and nothing looks like it could cause a problem. Could anyone give me some insights?

The text was updated successfully, but these errors were encountered:

icedream2linxi · 2017-08-17T15:06:36Z

When using "-Xcompiler utf-8", you can reproduce the problem.

当使用"-Xcompiler utf-8"时，可以重现问题现象。

G:\Temp\tt>nvcc tt.cu -o tt.obj -Xcompiler ,\"/utf-8\"
nvcc warning : The 'compute_20', 'sm_20', and 'sm_21' architectures are deprecated, and may be removed in a future release (Use -Wno-deprecated-gpu-targets to suppress warning).
tt.cu
C:/Program Files (x86)/Microsoft Visual Studio 14.0/VC/BIN/../../VC/INCLUDE\stdint.h(32): warning C4828: The file contains a character starting at offset 0x9aadf that is illegal in the current source character set (codepage 65001).
tt.cu(22): error C2137: empty character constant

tt.cu

#include <limits>
#include <cstdint>

template<typename T>
class integer_traits
{
public:
	static const bool is_integral = false;
};

template<typename T, T min_val, T max_val>
class integer_traits_base
{
public:
	static const bool is_integral = true;
	static const T const_min = min_val;
	static const T const_max = max_val;
};

template<>
class integer_traits<unsigned char>
	: public std::numeric_limits<unsigned char>,
	public integer_traits_base<unsigned char, 0, UCHAR_MAX>
{};

jasjuang · 2017-08-20T17:45:33Z

@icedream2linxi Thanks a lot for identifying the problem. I am able to reproduce it with your code. Now I just have to figure out a way to turn off "-Xcompiler utf-8" when compiling. Problem is I have no idea how to adjust the compilation flags in vcpkg. Can @ras0219-msft @KindDragon give me some pointers?

ras0219-msft · 2017-08-21T02:05:31Z

This is probably being percolated from the /utf-8 we pass into our base compiler flags[1]. The ideal fix would be to patch the sources to be pure utf-8 (or better, ascii). However, if that won't work, it should be possible to override the charset.

Here're the relevant docs:
https://docs.microsoft.com/en-us/cpp/build/reference/utf-8-set-source-and-executable-character-sets-to-utf-8

[1] https://github.com/Microsoft/vcpkg/blob/91e7d010999afd137c128b61c4df27b39a645d0f/scripts/cmake/vcpkg_configure_cmake.cmake#L130

jasjuang · 2017-08-21T21:20:43Z

@ras0219-msft I don't think it's appropriate to patch the source, because CUDA is actually installed separately by it's own installer.

I manually remove the /utf-8 in vcpkg_configure_cmake.cmake and it actually compiles. But I am unable to patch it in the opencv portfile. I tried

string(REPLACE "/utf-8" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")

but it didn't work. Could you give me some pointers on how to remove the utf-8 flag in the opencv portfile?

However, after removing the utf-8 flag manually, opencv compiles successfully in release mode but fails to compile in debug mode. Again, I wasn't able to reproduce this if I build OpenCV from source. Below is the error message when OpenCV is compiled in debug mode,

 "C:\dev\vcpkg\buildtrees\opencv\x64-windows-dbg\install.vcxproj" (default target) (1) ->
       "C:\dev\vcpkg\buildtrees\opencv\x64-windows-dbg\ALL_BUILD.vcxproj" (default target) (3) ->
       "C:\dev\vcpkg\buildtrees\opencv\x64-windows-dbg\modules\cudaobjdetect\opencv_cudaobjdetect.vcxproj" (default target) (39) ->
       (CustomBuild target) -> 
         CUSTOMBUILD : CMake error : CMake can not determine linker language for target: cmTC_b741d [C:\dev\vcpkg\buildtrees\opencv\x64-windows-dbg\modules\cudaobjdetect\opencv_cudaobjdetect.vcxproj]


       "C:\dev\vcpkg\buildtrees\opencv\x64-windows-dbg\install.vcxproj" (default target) (1) ->
       "C:\dev\vcpkg\buildtrees\opencv\x64-windows-dbg\ALL_BUILD.vcxproj" (default target) (3) ->
       "C:\dev\vcpkg\buildtrees\opencv\x64-windows-dbg\modules\videostab\opencv_videostab.vcxproj" (default target) (79) ->
         CUSTOMBUILD : CMake error : CMake can not determine linker language for target: cmTC_38cb2 [C:\dev\vcpkg\buildtrees\opencv\x64-windows-dbg\modules\videostab\opencv_videostab.vcxproj]

    2689 Warning(s)
    2 Error(s)

@icedream2linxi Can you help me again on identifying where this compilation error is from ?

KindDragon · 2017-08-21T21:58:30Z

I tried

string(REPLACE "/utf-8" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
but it didn't work.

Try to do same for C compiler CMAKE_C_FLAGS

jasjuang · 2017-08-21T22:06:28Z

@KindDragon I added that line too but it didn't work unfortunately

icedream2linxi · 2017-08-24T08:19:25Z

I have also seen this error, did not appear again after building it again.

我这里也出现过这样的错误，再编译一遍后没出现。

jasjuang · 2017-08-25T17:35:11Z

@icedream2linxi I tried rebuilding it 3 times and still see the error... What did you change before building it again?

icedream2linxi · 2017-08-26T03:28:02Z

I manually remove the /utf-8 in vcpkg_configure_cmake.cmake.

portfile.cmake:
WITH_CUDA=ON
WITH_CUBLAS=ON

icedream2linxi · 2017-08-26T03:37:18Z

Building environment:
OS: Windows 10 Enterprise Version 1703 x64 Enlish
Code Page: 936
VS: Visual Studio Enterprise 2015 Version 14.0.25431.01 Update 3 English
CUDA: Version 8.0.61
vcpkg: 57d078e
cmake: 3.9.1-win32-x86

triplet: x64-windows

icedream2linxi · 2017-08-26T13:37:44Z

Today, I rebuilding it 2 times. No error. 😿

config-x64-windows-dbg-out.txt
config-x64-windows-rel-out.txt

icedream2linxi · 2017-08-26T14:37:55Z

I building it on another computer. No error.

我在另外一台电脑上进行了编译。没有错误。

config-x64-windows-dbg-out.txt
config-x64-windows-rel-out.txt

jasjuang · 2017-08-26T16:35:03Z

@icedream2linxi could you try building with the opencv 3.3 PR #1619 with CUDA enabled?

cmpute · 2018-02-17T09:01:14Z

I have also encountered the "CMake can not determine linker language for target" error

sparsebase · 2018-02-28T05:53:24Z

@cmpute After applying your PR #2809 and using the platform toolset v140 with VS2017, I have ran into this exact problem. Strange thing is if I directly build and install the solution file created in the buildtree, it works perfectly. Were you able to install opencv[cuda] successfully?

sparsebase · 2018-03-06T09:21:43Z

This issue seems disappeared with CUDA 9.1 when using with platform toolset v140 under VS2017.

jasjuang · 2018-03-26T22:40:14Z

I just tried with the latest master and it actually compiles now

jasjuang mentioned this issue Aug 8, 2017

update opencv and enable contrib #1619

Merged

ras0219-msft added the category:port-feature The issue is with a library, which is requesting new capabilities that didn’t exist label Aug 9, 2017

jasjuang mentioned this issue Feb 8, 2018

OpenCV build with CUDA fails #2749

Closed

jasjuang closed this as completed Mar 26, 2018

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Need help on building OpenCV with CUDA #1609

Need help on building OpenCV with CUDA #1609

jasjuang commented Aug 8, 2017

icedream2linxi commented Aug 17, 2017

jasjuang commented Aug 20, 2017

ras0219-msft commented Aug 21, 2017

jasjuang commented Aug 21, 2017

KindDragon commented Aug 21, 2017

jasjuang commented Aug 21, 2017

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jasjuang commented Mar 26, 2018

Need help on building OpenCV with CUDA #1609

Need help on building OpenCV with CUDA #1609

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jasjuang commented Aug 8, 2017

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ras0219-msft commented Aug 21, 2017

jasjuang commented Aug 21, 2017

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