[question] Install the OpenCV/4.10.0 dependency xz_utils/5.4.5 ERROR

[QingXu-hub]

Install the OpenCV/4.10.0 dependency xz_utils/5.4.5 ERROR

my profile:

Profile host:
[settings]
arch=x86_64
build_type=Debug
compiler=gcc
compiler.cppstd=gnu17
compiler.libcxx=libstdc++11
compiler.version=14
os=Windows

Profile build:
[settings]
arch=x86_64
build_type=Debug
compiler=gcc
compiler.cppstd=gnu17
compiler.libcxx=libstdc++11
compiler.version=14
os=Windows

---

The following error occurred when I installed the OpenCV/4.10.0 dependency xz_utils/5.4.5

Is this because I use the MinGW toolchain? How to fix it?

Have you read the CONTRIBUTING guide?

• I've read the CONTRIBUTING guide

[valgur]

Run the command with increased verbosity as a start (-vvv). Maybe the stack trace is more informative.

[memsharded]

Hi @QingXu-hub

Thanks for your question.

It would be necessary to have some more details:

• The exact command to reproduce (better if reduced to the minimal, like if the error is xz_utils, something like conan install --requires=xz_utils/5.4.5 --build=xz_utils/5.4.5 ... would be better
• The full output of the command, better with verbose output
• The conan version command output

[memsharded]

Just to follow up, using the mingw toolchain instead of Visual Studio (which is the default and the one used to build and test recipes in ConanCenter), typically a bit more configuration is needed than the one showed in the above profiles like:

• tools.build:compiler_executables definition
• Definition of [buildenv] with some env-vars like CC/CXX, and/or adding the mingw path to the PATH env-var

[QingXu-hub]

You mean Conan profile? My Conan profile Settings have been set for mingw Toolchain. And I have added the mingw path to the PATH env-var.

The contents of my conanfile.py file are as follows:

And the command I use when following OpenCV is conan install. --build=missing.
The first 24 of OpenCV 46 dependencies were installed successfully, but the error mentioned earlier occurred when installing xz_utils.

Checking when installing xz_utils. Then came a series of warnings and finally an error. There's too much output from the terminal. I've only taken a few.

[memsharded]

Thanks for the feedback.

It is recommended to share it as text not as images. Github can do block quoting and syntax highlighting, so it is much better to do as text, as it allows copy&paste, it is much faster to load, Github search allows to find things, etc. And also you can add way longer output text, the full output if necessary (and it can use a "collapse/expand" link for convenience).

The conanfile.py is not necessary, you should be able to reproduce with:

conan install --requires=xz_utils/5.4.5 --build=xz_utils/5.4.5

Which also greatly helps to reduce the output logs, reduce the noise and focus on the problem.

I'd say it is possible that the mingw profile is missing some more settings, if you check https://docs.conan.io/2/examples/dev_flow/tool_requires/mingw.html, you will see there are other settings such as:

compiler.threads=posix
compiler.exception=sjlj

which can affect how mingw is building.