[package] vdpau/system: test fails on CentOS 8 (and AlmaLinux)

[daravi]

On CentOS 8 (And the successor AlmaLinux) the test fails:

vdpau/system@3rdparty/stable (test package): Running test()
Failed to open VDPAU backend libvdpau_va_gl.so: cannot open shared object file: No such file or directory
vdp_device_create_x11 failed

And I see:

$ repoquery -l libvdpau-devel
/usr/include/vdpau
/usr/include/vdpau/vdpau.h
/usr/include/vdpau/vdpau_x11.h
/usr/lib/libvdpau.so
/usr/lib/pkgconfig/vdpau.pc
/usr/include/vdpau
/usr/include/vdpau/vdpau.h
/usr/include/vdpau/vdpau_x11.h
/usr/lib64/libvdpau.so
/usr/lib64/pkgconfig/vdpau.pc

There seems to have been a libvdpau-va-gl package on CentOS 7 but nothing I can find for CentOS 8. Is the presence of this library essential? If so is there a package for CentOS 8 that provides this that we could add here?

Package and Environment Details (include every applicable attribute)

• Package Name/Version: vdpau/system
• Operating System+version: AlmaLinux 8.4
• Compiler+version: LLVM 10.0.1
• Conan version: conan 1.38.0
• Python version: Python 3.9.6

Conan profile:

Configuration for profile default:

[settings]
os=Linux
os_build=Linux
os.kernel=4.18
arch=x86_64
arch_build=x86_64
compiler=clang
compiler.version=10
compiler.libcxx=libc++
compiler.cppstd=17
build_type=Release
[options]
[conf]
[build_requires]
[env]
m4:LDFLAGS=['-rtlib=compiler-rt']

[ericLemanissier]

FYI, centos 8 works on https://github.com/bincrafters/system-packages-checks/runs/3397659245?check_suite_focus=true#step:6:1006 so the system package seems to exist. can you remove ~/.conan/data/vdpau folder and retry ?

[daravi]

@ericLemanissier You are right this error does not happen when I try on another CentOS 8 systems (I am actually using AlmaLinux). I have to figure out why my compilation tries to load libvdpau_va_gl.so while on other CentOS 8 systems this does not happen. Any ideas how I can debug that?

[ericLemanissier]

please remove ~/.conan/data/vdpau folder, retry whatever failed, send us the exact conan command you are running with the full console log.

[daravi]

@ericLemanissier Sure. Here we go:

$ conan remove vdpau/system@
Are you sure you want to delete from 'vdpau/system' (yes/no): yes
$ conan create . vdpau/system@ -r conancenter
Exporting package recipe
vdpau/system: A new conanfile.py version was exported
vdpau/system: Folder: /opt/conan/vdpau/system/_/_/export
vdpau/system: Exported revision: 2b0fc2b7a6b6a4825e7f49e9bae77f0d
Configuration:
[settings]
arch=x86_64
arch_build=x86_64
build_type=Release
compiler=clang
compiler.cppstd=17
compiler.libcxx=libc++
compiler.version=10
os=Linux
os.kernel=4.18
os_build=Linux
[options]
[build_requires]
[env]
m4:LDFLAGS=[-rtlib=compiler-rt]
vdpau/system: Forced build from source
vdpau/system (test package): Installing package
Requirements
    vdpau/system from local cache - Cache
    xorg/system from 'conancenter' - Cache
Packages
    vdpau/system:5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9 - Build
    xorg/system:5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9 - Cache

Installing (downloading, building) binaries...
vdpau/system: WARN: Don't know how to install vdpau for your distro.
vdpau/system: Configuring sources in /opt/conan/vdpau/system/_/_/source
vdpau/system: Copying sources to build folder
vdpau/system: Building your package in /opt/conan/vdpau/system/_/_/build/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9
vdpau/system: Generator txt created conanbuildinfo.txt
vdpau/system: Calling build()
vdpau/system: WARN: This conanfile has no build step
vdpau/system: Package '5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9' built
vdpau/system: Build folder /opt/conan/vdpau/system/_/_/build/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9
vdpau/system: Generated conaninfo.txt
vdpau/system: Generated conanbuildinfo.txt
vdpau/system: Generating the package
vdpau/system: Package folder /opt/conan/vdpau/system/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9
vdpau/system: Calling package()
vdpau/system: WARN: This conanfile has no package step
vdpau/system package(): WARN: No files in this package!
vdpau/system: Package '5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9' created
vdpau/system: Created package revision d8db948171c720b36f90e05afe510f97
xorg/system: Already installed!
vdpau/system (test package): Generator txt created conanbuildinfo.txt
vdpau/system (test package): Generator cmake created conanbuildinfo.cmake
vdpau/system (test package): Generated conaninfo.txt
vdpau/system (test package): Generated graphinfo
Using lockfile: '/home/puya/src/conan-center-index/recipes/vdpau/all/test_package/build/488f62e77970b94316f1f3610f3a89cfc4754e50/conan.lock'
Using cached profile from lockfile
vdpau/system (test package): Calling build()
-- The C compiler identification is Clang 10.0.1
-- The CXX compiler identification is Clang 10.0.1
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /opt/llvm/bin/clang - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /opt/llvm/bin/clang++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Conan: called by CMake conan helper
-- Conan: Adjusting output directories
-- Conan: Using cmake global configuration
-- Conan: Adjusting default RPATHs Conan policies
-- Conan: Adjusting language standard
-- Conan setting CPP STANDARD: 17 WITH EXTENSIONS OFF
-- Conan: Compiler Clang>=8, checking major version 10
-- Conan: Checking correct version: 10
-- Conan: C++ stdlib: libc++
-- Configuring done
-- Generating done
CMake Warning:
  Manually-specified variables were not used by the project:

    CMAKE_EXPORT_NO_PACKAGE_REGISTRY
    CMAKE_INSTALL_BINDIR
    CMAKE_INSTALL_DATAROOTDIR
    CMAKE_INSTALL_INCLUDEDIR
    CMAKE_INSTALL_LIBDIR
    CMAKE_INSTALL_LIBEXECDIR
    CMAKE_INSTALL_OLDINCLUDEDIR
    CMAKE_INSTALL_SBINDIR


-- Build files have been written to: /home/puya/src/conan-center-index/recipes/vdpau/all/test_package/build/488f62e77970b94316f1f3610f3a89cfc4754e50
Scanning dependencies of target test_package
[ 50%] Building C object CMakeFiles/test_package.dir/test_package.c.o
[100%] Linking C executable bin/test_package
[100%] Built target test_package
vdpau/system (test package): Running test()
Failed to open VDPAU backend libvdpau_va_gl.so: cannot open shared object file: No such file or directory
vdp_device_create_x11 failed

Please disregard vdpau/system: WARN: Don't know how to install vdpau for your distro., I have a PR for that here:
conan-io/conan#9463

I have manually installed libvdpau-devel that is needed for my distro (AlmaLinux, which also has yum).

[ericLemanissier]

what does pkgconf --libs-only-l vdpau print ? What is the content of your system's vdpau.pc ?

[daravi]

$ pkgconf --libs-only-l vdpau
-lvdpau 
$ cat /usr/lib64/pkgconfig/vdpau.pc
prefix=/usr
libdir=${prefix}/lib64
includedir=${prefix}/include

moduledir=/usr/lib64/vdpau

Name: VDPAU
Description: The Video Decode and Presentation API for UNIX
Version: 1.4
Libs: -L${libdir} -lvdpau
Cflags: -I${includedir}

[ericLemanissier]

ok, so it's basically your system vdpau library which tries to load at runtime libvdpau_va_gl.so. It should happen also if you manually compile the recipe's test_package.c , link it with -lvdpau and run the executable. If it still fails, you should report this problem to your distro maintainer, because it's not related to conan AFAIU.