********************************************************************************
conan install openscenegraph/3.6.5@ --profile=/home/conan/w/BuildSingleReference/5511/2f3a62f4-6500-4965-a8ec-33a2d6a3138d/profile.txt --build=openscenegraph
********************************************************************************
Configuration:
[settings]
arch=x86_64
arch_build=x86_64
build_type=Release
compiler=clang
compiler.libcxx=libstdc++
compiler.version=10
os=Linux
os_build=Linux
[options]
openscenegraph:shared=False
[build_requires]
[env]

openscenegraph/3.6.5: Forced build from source
Installing package: openscenegraph/3.6.5
Requirements
    brotli/1.0.9 from 'conan-center' - Cache
    bzip2/1.0.8 from 'conan-center' - Cache
    expat/2.2.10 from 'conan-center' - Cache
    fontconfig/2.13.92 from 'conan-center' - Cache
    freetype/2.10.4 from 'conan-center' - Cache
    giflib/5.2.1 from 'conan-center' - Cache
    jbig/20160605 from 'conan-center' - Cache
    libdeflate/1.7 from 'conan-upstream' - Cache
    libjpeg/9d from 'conan-center' - Cache
    libpng/1.6.37 from 'conan-center' - Cache
    libtiff/4.2.0 from 'conan-upstream' - Cache
    libuuid/1.0.3 from 'conan-center' - Cache
    libwebp/1.1.0 from 'conan-center' - Cache
    opengl/system from 'conan-center' - Cache
    openscenegraph/3.6.5 from 'conan-upstream' - Cache
    xorg/system from 'conan-center' - Cache
    xz_utils/5.2.5 from 'conan-center' - Cache
    zlib/1.2.11 from 'conan-center' - Cache
    zstd/1.4.8 from 'conan-center' - Cache
Packages
    brotli/1.0.9:2b1e5ff9df96aaf5924c273e1368c632fcb32dd2 - Cache
    bzip2/1.0.8:7335ce7557cf2fc68688ae880c61a352969fba18 - Cache
    expat/2.2.10:2b1e5ff9df96aaf5924c273e1368c632fcb32dd2 - Cache
    fontconfig/2.13.92:cb9ac578164cc811ba7e222039ee3b058865eb1a - Cache
    freetype/2.10.4:2ce3187c0ffe7ebdc152ff94745e7ef426e7e038 - Cache
    giflib/5.2.1:2b1e5ff9df96aaf5924c273e1368c632fcb32dd2 - Cache
    jbig/20160605:d378d7b97beb0c4214ac7566e4c2068acdbb6503 - Cache
    libdeflate/1.7:2b1e5ff9df96aaf5924c273e1368c632fcb32dd2 - Cache
    libjpeg/9d:2b1e5ff9df96aaf5924c273e1368c632fcb32dd2 - Cache
    libpng/1.6.37:3ae3b4df51cacee433635ae8e8d85cb3673a03ac - Cache
    libtiff/4.2.0:77bd95c47980edf947bf825ea83882d213f41772 - Cache
    libuuid/1.0.3:2b1e5ff9df96aaf5924c273e1368c632fcb32dd2 - Cache
    libwebp/1.1.0:f39a0553a66326d18920536800aab391c6b04d5a - Cache
    opengl/system:5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9 - Cache
    openscenegraph/3.6.5:8d2248237f02ae0bc0257b8e4021a2fe4088737e - Build
    xorg/system:5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9 - Cache
    xz_utils/5.2.5:2b1e5ff9df96aaf5924c273e1368c632fcb32dd2 - Cache
    zlib/1.2.11:2b1e5ff9df96aaf5924c273e1368c632fcb32dd2 - Cache
    zstd/1.4.8:2b1e5ff9df96aaf5924c273e1368c632fcb32dd2 - Cache

Installing (downloading, building) binaries...
brotli/1.0.9: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
bzip2/1.0.8: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
expat/2.2.10: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
giflib/5.2.1: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
jbig/20160605: Already installed!
jbig/20160605: Appending PATH environment variable: /home/conan/w/BuildSingleReference/.conan/data/jbig/20160605/_/_/package/d378d7b97beb0c4214ac7566e4c2068acdbb6503/bin
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
libdeflate/1.7: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
libjpeg/9d: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
libuuid/1.0.3: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
libwebp/1.1.0: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
opengl/system: Already installed!
ERROR: opengl/system: Error in package_info() method, line 80
	self._fill_cppinfo_from_pkgconfig('gl')
while calling '_fill_cppinfo_from_pkgconfig', line 20
	if not pkg_config.provides:
	ConanException: pkg-config command ['pkg-config', '--print-provides', 'gl', '--print-errors'] failed with error: Command 'pkg-config --print-provides gl --print-errors' returned non-zero exit status 127.
/bin/sh: 1: pkg-config: not found