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conan install xtl/0.6.21@ --build=xtl --profile=/home/conan/w/BuildSingleReference/61231/2b9b1b8d-8932-4864-9c79-6011584797d2/profile.txt
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Auto detecting your dev setup to initialize the default profile (/home/conan/w/BuildSingleReference/.conan/profiles/default)
CC and CXX: /usr/bin/gcc, /usr/bin/g++ 
Found gcc 6.4
gcc>=5, using the major as version

************************* WARNING: GCC OLD ABI COMPATIBILITY ***********************
 
Conan detected a GCC version > 5 but has adjusted the 'compiler.libcxx' setting to
'libstdc++' for backwards compatibility.
Your compiler is likely using the new CXX11 ABI by default (libstdc++11).

If you want Conan to use the new ABI for the default profile, run:

    $ conan profile update settings.compiler.libcxx=libstdc++11 default

Or edit '/home/conan/w/BuildSingleReference/.conan/profiles/default' and set compiler.libcxx=libstdc++11

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Default settings
	os=Linux
	os_build=Linux
	arch=x86_64
	arch_build=x86_64
	compiler=gcc
	compiler.version=6
	compiler.libcxx=libstdc++
	build_type=Release
*** You can change them in /home/conan/w/BuildSingleReference/.conan/profiles/default ***
*** Or override with -s compiler='other' -s ...s***


Configuration:
[settings]
arch=x86_64
build_type=Release
compiler=gcc
compiler.libcxx=libstdc++11
compiler.version=6
os=Linux
[options]
[build_requires]
[env]

xtl/0.6.21: Forced build from source
Installing package: xtl/0.6.21
Requirements
    xtl/0.6.21 from local cache - Cache
Packages
    xtl/0.6.21:5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9 - Build

Installing (downloading, building) binaries...
[HOOK - conan-center.py] pre_source(): [IMMUTABLE SOURCES (KB-H010)] OK
xtl/0.6.21: Configuring sources in /home/conan/w/BuildSingleReference/.conan/data/xtl/0.6.21/_/_/source

[HOOK - conan-center.py] post_source(): [LIBCXX MANAGEMENT (KB-H011)] OK
[HOOK - conan-center.py] post_source(): [CPPSTD MANAGEMENT (KB-H022)] OK
xtl/0.6.21: Building your package in /home/conan/w/BuildSingleReference/.conan/data/xtl/0.6.21/_/_/build/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9
xtl/0.6.21: Generator txt created conanbuildinfo.txt
xtl/0.6.21: Aggregating env generators
[HOOK - conan-center.py] pre_build(): [FPIC MANAGEMENT (KB-H007)] 'fPIC' option not found
[HOOK - conan-center.py] pre_build(): [FPIC MANAGEMENT (KB-H007)] OK
xtl/0.6.21: Calling build()
xtl/0.6.21: Package '5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9' built
xtl/0.6.21: Build folder /home/conan/w/BuildSingleReference/.conan/data/xtl/0.6.21/_/_/build/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9
xtl/0.6.21: Generated conaninfo.txt
xtl/0.6.21: Generated conanbuildinfo.txt
xtl/0.6.21: Generating the package
xtl/0.6.21: Package folder /home/conan/w/BuildSingleReference/.conan/data/xtl/0.6.21/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9
xtl/0.6.21: Calling package()
[HOOK - conan-center.py] post_package(): [PACKAGE LICENSE (KB-H012)] OK
[HOOK - conan-center.py] post_package(): [DEFAULT PACKAGE LAYOUT (KB-H013)] OK
[HOOK - conan-center.py] post_package(): [MATCHING CONFIGURATION (KB-H014)] OK
[HOOK - conan-center.py] post_package(): [SHARED ARTIFACTS (KB-H015)] OK
[HOOK - conan-center.py] post_package(): [PC-FILES (KB-H020)] OK
[HOOK - conan-center.py] post_package(): [CMAKE-MODULES-CONFIG-FILES (KB-H016)] OK
[HOOK - conan-center.py] post_package(): [PDB FILES NOT ALLOWED (KB-H017)] OK
[HOOK - conan-center.py] post_package(): [LIBTOOL FILES PRESENCE (KB-H018)] OK
[HOOK - conan-center.py] post_package(): [MS RUNTIME FILES (KB-H021)] OK
xtl/0.6.21 package(): Packaged 31 '.hpp' files
xtl/0.6.21 package(): Packaged 1 file: LICENSE
xtl/0.6.21 package(): Packaged 1 '.cmake' file: conan-official-xtl-targets.cmake
xtl/0.6.21: Package '5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9' created
xtl/0.6.21: Created package revision 9cb4a5a3217d2c4a1b8c0ea0d2a79984
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
Aggregating env generators
xtl/0.6.21: WARN: This conanfile has no build step