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conan install spectra/0.8.1@ --build=spectra --profile=/home/conan/w/BuildSingleReference/20942/1941032a-6eda-4ae7-aa68-a34762cbc4b7/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 4.9
Default settings
	os=Linux
	os_build=Linux
	arch=x86_64
	arch_build=x86_64
	compiler=gcc
	compiler.version=4.9
	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
arch_build=x86_64
build_type=Release
compiler=gcc
compiler.libcxx=libstdc++
compiler.version=4.9
os=Linux
os_build=Linux
[options]
[build_requires]
[env]

eigen/3.3.9: Not found in local cache, looking in remotes...
eigen/3.3.9: Trying with 'conan-center'...
Downloading conanmanifest.txt
Downloading conanfile.py
Downloading conan_export.tgz
eigen/3.3.9: Downloaded recipe revision 34072d2fc781d6eca8f3ba8a88c7d0bc
spectra/0.8.1: Forced build from source
Installing package: spectra/0.8.1
Requirements
    eigen/3.3.9 from 'conan-center' - Downloaded
    spectra/0.8.1 from local cache - Cache
Packages
    eigen/3.3.9:5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9 - Download
    spectra/0.8.1:5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9 - Build

Installing (downloading, building) binaries...
eigen/3.3.9: Retrieving package 5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9 from remote 'conan-center' 
Downloading conanmanifest.txt
Downloading conaninfo.txt
Downloading conan_package.tgz
eigen/3.3.9: Package installed 5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9
eigen/3.3.9: Downloaded package revision 9bdf2b9728fd0bbbe6dd78e64a486dbe
[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
[HOOK - conan-center.py] pre_source(): [IMMUTABLE SOURCES (KB-H010)] OK
spectra/0.8.1: Configuring sources in /home/conan/w/BuildSingleReference/.conan/data/spectra/0.8.1/_/_/source

[HOOK - conan-center.py] post_source(): [LIBCXX MANAGEMENT (KB-H011)] OK
[HOOK - conan-center.py] post_source(): [CPPSTD MANAGEMENT (KB-H022)] OK
spectra/0.8.1: Building your package in /home/conan/w/BuildSingleReference/.conan/data/spectra/0.8.1/_/_/build/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9
spectra/0.8.1: Generator txt created conanbuildinfo.txt
[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
spectra/0.8.1: Calling build()
spectra/0.8.1: Package '5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9' built
spectra/0.8.1: Build folder /home/conan/w/BuildSingleReference/.conan/data/spectra/0.8.1/_/_/build/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9
spectra/0.8.1: Generated conaninfo.txt
spectra/0.8.1: Generated conanbuildinfo.txt
spectra/0.8.1: Generating the package
spectra/0.8.1: Package folder /home/conan/w/BuildSingleReference/.conan/data/spectra/0.8.1/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9
spectra/0.8.1: 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
spectra/0.8.1 package(): Packaged 37 '.h' files
spectra/0.8.1 package(): Packaged 1 file: LICENSE
spectra/0.8.1: Package '5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9' created
spectra/0.8.1: Created package revision 2540cbdd3c584b28f4ecd85a94f7dfea
[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
eigen/3.3.9: WARN: Lib folder doesn't exist, can't collect libraries: /home/conan/w/BuildSingleReference/.conan/data/eigen/3.3.9/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/lib
eigen/3.3.9: WARN: Lib folder doesn't exist, can't collect libraries: /home/conan/w/BuildSingleReference/.conan/data/eigen/3.3.9/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/lib
spectra/0.8.1: WARN: This conanfile has no build step
spectra/0.8.1: WARN: Lib folder doesn't exist, can't collect libraries: /home/conan/w/BuildSingleReference/.conan/data/spectra/0.8.1/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/lib