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conan install boost/1.69.0@ --build=boost --profile=/home/conan/w/BuildSingleReference/25848/e8f96d87-74ef-4f26-accb-743c3cd170c3/profile.txt
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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]
boost:shared=True
[build_requires]
[env]

boost/1.69.0: Forced build from source
Installing package: boost/1.69.0
Requirements
    boost/1.69.0 from local cache - Cache
    bzip2/1.0.8 from 'conan-center' - Cache
    libbacktrace/cci.20210118 from 'conan-center' - Cache
    zlib/1.2.11 from 'conan-center' - Cache
Packages
    boost/1.69.0:c7b3c5d91cf70702071b58befd0654c8f0954eac - Build
    bzip2/1.0.8:265fe50d0eb37ba5622b44b8e555406ac0cd6c8b - Cache
    libbacktrace/cci.20210118:b869e6c05cb587ad588e5ec485deb62012ec7b93 - Cache
    zlib/1.2.11:b869e6c05cb587ad588e5ec485deb62012ec7b93 - Cache
Build requirements
    b2/4.5.0 from 'conan-center' - Cache
Build requirements packages
    b2/4.5.0:4db1be536558d833e52e862fd84d64d75c2b3656 - Cache

Installing (downloading, building) binaries...
b2/4.5.0: Already installed!
[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
bzip2/1.0.8: Already installed!
bzip2/1.0.8: Appending PATH environment variable: /home/conan/w/BuildSingleReference/.conan/data/bzip2/1.0.8/_/_/package/265fe50d0eb37ba5622b44b8e555406ac0cd6c8b/bin
[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
libbacktrace/cci.20210118: Already installed!
[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
zlib/1.2.11: Already installed!
[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
boost/1.69.0: Applying build-requirement: b2/4.5.0
boost/1.69.0: Building your package in /home/conan/w/BuildSingleReference/.conan/data/boost/1.69.0/_/_/build/c7b3c5d91cf70702071b58befd0654c8f0954eac
boost/1.69.0: 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
boost/1.69.0: Calling build()
boost/1.69.0: 
b2/4.5.0: WARN: Lib folder doesn't exist, can't collect libraries: /home/conan/w/BuildSingleReference/.conan/data/b2/4.5.0/_/_/package/4db1be536558d833e52e862fd84d64d75c2b3656/lib
boost/1.69.0: WARN: Build folder is dirty, removing it: /home/conan/w/BuildSingleReference/.conan/data/boost/1.69.0/_/_/build/c7b3c5d91cf70702071b58befd0654c8f0954eac
WARN: replace_in_file didn't find pattern '/* thread_local */' in '/home/conan/w/BuildSingleReference/.conan/data/boost/1.69.0/_/_/source/source_subfolder/boost/stacktrace/detail/libbacktrace_impls.hpp' file.
WARN: replace_in_file didn't find pattern '/* static __thread */' in '/home/conan/w/BuildSingleReference/.conan/data/boost/1.69.0/_/_/source/source_subfolder/boost/stacktrace/detail/libbacktrace_impls.hpp' file.
boost/1.69.0: WARN: Patching user-config.jam
boost/1.69.0: WARN: 
using zlib : 1.2.11 : <include>"/home/conan/w/BuildSingleReference/.conan/data/zlib/1.2.11/_/_/package/b869e6c05cb587ad588e5ec485deb62012ec7b93/include" <search>"/home/conan/w/BuildSingleReference/.conan/data/zlib/1.2.11/_/_/package/b869e6c05cb587ad588e5ec485deb62012ec7b93/lib" <name>z ;
using bzip2 : 1.0.8 : <include>"/home/conan/w/BuildSingleReference/.conan/data/bzip2/1.0.8/_/_/package/265fe50d0eb37ba5622b44b8e555406ac0cd6c8b/include" <search>"/home/conan/w/BuildSingleReference/.conan/data/bzip2/1.0.8/_/_/package/265fe50d0eb37ba5622b44b8e555406ac0cd6c8b/lib" <name>bz2 ;
using "gcc" :  :  /usr/bin/g++ : 
<compileflags>"-I/home/conan/w/BuildSingleReference/.conan/data/libbacktrace/cci.20210118/_/_/package/b869e6c05cb587ad588e5ec485deb62012ec7b93/include" <linkflags>"-L/home/conan/w/BuildSingleReference/.conan/data/libbacktrace/cci.20210118/_/_/package/b869e6c05cb587ad588e5ec485deb62012ec7b93/lib"  ;
boost/1.69.0: ERROR: Package 'c7b3c5d91cf70702071b58befd0654c8f0954eac' build failed
boost/1.69.0: WARN: Build folder /home/conan/w/BuildSingleReference/.conan/data/boost/1.69.0/_/_/build/c7b3c5d91cf70702071b58befd0654c8f0954eac
ERROR: boost/1.69.0: Error in build() method, line 790
	b2_flags = " ".join(self._build_flags)
while calling '_build_flags', line 961
	if self.settings.compiler.sanitizer:
	ConanException: 'settings.compiler.sanitizer' doesn't exist for 'gcc'
'settings.compiler' possible configurations are ['cppstd', 'exception', 'libcxx', 'threads', 'version']