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conan install libigl/2.3.0@ --build=libigl --profile=/Users/jenkins/w/BuildSingleReference@3/17142/cac788ef-1d04-4561-8bf8-c672f6ecef09/profile.txt
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Configuration:
[settings]
arch=x86_64
arch_build=x86_64
build_type=Debug
compiler=apple-clang
compiler.libcxx=libc++
compiler.version=11.0
os=Macos
os_build=Macos
[options]
[build_requires]
[env]

libigl/2.3.0: Forced build from source
Installing package: libigl/2.3.0
Requirements
    eigen/3.3.9 from 'conan-center' - Cache
    libigl/2.3.0 from local cache - Cache
Packages
    eigen/3.3.9:5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9 - Cache
    libigl/2.3.0:dbc3893b57cecdfe74432b0142dfd2c40955252e - Build

Installing (downloading, building) binaries...
eigen/3.3.9: 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
libigl/2.3.0: Copying sources to build folder
libigl/2.3.0: Building your package in /Users/jenkins/w/BuildSingleReference@3/.conan/data/libigl/2.3.0/_/_/build/dbc3893b57cecdfe74432b0142dfd2c40955252e
libigl/2.3.0: Generator cmake_find_package created FindEigen3.cmake
libigl/2.3.0: Generator cmake created conanbuildinfo.cmake
[HOOK - conan-center.py] pre_build(): [FPIC MANAGEMENT (KB-H007)] OK. 'fPIC' option found and apparently well managed
[HOOK - conan-center.py] pre_build(): [FPIC MANAGEMENT (KB-H007)] OK
libigl/2.3.0: Calling build()
libigl/2.3.0: 
eigen/3.3.9: WARN: Lib folder doesn't exist, can't collect libraries: /Users/jenkins/w/BuildSingleReference@3/.conan/data/eigen/3.3.9/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/lib
eigen/3.3.9: WARN: Lib folder doesn't exist, can't collect libraries: /Users/jenkins/w/BuildSingleReference@3/.conan/data/eigen/3.3.9/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/lib
libigl/2.3.0: WARN: Build folder is dirty, removing it: /Users/jenkins/w/BuildSingleReference@3/.conan/data/libigl/2.3.0/_/_/build/dbc3893b57cecdfe74432b0142dfd2c40955252e
libigl/2.3.0: ERROR: Package 'dbc3893b57cecdfe74432b0142dfd2c40955252e' build failed
libigl/2.3.0: WARN: Build folder /Users/jenkins/w/BuildSingleReference@3/.conan/data/libigl/2.3.0/_/_/build/dbc3893b57cecdfe74432b0142dfd2c40955252e
ERROR: libigl/2.3.0: Error in build() method, line 104
	self._patch_sources()
while calling '_patch_sources', line 68
	tools.patch(**patch)
	FileNotFoundError: [Errno 2] No such file or directory: 'patches/0001-correct-fpic.patch'